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Legend - object IDs plus links to more info

Data compiled at 2154 UTC on 16 July 2019 for 33 known objects during a period of seven days from 13 to 19 July 2019. Orange is for objects with a new JPL orbit solution (usually from new observation).

Chart
ID

Full ID
Period
Closest
Passage
Uncertainty

Status
EN2019 EN293.68 LD  departed
GT12019 GT144.27 LD  departed
HM2019 HM39.84 LD  departed
KB6768347 2001 KB67142.3 LD  distant
LC72019 LC767.07 LD  departed
MB42019 MB45.91 LD  departed intruder
MF182014 MF1824.88 LD  departed
MN22019 MN241.55 LD  departed
MQ22019 MQ287.81 LD  departed
MT2019 MT14.43 LD  departed
MT22019 MT211.87 LD  departed
MV182014 MV1847.8 LD  distant
MW12019 MW17.82 LDoutbound
NK12019 NK119.48 LD  departed intruder
NL12019 NL115.07 LD  departed
NL42019 NL431.72 LD  departed
NM42019 NM410.34 LD  departed
NM52019 NM55.12 LD  departed
NN32019 NN34.62 LD  departed intruder
NN42019 NN410.1 LD+/- 13 minutesapproaching
NO22019 NO219.23 LD  departed
NO562016 NO5611.87 LD  departed
NP12019 NP116.39 LD  departed
NP52019 NP56.44 LDoutbound
NQ2019 NQ22.02 LD  departed
NW22019 NW220.46 LD  departed
NX12019 NX113.72 LD  departed
NX52019 NX53.0 LD+/- 21 minutesoutbound
NY65441987 2010 NY6552.76 LD  departed
OF2016 OF16.6 LD  distant
UY1362012 UY136362.89 LD+/- 3 minutes  departed
XC3522015 XC35216.2 LD  distant
YM22018 YM2103.0 LD  distant
DateTfc.Time
13 July '19Rept. Line
14 July '19Rept. Line
15 July '19Rept. Line
16 July '19Rept. Line
17 July '19Rept. Line
18 July '19 Line
19 July '19 Line

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

2019 NX5   -   outbound
Approximate diameter5 meters (H=29.282)
Closest Earth approach2.62 LD at 1301 UTC on 9 July 2019 - Note: JPL reports an approach uncertainty of +/- 21 minutes
Inside ten LD of Earth13 June until 4 Aug. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 11 July 2019 UTC
based on 20 observations spanning one day
Optical observation  
  • reported from 4 observing codes during 23.755 hours: H01, I41, I52, K88
  • first observed at 0840 UTC on 10 July 2019 by the Zwicky Transient Facility
  • designation assigned to Zwicky Transient Facility observation at 0844 UTC 10 July 2019
  • last observed at 0825 UTC on 11 July 2019 by Magdalena Ridge Obs.
Notesrisk, NHATS target
Links  
2019 NP5   -   outbound
Approximate diameter10 meters (H=27.596)
Closest Earth approach5.56 LD at 2355 UTC on 9 July 2019
Inside ten LD of Earth2 to 17 July 2019
Data based onJPL SSD orbit solution #4 downloaded from JPL on 15 July 2019 UTC
based on 22 observations spanning 8 days
Optical observation  
Notesrisk, NHATS target
Links  
2019 NM5   -     departed
Approximate diameter13 meters (H=27.11)
Closest Earth approach2.13 LD at 1500 UTC on 10 July 2019
Inside Earth SOI10 to 11 July 2019
Inside ten LD of Earth5 to 15 July 2019
Closest Moon approach2.39 LD at 0647 UTC on 10 July 2019
Data based onJPL SSD orbit solution #3 downloaded from JPL on 12 July 2019 UTC
based on 19 observations spanning 12 days
Optical observation  
  • reported from 4 observing codes during 11.6738 days: F51, I41, J69, J95
  • first observed at 0901 UTC on 30 June 2019 by Pan-STARRS 1
  • designation assigned to Pan-STARRS 1 observation at 0732 UTC 6 July 2019
  • last observed at 0111 UTC on 12 July 2019 by Great Shefford Obs.
Links  
2019 NN4   -   approaching
Approximate diameter26 meters (H=25.547)
Closest Earth approach6.60 LD at 0126 UTC on 29 July 2019 - Note: JPL reports an approach uncertainty of +/- 13 minutes
Inside ten LD of Earth20 July until 6 Aug. 2019
Data based onJPL SSD orbit solution #2 downloaded from JPL on 10 July 2019 UTC
based on 15 observations spanning 9 days
Optical observation  
  • reported from 5 observing codes during 8.8475 days: 568, F51, F52, H21, I52
  • first observed at 0818 UTC on 29 June 2019 by Pan-STARRS 2
  • designation assigned to Pan-STARRS 1 observation at 0747 UTC 5 July 2019
  • last observed at 0439 UTC on 8 July 2019 by Steward Obs. Mt. Lemmon Station
NotesNHATS target
Links  
2019 NM4   -     departed
Approximate diameter56 meters (H=23.904)
Closest Earth approach8.97 LD at 0206 UTC on 10 July 2019
Inside ten LD of Earth7 to 12 July 2019
Data based onJPL SSD orbit solution #2 downloaded from JPL on 10 July 2019 UTC
based on 42 observations spanning 3 days
Optical observation  
  • reported from 6 observing codes during 3.0972 days: 474, I48, Q62, X31, X74, Y00
  • designation assigned to Campo dos Amarais Obs. observation at 0315 UTC 6 July 2019
  • last observed at 0535 UTC on 9 July 2019 by Campo dos Amarais Obs.
Links  
2019 NL4   -     departed
Approximate diameter21 meters (H=26.064)
Closest Earth approach6.19 LD at 1525 UTC on 2 July 2019
Inside ten LD of Earth30 June until 5 July 2019
Data based onJPL SSD orbit solution #3 downloaded from JPL on 11 July 2019 UTC
based on 17 observations spanning 6 days
Optical observation  
  • reported from 4 observing codes during 5.7993 days: 691, F51, F52, I52
  • first observed at 1338 UTC on 4 July 2019 by Pan-STARRS 1
  • designation assigned to Pan-STARRS 1 observation at 1218 UTC 7 July 2019
  • last observed at 0849 UTC on 10 July 2019 by the Spacewatch 0.9m telescope
Notesrisk
Links  
2019 NN3   -     departed intruder
Approximate diameter37 meters (H=24.784)
Closest Earth approach0.83 LD at 1628 UTC on 10 July 2019
Inside Earth-Moon system0944-2311 UTC on 10 July 2019
Inside Earth SOI9 to 11 July 2019
Inside ten LD of Earth5 to 15 July 2019
Closest Moon approach0.86 LD at 0812 UTC on 10 July 2019
Inside one LD of Moon0159-1426 UTC on 10 July 2019
Data based onJPL SSD orbit solution #4 downloaded from JPL on 12 July 2019 UTC
based on 105 observations spanning 40 days
Optical observation  
  • reported from 15 observing codes during 39.7888 days: 104, E23, F51, F52, G40, G96, H01, H06, I52, I93, J69, K88, T08, Z43, Z80
  • first observed at 0935 UTC on 31 May 2019 by Pan-STARRS 1
  • designation assigned to Mt. Lemmon Survey observation at 0450 UTC 9 July 2019
  • last observed at 0431 UTC on 10 July 2019 by Steward Obs. Mt. Lemmon Station
Links  
2019 NW2   -     departed
Approximate diameter17 meters (H=26.534)
Closest Earth approach5.72 LD at 1957 UTC on 2 July 2019
Inside ten LD of Earth28 June until 7 July 2019
Data based onJPL SSD orbit solution #3 downloaded from JPL on 15 July 2019 UTC
based on 22 observations spanning 12 days
Optical observation  
  • reported from 6 observing codes during 12.2981 days: 291, F51, I41, J04, T12, T14
  • first observed at 0709 UTC on 2 July 2019 by the Zwicky Transient Facility
  • designation assigned to Zwicky Transient Facility observation at 0725 UTC 2 July 2019
  • last observed at 1418 UTC on 14 July 2019 by UH/Tholen NEO Follow-Up CFH Telescope
Notesrisk
Links  
2019 NO2   -     departed
Approximate diameter8 meters (H=28.253)
Closest Earth approach1.68 LD at 0839 UTC on 3 July 2019
Inside Earth SOI2 to 4 July 2019
Inside ten LD of Earth28 June until 8 July 2019
Closest Moon approach2.43 LD at 0334 UTC on 3 July 2019
Data based onJPL SSD orbit solution #2 downloaded from JPL on 9 July 2019 UTC
based on 23 observations spanning 4 days
Optical observation  
  • reported from 7 observing codes during 4.0403 days: 291, F52, G96, H01, I52, J04, T12
  • designation assigned to Mt. Lemmon Survey observation at 0823 UTC 5 July 2019
  • last observed at 0921 UTC on 9 July 2019 by the Spacewatch 1.8m telescope
Notesrisk
Links  
2019 NX1   -     departed
Approximate diameter10 meters (H=27.667)
Closest Earth approach1.58 LD at 2314 UTC on 5 July 2019
Inside Earth SOI5 to 6 July 2019
Inside ten LD of Earth30 June until 11 July 2019
Closest Moon approach2.09 LD at 2022 UTC on 5 July 2019
Data based onJPL SSD orbit solution #2 downloaded from JPL on 9 July 2019 UTC
based on 60 observations spanning 2 days
Optical observation  
  • reported from 12 observing codes during 1.8337 days: 204, 246, 587, G96, H01, I52, K63, K88, L01, L04, V01, Z80
  • designation assigned to Mt. Lemmon Survey observation at 0542 UTC 4 July 2019
  • last observed at 0143 UTC on 6 July 2019 by Northolt Branch Obs.
Links  
2019 NP1   -     departed
Approximate diameter33 meters (H=25.064)
Closest Earth approach6.61 LD at 1400 UTC on 7 July 2019
Inside ten LD of Earth4 to 10 July 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 5 July 2019 UTC
based on 56 observations spanning 2 days
Optical observation  
  • reported from 11 observing codes during 1.7226 days: 033, 204, 587, F52, H01, H21, I52, J69, J95, K88, L01
  • designation assigned to Pan-STARRS 2 observation at 1050 UTC 3 July 2019
  • last observed at 0411 UTC on 5 July 2019 by Steward Obs. Mt. Lemmon Station
Links  
2019 NL1   -     departed
Approximate diameter10 meters (H=27.573)
Closest Earth approach5.76 LD at 1301 UTC on 3 July 2019
Inside ten LD of Earth28 June until 9 July 2019
Data based onJPL SSD orbit solution #2 downloaded from JPL on 8 July 2019 UTC
based on 21 observations spanning 4 days
Optical observation  
  • reported from 5 observing codes during 4.0122 days: H01, I41, I52, J04, V06
  • first observed at 0923 UTC on 4 July 2019 by the Zwicky Transient Facility
  • designation assigned to Zwicky Transient Facility observation at 0935 UTC 4 July 2019
  • last observed at 0941 UTC on 8 July 2019 by the Catalina Sky Survey Kuiper Telescope
Links  
2019 NK1   -     departed intruder
Approximate diameter3 meters (H=30.087)
Closest Earth approach0.69 LD at 0948 UTC on 2 July 2019
Inside Earth-Moon system0020-1915 UTC on 2 July 2019
Inside Earth SOI1 to 3 July 2019
Inside ten LD of Earth26 June until 7 July 2019
Closest Moon approach1.27 LD at 0132 UTC on 2 July 2019
Data based onJPL SSD orbit solution #2 downloaded from JPL on 8 July 2019 UTC
based on 34 observations spanning 4 days
Optical observation  
  • reported from 6 observing codes during 4.0984 days: 291, G96, H01, I52, J04, T12
  • designation assigned to Mt. Lemmon Survey observation at 0748 UTC 4 July 2019
  • last observed at 1010 UTC on 8 July 2019 by the Spacewatch 1.8m telescope
Notesrisk, NHATS target
Links  
2019 NQ   -     departed
Approximate diameter16 meters (H=26.569)
Closest Earth approach6.72 LD at 0033 UTC on 1 July 2019
Inside ten LD of Earth26 June until 5 July 2019
Data based onJPL SSD orbit solution #5 downloaded from JPL on 16 July 2019 UTC
based on 50 observations spanning 12 days
Optical observation  
  • reported from 8 observing codes during 12.0771 days: 104, 246, H21, I41, I52, J95, K63, K88
  • designation assigned to Zwicky Transient Facility observation at 0705 UTC 2 July 2019
  • last observed at 0856 UTC on 14 July 2019 by ARO Westfield
Links  
2019 MB4   -     departed intruder
Approximate diameter21 meters (H=26.051)
Closest Earth approach0.82 LD at 0719 UTC on 9 July 2019
Inside Earth-Moon system2241 on 8 July until 1556 UTC on 9 July 2019
Inside Earth SOI7 to 10 July 2019
Inside ten LD of Earth2 to 15 July 2019
Closest Moon approach0.97 LD at 1742 UTC on 8 July 2019
Inside one LD of Moon1354-2129 UTC on 8 July 2019
Data based onJPL SSD orbit solution #3 downloaded from JPL on 11 July 2019 UTC
based on 45 observations spanning 11 days
Optical observation  
  • reported from 9 observing codes during 11.1765 days: 568, F52, I52, I93, J69, K88, L01, T08, Z43
  • designation assigned to Pan-STARRS 2 observation at 0642 UTC 29 June 2019
  • last observed at 1056 UTC on 10 July 2019 by Steward Obs. Mt. Lemmon Station
Links  
2019 MT2   -     departed
Approximate diameter18 meters (H=26.433)
Closest Earth approach4.35 LD at 1314 UTC on 8 July 2019
Inside ten LD of Earth4 to 12 July 2019
Data based onJPL SSD orbit solution #6 downloaded from JPL on 7 July 2019 UTC
based on 41 observations spanning 7 days
Optical observation  
  • reported from 6 observing codes during 6.8413 days: 291, F51, I52, J04, L01, T12
  • designation assigned to Pan-STARRS 1 observation at 0945 UTC 30 June 2019
  • last observed at 0556 UTC on 7 July 2019 by UH/Tholen NEO Follow-Up 2.24m Telescope
Notesrisk
Links  
2019 MQ2   -     departed
Approximate diameter48 meters (H=24.247)
Closest Earth approach4.15 LD at 1345 UTC on 28 June 2019
Inside ten LD of Earth27 to 30 June 2019
Data based onJPL SSD orbit solution #8 downloaded from JPL on 15 July 2019 UTC
based on 102 observations spanning 5 days
Optical observation  
  • reported from 16 observing codes during 4.8132 days: 246, 585, 595, 850, A17, C95, G40, I41, I52, J69, J95, K63, K88, L01, T08, Z80
  • designation assigned to ATLAS Mauna Loa observation at 1055 UTC 30 June 2019
  • last observed at 0626 UTC on 5 July 2019 by the Zwicky Transient Facility
Links  
2019 MN2   -     departed
Approximate diameter77 meters (H=23.223)
Closest Earth approach3.15 LD at 0136 UTC on 24 June 2019
Inside ten LD of Earth19 to 28 June 2019
Data based onJPL SSD orbit solution #6 downloaded from JPL on 10 July 2019 UTC
based on 37 observations spanning 8 days
Optical observation  
  • reported from 5 observing codes during 8.0396 days: 474, T05, T08, T12, Y28
  • designation assigned to ATLAS Mauna Loa observation at 1400 UTC 29 June 2019
  • last observed at 1457 UTC on 7 July 2019 by UH/Tholen NEO Follow-Up 2.24m Telescope
Links  
2019 MW1   -   outbound
Approximate diameter43 meters (H=24.505)
Closest Earth approach7.82 LD at 0410 UTC on 13 July 2019
Inside ten LD of Earth9 to 16 July 2019
Data based onJPL SSD orbit solution #3 downloaded from JPL on 4 July 2019 UTC
based on 25 observations spanning 36 days
Optical observation  
  • reported from 6 observing codes during 35.7673 days: 104, 691, 734, 807, F51, F52
  • first observed at 0845 UTC on 28 May 2019 by Pan-STARRS 1
  • designation assigned to Pan-STARRS 1 observation at 0717 UTC 28 June 2019
  • last observed at 0310 UTC on 3 July 2019 by Robert Holmes via Cerro Tololo Inter-American Obs.
Links  
2019 MT   -     departed
Approximate diameter38 meters (H=24.768)
Closest Earth approach8.90 LD at 0843 UTC on 1 July 2019
Inside ten LD of Earth26 June until 6 July 2019
Data based onJPL SSD orbit solution #12 downloaded from JPL on 11 July 2019 UTC
based on 147 observations spanning 11 days
Optical observation  
  • reported from 27 observing codes during 10.9940 days: 104, 106, 157, 160, 204, 246, 595, 658, 691, 695, 703, C95, G34, G58, H21, I52, I93, J69, J95, K38, K63, K87, K88, L01, L04, W34, Z84
  • designation assigned to Catalina Sky Survey observation at 0628 UTC 24 June 2019
  • last observed at 0620 UTC on 5 July 2019 by Steward Obs. Mt. Lemmon Station
NotesNHATS target
Links  
2019 LC7   -     departed
Approximate diameter22 meters (H=25.948)
Closest Earth approach7.07 LD at 1828 UTC on 11 June 2019
Inside ten LD of Earth8 to 15 June 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 5 July 2019 UTC
based on 11 observations spanning 17 days
Optical observation  
  • reported from 3 observing codes during 16.9900 days: 568, C65, F51
  • first observed at 1343 UTC on 14 June 2019 by Pan-STARRS 1
  • designation assigned to Pan-STARRS 1 observation at 1322 UTC 15 June 2019
  • last observed at 1329 UTC on 1 July 2019 by Marco Micheli via Mauna Kea
Links  
2019 HM   -     departed
Approximate diameter23 meters (H=25.84)
Closest Earth approach8.33 LD at 2033 UTC on 13 April 2019
Inside ten LD of Earth5 to 22 April 2019
Data based onJPL SSD orbit solution #3 downloaded from JPL on 7 July 2019 UTC
based on 33 observations spanning 75 days
Optical observation  
  • reported from 4 observing codes during 75.2867 days: G96, H01, I52, T12
  • designation assigned to Mt. Lemmon Survey observation at 0307 UTC 22 April 2019
  • last observed at 1000 UTC on 6 July 2019 by UH/Tholen NEO Follow-Up 2.24m Telescope
NotesNHATS target
Links  
2019 GT1   -     departed
Approximate diameter34 meters (H=24.977)
Closest Earth approach6.09 LD at 2338 UTC on 17 May 2019
Inside ten LD of Earth8 to 26 May 2019
Data based onJPL SSD orbit solution #17 downloaded from JPL on 16 July 2019 UTC
based on 60 observations spanning 107 days including radar
Optical observation  
  • reported from 8 observing codes during 106.9702 days: 291, 691, 807, F51, G96, H21, I52, V06
  • first observed at 0805 UTC on 28 March 2019 by Pan-STARRS 1
  • designation assigned to Pan-STARRS 1 observation at 0813 UTC 4 April 2019
  • last observed at 0722 UTC on 13 July 2019 by ARO Westfield
Radar observation  
  • observed once from one location
  • observed at 2105 UTC on 9 May 2019 by Arecibo
NotesNHATS target
Links  
2019 EN   -     departed
Approximate diameter196 meters (H=21.191)
Closest Earth approach9.69 LD at 0126 UTC on 27 March 2019
Inside ten LD of Earth26 to 27 March 2019
Data based onJPL SSD orbit solution #14 downloaded from JPL on 15 July 2019 UTC (dated 13 July 2019 local)
based on 127 observations spanning 84 days including radar
Optical observation  
  • reported from 21 observing codes during 71.5935 days: 204, 291, 474, 595, 691, 703, C95, C97, E23, F51, I19, I52, K91, L01, L29, T08, W85, W86, W87, W88, X31
  • first observed at 1254 UTC on 10 Jan. 2019 by Pan-STARRS 1
  • designation assigned to Catalina Sky Survey observation at 0651 UTC 2 March 2019
  • last observed at 0309 UTC on 23 March 2019 by Slooh.com Chile Obs. program code 12 via Slooh.com Chile Obs.
Radar observation  
  • observed 2 times from one location during 0.0271 days
  • first observed at 1438 UTC on 4 April 2019 by Arecibo
  • last observed at 1517 UTC on 4 April 2019 by Arecibo
Links  
2018 YM2   -     distant
Approximate diameter39 meters (H=24.7)
Closest Earth approach
Distance from Earth102.5 - 103.2 LD min-max during the observation period
Data based onJPL SSD orbit solution #6 downloaded from JPL on 16 July 2019 UTC
based on 81 observations spanning 2018-2019
Optical observation  
  • reported from 2 observing codes during 9.0883 days: T12, T14
  • first observed at 1136 UTC on 4 July 2019 by UH/Tholen NEO Follow-Up 2.24m Telescope
  • last observed at 1343 UTC on 13 July 2019 by UH/Tholen NEO Follow-Up CFH Telescope
Notesprevious passage Dec. 2018 at 6.40 LD
Links  
2016 OF   -     distant
Approximate diameter81 meters (H=23.1)
Closest Earth approach
Distance from Earth13.1 - 13.8 LD min-max during the observation period
Data based onJPL SSD orbit solution #15 downloaded from JPL on 11 July 2019 UTC
based on 81 observations spanning 2016-2019
Optical observation  
  • reported from 3 observing codes during 23.935 hours: 691, G96, I52
  • first observed at 0943 UTC on 9 July 2019 by the Spacewatch 0.9m telescope
  • last observed at 0939 UTC on 10 July 2019 by the Mt. Lemmon Survey
Notesprevious passage July 2016 at 8.99 LD and observation July 2019
Links  
2016 NO56   -     departed
Approximate diameter24 meters (H=25.731)
Closest Earth approach8.01 LD at 1352 UTC on 9 July 2019
Inside ten LD of Earth7 to 11 July 2019
Data based onJPL SSD orbit solution #3 downloaded from JPL on 6 July 2019 UTC
based on 53 observations spanning 2016-2019
Optical observation  
  • reported from 7 observing codes during 1.8894 days: 104, 711, F51, H01, I52, J04, L01
  • first observed at 0847 UTC on 4 July 2019 by Pan-STARRS 1
  • last observed at 0608 UTC on 6 July 2019 by McDonald Obs.
Notesprevious passage July 2016 at 1.91 LD
Links  
2015 XC352   -     distant
Approximate diameter25 meters (H=25.7)
Closest Earth approach
Distance from Earth12.3 - 12.5 LD min-max during the observation period
Data based onJPL SSD orbit solution #22 downloaded from JPL on 6 July 2019 UTC
based on 86 observations spanning 2015-2019 including radar
Optical observation  
  • reported from 2 observing codes during 23.318 hours: G96, I52
  • first observed at 1054 UTC on 4 July 2019 by the Mt. Lemmon Survey
  • last observed at 1013 UTC on 5 July 2019 by Steward Obs. Mt. Lemmon Station
NotesNHATS target
previous passage Dec. 2015 at 5.18 LD and observation Sept.-Nov. 2016
Links  
2014 MV18   -     distant
Approximate diameter62 meters (H=23.7)
Closest Earth approach
Distance from Earth38.2 - 39.1 LD min-max during the observation period
Data based onJPL SSD orbit solution #14 downloaded from JPL on 5 July 2019 UTC
based on 107 observations spanning 2014-2019
Optical observation  
  • reported from one observing code during 23.974 hours: J04
  • first observed at 2334 UTC on 3 July 2019 by ESA Optical Ground Station
  • last observed at 2332 UTC on 4 July 2019 by ESA Optical Ground Station
Notesprevious passage July 2009 at 4.81 LD (unobserved) and passage June 2014 at 7.17 LD
Links  
2014 MF18   -     departed
Approximate diameter21 meters (H=26.)
Closest Earth approach8.85 LD at 0945 UTC on 6 June 2019
Inside ten LD of Earth30 May until 13 June 2019
Data based onJPL SSD orbit solution #10 downloaded from JPL on 4 July 2019 UTC
based on 74 observations spanning 2014-2019
Optical observation  
  • reported from 2 observing codes during 10.2104 days: C51, T12
  • first observed at 0148 UTC on 23 June 2019 by WISE
  • last observed at 0651 UTC on 3 July 2019 by UH/Tholen NEO Follow-Up 2.24m Telescope
NotesNHATS target
previous passage June 2014 at 6.91 LD
Links  
2012 UY136   -     departed
Approximate diameter16 meters (H=26.6)
Closest Earth approach8.35 LD at 2316 UTC on 19 Oct. 2012 - Note: JPL reports an approach uncertainty of +/- 3 minutes
Inside ten LD of Earth16 to 23 Oct. 2012
Data based onJPL SSD orbit solution #6 downloaded from JPL on 16 July 2019 UTC
based on 24 observations spanning one day
Optical observation  
  • reported from 7 observing codes during 1.4509 days: 204, 291, 300, 703, E10, F51, H21
  • designation assigned to Catalina Sky Survey observation at 0450 UTC 23 Oct. 2012
  • last observed at 1540 UTC on 24 Oct. 2012 by Faulkes Telescope South program code 3 via Faulkes Telescope South
Links  
441987 2010 NY65   -     departed
Approximate diameter170 meters (H=21.5)
Closest Earth approach7.63 LD at 1658 UTC on 24 June 2019
Inside ten LD of Earth22 to 26 June 2019
Data based onJPL SSD orbit solution #115 downloaded from JPL on 16 July 2019 UTC
based on 656 observations spanning 2010-2019 including radar
Optical observation  
  • reported from 8 observing codes during 14.0630 days: 160, 511, B18, C23, G96, J69, K83, Z80
  • first observed at 2207 UTC on 26 June 2019 by North Obs.
  • last observed at 2338 UTC on 10 July 2019 by Castelmartini Obs.
Radar observation  
  • observed 2 times from one location during 8.4139 days
  • first observed at 1624 UTC on 19 June 2019 by Arecibo
  • last observed at 0220 UTC on 28 June 2019 by Arecibo
Notesradar target
previous observation July-Aug. 2010, observation June-Aug. 2013, observation June-July 2014, observation June-Aug. 2015, observation June-Aug. 2016, passage June 2017 at 7.89 LD, and passage June 2018 at 7.28 LD
Links  
68347 2001 KB67   -     distant
Approximate diameter355 meters (H=19.9)
Closest Earth approach
Distance from Earth127.2 - 140.4 LD min-max during the observation period
Data based onJPL SSD orbit solution #70 downloaded from JPL on 16 July 2019 UTC
based on 576 observations spanning 2001-2019 including radar
Optical observation  
  • reported from 6 observing codes during 39.9842 days: A17, F52, G40, G96, I41, L01
  • first observed at 1004 UTC on 1 June 2019 by the Mt. Lemmon Survey
  • last observed at 0941 UTC on 11 July 2019 by the Zwicky Transient Facility
Notesradar target
previous observation June-July 2017 and passage May 2018 at 9.50 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.