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Legend - object IDs plus links to more info

Data compiled at 1912 UTC on 15 Feb. 2019 for 41 known objects during a period of seven days from 12 to 18 Feb. 2019. 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
AB52019 AB534.10 LD  departed
AR22019 AR233.98 LD  departed
AU2019 AU29.61 LD  departed
BC52019 BC539.72 LD  departed
BD52019 BD532.79 LD  departed
BE12019 BE138.86 LD  departed
BE52019 BE536.70 LD  departed
BF52019 BF581.11 LD  departed
BK42019 BK412.89 LD  departed
BO2019 BO46.37 LD  departed intruder
BO22019 BO268.15 LD  departed
BU12019 BU169.77 LD  departed
BX12019 BX131.20 LD+/- 4 minutes  departed
BY42019 BY481.52 LD+/- 2 minutes  departed
BZ2019 BZ39.13 LD  departed
BZ32019 BZ335.90 LD  departed intruder
CA22019 CA238.4 LD+/- 2.3167 hours  departed
CA32019 CA336.9 LD+/- 9 minutes  departed
CB22019 CB26.30 LD  departed
CB52019 CB515.1 LD+/- 24 minutes  departed
CG42019 CG41.78 LDoutbound
CG52019 CG55.93 LDinbound
CJ2019 CJ10.35 LD+/- one minuteapproaching
CJ42019 CJ418.05 LD  departed
CM52019 CM54.39 LD+/- 2 minutesoutbound
CN22019 CN21.75 LDoutbound
CN52019 CN52.46 LD+/- 3 minutes  departed intruder
CP52019 CP59.37 LD  departed
CQ52019 CQ56.12 LD  departed
CS52019 CS51.15 LDpassing
CT42019 CT432.6 LD+/- 10.4000 hoursapproaching
CV12019 CV143.8 LD+/- 11 minutes  departed
CW12019 CW123.0 LD+/- 21 minutes  departed
CY12019 CY15.34 LD+/- one minuteapproaching
CY22019 CY28.01 LD  departed
CZ22019 CZ215.87 LD  departed
PK92015 PK9102.6 LD  distant
PV252017 PV257.3 LD+/- 1.0667 hoursoutbound
TS42018 TS438.9 LD  distant
VX42013 VX497.41 LD  departed
YK22018 YK2192.54 LD  departed
DateTfc.Time
12 Feb. '19Rept. Line
13 Feb. '19Rept. Line
14 Feb. '19Rept. Line
15 Feb. '19Rept. Line
16 Feb. '19Rept. Line
17 Feb. '19 Line
18 Feb. '19 Line

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

2019 CS5   -   passing
Approximate diameter22 meters (H=25.903)
Closest Earth approach1.15 LD at 1907 UTC on 15 Feb. 2019
Inside Earth SOI14 to 17 Feb. 2019
Inside ten LD of Earth8 to 22 Feb. 2019
Closest Moon approach1.15 LD at 0223 UTC on 15 Feb. 2019
Data based onJPL SSD orbit solution #2 downloaded from JPL on 15 Feb. 2019 UTC
based on 87 observations spanning one day
Optical observation  
  • reported from 18 observing codes during 1.7379 days: 160, 203, 474, 595, 703, C77, C95, G96, H06, J95, K38, K63, K87, L01, W34, X31, Z80, Z99
  • designation assigned to Mt. Lemmon Survey observation at 0216 UTC 13 Feb. 2019
  • last observed at 1958 UTC on 14 Feb. 2019 by Great Shefford Obs.
NotesNHATS target
Links  
2019 CQ5   -     departed
Approximate diameter11 meters (H=27.462)
Closest Earth approach5.46 LD at 2148 UTC on 10 Feb. 2019
Inside ten LD of Earth7 to 14 Feb. 2019
Data based onJPL SSD orbit solution #2 downloaded from JPL on 15 Feb. 2019 UTC
based on 33 observations spanning 2 days
Optical observation  
  • reported from 8 observing codes during 2.6562 days: 204, 587, C95, G96, I52, J95, L01, V03
  • designation assigned to Mt. Lemmon Survey observation at 0714 UTC 12 Feb. 2019
  • last observed at 2259 UTC on 14 Feb. 2019 by Great Shefford Obs.
Links  
2019 CP5   -     departed
Approximate diameter17 meters (H=26.455)
Closest Earth approach9.05 LD at 0515 UTC on 11 Feb. 2019
Inside ten LD of Earth9 to 12 Feb. 2019
Data based onJPL SSD orbit solution #2 downloaded from JPL on 15 Feb. 2019 UTC
based on 60 observations spanning 3 days
Optical observation  
  • reported from 12 observing codes during 2.8098 days: 203, 204, 587, 734, C95, G96, I41, I52, J95, L01, V03, Z80
  • first observed at 0533 UTC on 12 Feb. 2019 by the Zwicky Transient Facility
  • designation assigned to Mt. Lemmon Survey observation at 0536 UTC 12 Feb. 2019
  • last observed at 0059 UTC on 15 Feb. 2019 by Great Shefford Obs.
Links  
2019 CN5   -     departed intruder
Approximate diameter9 meters (H=27.812)
Closest Earth approach0.31 LD at 0722 UTC on 11 Feb. 2019 - Note: JPL reports an approach uncertainty of +/- 3 minutes
Inside Earth-Moon system0054-1350 UTC on 11 Feb. 2019
Inside Earth SOI10 to 11 Feb. 2019
Inside ten LD of Earth8 to 14 Feb. 2019
Closest Moon approach0.70 LD at 0442 UTC on 11 Feb. 2019
Inside one LD of Moon2337 on 10 Feb. until 0944 UTC on 11 Feb. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 13 Feb. 2019 UTC
based on 32 observations
Optical observation  
  • reported from 9 observing codes during 18.269 hours: 204, 474, 587, 703, C95, I52, K88, L01, V03
  • designation assigned to Catalina Sky Survey observation at 0520 UTC 12 Feb. 2019
  • last observed at 2336 UTC on 12 Feb. 2019 by Schiaparelli Obs.
Links  
2019 CM5   -   outbound
Approximate diameter10 meters (H=27.758)
Closest Earth approach1.38 LD at 1503 UTC on 8 Feb. 2019 - Note: JPL reports an approach uncertainty of +/- 2 minutes
Inside Earth SOI7 to 10 Feb. 2019
Inside ten LD of Earth31 Jan. until 16 Feb. 2019
Closest Moon approach1.86 LD at 0204 UTC on 8 Feb. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 13 Feb. 2019 UTC
based on 19 observations spanning 2 days
Optical observation  
  • reported from 5 observing codes during 1.6649 days: 204, 474, G96, L01, V06
  • designation assigned to Mt. Lemmon Survey observation at 1025 UTC 11 Feb. 2019
  • last observed at 0222 UTC on 13 Feb. 2019 by Visnjan Obs.
Notesrisk
Links  
2019 CG5   -   inbound
Approximate diameter14 meters (H=26.962)
Closest Earth approach5.93 LD at 1834 UTC on 16 Feb. 2019
Inside ten LD of Earth12 to 20 Feb. 2019
Data based onJPL SSD orbit solution #2 downloaded from JPL on 15 Feb. 2019 UTC
based on 45 observations spanning 18 days
Optical observation  
  • reported from 11 observing codes during 18.4884 days: 104, 204, 587, C95, F51, G96, I52, J95, K88, L01, V03
  • first observed at 0900 UTC on 27 Jan. 2019 by Pan-STARRS 1
  • designation assigned to Mt. Lemmon Survey observation at 0610 UTC 11 Feb. 2019
  • last observed at 2044 UTC on 14 Feb. 2019 by Great Shefford Obs.
Links  
2019 CB5   -     departed
Approximate diameter8 meters (H=28.265)
Closest Earth approach8.86 LD at 1704 UTC on 25 Jan. 2019 - Note: JPL reports an approach uncertainty of +/- 24 minutes
Inside ten LD of Earth18 Jan. until 1 Feb. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 13 Feb. 2019 UTC
based on 13 observations spanning 3 days
Optical observation  
  • reported from 3 observing codes during 2.8491 days: G96, I52, V06
  • designation assigned to Mt. Lemmon Survey observation at 0931 UTC 9 Feb. 2019
  • last observed at 0554 UTC on 12 Feb. 2019 by the Catalina Sky Survey Kuiper Telescope
NotesNHATS target
Links  
2019 CT4   -   approaching
Approximate diameter52 meters (H=24.051)
Closest Earth approach6.00 LD at 1625 UTC on 2 March 2019 - Note: JPL reports an approach uncertainty of +/- 10.4000 hours
Inside ten LD of Earth27 Feb. until 5 March 2019
Data based onJPL SSD orbit solution #2 downloaded from JPL on 14 Feb. 2019 UTC
based on 16 observations spanning 3 days
Optical observation  
  • reported from 4 observing codes during 2.8904 days: F51, H21, V06, V37
  • designation assigned to Pan-STARRS 1 observation at 1308 UTC 9 Feb. 2019
  • last observed at 1030 UTC on 12 Feb. 2019 by LCO McDonald Obs.
Links  
2019 CJ4   -     departed
Approximate diameter29 meters (H=25.314)
Closest Earth approach7.41 LD at 0044 UTC on 5 Feb. 2019
Inside ten LD of Earth2 to 7 Feb. 2019
Data based onJPL SSD orbit solution #3 downloaded from JPL on 15 Feb. 2019 UTC
based on 40 observations spanning 7 days
Optical observation  
  • reported from 9 observing codes during 6.6360 days: 104, 106, 291, 703, G96, I52, J95, L01, Z99
  • designation assigned to Catalina Sky Survey observation at 0849 UTC 8 Feb. 2019
  • last observed at 0005 UTC on 15 Feb. 2019 by Great Shefford Obs.
Notesrisk, NHATS target
Links  
2019 CG4   -   outbound
Approximate diameter6 meters (H=28.945)
Closest Earth approach1.78 LD at 1154 UTC on 12 Feb. 2019
Inside Earth SOI11 to 13 Feb. 2019
Inside ten LD of Earth6 to 18 Feb. 2019
Closest Moon approach2.70 LD at 1127 UTC on 12 Feb. 2019
Data based onJPL SSD orbit solution #2 downloaded from JPL on 12 Feb. 2019 UTC
based on 17 observations spanning 4 days
Optical observation  
  • reported from 3 observing codes during 3.8125 days: G96, I52, J95
  • designation assigned to Mt. Lemmon Survey observation at 0729 UTC 8 Feb. 2019
  • last observed at 0259 UTC on 12 Feb. 2019 by Great Shefford Obs.
NotesNHATS target
Links  
2019 CA3   -     departed
Approximate diameter22 meters (H=25.912)
Closest Earth approach4.77 LD at 1422 UTC on 3 Feb. 2019 - Note: JPL reports an approach uncertainty of +/- 9 minutes
Inside ten LD of Earth1 to 5 Feb. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 10 Feb. 2019 UTC
based on 20 observations spanning 2 days
Optical observation  
  • reported from 4 observing codes during 1.8954 days: G96, H01, H21, I52
  • designation assigned to Mt. Lemmon Survey observation at 0600 UTC 8 Feb. 2019
  • last observed at 0330 UTC on 10 Feb. 2019 by ARO Westfield
Links  
2019 CZ2   -     departed
Approximate diameter45 meters (H=24.373)
Closest Earth approach4.45 LD at 1403 UTC on 31 Jan. 2019
Inside ten LD of Earth24 Jan. until 7 Feb. 2019
Data based onJPL SSD orbit solution #5 downloaded from JPL on 15 Feb. 2019 UTC
based on 27 observations spanning 10 days
Optical observation  
  • reported from 6 observing codes during 9.5108 days: 807, E23, G96, I52, K61, T08
  • designation assigned to ATLAS Mauna Loa observation at 1158 UTC 5 Feb. 2019
  • last observed at 0014 UTC on 15 Feb. 2019 by Rokycany Obs.
NotesNHATS target
Links  
2019 CY2   -     departed
Approximate diameter16 meters (H=26.644)
Closest Earth approach8.01 LD at 0333 UTC on 12 Feb. 2019
Inside ten LD of Earth10 to 14 Feb. 2019
Data based onJPL SSD orbit solution #5 downloaded from JPL on 14 Feb. 2019 UTC
based on 27 observations spanning 4 days
Optical observation  
  • reported from 6 observing codes during 4.1428 days: 104, 291, 703, H01, I52, L01
  • designation assigned to Catalina Sky Survey observation at 0717 UTC 8 Feb. 2019
  • last observed at 1043 UTC on 12 Feb. 2019 by Steward Obs. Mt. Lemmon Station
Notesrisk
Links  
2019 CN2   -   outbound
Approximate diameter8 meters (H=28.192)
Closest Earth approach1.47 LD at 1058 UTC on 11 Feb. 2019
Inside Earth SOI10 to 12 Feb. 2019
Inside ten LD of Earth5 to 17 Feb. 2019
Closest Moon approach1.84 LD at 1844 UTC on 11 Feb. 2019
Data based onJPL SSD orbit solution #2 downloaded from JPL on 13 Feb. 2019 UTC
based on 22 observations spanning 5 days
Optical observation  
  • reported from 6 observing codes during 4.5730 days: 104, 511, F51, G96, I52, L01
  • first observed at 1108 UTC on 4 Feb. 2019 by Pan-STARRS 1
  • designation assigned to Mt. Lemmon Survey observation at 0930 UTC 8 Feb. 2019
  • last observed at 0053 UTC on 9 Feb. 2019 by Haute Provence Obs.
NotesNHATS target
Links  
2019 CB2   -     departed
Approximate diameter22 meters (H=25.941)
Closest Earth approach2.72 LD at 0119 UTC on 10 Feb. 2019
Inside ten LD of Earth6 to 13 Feb. 2019
Data based onJPL SSD orbit solution #4 downloaded from JPL on 11 Feb. 2019 UTC
based on 66 observations spanning 4 days
Optical observation  
  • reported from 14 observing codes during 4.0594 days: 033, 104, 181, 203, 204, 568, 658, C65, F51, I52, J04, K51, L01, L18
  • designation assigned to Pan-STARRS 1 observation at 0924 UTC 5 Feb. 2019
  • last observed at 1049 UTC on 9 Feb. 2019 by Steward Obs. Mt. Lemmon Station
Links  
2019 CA2   -     departed
Approximate diameter12 meters (H=27.232)
Closest Earth approach4.77 LD at 1440 UTC on 26 Jan. 2019 - Note: JPL reports an approach uncertainty of +/- 2.3167 hours
Inside ten LD of Earth22 to 30 Jan. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 7 Feb. 2019 UTC
based on 12 observations spanning one day
Optical observation  
  • reported from 3 observing codes during 1.6062 days: 568, F51, L01
  • designation assigned to Pan-STARRS 1 observation at 0920 UTC 5 Feb. 2019
  • last observed at 2353 UTC on 6 Feb. 2019 by Visnjan Obs.
Links  
2019 CY1   -   approaching
Approximate diameter25 meters (H=25.642)
Closest Earth approach3.28 LD at 0842 UTC on 20 Feb. 2019
Inside ten LD of Earth17 to 23 Feb. 2019
Data based onJPL SSD orbit solution #5 downloaded from JPL on 15 Feb. 2019 UTC
based on 37 observations spanning 11 days
Optical observation  
  • reported from 9 observing codes during 10.6577 days: 291, 658, F51, F52, G96, I52, J04, J95, K61
  • first observed at 0848 UTC on 4 Feb. 2019 by Pan-STARRS 1
  • designation assigned to Pan-STARRS 2 observation at 0856 UTC 5 Feb. 2019
  • last observed at 0035 UTC on 15 Feb. 2019 by Great Shefford Obs.
Notesrisk
Links  
2019 CW1   -     departed
Approximate diameter8 meters (H=28.21)
Closest Earth approach2.41 LD at 0554 UTC on 30 Jan. 2019 - Note: JPL reports an approach uncertainty of +/- 21 minutes
Inside ten LD of Earth24 Jan. until 4 Feb. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 7 Feb. 2019 UTC
based on 13 observations spanning 2 days
Optical observation  
  • reported from 4 observing codes during 1.7660 days: 568, 807, F51, L01
  • designation assigned to Pan-STARRS 1 observation at 0820 UTC 5 Feb. 2019
  • last observed at 0243 UTC on 7 Feb. 2019 by Robert Holmes via Cerro Tololo Inter-American Obs.
NotesNHATS target
Links  
2019 CV1   -     departed
Approximate diameter27 meters (H=25.527)
Closest Earth approach8.30 LD at 1142 UTC on 22 Jan. 2019 - Note: JPL reports an approach uncertainty of +/- 11 minutes
Inside ten LD of Earth19 to 25 Jan. 2019
Data based onJPL SSD orbit solution #3 downloaded from JPL on 14 Feb. 2019 UTC
based on 43 observations spanning 7 days
Optical observation  
  • reported from 10 observing codes during 6.9103 days: 033, 204, 807, F51, G96, I52, J04, K88, L01, V06
  • designation assigned to Pan-STARRS 1 observation at 0818 UTC 5 Feb. 2019
  • last observed at 0609 UTC on 12 Feb. 2019 by the Catalina Sky Survey Kuiper Telescope
NotesNHATS target
Links  
2019 CJ   -   approaching
Approximate diameter25 meters (H=25.655)
Closest Earth approach7.39 LD at 1513 UTC on 25 Feb. 2019
Inside ten LD of Earth19 Feb. until 3 March 2019
Data based onJPL SSD orbit solution #4 downloaded from JPL on 15 Feb. 2019 UTC
based on 28 observations spanning 20 days
Optical observation  
  • reported from 7 observing codes during 20.4477 days: 568, 711, F51, H36, I52, K61, L01
  • first observed at 1147 UTC on 25 Jan. 2019 by Pan-STARRS 1
  • designation assigned to Pan-STARRS 1 observation at 0615 UTC 4 Feb. 2019
  • last observed at 2232 UTC on 14 Feb. 2019 by Rokycany Obs.
NotesNHATS target
Links  
2019 BF5   -     departed
Approximate diameter177 meters (H=21.41)
Closest Earth approach9.47 LD at 1738 UTC on 29 Jan. 2019
Inside ten LD of Earth29 to 30 Jan. 2019
Data based onJPL SSD orbit solution #7 downloaded from JPL on 14 Feb. 2019 UTC
based on 136 observations spanning 15 days
Optical observation  
  • reported from 21 observing codes during 14.6731 days: 033, 094, 160, 204, 474, 595, 703, C23, C47, F52, G40, G96, I41, I52, J04, J08, K33, K88, L01, T08, V01
  • designation assigned to Zwicky Transient Facility observation at 1209 UTC 28 Jan. 2019
  • last observed at 0418 UTC on 12 Feb. 2019 by the Mt. Lemmon Survey
Links  
2019 BE5   -     departed
Approximate diameter33 meters (H=25.084)
Closest Earth approach3.05 LD at 1935 UTC on 30 Jan. 2019
Inside ten LD of Earth27 Jan. until 2 Feb. 2019
Data based onJPL SSD orbit solution #5 downloaded from JPL on 12 Feb. 2019 UTC
based on 76 observations spanning 8 days
Optical observation  
  • reported from 18 observing codes during 7.8218 days: 033, 291, 381, 711, 718, A91, G34, H01, H06, H21, H36, I41, I52, J04, J69, J95, P93, T12
  • first observed at 0747 UTC on 31 Jan. 2019 by the Zwicky Transient Facility
  • designation assigned to Zwicky Transient Facility observation at 0851 UTC 31 Jan. 2019
  • last observed at 0330 UTC on 8 Feb. 2019 by the Spacewatch 1.8m telescope
Notesrisk
Links  
2019 BD5   -     departed
Approximate diameter15 meters (H=26.74)
Closest Earth approach2.84 LD at 0233 UTC on 30 Jan. 2019
Inside ten LD of Earth26 Jan. until 2 Feb. 2019
Data based onJPL SSD orbit solution #2 downloaded from JPL on 8 Feb. 2019 UTC
based on 59 observations spanning 8 days
Optical observation  
  • reported from 13 observing codes during 7.9879 days: 033, 711, C43, G34, H01, H21, I41, I52, K74, P93, V01, W34, Z99
  • designation assigned to Zwicky Transient Facility observation at 0644 UTC 31 Jan. 2019
  • last observed at 0627 UTC on 8 Feb. 2019 by Steward Obs. Mt. Lemmon Station
Links  
2019 BC5   -     departed
Approximate diameter28 meters (H=25.398)
Closest Earth approach7.01 LD at 0410 UTC on 2 Feb. 2019
Inside ten LD of Earth31 Jan. until 3 Feb. 2019
Data based onJPL SSD orbit solution #2 downloaded from JPL on 3 Feb. 2019 UTC
based on 37 observations spanning 3 days
Optical observation  
  • reported from 6 observing codes during 2.9225 days: 033, H01, H21, I41, J95, P93
  • designation assigned to Zwicky Transient Facility observation at 0602 UTC 31 Jan. 2019
  • last observed at 0410 UTC on 3 Feb. 2019 by Great Shefford Obs.
Links  
2019 BY4   -     departed
Approximate diameter52 meters (H=24.077)
Closest Earth approach9.10 LD at 0756 UTC on 23 Jan. 2019 - Note: JPL reports an approach uncertainty of +/- 2 minutes
Inside ten LD of Earth22 to 24 Jan. 2019
Data based onJPL SSD orbit solution #3 downloaded from JPL on 14 Feb. 2019 UTC
based on 51 observations spanning 12 days
Optical observation  
  • reported from 11 observing codes during 11.8443 days: 033, 474, 703, 711, F51, H01, H21, J95, P93, V06, Z99
  • designation assigned to Catalina Sky Survey observation at 0709 UTC 30 Jan. 2019
  • last observed at 0325 UTC on 11 Feb. 2019 by the Catalina Sky Survey Kuiper Telescope
Links  
2019 BK4   -     departed
Approximate diameter13 meters (H=27.147)
Closest Earth approach4.14 LD at 0128 UTC on 6 Feb. 2019
Inside ten LD of Earth1 to 10 Feb. 2019
Data based onJPL SSD orbit solution #3 downloaded from JPL on 3 Feb. 2019 UTC
based on 27 observations spanning 5 days
Optical observation  
  • reported from 5 observing codes during 5.6411 days: 033, G96, I52, J95, L01
  • designation assigned to Mt. Lemmon Survey observation at 0717 UTC 28 Jan. 2019
  • last observed at 2240 UTC on 2 Feb. 2019 by Great Shefford Obs.
NotesNHATS target
Links  
2019 BZ3   -     departed intruder
Approximate diameter6 meters (H=28.719)
Closest Earth approach0.13 LD at 2328 UTC on 27 Jan. 2019
Inside Earth-Moon system1339 on 27 Jan. until 0916 UTC on 28 Jan. 2019
Inside Earth SOI26 to 28 Jan. 2019
Inside ten LD of Earth23 Jan. until 1 Feb. 2019
Closest Moon approach0.91 LD at 0507 UTC on 28 Jan. 2019
Inside one LD of Moon0116-0901 UTC on 28 Jan. 2019
Data based onJPL SSD orbit solution #3 downloaded from JPL on 7 Feb. 2019 UTC
based on 28 observations spanning 8 days
Optical observation  
  • reported from 5 observing codes during 8.1398 days: 587, G96, I52, L01, T12
  • designation assigned to Mt. Lemmon Survey observation at 1015 UTC 28 Jan. 2019
  • last observed at 1337 UTC on 5 Feb. 2019 by UH/Tholen NEO Follow-Up 2.24m Telescope
Notesrisk
Links  
2019 BO2   -     departed
Approximate diameter21 meters (H=25.997)
Closest Earth approach6.71 LD at 2333 UTC on 24 Jan. 2019
Inside ten LD of Earth22 to 26 Jan. 2019
Data based onJPL SSD orbit solution #3 downloaded from JPL on 5 Feb. 2019 UTC
based on 34 observations spanning 2 days
Optical observation  
  • reported from 7 observing codes during 2.1438 days: 104, 160, B04, G96, I52, L01, V03
  • designation assigned to Mt. Lemmon Survey observation at 0740 UTC 26 Jan. 2019
  • last observed at 1107 UTC on 28 Jan. 2019 by Steward Obs. Mt. Lemmon Station
Links  
2019 BX1   -     departed
Approximate diameter8 meters (H=28.205)
Closest Earth approach1.39 LD at 1548 UTC on 8 Jan. 2019 - Note: JPL reports an approach uncertainty of +/- 4 minutes
Inside Earth SOI6 to 10 Jan. 2019
Inside ten LD of Earth28 Dec. until 19 Jan. 2019
Closest Moon approach1.85 LD at 1940 UTC on 7 Jan. 2019
Data based onJPL SSD orbit solution #2 downloaded from JPL on 11 Feb. 2019 UTC
based on 17 observations spanning 20 days
Optical observation  
  • reported from 5 observing codes during 19.8834 days: F51, G96, T12, T14, V06
  • designation assigned to Pan-STARRS 1 observation at 1522 UTC 16 Jan. 2019
  • last observed at 1234 UTC on 5 Feb. 2019 by UH/Tholen NEO Follow-Up CFH Telescope
Notesrisk, NHATS target
Links  
2019 BU1   -     departed
Approximate diameter20 meters (H=26.162)
Closest Earth approach2.98 LD at 1227 UTC on 22 Jan. 2019
Inside ten LD of Earth19 to 25 Jan. 2019
Data based onJPL SSD orbit solution #8 downloaded from JPL on 12 Feb. 2019 UTC
based on 61 observations spanning 15 days
Optical observation  
  • reported from 16 observing codes during 15.1018 days: 104, 160, 203, 291, 587, 595, 691, 703, 711, G96, H01, I52, J95, L01, P93, T12
  • designation assigned to Catalina Sky Survey observation at 0750 UTC 25 Jan. 2019
  • last observed at 1016 UTC on 9 Feb. 2019 by the Spacewatch 1.8m telescope
Notesrisk
Links  
2019 BE1   -     departed
Approximate diameter39 meters (H=24.72)
Closest Earth approach6.52 LD at 0513 UTC on 22 Jan. 2019
Inside ten LD of Earth18 to 26 Jan. 2019
Data based onJPL SSD orbit solution #5 downloaded from JPL on 14 Feb. 2019 UTC
based on 59 observations spanning 38 days
Optical observation  
  • reported from 11 observing codes during 38.1146 days: 204, 595, 703, F51, F52, I52, K38, L01, T05, T08, V06
  • first observed at 0635 UTC on 5 Jan. 2019 by Pan-STARRS 1
  • designation assigned to ATLAS Haleakala observation at 1042 UTC 23 Jan. 2019
  • last observed at 0920 UTC on 12 Feb. 2019 by the Catalina Sky Survey Kuiper Telescope
Links  
2019 BZ   -     departed
Approximate diameter10 meters (H=27.588)
Closest Earth approach2.44 LD at 1713 UTC on 23 Jan. 2019
Inside ten LD of Earth18 to 28 Jan. 2019
Data based onJPL SSD orbit solution #6 downloaded from JPL on 12 Feb. 2019 UTC
based on 36 observations spanning 12 days
Optical observation  
  • reported from 9 observing codes during 12.0973 days: 291, 587, G96, I41, I52, J95, L01, T12, V03
  • first observed at 0419 UTC on 24 Jan. 2019 by the Zwicky Transient Facility
  • designation assigned to Zwicky Transient Facility observation at 0420 UTC 24 Jan. 2019
  • last observed at 0639 UTC on 5 Feb. 2019 by UH/Tholen NEO Follow-Up 2.24m Telescope
Notesrisk, NHATS target
Links  
2019 BO   -     departed intruder
Approximate diameter8 meters (H=28.13)
Closest Earth approach0.18 LD at 0112 UTC on 16 Jan. 2019
Inside Earth-Moon system1117 on 15 Jan. until 1507 UTC on 16 Jan. 2019
Inside Earth SOI14 to 17 Jan. 2019
Inside ten LD of Earth10 to 22 Jan. 2019
Closest Moon approach0.86 LD at 2111 UTC on 15 Jan. 2019
Inside one LD of Moon1257 on 15 Jan. until 0433 UTC on 16 Jan. 2019
Data based onJPL SSD orbit solution #3 downloaded from JPL on 8 Feb. 2019 UTC
based on 19 observations spanning 19 days
Optical observation  
  • reported from 6 observing codes during 19.1852 days: 291, 703, 807, I52, T08, T12
  • designation assigned to Catalina Sky Survey observation at 0606 UTC 17 Jan. 2019
  • last observed at 1033 UTC on 5 Feb. 2019 by UH/Tholen NEO Follow-Up 2.24m Telescope
Notesrisk, NHATS target
Links  
2019 AB5   -     departed
Approximate diameter27 meters (H=25.517)
Closest Earth approach7.45 LD at 2255 UTC on 19 Jan. 2019
Inside ten LD of Earth15 to 24 Jan. 2019
Data based onJPL SSD orbit solution #6 downloaded from JPL on 5 Feb. 2019 UTC
based on 29 observations spanning 34 days
Optical observation  
  • reported from 7 observing codes during 33.9566 days: 204, 474, 568, 807, F51, I52, L01
  • designation assigned to Pan-STARRS 1 observation at 0853 UTC 2 Jan. 2019
  • last observed at 0750 UTC on 5 Feb. 2019 by Robert Holmes via Cerro Tololo Inter-American Obs.
Links  
2019 AR2   -     departed
Approximate diameter47 meters (H=24.3)
Closest Earth approach7.60 LD at 1428 UTC on 13 Jan. 2019
Inside ten LD of Earth7 to 19 Jan. 2019
Data based onJPL SSD orbit solution #20 downloaded from JPL on 11 Feb. 2019 UTC
based on 187 observations spanning 37 days
Optical observation  
  • reported from 25 observing codes during 37.2070 days: 160, 203, 204, 474, 587, 595, 703, 807, B49, B66, F52, G96, H21, I19, I52, K38, K61, K83, K88, L01, P93, T05, T08, W34, Z80
  • designation assigned to ATLAS Haleakala observation at 0840 UTC 3 Jan. 2019
  • last observed at 1339 UTC on 9 Feb. 2019 by Pan-STARRS 2
NotesNHATS target
Links  
2019 AU   -     departed
Approximate diameter16 meters (H=26.6)
Closest Earth approach7.77 LD at 2106 UTC on 5 Jan. 2019
Inside ten LD of Earth27 Dec. until 14 Jan. 2019
Data based onJPL SSD orbit solution #9 downloaded from JPL on 6 Feb. 2019 UTC
based on 48 observations spanning 30 days
Optical observation  
  • reported from 11 observing codes during 29.8380 days: 204, 291, 474, 568, 691, F51, H21, I19, I52, K38, K88
  • designation assigned to Pan-STARRS 1 observation at 0905 UTC 3 Jan. 2019
  • last observed at 0512 UTC on 2 Feb. 2019 by ARO Westfield
NotesNHATS target
Links  
2018 YK2   -     departed
Approximate diameter98 meters (H=22.7)
Closest Earth approach8.01 LD at 2111 UTC on 23 Dec. 2018
Inside ten LD of Earth22 to 25 Dec. 2018
Data based onJPL SSD orbit solution #10 downloaded from JPL on 6 Feb. 2019 UTC
based on 133 observations spanning 2018-2019
Optical observation  
  • reported from 24 observing codes during 39.9389 days: 104, 204, 587, 595, 703, B49, C77, F51, G40, G96, H21, H36, I52, J08, J22, J95, K38, K88, L01, P93, T05, Z43, Z80, Z99
  • first observed at 0711 UTC on 24 Dec. 2018 by Pan-STARRS 1
  • designation assigned to ATLAS Haleakala observation at 1058 UTC 28 Dec. 2018
  • last observed at 0543 UTC on 2 Feb. 2019 by ARO Westfield
Links  
2018 TS4   -     distant
Approximate diameter11 meters (H=27.5)
Closest Earth approach
Distance from Earth36.2 LD during the observation period
Data based onJPL SSD orbit solution #3 downloaded from JPL on 13 Feb. 2019 UTC
based on 28 observations spanning 2018-2019
Optical observation  
  • reported from one observing code during 0.149 hours: T12
  • first observed at 1037 UTC on 6 Feb. 2019 by UH/Tholen NEO Follow-Up 2.24m Telescope
  • last observed at 1046 UTC on 6 Feb. 2019 by UH/Tholen NEO Follow-Up 2.24m Telescope
NotesNHATS target
previous passage Oct. 2018 at 5.17 LD
Links  
2017 PV25   -   outbound
Approximate diameter41 meters (H=24.6)
Closest Earth approach7.26 LD at 1241 UTC on 12 Feb. 2019 - Note: JPL reports an approach uncertainty of +/- 1.0667 hours
Inside ten LD of Earth7 to 17 Feb. 2019
Data based onJPL SSD orbit solution #8 downloaded from JPL on 24 Jan. 2019 UTC (dated 15 April 2018 local)
based on 84 observations spanning 30 days
Optical observation  
    none recent
NotesNHATS target
previous passage Aug. 2017 at 5.50 LD
Links  
2015 PK9   -     distant
Approximate diameter62 meters (H=23.7)
Closest Earth approach
Distance from Earth113.0 - 114.4 LD min-max during the observation period
Data based onJPL SSD orbit solution #26 downloaded from JPL on 7 Feb. 2019 UTC
based on 267 observations spanning 2015-2019 including radar
Optical observation  
  • reported from one observing code during 23.525 hours: J04
  • first observed at 2213 UTC on 4 Feb. 2019 by ESA Optical Ground Station
  • last observed at 2144 UTC on 5 Feb. 2019 by ESA Optical Ground Station
NotesNHATS target
previous passage Aug. 2015 at 5.77 LD
Links  
2013 VX4   -     departed
Approximate diameter56 meters (H=23.9)
Closest Earth approach3.49 LD at 1556 UTC on 11 Dec. 2018
Inside ten LD of Earth5 to 17 Dec. 2018
Data based onJPL SSD orbit solution #11 downloaded from JPL on 13 Feb. 2019 UTC
based on 60 observations spanning 2013-2019
Optical observation  
  • reported from 7 observing codes during 122.0140 days: 691, 703, F51, F52, G96, H21, L01
  • first observed at 0826 UTC on 10 Oct. 2018 by Pan-STARRS 2
  • designation assigned to Catalina Sky Survey observation at 1201 UTC 14 Dec. 2018
  • last observed at 0846 UTC on 9 Feb. 2019 by ARO Westfield
Notesother ID: 2018 XM4
previous observation Oct.-Nov. 2013
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.