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Legend - object IDs plus links to more info

Data compiled at 2226 UTC on 17 Oct. 2018 for 50 known objects during a period of seven days from 14 to 20 Oct. 2018. White type highlights objects with just announced discovery, and orange is for objects with a new JPL orbit solution (usually from new observation).

Chart
ID

Full ID
Period
Closest
Passage
Uncertainty

Status
GC2212016 GC2218.7 LD+/- 6.0667 hoursinbound
LQ22018 LQ224.67 LD  departed
NL2018 NL174.29 LD  departed
RQ12018 RQ113.59 LD  departed
RT52018 RT570.37 LD  departed
SC32018 SC318.28 LD  departed
SD32018 SD320.38 LD  departed
SG32018 SG310.26 LD  departed
SL32018 SL39.03 LDoutbound
SL162017 SL1635.92 LD  departed
SM12018 SM121.16 LD  departed
SN32018 SN357.37 LD  departed
SS12018 SS154.16 LD  departed
TB2018 TB23.06 LD  departed
TB22018 TB243.22 LD  departed
TB32018 TB337.20 LD  departed
TB52018 TB53.50 LD  departed
TB1452015 TB145175.7 LD  distant
TC2018 TC17.01 LD  departed intruder
TD32018 TD331.49 LD  departed
TE22018 TE216.89 LD  departed
TF22018 TF217.06 LD  departed
TF32018 TF374.8 LD+/- 17 minutesapproaching
TG22018 TG29.53 LD  departed
TG62018 TG612.9 LD+/- 19.3500 hoursapproaching
TH32018 TH313.30 LD  departed
TJ42018 TJ446.88 LD+/- 2 minutes  departed
TM32018 TM36.01 LDoutbound
TN32018 TN38.85 LD  departed
TO32018 TO324.37 LD  departed
TP52018 TP530.70 LD+/- 6 minutes  departed
TR2018 TR26.11 LD  departed
TR32018 TR314.09 LD  departed
TR42018 TR48.49 LD  departed
TS12018 TS16.58 LDoutbound
TS42018 TS45.34 LDoutbound
TS7475534 2006 TS735.60 LDapproaching
TT42018 TT421.28 LD  departed
TU2018 TU21.42 LD  departed
TV2018 TV11.62 LD  departed intruder
TV52018 TV526.41 LD  departed intruder
TV182007 TV1854.0 LD  distant
TW12018 TW114.39 LD  departed
TY12018 TY116.27 LD  departed
TY42018 TY415.15 LD  departed
TZ2018 TZ24.58 LD  departed
TZ22018 TZ29.05 LDoutbound
TZ52018 TZ512.59 LD  departed
UG12013 UG110.4 LD  distant
US72014 US73.1 LD+/- 3.1000 hourspassing
DateTfc.Time
14 Oct. '18Rept. Line
15 Oct. '18Rept. Line
16 Oct. '18Rept. Line
17 Oct. '18Rept. Line
18 Oct. '18Rept. Line
19 Oct. '18 Line
20 Oct. '18 Line

Object Details - Skychart objects presented in reverse designation order, newest first
  ("designation assigned to" indicates unofficial discovery credit)

2018 TG6   -   approaching
Approximate diameter13 meters (H=27.13)
Closest Earth approach3.94 LD at 1130 UTC on 2 Dec. 2018 - Note: JPL reports an approach uncertainty of +/- 19.3500 hours
Inside ten LD of Earth30 Oct. until 4 Jan. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 17 Oct. 2018 UTC
based on 14 observations spanning 2 days
Optical observation  
  • reported from 5 observing codes during 1.8850 days: 291, 568, 734, F52, H21
  • designation assigned to Pan-STARRS 2 observation at 1051 UTC 15 Oct. 2018
  • last observed at 0805 UTC on 17 Oct. 2018 by the Spacewatch 1.8m telescope
Notesrisk
Links  
2018 TZ5   -     departed
Approximate diameter50 meters (H=24.169)
Closest Earth approach8.51 LD at 1344 UTC on 10 Oct. 2018
Inside ten LD of Earth8 to 12 Oct. 2018
Data based onJPL SSD orbit solution #2 downloaded from JPL on 17 Oct. 2018 UTC
based on 30 observations spanning 2 days
Optical observation  
  • reported from 6 observing codes during 1.8300 days: 104, 246, 474, H21, T05, X31
  • designation assigned to ATLAS Haleakala observation at 1207 UTC 14 Oct. 2018
  • last observed at 0802 UTC on 16 Oct. 2018 by ARO Westfield
Links  
2018 TV5   -     departed intruder
Approximate diameter4 meters (H=29.479)
Closest Earth approach0.27 LD at 0523 UTC on 6 Oct. 2018
Inside Earth-Moon system2234 on 5 Oct. until 1211 UTC on 6 Oct. 2018
Inside Earth SOI5 to 6 Oct. 2018
Inside ten LD of Earth3 to 9 Oct. 2018
Closest Moon approach0.29 LD at 1057 UTC on 6 Oct. 2018
Inside one LD of Moon0359-1757 UTC on 6 Oct. 2018
Data based onJPL SSD orbit solution #1 downloaded from JPL on 15 Oct. 2018 UTC
based on 53 observations spanning one day
Optical observation  
  • reported from 11 observing codes during 1.4472 days: 113, 246, 703, A17, F52, G96, H01, I52, J95, K88, Z80
  • first observed at 1224 UTC on 4 Oct. 2018 by Pan-STARRS 2
  • designation assigned to Catalina Sky Survey observation at 0555 UTC 5 Oct. 2018
  • last observed at 2308 UTC on 5 Oct. 2018 by Northolt Branch Obs.
Links  
2018 TP5   -     departed
Approximate diameter28 meters (H=25.44)
Closest Earth approach6.05 LD at 0511 UTC on 1 Oct. 2018 - Note: JPL reports an approach uncertainty of +/- 6 minutes
Inside ten LD of Earth27 Sept. until 4 Oct. 2018
Data based onJPL SSD orbit solution #1 downloaded from JPL on 13 Oct. 2018 UTC
based on 23 observations spanning 3 days
Optical observation  
  • reported from 7 observing codes during 2.7882 days: 104, 204, G96, H01, I52, K88, L01
  • designation assigned to Mt. Lemmon Survey observation at 0734 UTC 10 Oct. 2018
  • last observed at 0229 UTC on 13 Oct. 2018 by Schiaparelli Obs.
Notesrisk
Links  
2018 TB5   -     departed
Approximate diameter16 meters (H=26.585)
Closest Earth approach3.13 LD at 1342 UTC on 13 Oct. 2018
Inside ten LD of Earth10 to 16 Oct. 2018
Data based onJPL SSD orbit solution #2 downloaded from JPL on 13 Oct. 2018 UTC
based on 34 observations spanning 2 days
Optical observation  
  • reported from 9 observing codes during 2.4945 days: 204, 246, 595, A17, F52, H21, J95, K88, L01
  • designation assigned to Pan-STARRS 2 observation at 1054 UTC 10 Oct. 2018
  • last observed at 2246 UTC on 12 Oct. 2018 by Schiaparelli Obs.
Links  
2018 TY4   -     departed
Approximate diameter8 meters (H=28.045)
Closest Earth approach1.50 LD at 2236 UTC on 7 Oct. 2018
Inside Earth SOI7 to 8 Oct. 2018
Inside ten LD of Earth3 to 11 Oct. 2018
Closest Moon approach2.23 LD at 1843 UTC on 7 Oct. 2018
Data based onJPL SSD orbit solution #1 downloaded from JPL on 13 Oct. 2018 UTC
based on 21 observations spanning 2 days
Optical observation  
  • reported from 6 observing codes during 2.0151 days: G96, H01, H21, I52, K88, L01
  • designation assigned to Mt. Lemmon Survey observation at 0707 UTC 10 Oct. 2018
  • last observed at 0728 UTC on 12 Oct. 2018 by ARO Westfield
Notesrisk
Links  
2018 TT4   -     departed
Approximate diameter37 meters (H=24.78)
Closest Earth approach5.23 LD at 1652 UTC on 7 Oct. 2018
Inside ten LD of Earth5 to 10 Oct. 2018
Data based onJPL SSD orbit solution #3 downloaded from JPL on 16 Oct. 2018 UTC
based on 23 observations spanning 5 days
Optical observation  
  • reported from 4 observing codes during 5.2350 days: 474, 807, T05, T08
  • first observed at 0908 UTC on 10 Oct. 2018 by ATLAS Haleakala
  • designation assigned to ATLAS Mauna Loa observation at 0831 UTC 11 Oct. 2018
  • last observed at 1446 UTC on 15 Oct. 2018 by Mt. John Obs.
Links  
2018 TS4   -   outbound
Approximate diameter11 meters (H=27.4)
Closest Earth approach5.17 LD at 0949 UTC on 11 Oct. 2018
Inside ten LD of Earth25 Sept. until 28 Oct. 2018
Data based onJPL SSD orbit solution #2 downloaded from JPL on 13 Oct. 2018 UTC
based on 26 observations spanning 9 days
Optical observation  
  • reported from 9 observing codes during 8.7691 days: 104, 204, F52, G96, H01, H21, I52, K88, L01
  • first observed at 0954 UTC on 4 Oct. 2018 by Pan-STARRS 2
  • designation assigned to Mt. Lemmon Survey observation at 0831 UTC 10 Oct. 2018
  • last observed at 0422 UTC on 13 Oct. 2018 by Schiaparelli Obs.
NotesNHATS target
Links  
2018 TR4   -     departed
Approximate diameter35 meters (H=24.959)
Closest Earth approach6.84 LD at 2325 UTC on 11 Oct. 2018
Inside ten LD of Earth9 to 14 Oct. 2018
Data based onJPL SSD orbit solution #3 downloaded from JPL on 15 Oct. 2018 UTC
based on 151 observations spanning 3 days
Optical observation  
  • reported from 30 observing codes during 2.9324 days: 160, 204, 246, 247, 585, 595, 703, 718, 850, 958, A17, C43, C77, F52, G34, H06, H21, I52, J95, K30, K38, K51, K80, K88, L01, L04, L28, P93, W34, Z80
  • designation assigned to Catalina Sky Survey observation at 0710 UTC 10 Oct. 2018
  • last observed at 0532 UTC on 13 Oct. 2018 by roving observer
Links  
2018 TJ4   -     departed
Approximate diameter24 meters (H=25.747)
Closest Earth approach7.97 LD at 1600 UTC on 2 Oct. 2018 - Note: JPL reports an approach uncertainty of +/- 2 minutes
Inside ten LD of Earth1 to 4 Oct. 2018
Data based onJPL SSD orbit solution #1 downloaded from JPL on 11 Oct. 2018 UTC
based on 17 observations spanning 3 days
Optical observation  
  • reported from 4 observing codes during 3.6786 days: G96, I52, K88, L01
  • designation assigned to Mt. Lemmon Survey observation at 0530 UTC 7 Oct. 2018
  • last observed at 2147 UTC on 10 Oct. 2018 by Visnjan Obs.
Links  
2018 TR3   -     departed
Approximate diameter10 meters (H=27.733)
Closest Earth approach5.78 LD at 0809 UTC on 29 Sept. 2018
Inside ten LD of Earth19 Sept. until 8 Oct. 2018
Data based onJPL SSD orbit solution #2 downloaded from JPL on 16 Oct. 2018 UTC
based on 29 observations spanning 9 days
Optical observation  
  • reported from 6 observing codes during 8.8696 days: 474, 807, G96, H21, K88, L01
  • designation assigned to Mt. Lemmon Survey observation at 1122 UTC 6 Oct. 2018
  • last observed at 0814 UTC on 15 Oct. 2018 by Robert Holmes via Cerro Tololo Inter-American Obs.
NotesNHATS target
Links  
2018 TO3   -     departed
Approximate diameter14 meters (H=26.899)
Closest Earth approach9.88 LD at 1245 UTC on 5 Oct. 2018
Inside ten LD of Earth4 to 6 Oct. 2018
Data based onJPL SSD orbit solution #3 downloaded from JPL on 15 Oct. 2018 UTC
based on 29 observations spanning 6 days
Optical observation  
  • reported from 6 observing codes during 5.8878 days: 474, G96, H21, I52, J95, L01
  • designation assigned to Mt. Lemmon Survey observation at 0711 UTC 6 Oct. 2018
  • last observed at 0429 UTC on 12 Oct. 2018 by ARO Westfield
Links  
2018 TN3   -     departed
Approximate diameter8 meters (H=28.137)
Closest Earth approach6.67 LD at 1021 UTC on 10 Oct. 2018
Inside ten LD of Earth5 to 15 Oct. 2018
Data based onJPL SSD orbit solution #2 downloaded from JPL on 10 Oct. 2018 UTC
based on 28 observations spanning 4 days
Optical observation  
  • reported from 6 observing codes during 3.7851 days: 474, G96, H21, I52, J95, L01
  • designation assigned to Mt. Lemmon Survey observation at 0709 UTC 6 Oct. 2018
  • last observed at 0200 UTC on 10 Oct. 2018 by Great Shefford Obs.
Links  
2018 TM3   -   outbound
Approximate diameter4 meters (H=29.62)
Closest Earth approach3.55 LD at 2241 UTC on 8 Oct. 2018
Inside ten LD of Earth29 Sept. until 18 Oct. 2018
Data based onJPL SSD orbit solution #2 downloaded from JPL on 10 Oct. 2018 UTC
based on 27 observations spanning 4 days
Optical observation  
  • reported from 7 observing codes during 3.8229 days: 204, 474, G96, H01, I52, J95, L01
  • designation assigned to Mt. Lemmon Survey observation at 0705 UTC 6 Oct. 2018
  • last observed at 0250 UTC on 10 Oct. 2018 by Great Shefford Obs.
NotesNHATS target
Links  
2018 TH3   -     departed
Approximate diameter5 meters (H=29.043)
Closest Earth approach2.80 LD at 1115 UTC on 3 Oct. 2018
Inside ten LD of Earth25 Sept. until 11 Oct. 2018
Data based onJPL SSD orbit solution #1 downloaded from JPL on 9 Oct. 2018 UTC
based on 18 observations spanning 2 days
Optical observation  
  • reported from 5 observing codes during 2.3229 days: 474, G96, H01, I52, J95
  • designation assigned to Mt. Lemmon Survey observation at 0548 UTC 6 Oct. 2018
  • last observed at 1333 UTC on 8 Oct. 2018 by Mt. John Obs.
NotesNHATS target
Links  
2018 TF3   -   approaching
Approximate diameter295 meters (H=20.299)
Closest Earth approach7.77 LD at 1802 UTC on 5 Nov. 2018 - Note: JPL reports an approach uncertainty of +/- 17 minutes
Inside ten LD of Earth4 to 7 Nov. 2018
Data based onJPL SSD orbit solution #8 downloaded from JPL on 16 Oct. 2018 UTC
based on 77 observations spanning 9 days
Optical observation  
  • reported from 11 observing codes during 9.5984 days: 204, 246, 474, 703, B67, D29, I52, K63, K88, T12, Y28
  • designation assigned to Catalina Sky Survey observation at 0824 UTC 6 Oct. 2018
  • last observed at 2246 UTC on 15 Oct. 2018 by KLENOT
Links  
2018 TD3   -     departed
Approximate diameter13 meters (H=27.16)
Closest Earth approach1.88 LD at 0741 UTC on 4 Oct. 2018
Inside Earth SOI3 to 4 Oct. 2018
Inside ten LD of Earth1 to 7 Oct. 2018
Closest Moon approach2.34 LD at 0452 UTC on 4 Oct. 2018
Data based onJPL SSD orbit solution #2 downloaded from JPL on 15 Oct. 2018 UTC
based on 35 observations spanning 6 days
Optical observation  
  • reported from 9 observing codes during 5.9648 days: 204, 474, 703, G96, H01, H21, J95, K63, K88
  • designation assigned to Catalina Sky Survey observation at 0555 UTC 6 Oct. 2018
  • last observed at 0505 UTC on 12 Oct. 2018 by ARO Westfield
Links  
2018 TB3   -     departed
Approximate diameter16 meters (H=26.667)
Closest Earth approach3.97 LD at 1856 UTC on 30 Sept. 2018
Inside ten LD of Earth27 Sept. until 4 Oct. 2018
Data based onJPL SSD orbit solution #2 downloaded from JPL on 15 Oct. 2018 UTC
based on 23 observations spanning 6 days
Optical observation  
  • reported from 5 observing codes during 6.1396 days: 474, G96, H01, I52, T12
  • designation assigned to Mt. Lemmon Survey observation at 0403 UTC 6 Oct. 2018
  • last observed at 0724 UTC on 12 Oct. 2018 by UH/Tholen NEO Follow-Up 2.24m Telescope
Links  
2018 TZ2   -   outbound
Approximate diameter39 meters (H=24.675)
Closest Earth approach9.05 LD at 2136 UTC on 16 Oct. 2018
Inside ten LD of Earth15 to 18 Oct. 2018
Data based onJPL SSD orbit solution #4 downloaded from JPL on 14 Oct. 2018 UTC
based on 45 observations spanning 8 days
Optical observation  
  • reported from 7 observing codes during 8.4938 days: 204, 246, G96, I52, K63, K88, L01
  • designation assigned to Mt. Lemmon Survey observation at 0949 UTC 5 Oct. 2018
  • last observed at 2140 UTC on 13 Oct. 2018 by KLENOT
Links  
2018 TG2   -     departed
Approximate diameter5 meters (H=29.342)
Closest Earth approach1.27 LD at 1033 UTC on 8 Oct. 2018
Inside Earth SOI7 to 9 Oct. 2018
Inside ten LD of Earth2 to 14 Oct. 2018
Closest Moon approach1.40 LD at 2339 UTC on 8 Oct. 2018
Data based onJPL SSD orbit solution #1 downloaded from JPL on 8 Oct. 2018 UTC
based on 27 observations spanning one day
Optical observation  
  • reported from 6 observing codes during 1.7514 days: 204, G96, H01, I52, J95, L01
  • designation assigned to Mt. Lemmon Survey observation at 0435 UTC 6 Oct. 2018
  • last observed at 2237 UTC on 7 Oct. 2018 by Great Shefford Obs.
NotesNHATS target
Links  
2018 TF2   -     departed
Approximate diameter17 meters (H=26.493)
Closest Earth approach7.46 LD at 2033 UTC on 7 Oct. 2018
Inside ten LD of Earth5 to 10 Oct. 2018
Data based onJPL SSD orbit solution #2 downloaded from JPL on 10 Oct. 2018 UTC
based on 31 observations spanning 3 days
Optical observation  
  • reported from 7 observing codes during 3.5471 days: 204, 474, 703, 850, G96, H01, J95
  • designation assigned to Catalina Sky Survey observation at 0652 UTC 6 Oct. 2018
  • last observed at 2000 UTC on 9 Oct. 2018 by Great Shefford Obs.
Links  
2018 TE2   -     departed
Approximate diameter7 meters (H=28.353)
Closest Earth approach1.27 LD at 1036 UTC on 8 Oct. 2018
Inside Earth SOI7 to 9 Oct. 2018
Inside ten LD of Earth5 to 11 Oct. 2018
Closest Moon approach1.18 LD at 1747 UTC on 8 Oct. 2018
Data based onJPL SSD orbit solution #2 downloaded from JPL on 9 Oct. 2018 UTC
based on 28 observations spanning one day
Optical observation  
  • reported from 5 observing codes during 1.8552 days: 711, G96, H01, I52, J95
  • designation assigned to Mt. Lemmon Survey observation at 0322 UTC 6 Oct. 2018
  • last observed at 2354 UTC on 7 Oct. 2018 by Great Shefford Obs.
Links  
2018 TB2   -     departed
Approximate diameter14 meters (H=26.979)
Closest Earth approach5.04 LD at 2338 UTC on 30 Sept. 2018
Inside ten LD of Earth28 Sept. until 3 Oct. 2018
Data based onJPL SSD orbit solution #5 downloaded from JPL on 12 Oct. 2018 UTC
based on 28 observations spanning 8 days
Optical observation  
  • reported from 6 observing codes during 7.9727 days: 291, F52, G96, I52, K88, T12
  • first observed at 0932 UTC on 3 Oct. 2018 by Pan-STARRS 2
  • designation assigned to Mt. Lemmon Survey observation at 0817 UTC 5 Oct. 2018
  • last observed at 0852 UTC on 11 Oct. 2018 by UH/Tholen NEO Follow-Up 2.24m Telescope
Links  
2018 TY1   -     departed
Approximate diameter20 meters (H=26.174)
Closest Earth approach8.12 LD at 0101 UTC on 8 Oct. 2018
Inside ten LD of Earth5 to 10 Oct. 2018
Data based onJPL SSD orbit solution #2 downloaded from JPL on 10 Oct. 2018 UTC
based on 52 observations spanning 5 days
Optical observation  
  • reported from 11 observing codes during 5.1718 days: 113, 204, 246, 703, 711, G96, H01, I52, J95, K88, L04
  • designation assigned to Catalina Sky Survey observation at 0622 UTC 5 Oct. 2018
  • last observed at 1030 UTC on 10 Oct. 2018 by Steward Obs. Mt. Lemmon Station
Links  
2018 TW1   -     departed
Approximate diameter10 meters (H=27.735)
Closest Earth approach4.30 LD at 0851 UTC on 6 Oct. 2018
Inside ten LD of Earth1 to 11 Oct. 2018
Data based onJPL SSD orbit solution #1 downloaded from JPL on 7 Oct. 2018 UTC
based on 43 observations spanning 2 days
Optical observation  
  • reported from 9 observing codes during 1.8865 days: 113, 204, 246, 703, A17, H01, I52, J95, K88
  • designation assigned to Catalina Sky Survey observation at 0550 UTC 5 Oct. 2018
  • last observed at 0307 UTC on 7 Oct. 2018 by Schiaparelli Obs.
Links  
2018 TS1   -   outbound
Approximate diameter25 meters (H=25.623)
Closest Earth approach6.58 LD at 1444 UTC on 15 Oct. 2018
Inside ten LD of Earth12 to 18 Oct. 2018
Data based onJPL SSD orbit solution #5 downloaded from JPL on 15 Oct. 2018 UTC
based on 67 observations spanning 9 days
Optical observation  
  • reported from 14 observing codes during 9.4243 days: 204, 246, 595, 691, 711, A17, F52, G96, I41, I52, K63, K88, L01, T05
  • designation assigned to Pan-STARRS 2 observation at 1134 UTC 4 Oct. 2018
  • last observed at 2145 UTC on 13 Oct. 2018 by Farra d'Isonzo Obs.
Links  
2018 TZ   -     departed
Approximate diameter15 meters (H=26.756)
Closest Earth approach1.66 LD at 1431 UTC on 5 Oct. 2018
Inside Earth SOI5 to 6 Oct. 2018
Inside ten LD of Earth2 to 8 Oct. 2018
Closest Moon approach2.20 LD at 1132 UTC on 5 Oct. 2018
Data based onJPL SSD orbit solution #1 downloaded from JPL on 7 Oct. 2018 UTC
based on 29 observations spanning one day
Optical observation  
  • reported from 7 observing codes during 18.706 hours: 474, 703, G96, H01, I19, I41, X31
  • designation assigned to Catalina Sky Survey observation at 0728 UTC 6 Oct. 2018
  • last observed at 0211 UTC on 7 Oct. 2018 by Galilei Obs.
Links  
2018 TV   -     departed intruder
Approximate diameter7 meters (H=28.576)
Closest Earth approach0.74 LD at 2004 UTC on 7 Oct. 2018
Inside Earth-Moon system1133 on 7 Oct. until 0435 UTC on 8 Oct. 2018
Inside Earth SOI6 to 9 Oct. 2018
Inside ten LD of Earth2 to 13 Oct. 2018
Closest Moon approach1.05 LD at 0513 UTC on 8 Oct. 2018
Data based onJPL SSD orbit solution #3 downloaded from JPL on 8 Oct. 2018 UTC
based on 55 observations spanning 2 days
Optical observation  
  • reported from 11 observing codes during 2.7625 days: 204, 246, C77, G96, H21, I52, J95, K30, K88, L04, Z80
  • designation assigned to Mt. Lemmon Survey observation at 0354 UTC 5 Oct. 2018
  • last observed at 2212 UTC on 7 Oct. 2018 by Great Shefford Obs.
Notesrisk, NHATS target
Links  
2018 TU   -     departed
Approximate diameter11 meters (H=27.537)
Closest Earth approach2.03 LD at 2203 UTC on 5 Oct. 2018
Inside Earth SOI5 to 6 Oct. 2018
Inside ten LD of Earth2 to 9 Oct. 2018
Closest Moon approach2.44 LD at 0602 UTC on 6 Oct. 2018
Data based onJPL SSD orbit solution #2 downloaded from JPL on 6 Oct. 2018 UTC
based on 38 observations spanning 2 days
Optical observation  
  • reported from 11 observing codes during 2.0935 days: 204, 474, 587, 595, F52, H21, J95, K63, K88, L01, T05
  • first observed at 0926 UTC on 3 Oct. 2018 by Pan-STARRS 2
  • designation assigned to ATLAS Haleakala observation at 1054 UTC 3 Oct. 2018
  • last observed at 1141 UTC on 5 Oct. 2018 by Mt. John Obs.
Links  
2018 TR   -     departed
Approximate diameter28 meters (H=25.403)
Closest Earth approach8.04 LD at 1718 UTC on 28 Sept. 2018
Inside ten LD of Earth25 Sept. until 2 Oct. 2018
Data based onJPL SSD orbit solution #10 downloaded from JPL on 15 Oct. 2018 UTC
based on 59 observations spanning 13 days
Optical observation  
  • reported from 10 observing codes during 13.0151 days: 204, 291, 474, 587, 711, 807, I52, T05, T08, T12
  • designation assigned to ATLAS Haleakala observation at 0726 UTC 2 Oct. 2018
  • last observed at 0747 UTC on 15 Oct. 2018 by the Spacewatch 1.8m telescope
Notesrisk, NHATS target
Links  
2018 TC   -     departed intruder
Approximate diameter15 meters (H=26.7)
Closest Earth approach0.79 LD at 1959 UTC on 30 Sept. 2018
Inside Earth-Moon system0843 on 30 Sept. until 0716 UTC on 1 Oct. 2018
Inside Earth SOI29 Sept. until 2 Oct. 2018
Inside ten LD of Earth23 Sept. until 8 Oct. 2018
Closest Moon approach1.21 LD at 0512 UTC on 1 Oct. 2018
Data based onJPL SSD orbit solution #8 downloaded from JPL on 12 Oct. 2018 UTC
based on 107 observations spanning 8 days
Optical observation  
  • reported from 22 observing codes during 8.0369 days: 204, 474, 595, 703, 850, C77, F52, G40, G96, H21, I52, J69, J95, K38, K63, K88, L01, L04, T05, T08, X31, Z80
  • designation assigned to ATLAS Mauna Loa observation at 1224 UTC 2 Oct. 2018
  • last observed at 1317 UTC on 10 Oct. 2018 by Pan-STARRS 2
NotesNHATS target
Links  
2018 TB   -     departed
Approximate diameter35 meters (H=24.9)
Closest Earth approach4.83 LD at 0517 UTC on 2 Oct. 2018
Inside ten LD of Earth27 Sept. until 6 Oct. 2018
Data based onJPL SSD orbit solution #11 downloaded from JPL on 13 Oct. 2018 UTC
based on 158 observations spanning 10 days
Optical observation  
  • reported from 25 observing codes during 10.4895 days: 204, 246, 291, 474, 595, 703, 850, C77, G40, G96, H21, H36, I52, J69, J95, K63, K88, L01, Q62, Q66, T05, T08, T12, X31, Z80
  • designation assigned to ATLAS Haleakala observation at 1007 UTC 2 Oct. 2018
  • last observed at 2152 UTC on 12 Oct. 2018 by KLENOT
Notesrisk
Links  
2018 SN3   -     departed
Approximate diameter11 meters (H=27.537)
Closest Earth approach1.58 LD at 1913 UTC on 16 Sept. 2018
Inside Earth SOI15 to 17 Sept. 2018
Inside ten LD of Earth11 to 21 Sept. 2018
Closest Moon approach2.16 LD at 1034 UTC on 16 Sept. 2018
Data based onJPL SSD orbit solution #4 downloaded from JPL on 17 Oct. 2018 UTC
based on 19 observations spanning 2 days
Optical observation  
  • reported from one observing code during 2.0163 days: I41
  • first observed at 1003 UTC on 17 Sept. 2018 by the Palomar Transient Factory
  • designation assigned to Palomar Transient Factory observation at 0953 UTC 18 Sept. 2018
  • last observed at 1026 UTC on 19 Sept. 2018 by the Palomar Transient Factory
Notesrisk, NHATS target
Links  
2018 SL3   -   outbound
Approximate diameter32 meters (H=25.1)
Closest Earth approach9.03 LD at 1435 UTC on 15 Oct. 2018
Inside ten LD of Earth14 to 17 Oct. 2018
Data based onJPL SSD orbit solution #7 downloaded from JPL on 14 Oct. 2018 UTC
based on 49 observations spanning 13 days
Optical observation  
  • reported from 9 observing codes during 13.4968 days: 246, 595, A17, F52, G96, H21, I52, J69, L01
  • designation assigned to Mt. Lemmon Survey observation at 0811 UTC 30 Sept. 2018
  • last observed at 2006 UTC on 13 Oct. 2018 by Farra d'Isonzo Obs.
Links  
2018 SG3   -     departed
Approximate diameter13 meters (H=27.1)
Closest Earth approach6.70 LD at 0128 UTC on 8 Oct. 2018
Inside ten LD of Earth2 to 13 Oct. 2018
Data based onJPL SSD orbit solution #3 downloaded from JPL on 7 Oct. 2018 UTC
based on 27 observations spanning 6 days
Optical observation  
  • reported from 6 observing codes during 6.2420 days: 474, 807, F52, G96, H21, L01
  • designation assigned to Mt. Lemmon Survey observation at 0635 UTC 30 Sept. 2018
  • last observed at 1224 UTC on 6 Oct. 2018 by Mt. John Obs.
NotesNHATS target
Links  
2018 SD3   -     departed
Approximate diameter9 meters (H=27.841)
Closest Earth approach5.39 LD at 1212 UTC on 2 Oct. 2018
Inside ten LD of Earth27 Sept. until 7 Oct. 2018
Data based onJPL SSD orbit solution #1 downloaded from JPL on 3 Oct. 2018 UTC
based on 22 observations spanning 2 days
Optical observation  
  • reported from 6 observing codes during 2.2641 days: 474, G96, H21, I52, J95, L01
  • designation assigned to Mt. Lemmon Survey observation at 0418 UTC 30 Sept. 2018
  • last observed at 1039 UTC on 2 Oct. 2018 by Mt. John Obs.
NotesNHATS target
Links  
2018 SC3   -     departed
Approximate diameter20 meters (H=26.1)
Closest Earth approach6.18 LD at 0956 UTC on 4 Oct. 2018
Inside ten LD of Earth30 Sept. until 8 Oct. 2018
Data based onJPL SSD orbit solution #5 downloaded from JPL on 8 Oct. 2018 UTC
based on 80 observations spanning 7 days
Optical observation  
  • reported from 17 observing codes during 7.4724 days: 113, 474, 595, 691, C43, C77, F52, G96, H21, I52, J95, K51, K63, K88, L01, T05, W34
  • designation assigned to Mt. Lemmon Survey observation at 0230 UTC 30 Sept. 2018
  • last observed at 1351 UTC on 7 Oct. 2018 by Mt. John Obs.
Links  
2018 SS1   -     departed
Approximate diameter62 meters (H=23.7)
Closest Earth approach6.50 LD at 0309 UTC on 27 Sept. 2018
Inside ten LD of Earth24 to 29 Sept. 2018
Data based onJPL SSD orbit solution #7 downloaded from JPL on 15 Oct. 2018 UTC
based on 106 observations spanning 15 days
Optical observation  
  • reported from 16 observing codes during 15.3464 days: 104, 160, 204, 474, 807, G40, G96, I41, I52, J69, J95, K63, L01, W34, Z43, Z80
  • designation assigned to Mt. Lemmon Survey observation at 0519 UTC 22 Sept. 2018
  • last observed at 1337 UTC on 7 Oct. 2018 by Mt. John Obs.
Links  
2018 SM1   -     departed
Approximate diameter85 meters (H=23.)
Closest Earth approach6.79 LD at 1142 UTC on 27 Sept. 2018
Inside ten LD of Earth21 Sept. until 3 Oct. 2018
Data based onJPL SSD orbit solution #10 downloaded from JPL on 13 Oct. 2018 UTC
based on 323 observations spanning 57 days
Optical observation  
  • reported from 42 observing codes during 57.0597 days: 089, 094, 104, 106, 113, 118, 160, 204, 587, 595, 673, 703, 718, 850, 932, A17, A53, C47, C77, C95, F51, G34, G40, G96, H21, I41, J27, J69, J95, K32, K38, K51, K63, K74, K88, L01, L04, L28, T05, W34, Z43, Z80
  • first observed at 0905 UTC on 14 Aug. 2018 by Pan-STARRS 1
  • designation assigned to ATLAS Haleakala observation at 0840 UTC 18 Sept. 2018
  • last observed at 1031 UTC on 10 Oct. 2018 by the Mt. Lemmon Survey
NotesNHATS target
Links  
2018 RT5   -     departed
Approximate diameter19 meters (H=26.2)
Closest Earth approach1.64 LD at 0356 UTC on 12 Sept. 2018
Inside Earth SOI11 to 13 Sept. 2018
Inside ten LD of Earth7 to 16 Sept. 2018
Closest Moon approach1.53 LD at 1806 UTC on 11 Sept. 2018
Data based onJPL SSD orbit solution #5 downloaded from JPL on 7 Oct. 2018 UTC
based on 81 observations spanning 18 days
Optical observation  
  • reported from 14 observing codes during 17.9890 days: 104, 160, 595, 703, 718, H21, I41, I52, J95, K63, K88, L04, T08, Z80
  • first observed at 0645 UTC on 13 Sept. 2018 by the Palomar Transient Factory
  • designation assigned to ATLAS Mauna Loa observation at 1118 UTC 13 Sept. 2018
  • last observed at 0629 UTC on 1 Oct. 2018 by ARO Westfield
Links  
2018 RQ1   -     departed
Approximate diameter51 meters (H=24.1)
Closest Earth approach4.06 LD at 2255 UTC on 24 Sept. 2018
Inside ten LD of Earth11 Sept. until 8 Oct. 2018
Data based onJPL SSD orbit solution #13 downloaded from JPL on 7 Oct. 2018 UTC
based on 116 observations spanning 28 days
Optical observation  
  • reported from 17 observing codes during 27.9670 days: 474, 691, 703, A17, E10, G96, H06, I52, J04, K61, L01, Q62, T05, T08, T12, U69, W88
  • designation assigned to Catalina Sky Survey observation at 0907 UTC 7 Sept. 2018
  • last observed at 0820 UTC on 5 Oct. 2018 by Mt. John Obs.
NotesNHATS target
Links  
2018 NL   -     departed
Approximate diameter28 meters (H=25.4)
Closest Earth approach1.42 LD at 2018 UTC on 28 June 2018
Inside Earth SOI27 to 29 June 2018
Inside ten LD of Earth23 June until 4 July 2018
Closest Moon approach1.20 LD at 1744 UTC on 28 June 2018
Data based onJPL SSD orbit solution #13 downloaded from JPL on 15 Oct. 2018 UTC
based on 36 observations spanning 104 days
Optical observation  
  • reported from 8 observing codes during 103.8201 days: 309, 695, 734, G96, H21, I52, L01, T12
  • designation assigned to Mt. Lemmon Survey observation at 0940 UTC 3 July 2018
  • last observed at 0521 UTC on 15 Oct. 2018 by Marco Micheli via Cerro Paranal
Notesrisk
Links  
2018 LQ2   -     departed
Approximate diameter35 meters (H=24.9)
Closest Earth approach9.36 LD at 2135 UTC on 27 Aug. 2018
Inside ten LD of Earth17 Aug. until 6 Sept. 2018
Data based onJPL SSD orbit solution #65 downloaded from JPL on 14 Oct. 2018 UTC
based on 462 observations spanning 129 days
Optical observation  
  • reported from 36 observing codes during 129.0966 days: 157, 160, 204, 291, 587, 595, 691, 703, 711, 718, A17, B67, C97, D29, F51, F52, G34, G37, G40, G58, G96, H21, H36, I41, I52, K63, K87, L04, P93, T05, T08, U63, W25, W34, Z43, Z80
  • first observed at 1255 UTC on 5 June 2018 by Pan-STARRS 1
  • designation assigned to Catalina Sky Survey observation at 0825 UTC 7 June 2018
  • last observed at 1514 UTC on 12 Oct. 2018 by Purple Mtn. Obs. Xuyi Station
NotesNHATS target
Links  
2017 SL16   -     departed
Approximate diameter23 meters (H=25.8)
Closest Earth approach8.49 LD at 2108 UTC on 20 Sept. 2018
Inside ten LD of Earth17 to 24 Sept. 2018
Data based onJPL SSD orbit solution #7 downloaded from JPL on 10 Oct. 2018 UTC
based on 46 observations spanning 2017-2018
Optical observation  
  • reported from 2 observing codes during 8.0300 days: 291, 807
  • first observed at 0612 UTC on 2 Oct. 2018 by Robert Holmes via Cerro Tololo Inter-American Obs.
  • last observed at 0655 UTC on 10 Oct. 2018 by the Spacewatch 1.8m telescope
NotesNHATS target
previous observation Sept.-Oct. 2017
Links  
2016 GC221   -   inbound
Approximate diameter37 meters (H=24.8)
Closest Earth approach8.69 LD at 1441 UTC on 18 Oct. 2018 - Note: JPL reports an approach uncertainty of +/- 6.0667 hours
Inside ten LD of Earth17 to 20 Oct. 2018
Data based onJPL SSD orbit solution #6 downloaded from JPL on 30 Sept. 2018 UTC (dated 6 April 2017 local)
based on 71 observations spanning 2 days
Optical observation  
    none recent
Notesprevious observation April 2016
Links  
2015 TB145   -     distant
Approximate diameter339 meters (H=20.)
Closest Earth approach
Distance from Earth252.4 - 266.5 LD min-max during the observation period
Data based onJPL SSD orbit solution #60 downloaded from JPL on 10 Oct. 2018 UTC
based on 1795 observations spanning 2015-2018 including radar
Optical observation  
  • reported from one observing code during 1.9899 days: 204
  • first observed at 0152 UTC on 7 Oct. 2018 by Schiaparelli Obs.
  • last observed at 0138 UTC on 9 Oct. 2018 by Schiaparelli Obs.
Notesprevious passage Oct. 2015 at 1.27 LD
Links  
2014 US7   -   passing
Approximate diameter18 meters (H=26.4)
Closest Earth approach3.14 LD at 1604 UTC on 17 Oct. 2018 - Note: JPL reports an approach uncertainty of +/- 3.1000 hours
Inside ten LD of Earth12 to 22 Oct. 2018
Data based onJPL SSD orbit solution #7 downloaded from JPL on 30 Sept. 2018 UTC (dated 6 April 2017 local)
based on 58 observations spanning 6 days
Optical observation  
    none recent
NotesNHATS target
previous passage Oct. 2014 at 4.23 LD
Links  
2013 UG1   -     distant
Approximate diameter117 meters (H=22.3)
Closest Earth approach
Distance from Earth10.9 LD during the observation period
Data based onJPL SSD orbit solution #20 downloaded from JPL on 17 Oct. 2018 UTC
based on 211 observations spanning 2013-2018
Optical observation  
  • reported from one observing code during 1.582 hours: K80
  • first observed at 0022 UTC on 17 Oct. 2018 by Platanus Obs.
  • last observed at 0157 UTC on 17 Oct. 2018 by Platanus Obs.
Notesprevious passage Oct. 2013 at 4.49 LD and observation Nov.-Dec. 2016
Links  
2007 TV18   -     distant
Approximate diameter59 meters (H=23.8)
Closest Earth approach
Distance from Earth21.3 - 57.4 LD min-max during the observation period
Data based onJPL SSD orbit solution #31 downloaded from JPL on 16 Oct. 2018 UTC
based on 106 observations spanning 2007-2018
Optical observation  
  • reported from 4 observing codes during 17.4680 days: 204, 291, 691, F52
  • first observed at 2004 UTC on 27 Sept. 2018 by Schiaparelli Obs.
  • last observed at 0718 UTC on 15 Oct. 2018 by Pan-STARRS 2
NotesNHATS target
previous observation Oct.-Nov. 2007 and passage April 2014 at 7.39 LD
Links  
475534 2006 TS7   -   approaching
Approximate diameter195 meters (H=21.2)
Closest Earth approach7.51 LD at 1158 UTC on 29 Oct. 2018
Inside ten LD of Earth27 to 31 Oct. 2018
Data based onJPL SSD orbit solution #42 downloaded from JPL on 17 Oct. 2018 UTC
based on 180 observations spanning 2006-2018
Optical observation  
  • reported from 2 observing codes during 12.9644 days: F52, T05
  • first observed at 1448 UTC on 3 Oct. 2018 by Pan-STARRS 2
  • last observed at 1356 UTC on 16 Oct. 2018 by ATLAS Haleakala
Notesprevious observation July 2014, observation Aug.-Sept. 2015, observation Aug.-Oct. 2016, and observation Aug.-Oct. 2017
Links  

Footnotes

Illustration of ten lunar distances.

1. Ten lunar distances:  One "lunar distance" (LD) is the average distance between Earth and Moon (about 384,400 km., the same as 238,855 miles or 9.59 times around Earth's equator). Ten lunar distances has no special astronomical importance but is a useful giant traveling "bubble" within which to organize this special reporting. The approach of a small Solar-System body becomes more interesting when it nears or comes closer than 2.41 LD, as it encounters our planet's gravitational sphere of influence ( SOI). Earth's gravity can change the orbits of objects passing through its SOI. The Moon also has its own SOI, which changes as its distance from Earth varies, but never extends much more than 0.18 LD. (The simple illustration above, with Earth and Moon not to scale, shows the Earth SOI as a dotted vertical blue line.) The "Earth-Moon system" is generally defined as that region of space within a radius of one lunar distance from Earth, so an object can pass quite close to the Moon yet not be described as coming "inside" the E-M system.

2. Data credit:  All data on this page derived from orbit solutions comes from the NASA JPL Solar System Dynamics (SSD) Group through its Horizons system. All information about optical observations comes from the IAU Minor Planet Center (MPC) and info about radar observations comes from JPL SSD. The MPC, NASA, and JPL are not associated with this page or A/CC, and responsibility for the interpretation of this information and its use here rests entirely with A/CC. Important note: Approach times presented here as to-the-minute may have unstated uncertainties of a few minutes, or many minutes or even hours for objects with old or very short observation spans, which is significant because the Earth moves through its own diameter in about seven minutes. Thus actual encounter distances may vary, occasionally by as much as ten lunar distances. See JPL's Close Approach Tables for nominal vs. minimum possible passage distances and times, and for their note about uncertainties.

3. Size estimates:  Object diameters are rough approximations derived by standard formula from H, an object's "absolute magnitude" (brightness), where higher numbers represent dimmer (thus usually smaller) objects.