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Legend - object IDs plus links to more info

Data compiled at 2214 UTC on 22 Jan. 2020 for 47 known objects during a period of seven days from 19 to 25 Jan. 2020. 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
AB2020 AB30.89 LD  departed
AB22020 AB211.46 LD  departed
AC12020 AC122.52 LD  departed
AD12020 AD19.15 LDoutbound
AE12020 AE18.3 LD+/- 1.2833 hours  departed
AH32020 AH326.93 LD  departed
AK32020 AK38.30 LDinbound
AL32020 AL38.14 LD  departed
AM32020 AM37.43 LD  departed
AN32020 AN310.90 LD  departed
AO2020 AO20.80 LD+/- 3 minutes  departed
AP32020 AP321.5 LD+/- 9.2667 hours  departed
AT12020 AT113.46 LD  departed
AW2020 AW13.08 LD  departed
AX22020 AX213.00 LD  departed
AY12020 AY124.67 LD  departed
AZ12020 AZ18.64 LDoutbound
BA742013 BA7415.74 LDapproaching
BB2020 BB2.00 LDoutbound
BB12020 BB12.56 LDinbound
BC142016 BC1478.3 LD  distant
BD2020 BD11.84 LD+/- 6 minutes  departed
BD12020 BD112.29 LD+/- 5 minutes  departed
BF12020 BF17.7 LD+/- 20 minutesinbound
BH2020 BH4.64 LD+/- 5 minutesoutbound
BK2020 BK6.4 LD+/- 12 minutesoutbound
BL2020 BL8.50 LD+/- 7 minutes  departed
BM52018 BM513.1 LD  distant
BN2020 BN9.8 LD+/- 25 minutesoutbound
BN12020 BN14.67 LD  departed
BP2020 BP3.67 LDoutbound
BS2020 BS4.91 LDoutbound
BS12020 BS16.62 LD+/- 2 minutesoutbound
BV22020 BV28.9 LD+/- 14 minutesoutbound
BY2020 BY3.82 LDoutbound
BY12020 BY18.68 LD+/- 4 minutes  departed
BZ12020 BZ17.2 LD+/- 12 minutes  departed
WG22019 WG2186.57 LD  departed intruder
YA12019 YA138.07 LD  departed
YA42019 YA488.83 LD  departed
YD32019 YD37.50 LDoutbound
YF42019 YF46.61 LDoutbound
YL2019 YL48.11 LD  departed
YP32019 YP362.38 LD  departed
YV12019 YV143.85 LD  departed
YW22019 YW284.26 LD  departed
YX12019 YX147.98 LD  departed
DateTfc.Time
19 Jan. '20Rept. Line
20 Jan. '20Rept. Line
21 Jan. '20Rept. Line
22 Jan. '20Rept. Line
23 Jan. '20Rept. Line
24 Jan. '20 Line
25 Jan. '20 Line

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

2020 BV2   -   outbound
Approximate diameter9 meters (H=27.765)
Closest Earth approach8.56 LD at 2033 UTC on 15 Jan. 2020 - Note: JPL reports an approach uncertainty of +/- 14 minutes
Inside ten LD of Earth9 to 22 Jan. 2020
Data based onJPL SSD orbit solution #1 downloaded from JPL on 22 Jan. 2020 UTC
based on 9 observations spanning 2 days
Optical observation  
  • reported from 3 observing codes during 2.4694 days: 033, F51, F52
  • designation assigned to Pan-STARRS 1 observation at 1202 UTC 19 Jan. 2020
  • last observed at 2318 UTC on 21 Jan. 2020 by Schwarzschild Obs.
Links  
2020 BZ1   -     departed
Approximate diameter14 meters (H=26.893)
Closest Earth approach2.49 LD at 0127 UTC on 15 Jan. 2020 - Note: JPL reports an approach uncertainty of +/- 12 minutes
Inside ten LD of Earth9 to 20 Jan. 2020
Data based onJPL SSD orbit solution #1 downloaded from JPL on 21 Jan. 2020 UTC
based on 13 observations spanning 2 days
Optical observation  
  • reported from 4 observing codes during 1.5414 days: 033, F52, J95, L01
  • designation assigned to Pan-STARRS 2 observation at 1341 UTC 19 Jan. 2020
  • last observed at 0241 UTC on 21 Jan. 2020 by Great Shefford Obs.
Links  
2020 BY1   -     departed
Approximate diameter20 meters (H=26.15)
Closest Earth approach4.19 LD at 2347 UTC on 16 Jan. 2020 - Note: JPL reports an approach uncertainty of +/- 4 minutes
Inside ten LD of Earth14 to 19 Jan. 2020
Data based onJPL SSD orbit solution #2 downloaded from JPL on 22 Jan. 2020 UTC
based on 37 observations spanning one day
Optical observation  
  • reported from 9 observing codes during 1.4808 days: 033, 203, 246, 734, 807, F51, H36, J95, L01
  • first observed at 1103 UTC on 20 Jan. 2020 by Pan-STARRS 1
  • designation assigned to Pan-STARRS 1 observation at 1108 UTC 20 Jan. 2020
  • last observed at 2236 UTC on 21 Jan. 2020 by KLENOT
Notesrisk
Links  
2020 BS1   -   outbound
Approximate diameter19 meters (H=26.209)
Closest Earth approach6.62 LD at 1335 UTC on 21 Jan. 2020 - Note: JPL reports an approach uncertainty of +/- 2 minutes
Inside ten LD of Earth15 to 27 Jan. 2020
Data based onJPL SSD orbit solution #3 downloaded from JPL on 22 Jan. 2020 UTC
based on 55 observations spanning 2 days
Optical observation  
  • reported from 13 observing codes during 1.8112 days: 033, 203, 246, 595, 703, 734, C43, H01, I52, J95, K61, L01, Z99
  • designation assigned to Catalina Sky Survey observation at 0438 UTC 20 Jan. 2020
  • last observed at 0006 UTC on 22 Jan. 2020 by KLENOT
NotesNHATS target
Links  
2020 BN1   -     departed
Approximate diameter11 meters (H=27.485)
Closest Earth approach3.43 LD at 1253 UTC on 17 Jan. 2020
Inside ten LD of Earth13 to 21 Jan. 2020
Data based onJPL SSD orbit solution #2 downloaded from JPL on 21 Jan. 2020 UTC
based on 22 observations spanning 2 days
Optical observation  
  • reported from 5 observing codes during 2.5378 days: 033, F51, F52, J95, L01
  • first observed at 1037 UTC on 18 Jan. 2020 by Pan-STARRS 1
  • designation assigned to Pan-STARRS 1 observation at 1036 UTC 20 Jan. 2020
  • last observed at 2331 UTC on 20 Jan. 2020 by Great Shefford Obs.
Links  
2020 BF1   -   inbound
Approximate diameter21 meters (H=26.089)
Closest Earth approach7.73 LD at 0527 UTC on 24 Jan. 2020 - Note: JPL reports an approach uncertainty of +/- 20 minutes
Inside ten LD of Earth18 to 30 Jan. 2020
Data based onJPL SSD orbit solution #1 downloaded from JPL on 20 Jan. 2020 UTC
based on 19 observations spanning one day
Optical observation  
  • reported from 4 observing codes during 22.006 hours: F52, G96, H01, I52
  • designation assigned to Mt. Lemmon Survey observation at 1225 UTC 19 Jan. 2020
  • last observed at 1025 UTC on 20 Jan. 2020 by Magdalena Ridge Obs.
Notesrisk, NHATS target
Links  
2020 BD1   -     departed
Approximate diameter11 meters (H=27.35)
Closest Earth approach4.03 LD at 0134 UTC on 16 Jan. 2020 - Note: JPL reports an approach uncertainty of +/- 5 minutes
Inside ten LD of Earth13 to 18 Jan. 2020
Data based onJPL SSD orbit solution #1 downloaded from JPL on 20 Jan. 2020 UTC
based on 9 observations spanning one day
Optical observation  
  • reported from 2 observing codes during 23.659 hours: F51, G96
  • designation assigned to Mt. Lemmon Survey observation at 0825 UTC 18 Jan. 2020
  • last observed at 0805 UTC on 19 Jan. 2020 by the Mt. Lemmon Survey
Notesrisk
Links  
2020 BB1   -   inbound
Approximate diameter8 meters (H=28.161)
Closest Earth approach2.56 LD at 0838 UTC on 23 Jan. 2020
Inside ten LD of Earth19 to 27 Jan. 2020
Data based onJPL SSD orbit solution #2 downloaded from JPL on 22 Jan. 2020 UTC
based on 17 observations spanning 3 days
Optical observation  
  • reported from 4 observing codes during 2.7669 days: 246, G96, H01, I52
  • designation assigned to Mt. Lemmon Survey observation at 0630 UTC 19 Jan. 2020
  • last observed at 0055 UTC on 22 Jan. 2020 by KLENOT
Links  
2020 BY   -   outbound
Approximate diameter43 meters (H=24.471)
Closest Earth approach3.82 LD at 2156 UTC on 21 Jan. 2020
Inside ten LD of Earth19 to 24 Jan. 2020
Data based onJPL SSD orbit solution #3 downloaded from JPL on 22 Jan. 2020 UTC
based on 44 observations spanning 5 days
Optical observation  
  • reported from 7 observing codes during 4.5020 days: 595, F51, J95, L01, P93, T05, T08
  • first observed at 1324 UTC on 16 Jan. 2020 by Pan-STARRS 1
  • designation assigned to ATLAS Haleakala observation at 1301 UTC 19 Jan. 2020
  • last observed at 0127 UTC on 21 Jan. 2020 by Great Shefford Obs.
Links  
2020 BS   -   outbound
Approximate diameter9 meters (H=27.953)
Closest Earth approach2.99 LD at 1830 UTC on 14 Jan. 2020
Inside ten LD of Earth4 to 25 Jan. 2020
Data based onJPL SSD orbit solution #3 downloaded from JPL on 22 Jan. 2020 UTC
based on 26 observations spanning 6 days
Optical observation  
  • reported from 6 observing codes during 5.8802 days: 246, 958, I41, I93, L01, T05
  • designation assigned to Zwicky Transient Facility observation at 0356 UTC 16 Jan. 2020
  • last observed at 0103 UTC on 22 Jan. 2020 by KLENOT
NotesNHATS target
Links  
2020 BP   -   outbound
Approximate diameter25 meters (H=25.63)
Closest Earth approach3.67 LD at 1712 UTC on 21 Jan. 2020
Inside ten LD of Earth19 to 24 Jan. 2020
Data based onJPL SSD orbit solution #3 downloaded from JPL on 22 Jan. 2020 UTC
based on 76 observations spanning 3 days
Optical observation  
  • reported from 17 observing codes during 2.7569 days: 104, 203, 204, 474, 587, 703, 711, 734, C77, C95, I52, J95, K30, K38, K96, Z43, Z99
  • designation assigned to Catalina Sky Survey observation at 0726 UTC 18 Jan. 2020
  • last observed at 0136 UTC on 21 Jan. 2020 by Great Shefford Obs.
Links  
2020 BN   -   outbound
Approximate diameter9 meters (H=27.828)
Closest Earth approach9.77 LD at 2352 UTC on 21 Jan. 2020 - Note: JPL reports an approach uncertainty of +/- 25 minutes
Inside ten LD of Earth20 to 23 Jan. 2020
Data based onJPL SSD orbit solution #1 downloaded from JPL on 19 Jan. 2020 UTC
based on 11 observations spanning one day
Optical observation  
  • reported from 2 observing codes during 24.149 hours: G96, J95
  • designation assigned to Mt. Lemmon Survey observation at 0639 UTC 18 Jan. 2020
  • last observed at 0647 UTC on 19 Jan. 2020 by the Mt. Lemmon Survey
Links  
2020 BL   -     departed
Approximate diameter14 meters (H=26.978)
Closest Earth approach8.16 LD at 1145 UTC on 17 Jan. 2020 - Note: JPL reports an approach uncertainty of +/- 7 minutes
Inside ten LD of Earth13 to 21 Jan. 2020
Data based onJPL SSD orbit solution #1 downloaded from JPL on 19 Jan. 2020 UTC
based on 20 observations spanning one day
Optical observation  
  • reported from 5 observing codes during 24.758 hours: 104, 711, G96, H01, J95
  • designation assigned to Mt. Lemmon Survey observation at 0753 UTC 18 Jan. 2020
  • last observed at 0839 UTC on 19 Jan. 2020 by McDonald Obs.
Links  
2020 BK   -   outbound
Approximate diameter16 meters (H=26.605)
Closest Earth approach6.38 LD at 0656 UTC on 19 Jan. 2020 - Note: JPL reports an approach uncertainty of +/- 12 minutes
Inside ten LD of Earth11 to 27 Jan. 2020
Data based onJPL SSD orbit solution #1 downloaded from JPL on 19 Jan. 2020 UTC
based on 25 observations spanning one day
Optical observation  
  • reported from 7 observing codes during 24.799 hours: 104, 204, 703, 711, C95, I52, J95
  • designation assigned to Catalina Sky Survey observation at 0906 UTC 18 Jan. 2020
  • last observed at 0954 UTC on 19 Jan. 2020 by McDonald Obs.
NotesNHATS target
Links  
2020 BH   -   outbound
Approximate diameter8 meters (H=28.194)
Closest Earth approach2.73 LD at 0108 UTC on 14 Jan. 2020 - Note: JPL reports an approach uncertainty of +/- 5 minutes
Inside ten LD of Earth1 to 26 Jan. 2020
Data based onJPL SSD orbit solution #1 downloaded from JPL on 19 Jan. 2020 UTC
based on 28 observations spanning one day
Optical observation  
  • reported from 7 observing codes during 1.0422 days: 104, 204, 587, 703, 711, 734, I52
  • designation assigned to Catalina Sky Survey observation at 0757 UTC 18 Jan. 2020
  • last observed at 0858 UTC on 19 Jan. 2020 by Farpoint Obs.
Notesrisk, NHATS target
Links  
2020 BD   -     departed
Approximate diameter19 meters (H=26.221)
Closest Earth approach4.84 LD at 1947 UTC on 14 Jan. 2020 - Note: JPL reports an approach uncertainty of +/- 6 minutes
Inside ten LD of Earth11 to 18 Jan. 2020
Data based onJPL SSD orbit solution #3 downloaded from JPL on 20 Jan. 2020 UTC
based on 24 observations spanning one day
Optical observation  
  • reported from 7 observing codes during 22.342 hours: 104, 587, 711, F51, G96, I52, J95
  • designation assigned to Mt. Lemmon Survey observation at 0831 UTC 18 Jan. 2020
  • last observed at 0652 UTC on 19 Jan. 2020 by Steward Obs. Mt. Lemmon Station
Links  
2020 BB   -   outbound
Approximate diameter6 meters (H=28.594)
Closest Earth approach2.00 LD at 1748 UTC on 21 Jan. 2020
Inside Earth SOI20 to 23 Jan. 2020
Inside ten LD of Earth9 Jan. until 2 Feb. 2020
Closest Moon approach2.32 LD at 0551 UTC on 22 Jan. 2020
Data based onJPL SSD orbit solution #5 downloaded from JPL on 22 Jan. 2020 UTC
based on 80 observations spanning 4 days
Optical observation  
  • reported from 16 observing codes during 3.7775 days: 104, 204, 246, 474, 587, 703, C77, C95, I52, J69, J95, K38, K63, T05, Z80, Z99
  • designation assigned to Catalina Sky Survey observation at 0656 UTC 18 Jan. 2020
  • last observed at 0135 UTC on 22 Jan. 2020 by KLENOT
Notesrisk, NHATS target
Links  
2020 AP3   -     departed
Approximate diameter17 meters (H=26.537)
Closest Earth approach6.52 LD at 1125 UTC on 1 Jan. 2020 - Note: JPL reports an approach uncertainty of +/- 9.2667 hours
Inside ten LD of Earth25 Dec. until 8 Jan. 2020
Data based onJPL SSD orbit solution #1 downloaded from JPL on 16 Jan. 2020 UTC
based on 15 observations spanning one day
Optical observation  
  • reported from 3 observing codes during 1.1015 days: G96, H01, I52
  • designation assigned to Mt. Lemmon Survey observation at 0320 UTC 14 Jan. 2020
  • last observed at 0547 UTC on 15 Jan. 2020 by the Mt. Lemmon Survey
NotesNHATS target
Links  
2020 AN3   -     departed
Approximate diameter288 meters (H=20.353)
Closest Earth approach7.92 LD at 0134 UTC on 17 Jan. 2020
Inside ten LD of Earth15 to 18 Jan. 2020
Data based onJPL SSD orbit solution #5 downloaded from JPL on 18 Jan. 2020 UTC
based on 127 observations spanning 2019-2020
Optical observation  
  • reported from 25 observing codes during 69.7254 days: 204, 246, 585, 587, 595, 703, 958, C23, C82, C95, G96, H01, H06, I52, J04, J69, J95, K38, K61, L18, L34, P93, Z43, Z80, Z99
  • first observed at 0331 UTC on 9 Nov. 2019 by the Mt. Lemmon Survey
  • designation assigned to Catalina Sky Survey observation at 0146 UTC 14 Jan. 2020
  • last observed at 2056 UTC on 17 Jan. 2020 by ESA Optical Ground Station
Notesrisk
Links  
2020 AM3   -     departed
Approximate diameter35 meters (H=24.923)
Closest Earth approach7.43 LD at 0628 UTC on 19 Jan. 2020
Inside ten LD of Earth17 to 20 Jan. 2020
Data based onJPL SSD orbit solution #4 downloaded from JPL on 18 Jan. 2020 UTC
based on 45 observations spanning 16 days
Optical observation  
  • reported from 8 observing codes during 16.4123 days: 203, 246, F51, G96, H01, I52, J69, J95
  • first observed at 1217 UTC on 1 Jan. 2020 by Pan-STARRS 1
  • designation assigned to Mt. Lemmon Survey observation at 0704 UTC 14 Jan. 2020
  • last observed at 2211 UTC on 17 Jan. 2020 by Great Shefford Obs.
Links  
2020 AL3   -     departed
Approximate diameter20 meters (H=26.113)
Closest Earth approach6.05 LD at 0135 UTC on 17 Jan. 2020
Inside ten LD of Earth14 to 19 Jan. 2020
Data based onJPL SSD orbit solution #4 downloaded from JPL on 18 Jan. 2020 UTC
based on 52 observations spanning 4 days
Optical observation  
  • reported from 6 observing codes during 3.8439 days: 204, 246, 595, I41, I52, J95
  • designation assigned to Zwicky Transient Facility observation at 0543 UTC 14 Jan. 2020
  • last observed at 0158 UTC on 18 Jan. 2020 by Steward Obs. Mt. Lemmon Station
Links  
2020 AK3   -   inbound
Approximate diameter21 meters (H=26.04)
Closest Earth approach8.30 LD at 0722 UTC on 25 Jan. 2020
Inside ten LD of Earth21 to 28 Jan. 2020
Data based onJPL SSD orbit solution #5 downloaded from JPL on 22 Jan. 2020 UTC
based on 30 observations spanning 7 days
Optical observation  
  • reported from 6 observing codes during 7.5524 days: 246, G96, H01, I52, J04, J95
  • designation assigned to Mt. Lemmon Survey observation at 0709 UTC 14 Jan. 2020
  • last observed at 2024 UTC on 21 Jan. 2020 by KLENOT
NotesNHATS target
Links  
2020 AH3   -     departed
Approximate diameter48 meters (H=24.255)
Closest Earth approach8.99 LD at 0146 UTC on 11 Jan. 2020
Inside ten LD of Earth9 to 12 Jan. 2020
Data based onJPL SSD orbit solution #3 downloaded from JPL on 18 Jan. 2020 UTC
based on 42 observations spanning 3 days
Optical observation  
  • reported from 9 observing codes during 3.8546 days: 246, 595, 958, C95, G96, H01, I52, J95, Z99
  • designation assigned to Mt. Lemmon Survey observation at 0216 UTC 14 Jan. 2020
  • last observed at 2247 UTC on 17 Jan. 2020 by Great Shefford Obs.
Links  
2020 AX2   -     departed
Approximate diameter27 meters (H=25.5)
Closest Earth approach9.93 LD at 0957 UTC on 13 Jan. 2020
Inside ten LD of Earth12 to 14 Jan. 2020
Data based onJPL SSD orbit solution #2 downloaded from JPL on 14 Jan. 2020 UTC
based on 39 observations spanning 7 days
Optical observation  
  • reported from 9 observing codes during 7.1452 days: 204, 595, 691, C95, G96, H01, H21, H36, I52
  • designation assigned to Mt. Lemmon Survey observation at 0636 UTC 7 Jan. 2020
  • last observed at 1005 UTC on 14 Jan. 2020 by Steward Obs. Mt. Lemmon Station
NotesNHATS target
Links  
2020 AB2   -     departed
Approximate diameter14 meters (H=26.941)
Closest Earth approach3.82 LD at 2233 UTC on 12 Jan. 2020
Inside ten LD of Earth7 to 18 Jan. 2020
Data based onJPL SSD orbit solution #4 downloaded from JPL on 13 Jan. 2020 UTC
based on 27 observations spanning 7 days
Optical observation  
  • reported from 5 observing codes during 7.4524 days: G96, H01, I52, J95, L01
  • designation assigned to Mt. Lemmon Survey observation at 0838 UTC 5 Jan. 2020
  • last observed at 1930 UTC on 12 Jan. 2020 by Great Shefford Obs.
NotesNHATS target
Links  
2020 AZ1   -   outbound
Approximate diameter16 meters (H=26.6)
Closest Earth approach8.23 LD at 0057 UTC on 16 Jan. 2020
Inside ten LD of Earth9 to 22 Jan. 2020
Data based onJPL SSD orbit solution #4 downloaded from JPL on 18 Jan. 2020 UTC
based on 30 observations spanning 13 days
Optical observation  
  • reported from 6 observing codes during 13.0961 days: 474, 807, G96, I52, K63, L01
  • designation assigned to Mt. Lemmon Survey observation at 1003 UTC 4 Jan. 2020
  • last observed at 1221 UTC on 17 Jan. 2020 by Mt. John Obs.
NotesNHATS target
Links  
2020 AY1   -     departed
Approximate diameter32 meters (H=25.1)
Closest Earth approach8.24 LD at 0053 UTC on 1 Jan. 2020
Inside ten LD of Earth27 Dec. until 5 Jan. 2020
Data based onJPL SSD orbit solution #9 downloaded from JPL on 20 Jan. 2020 UTC
based on 102 observations spanning 14 days
Optical observation  
  • reported from 24 observing codes during 13.9924 days: 104, 203, 204, 246, 291, 587, 595, 695, 703, B49, C47, C77, G96, H01, H36, I52, I93, J04, J95, K38, K63, K88, L01, Z99
  • designation assigned to Catalina Sky Survey observation at 0547 UTC 5 Jan. 2020
  • last observed at 0536 UTC on 19 Jan. 2020 by the Mt. Lemmon Survey
Notesrisk, NHATS target
Links  
2020 AT1   -     departed
Approximate diameter11 meters (H=27.528)
Closest Earth approach2.47 LD at 1155 UTC on 9 Jan. 2020
Inside ten LD of Earth2 to 16 Jan. 2020
Data based onJPL SSD orbit solution #4 downloaded from JPL on 8 Jan. 2020 UTC
based on 28 observations spanning 2 days
Optical observation  
  • reported from 9 observing codes during 1.9260 days: 204, G96, H01, I52, I93, J95, K63, K88, L01
  • designation assigned to Mt. Lemmon Survey observation at 0233 UTC 5 Jan. 2020
  • last observed at 0046 UTC on 7 Jan. 2020 by Great Shefford Obs.
NotesNHATS target
Links  
2020 AE1   -     departed
Approximate diameter11 meters (H=27.399)
Closest Earth approach6.55 LD at 1349 UTC on 13 Jan. 2020 - Note: JPL reports an approach uncertainty of +/- 1.2833 hours
Inside ten LD of Earth5 to 21 Jan. 2020
Data based onJPL SSD orbit solution #1 downloaded from JPL on 5 Jan. 2020 UTC
based on 19 observations
Optical observation  
  • reported from 5 observing codes during 17.198 hours: 033, G96, H01, I52, L01
  • designation assigned to Mt. Lemmon Survey observation at 0405 UTC 4 Jan. 2020
  • last observed at 2117 UTC on 4 Jan. 2020 by Schwarzschild Obs.
NotesNHATS target
Links  
2020 AD1   -   outbound
Approximate diameter19 meters (H=26.3)
Closest Earth approach9.08 LD at 2114 UTC on 17 Jan. 2020
Inside ten LD of Earth13 to 22 Jan. 2020
Data based onJPL SSD orbit solution #8 downloaded from JPL on 18 Jan. 2020 UTC
based on 46 observations spanning 2019-2020
Optical observation  
  • reported from 10 observing codes during 20.5431 days: 033, 104, 204, 291, 595, F51, G96, H01, I52, J95
  • first observed at 1257 UTC on 28 Dec. 2019 by Pan-STARRS 1
  • designation assigned to Mt. Lemmon Survey observation at 0530 UTC 4 Jan. 2020
  • last observed at 0200 UTC on 18 Jan. 2020 by Great Shefford Obs.
NotesNHATS target
Links  
2020 AC1   -     departed
Approximate diameter7 meters (H=28.4)
Closest Earth approach2.08 LD at 2249 UTC on 2 Jan. 2020
Inside Earth SOI2 to 3 Jan. 2020
Inside ten LD of Earth26 Dec. until 9 Jan. 2020
Closest Moon approach2.85 LD at 1550 UTC on 3 Jan. 2020
Data based onJPL SSD orbit solution #5 downloaded from JPL on 14 Jan. 2020 UTC
based on 43 observations spanning 10 days
Optical observation  
  • reported from 9 observing codes during 9.8722 days: 033, 104, 204, 291, 595, 691, 695, I41, L01
  • designation assigned to Zwicky Transient Facility observation at 0625 UTC 4 Jan. 2020
  • last observed at 0321 UTC on 14 Jan. 2020 by Spacewatch via Kitt Peak Natl. Obs.
Notesrisk, NHATS target
Links  
2020 AW   -     departed
Approximate diameter6 meters (H=28.684)
Closest Earth approach4.76 LD at 0147 UTC on 6 Jan. 2020
Inside ten LD of Earth27 Dec. until 15 Jan. 2020
Data based onJPL SSD orbit solution #2 downloaded from JPL on 6 Jan. 2020 UTC
based on 20 observations spanning 3 days
Optical observation  
  • reported from 6 observing codes during 2.8690 days: 204, 291, G96, I52, J95, L01
  • designation assigned to Mt. Lemmon Survey observation at 0826 UTC 3 Jan. 2020
  • last observed at 0517 UTC on 6 Jan. 2020 by the Spacewatch 1.8m telescope
Notesrisk, NHATS target
Links  
2020 AO   -     departed
Approximate diameter46 meters (H=24.347)
Closest Earth approach9.31 LD at 1812 UTC on 14 Jan. 2020 - Note: JPL reports an approach uncertainty of +/- 3 minutes
Inside ten LD of Earth13 to 15 Jan. 2020
Data based onJPL SSD orbit solution #4 downloaded from JPL on 8 Jan. 2020 UTC
based on 42 observations spanning 7 days
Optical observation  
  • reported from 6 observing codes during 6.8053 days: 033, F51, H21, I52, L01, V39
  • designation assigned to Pan-STARRS 1 observation at 1210 UTC 1 Jan. 2020
  • last observed at 0730 UTC on 8 Jan. 2020 by LCO McDonald Obs. B
Links  
2020 AB   -     departed
Approximate diameter21 meters (H=26.)
Closest Earth approach6.69 LD at 1406 UTC on 29 Dec. 2019
Inside ten LD of Earth24 Dec. until 3 Jan. 2020
Data based onJPL SSD orbit solution #10 downloaded from JPL on 21 Jan. 2020 UTC
based on 79 observations spanning 2019-2020 including radar
Optical observation  
  • reported from 11 observing codes during 20.0819 days: 104, 160, 198, 246, A17, C77, F51, F52, I41, I52, K61
  • first observed at 1041 UTC on 30 Dec. 2019 by Pan-STARRS 2
  • designation assigned to Zwicky Transient Facility observation at 0604 UTC 1 Jan. 2020
  • last observed at 1239 UTC on 19 Jan. 2020 by Pan-STARRS 1
Radar observation  
  • observed 2 times from one location during 0.05 days
  • first observed at 0548 UTC on 3 Jan. 2020 by Arecibo
  • last observed at 0700 UTC on 3 Jan. 2020 by Arecibo
Links  
2019 YF4   -   outbound
Approximate diameter13 meters (H=27.)
Closest Earth approach3.71 LD at 0924 UTC on 10 Jan. 2020
Inside ten LD of Earth27 Dec. until 25 Jan. 2020
Data based onJPL SSD orbit solution #9 downloaded from JPL on 18 Jan. 2020 UTC
based on 77 observations spanning 2019-2020 including radar
Optical observation  
  • reported from 17 observing codes during 20.0325 days: 104, 203, 204, 246, 291, 595, 691, B49, C77, F51, H21, I52, K61, K63, L01, Z80, Z99
  • designation assigned to Pan-STARRS 1 observation at 0929 UTC 29 Dec. 2019
  • last observed at 1016 UTC on 18 Jan. 2020 by the Spacewatch 0.9m telescope
Radar observation  
  • observed once from one location
  • observed at 0225 UTC on 3 Jan. 2020 by Arecibo
NotesNHATS target
Links  
2019 YA4   -     departed
Approximate diameter78 meters (H=23.2)
Closest Earth approach9.20 LD at 0016 UTC on 24 Dec. 2019
Inside ten LD of Earth22 to 25 Dec. 2019
Data based onJPL SSD orbit solution #9 downloaded from JPL on 19 Jan. 2020 UTC
based on 91 observations spanning 2019-2020
Optical observation  
  • reported from 16 observing codes during 19.8112 days: 104, 160, 198, 204, 246, 474, 595, 711, A17, I52, K30, K87, K88, L01, L04, T05
  • designation assigned to ATLAS Haleakala observation at 0831 UTC 29 Dec. 2019
  • last observed at 0400 UTC on 18 Jan. 2020 by McDonald Obs.
Links  
2019 YP3   -     departed
Approximate diameter25 meters (H=25.7)
Closest Earth approach2.25 LD at 2212 UTC on 23 Dec. 2019
Inside Earth SOI23 to 24 Dec. 2019
Inside ten LD of Earth19 to 28 Dec. 2019
Closest Moon approach1.37 LD at 1908 UTC on 23 Dec. 2019
Data based onJPL SSD orbit solution #10 downloaded from JPL on 19 Jan. 2020 UTC
based on 57 observations spanning 2019-2020
Optical observation  
  • reported from 9 observing codes during 22.8113 days: 033, 291, 595, 691, 695, F51, L01, T12, V06
  • designation assigned to Pan-STARRS 1 observation at 1248 UTC 27 Dec. 2019
  • last observed at 0816 UTC on 19 Jan. 2020 by the Spacewatch 1.8m telescope
Notesrisk
Links  
2019 YD3   -   outbound
Approximate diameter21 meters (H=26.)
Closest Earth approach6.85 LD at 0434 UTC on 16 Jan. 2020
Inside ten LD of Earth9 to 22 Jan. 2020
Data based onJPL SSD orbit solution #13 downloaded from JPL on 22 Jan. 2020 UTC
based on 77 observations spanning 2019-2020
Optical observation  
  • reported from 11 observing codes during 28.1489 days: 160, 246, 595, 734, 807, F51, F52, H21, I52, L01, V39
  • designation assigned to Pan-STARRS 1 observation at 1005 UTC 24 Dec. 2019
  • last observed at 1340 UTC on 21 Jan. 2020 by Pan-STARRS 2
NotesNHATS target
Links  
2019 YW2   -     departed
Approximate diameter54 meters (H=24.)
Closest Earth approach2.70 LD at 1237 UTC on 20 Dec. 2019
Inside ten LD of Earth16 to 24 Dec. 2019
Data based onJPL SSD orbit solution #15 downloaded from JPL on 21 Jan. 2020 UTC
based on 130 observations spanning 2019-2020
Optical observation  
  • reported from 25 observing codes during 23.7860 days: 104, 130, 160, 203, 204, 246, 291, 595, 691, 695, C77, C82, G40, G96, I52, J04, J43, K63, L01, T08, T12, W34, X02, X31, Z80
  • designation assigned to ATLAS Mauna Loa observation at 1219 UTC 24 Dec. 2019
  • last observed at 0711 UTC on 17 Jan. 2020 by the Spacewatch 0.9m telescope
Notesrisk
Links  
2019 YX1   -     departed
Approximate diameter45 meters (H=24.4)
Closest Earth approach4.06 LD at 1620 UTC on 24 Dec. 2019
Inside ten LD of Earth19 to 29 Dec. 2019
Data based onJPL SSD orbit solution #9 downloaded from JPL on 22 Jan. 2020 UTC
based on 56 observations spanning 2019-2020 including radar
Optical observation  
  • reported from 13 observing codes during 30.9561 days: 033, 104, 204, 291, 309, C95, H06, J69, J95, L39, T08, T12, Z80
  • designation assigned to ATLAS Mauna Loa observation at 0748 UTC 21 Dec. 2019
  • last observed at 0645 UTC on 21 Jan. 2020 by Marco Micheli via Cerro Paranal
Radar observation  
  • observed 5 times from one location during 0.0375 days
  • first observed at 1143 UTC on 26 Dec. 2019 by Arecibo
  • last observed at 1237 UTC on 26 Dec. 2019 by Arecibo
Links  
2019 YV1   -     departed
Approximate diameter32 meters (H=25.1)
Closest Earth approach7.87 LD at 0350 UTC on 19 Dec. 2019
Inside ten LD of Earth14 to 23 Dec. 2019
Data based onJPL SSD orbit solution #10 downloaded from JPL on 14 Jan. 2020 UTC
based on 83 observations spanning 2019-2020
Optical observation  
  • reported from 15 observing codes during 23.9991 days: 033, 104, 291, 695, 711, B49, G96, H21, H36, I52, J04, J95, K63, L01, T12
  • designation assigned to Mt. Lemmon Survey observation at 0240 UTC 21 Dec. 2019
  • last observed at 0238 UTC on 14 Jan. 2020 by Spacewatch via Kitt Peak Natl. Obs.
Notesrisk, NHATS target
Links  
2019 YA1   -     departed
Approximate diameter28 meters (H=25.4)
Closest Earth approach8.81 LD at 0313 UTC on 22 Dec. 2019
Inside ten LD of Earth18 to 25 Dec. 2019
Data based onJPL SSD orbit solution #15 downloaded from JPL on 22 Jan. 2020 UTC
based on 87 observations spanning 2019-2020
Optical observation  
  • reported from 13 observing codes during 33.1738 days: 246, 291, 691, 703, 711, 734, 807, F51, F52, G96, H21, I52, T08
  • designation assigned to ATLAS Mauna Loa observation at 0754 UTC 19 Dec. 2019
  • last observed at 1204 UTC on 21 Jan. 2020 by Pan-STARRS 2
NotesNHATS target
Links  
2019 YL   -     departed
Approximate diameter23 meters (H=25.8)
Closest Earth approach4.34 LD at 1551 UTC on 13 Dec. 2019
Inside ten LD of Earth6 to 21 Dec. 2019
Data based onJPL SSD orbit solution #9 downloaded from JPL on 14 Jan. 2020 UTC
based on 55 observations spanning 2019-2020
Optical observation  
  • reported from 8 observing codes during 29.7526 days: 291, 691, 703, F51, G96, I52, T05, T08
  • first observed at 1558 UTC on 15 Dec. 2019 by Pan-STARRS 1
  • designation assigned to Catalina Sky Survey observation at 0903 UTC 19 Dec. 2019
  • last observed at 1002 UTC on 14 Jan. 2020 by the Spacewatch 0.9m telescope
NotesNHATS target
Links  
2019 WG2   -     departed intruder
Approximate diameter35 meters (H=24.9)
Closest Earth approach0.47 LD at 0843 UTC on 23 Nov. 2019
Inside Earth-Moon system0222-1504 UTC on 23 Nov. 2019
Inside Earth SOI22 to 24 Nov. 2019
Inside ten LD of Earth20 to 26 Nov. 2019
Closest Moon approach1.23 LD at 0533 UTC on 23 Nov. 2019
Data based onJPL SSD orbit solution #7 downloaded from JPL on 17 Jan. 2020 UTC
based on 44 observations spanning 2019-2020
Optical observation  
  • reported from 10 observing codes during 52.6087 days: 309, 474, 807, F51, G40, J04, Q62, T08, T12, X31
  • designation assigned to ATLAS Mauna Loa observation at 1152 UTC 24 Nov. 2019
  • last observed at 0229 UTC on 16 Jan. 2020 by Marco Micheli via Cerro Paranal
Notesrisk
Links  
2018 BM5   -     distant
Approximate diameter12 meters (H=27.3)
Closest Earth approach
Distance from Earth17.6 - 18.6 LD min-max during the observation period
Data based onJPL SSD orbit solution #5 downloaded from JPL on 19 Jan. 2020 UTC
based on 67 observations spanning 2018-2020 including radar
Optical observation  
  • reported from one observing code during 17.278 hours: J04
  • first observed at 0539 UTC on 17 Jan. 2020 by ESA Optical Ground Station
  • last observed at 2256 UTC on 17 Jan. 2020 by ESA Optical Ground Station
Notesprevious passage Jan. 2018 at 4.83 LD
Links  
2016 BC14   -     distant
Approximate diameter224 meters (H=20.9)
Closest Earth approach
Distance from Earth79.3 - 87.0 LD min-max during the observation period
Data based onJPL SSD orbit solution #47 downloaded from JPL on 18 Jan. 2020 UTC
based on 252 observations spanning 2016-2020
Optical observation  
  • reported from 2 observing codes during 15.0232 days: 291, I52
  • first observed at 0144 UTC on 3 Jan. 2020 by the Spacewatch 1.8m telescope
  • last observed at 0217 UTC on 18 Jan. 2020 by Steward Obs. Mt. Lemmon Station
NotesNHATS target
previous passage March 2016 at 9.79 LD and observation April 2019
Links  
2013 BA74   -   approaching
Approximate diameter27 meters (H=25.5)
Closest Earth approach3.69 LD at 0345 UTC on 4 Feb. 2020
Inside ten LD of Earth29 Jan. until 9 Feb. 2020
Data based onJPL SSD orbit solution #13 downloaded from JPL on 21 Jan. 2020 UTC
based on 94 observations spanning 2013-2020
Optical observation  
  • reported from 6 observing codes during 2.0391 days: 033, 734, G96, H36, I52, L01
  • first observed at 0527 UTC on 19 Jan. 2020 by the Mt. Lemmon Survey
  • last observed at 0623 UTC on 21 Jan. 2020 by Farpoint Obs.
Notesprevious passage Feb. 2013 at 4.47 LD
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.