Earth's Busy Neighborhood banner
Sample screen shot from A/CC's animated HTML5 Skychart Viewer.
Sample screen shot from
A/CC's Skychart Viewer
which requires HTML5
and JavaScript run in
browsers such as
FireFox 3.6.3+, IE10,
Opera, or Safari.

Legend - object IDs plus links to more info

Data compiled at 1918 UTC on 12 Dec. 2019 for 41 known objects during a period of seven days from 9 to 15 Dec. 2019. Orange is for objects with a new JPL orbit solution (usually from new observation).

Chart
ID

Full ID
Period
Closest
Passage
Uncertainty

Status
AP42017 AP412.1 LD+/- 2.970 days  departed
UO132019 UO1393.96 LD  departed
WC52019 WC580.3 LD+/- 5.5667 hoursapproaching
WG22019 WG251.87 LD  departed intruder
WG32019 WG393.81 LD+/- 3 minutes  departed
WH22019 WH217.76 LD  departed
WH42019 WH413.58 LD  departed
WJ42019 WJ434.08 LD  departed intruder
WJ62019 WJ610.07 LD  departed
WK22019 WK252.19 LD+/- 2 minutes  departed
WN12019 WN116.8 LD+/- 3.1500 hours  departed
WO22019 WO24.75 LDoutbound
WP62019 WP66.4 LD+/- 18 minutesinbound
WQ32019 WQ336.93 LD  departed
WT32019 WT39.78 LD  departed
WU32019 WU346.17 LD+/- 6 minutes  departed
WV2019 WV30.83 LD  departed
WW2019 WW12.19 LD  departed
WW62019 WW647.7 LD+/- 54 minutes  departed
WZ22019 WZ237.42 LD  departed
XD2019 XD26.31 LD  departed
XE22019 XE27.83 LD  departed
XF2019 XF15.2 LD+/- 39 minutesapproaching
XF22019 XF210.21 LD+/- 2 minutes  departed
XH12019 XH152.3 LD+/- 2.9167 hours  departed
XH22019 XH28.22 LD+/- 6 minutes  departed
XM2019 XM25.34 LD  departed
XM22019 XM213.42 LD  departed
XN2019 XN5.99 LD  departed
XN22019 XN214.35 LD+/- 2 minutes  departed
XO12019 XO17.9 LD+/- 9 minutesinbound
XP2019 XP6.3 LD+/- 22 minutes  departed
XP12019 XP158.4 LD+/- 2.4333 hours  departed
XQ22019 XQ227.0 LD+/- 42 minutes  departed
XR2019 XR19.0 LD+/- 15 minutes  departed
XR12019 XR110.87 LD  departed
XS12019 XS115.49 LD+/- 2 minutes  departed
XT22019 XT22.63 LDoutbound
XV2019 XV9.0 LD+/- 13 minutes  departed
XW12019 XW137.8 LD+/- 1.262 days  departed
XY2019 XY3.17 LD+/- one minuteoutbound
DateTfc.Time
9 Dec. '19Rept. Line
10 Dec. '19Rept. Line
11 Dec. '19Rept. Line
12 Dec. '19Rept. Line
13 Dec. '19Rept. Line
14 Dec. '19 Line
15 Dec. '19 Line

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

2019 XT2   -   outbound
Approximate diameter17 meters (H=26.517)
Closest Earth approach1.42 LD at 1953 UTC on 7 Dec. 2019
Inside Earth SOI6 to 8 Dec. 2019
Inside ten LD of Earth2 to 13 Dec. 2019
Closest Moon approach1.12 LD at 0601 UTC on 8 Dec. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 9 Dec. 2019 UTC
based on 34 observations spanning one day
Optical observation  
  • reported from 3 observing codes during 12.811 hours: 381, X31, Z99
  • designation assigned to Kiso Obs. observation at 1119 UTC 8 Dec. 2019
  • last observed at 0008 UTC on 9 Dec. 2019 by Galilei Obs.
NotesNHATS target
Links  
2019 XQ2   -     departed
Approximate diameter37 meters (H=24.809)
Closest Earth approach5.78 LD at 1120 UTC on 26 Nov. 2019 - Note: JPL reports an approach uncertainty of +/- 42 minutes
Inside ten LD of Earth22 to 30 Nov. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 8 Dec. 2019 UTC
based on 41 observations spanning 2 days
Optical observation  
  • reported from 7 observing codes during 1.8810 days: 204, 587, G96, H21, H36, I52, L01
  • designation assigned to Mt. Lemmon Survey observation at 0938 UTC 6 Dec. 2019
  • last observed at 0647 UTC on 8 Dec. 2019 by ARO Westfield
Notesrisk
Links  
2019 XN2   -     departed
Approximate diameter24 meters (H=25.784)
Closest Earth approach5.61 LD at 1613 UTC on 2 Dec. 2019 - Note: JPL reports an approach uncertainty of +/- 2 minutes
Inside ten LD of Earth28 Nov. until 6 Dec. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 7 Dec. 2019 UTC
based on 44 observations spanning one day
Optical observation  
  • reported from 12 observing codes during 1.4998 days: 246, 587, 734, B49, G96, H21, I52, L01, L34, Q62, X31, Z99
  • designation assigned to Mt. Lemmon Survey observation at 0752 UTC 6 Dec. 2019
  • last observed at 1952 UTC on 7 Dec. 2019 by Sormano Obs.
Links  
2019 XM2   -     departed
Approximate diameter18 meters (H=26.362)
Closest Earth approach2.29 LD at 1751 UTC on 5 Dec. 2019
Inside Earth SOIduring 5 Dec. 2019
Inside ten LD of Earth3 to 8 Dec. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 7 Dec. 2019 UTC
based on 26 observations spanning 2 days
Optical observation  
  • reported from 6 observing codes during 2.0252 days: 381, 587, J95, K61, L01, Z99
  • designation assigned to Kiso Obs. observation at 1722 UTC 5 Dec. 2019
  • last observed at 1758 UTC on 7 Dec. 2019 by Sormano Obs.
Links  
2019 XH2   -     departed
Approximate diameter6 meters (H=28.922)
Closest Earth approach3.25 LD at 1237 UTC on 2 Dec. 2019 - Note: JPL reports an approach uncertainty of +/- 6 minutes
Inside ten LD of Earth24 Nov. until 10 Dec. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 7 Dec. 2019 UTC
based on 19 observations spanning one day
Optical observation  
  • reported from 4 observing codes during 1.1834 days: G96, H21, H36, I52
  • designation assigned to Mt. Lemmon Survey observation at 0538 UTC 6 Dec. 2019
  • last observed at 1002 UTC on 7 Dec. 2019 by Steward Obs. Mt. Lemmon Station
NotesNHATS target
Links  
2019 XF2   -     departed
Approximate diameter13 meters (H=27.027)
Closest Earth approach1.31 LD at 1557 UTC on 4 Dec. 2019 - Note: JPL reports an approach uncertainty of +/- 2 minutes
Inside Earth SOI3 to 5 Dec. 2019
Inside ten LD of Earth30 Nov. until 8 Dec. 2019
Closest Moon approach1.44 LD at 1838 UTC on 4 Dec. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 7 Dec. 2019 UTC
based on 34 observations spanning one day
Optical observation  
  • reported from 8 observing codes during 1.0671 days: 246, 703, 734, H21, H36, I52, J95, Z99
  • designation assigned to Catalina Sky Survey observation at 0512 UTC 6 Dec. 2019
  • last observed at 0649 UTC on 7 Dec. 2019 by Sandlot Obs.
Links  
2019 XE2   -     departed
Approximate diameter14 meters (H=26.871)
Closest Earth approach4.10 LD at 2228 UTC on 4 Dec. 2019
Inside ten LD of Earth29 Nov. until 10 Dec. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 7 Dec. 2019 UTC
based on 43 observations spanning one day
Optical observation  
  • reported from 6 observing codes during 1.1002 days: 246, 703, 734, H21, I52, Z99
  • designation assigned to Catalina Sky Survey observation at 0513 UTC 6 Dec. 2019
  • last observed at 0737 UTC on 7 Dec. 2019 by Farpoint Obs.
Links  
2019 XW1   -     departed
Approximate diameter25 meters (H=25.692)
Closest Earth approach8.28 LD at 1101 UTC on 16 Nov. 2019 - Note: JPL reports an approach uncertainty of +/- 1.262 days
Inside ten LD of Earth13 to 19 Nov. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 6 Dec. 2019 UTC
based on 12 observations spanning 4 days
Optical observation  
  • reported from 2 observing codes during 4.0581 days: G96, V06
  • designation assigned to Mt. Lemmon Survey observation at 0332 UTC 2 Dec. 2019
  • last observed at 0455 UTC on 6 Dec. 2019 by the Mt. Lemmon Survey
NotesNHATS target
Links  
2019 XS1   -     departed
Approximate diameter17 meters (H=26.466)
Closest Earth approach5.60 LD at 1252 UTC on 30 Nov. 2019 - Note: JPL reports an approach uncertainty of +/- 2 minutes
Inside ten LD of Earth25 Nov. until 5 Dec. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 6 Dec. 2019 UTC
based on 16 observations spanning 2 days
Optical observation  
  • reported from 4 observing codes during 1.6120 days: 033, 204, F52, L01
  • designation assigned to Pan-STARRS 2 observation at 1406 UTC 4 Dec. 2019
  • last observed at 0448 UTC on 6 Dec. 2019 by Schiaparelli Obs.
Links  
2019 XR1   -     departed
Approximate diameter21 meters (H=26.063)
Closest Earth approach1.40 LD at 2110 UTC on 4 Dec. 2019
Inside Earth SOI4 to 5 Dec. 2019
Inside ten LD of Earth1 to 8 Dec. 2019
Closest Moon approach1.84 LD at 1614 UTC on 4 Dec. 2019
Data based onJPL SSD orbit solution #3 downloaded from JPL on 7 Dec. 2019 UTC
based on 66 observations spanning 2 days
Optical observation  
  • reported from 12 observing codes during 1.9196 days: 246, 585, 691, B49, G96, H45, I52, K38, K80, L01, O75, T08
  • designation assigned to ATLAS Mauna Loa observation at 1226 UTC 5 Dec. 2019
  • last observed at 1030 UTC on 7 Dec. 2019 by the Mt. Lemmon Survey
Notesrisk
Links  
2019 XP1   -     departed
Approximate diameter36 meters (H=24.846)
Closest Earth approach8.12 LD at 0836 UTC on 18 Nov. 2019 - Note: JPL reports an approach uncertainty of +/- 2.4333 hours
Inside ten LD of Earth16 to 20 Nov. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 5 Dec. 2019 UTC
based on 15 observations spanning 2 days
Optical observation  
  • reported from 4 observing codes during 2.5498 days: 033, G96, H21, K51
  • designation assigned to Mt. Lemmon Survey observation at 0709 UTC 3 Dec. 2019
  • last observed at 2021 UTC on 5 Dec. 2019 by Celado Obs.
Links  
2019 XO1   -   inbound
Approximate diameter42 meters (H=24.53)
Closest Earth approach7.91 LD at 1323 UTC on 13 Dec. 2019 - Note: JPL reports an approach uncertainty of +/- 9 minutes
Inside ten LD of Earth10 to 17 Dec. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 5 Dec. 2019 UTC
based on 20 observations spanning 2 days
Optical observation  
  • reported from 6 observing codes during 1.9283 days: 568, 734, F51, H21, H36, L01
  • designation assigned to Pan-STARRS 1 observation at 1353 UTC 3 Dec. 2019
  • last observed at 1210 UTC on 5 Dec. 2019 by Farpoint Obs.
Links  
2019 XH1   -     departed
Approximate diameter27 meters (H=25.51)
Closest Earth approach4.23 LD at 2118 UTC on 17 Nov. 2019 - Note: JPL reports an approach uncertainty of +/- 2.9167 hours
Inside ten LD of Earth14 to 21 Nov. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 5 Dec. 2019 UTC
based on 13 observations spanning 3 days
Optical observation  
  • reported from 3 observing codes during 2.8665 days: G96, H21, V06
  • designation assigned to Mt. Lemmon Survey observation at 0820 UTC 2 Dec. 2019
  • last observed at 0508 UTC on 5 Dec. 2019 by ARO Westfield
Links  
2019 XY   -   outbound
Approximate diameter9 meters (H=27.954)
Closest Earth approach3.17 LD at 0450 UTC on 9 Dec. 2019
Inside ten LD of Earth5 to 12 Dec. 2019
Data based onJPL SSD orbit solution #2 downloaded from JPL on 6 Dec. 2019 UTC
based on 27 observations spanning 3 days
Optical observation  
  • reported from 6 observing codes during 2.9288 days: 033, G96, H21, I52, L01, W86
  • designation assigned to Mt. Lemmon Survey observation at 0933 UTC 3 Dec. 2019
  • last observed at 0750 UTC on 6 Dec. 2019 by Steward Obs. Mt. Lemmon Station
Links  
2019 XV   -     departed
Approximate diameter5 meters (H=29.14)
Closest Earth approach3.87 LD at 1602 UTC on 19 Nov. 2019 - Note: JPL reports an approach uncertainty of +/- 13 minutes
Inside ten LD of Earth25 Oct. until 11 Dec. 2019
Data based onJPL SSD orbit solution #3 downloaded from JPL on 7 Dec. 2019 UTC
based on 25 observations spanning 4 days
Optical observation  
  • reported from 6 observing codes during 4.1487 days: 033, 291, G96, I52, K51, L01
  • designation assigned to Mt. Lemmon Survey observation at 0734 UTC 3 Dec. 2019
  • last observed at 1108 UTC on 7 Dec. 2019 by the Spacewatch 1.8m telescope
Notesrisk, NHATS target
Links  
2019 XR   -     departed
Approximate diameter8 meters (H=28.08)
Closest Earth approach3.63 LD at 1001 UTC on 28 Nov. 2019 - Note: JPL reports an approach uncertainty of +/- 15 minutes
Inside ten LD of Earth23 Nov. until 3 Dec. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 4 Dec. 2019 UTC
based on 13 observations spanning one day
Optical observation  
  • reported from 3 observing codes during 1.1201 days: F51, G96, I52
  • designation assigned to Mt. Lemmon Survey observation at 0919 UTC 2 Dec. 2019
  • last observed at 1212 UTC on 3 Dec. 2019 by Pan-STARRS 1
Notesrisk
Links  
2019 XP   -     departed
Approximate diameter16 meters (H=26.66)
Closest Earth approach5.50 LD at 2110 UTC on 7 Dec. 2019 - Note: JPL reports an approach uncertainty of +/- 22 minutes
Inside ten LD of Earth4 to 10 Dec. 2019
Data based onJPL SSD orbit solution #3 downloaded from JPL on 6 Dec. 2019 UTC
based on 22 observations spanning one day
Optical observation  
  • reported from 6 observing codes during 16.963 hours: 033, 703, I52, J95, K87, L01
  • designation assigned to Catalina Sky Survey observation at 0717 UTC 3 Dec. 2019
  • last observed at 0015 UTC on 4 Dec. 2019 by Dettelbach Vineyard Obs.
Links  
2019 XN   -     departed
Approximate diameter10 meters (H=27.683)
Closest Earth approach2.43 LD at 1144 UTC on 6 Dec. 2019
Inside ten LD of Earth2 to 10 Dec. 2019
Data based onJPL SSD orbit solution #4 downloaded from JPL on 7 Dec. 2019 UTC
based on 48 observations spanning 3 days
Optical observation  
  • reported from 8 observing codes during 3.6507 days: 033, 246, G96, I52, J95, K63, K87, L01
  • designation assigned to Mt. Lemmon Survey observation at 0525 UTC 3 Dec. 2019
  • last observed at 2102 UTC on 6 Dec. 2019 by Great Shefford Obs.
Links  
2019 XM   -     departed
Approximate diameter8 meters (H=28.079)
Closest Earth approach5.18 LD at 0139 UTC on 30 Nov. 2019
Inside ten LD of Earth26 Nov. until 3 Dec. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 4 Dec. 2019 UTC
based on 14 observations spanning one day
Optical observation  
  • reported from 3 observing codes during 1.6400 days: G96, I52, L01
  • designation assigned to Mt. Lemmon Survey observation at 0606 UTC 2 Dec. 2019
  • last observed at 2128 UTC on 3 Dec. 2019 by Visnjan Obs.
Links  
2019 XF   -   approaching
Approximate diameter74 meters (H=23.311)
Closest Earth approach9.32 LD at 0419 UTC on 18 Dec. 2019 - Note: JPL reports an approach uncertainty of +/- 39 minutes
Inside ten LD of Earth17 to 18 Dec. 2019
Data based onJPL SSD orbit solution #2 downloaded from JPL on 7 Dec. 2019 UTC
based on 21 observations spanning 11 days
Optical observation  
  • reported from 5 observing codes during 10.7973 days: F51, G96, I52, V06, V37
  • first observed at 1345 UTC on 25 Nov. 2019 by Pan-STARRS 1
  • designation assigned to Mt. Lemmon Survey observation at 0850 UTC 2 Dec. 2019
  • last observed at 0853 UTC on 6 Dec. 2019 by LCO McDonald Obs.
Links  
2019 XD   -     departed
Approximate diameter11 meters (H=27.421)
Closest Earth approach7.74 LD at 0816 UTC on 29 Nov. 2019
Inside ten LD of Earth26 Nov. until 1 Dec. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 3 Dec. 2019 UTC
based on 13 observations spanning 5 days
Optical observation  
  • reported from 4 observing codes during 4.6521 days: F51, G96, I52, J95
  • first observed at 1106 UTC on 28 Nov. 2019 by Pan-STARRS 1
  • designation assigned to Mt. Lemmon Survey observation at 0536 UTC 2 Dec. 2019
  • last observed at 0245 UTC on 3 Dec. 2019 by the Mt. Lemmon Survey
Links  
2019 WW6   -     departed
Approximate diameter14 meters (H=26.983)
Closest Earth approach6.69 LD at 0811 UTC on 22 Nov. 2019 - Note: JPL reports an approach uncertainty of +/- 54 minutes
Inside ten LD of Earth19 to 25 Nov. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 11 Dec. 2019 UTC
based on 9 observations
Optical observation  
  • reported from 3 observing codes during 16.706 hours: G96, H21, J04
  • designation assigned to Mt. Lemmon Survey observation at 0515 UTC 26 Nov. 2019
  • last observed at 2158 UTC on 26 Nov. 2019 by ESA Optical Ground Station
Links  
2019 WP6   -   inbound
Approximate diameter21 meters (H=26.074)
Closest Earth approach6.36 LD at 0500 UTC on 14 Dec. 2019 - Note: JPL reports an approach uncertainty of +/- 18 minutes
Inside ten LD of Earth6 to 21 Dec. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 5 Dec. 2019 UTC
based on 18 observations spanning 4 days
Optical observation  
  • reported from 2 observing codes during 3.8994 days: 568, F52
  • designation assigned to Pan-STARRS 2 observation at 0736 UTC 30 Nov. 2019
  • last observed at 0511 UTC on 4 Dec. 2019 by R. Wainscoat via Mauna Kea
NotesNHATS target
Links  
2019 WJ6   -     departed
Approximate diameter46 meters (H=24.345)
Closest Earth approach7.45 LD at 1345 UTC on 7 Dec. 2019
Inside ten LD of Earth6 to 8 Dec. 2019
Data based onJPL SSD orbit solution #2 downloaded from JPL on 5 Dec. 2019 UTC
based on 26 observations spanning 28 days
Optical observation  
  • reported from 6 observing codes during 27.5167 days: 246, 703, F51, F52, K87, W34
  • first observed at 1338 UTC on 7 Nov. 2019 by Pan-STARRS 1
  • designation assigned to Pan-STARRS 2 observation at 0832 UTC 28 Nov. 2019
  • last observed at 0202 UTC on 5 Dec. 2019 by Squirrel Valley Obs.
Links  
2019 WC5   -   approaching
Approximate diameter103 meters (H=22.584)
Closest Earth approach6.32 LD at 0536 UTC on 11 Jan. 2020 - Note: JPL reports an approach uncertainty of +/- 5.5667 hours
Inside ten LD of Earth8 to 13 Jan. 2020
Data based onJPL SSD orbit solution #4 downloaded from JPL on 7 Dec. 2019 UTC
based on 28 observations spanning 11 days
Optical observation  
  • reported from 6 observing codes during 10.8408 days: 291, 691, 807, F51, I52, T12
  • designation assigned to Pan-STARRS 1 observation at 1351 UTC 26 Nov. 2019
  • last observed at 1002 UTC on 7 Dec. 2019 by the Spacewatch 0.9m telescope
Notesrisk
Links  
2019 WJ4   -     departed intruder
Approximate diameter7 meters (H=28.408)
Closest Earth approach0.85 LD at 2004 UTC on 30 Nov. 2019
Inside Earth-Moon system1703-2304 UTC on 30 Nov. 2019
Inside Earth SOI30 Nov. until 1 Dec. 2019
Inside ten LD of Earth28 Nov. until 3 Dec. 2019
Closest Moon approach0.19 LD at 2244 UTC on 30 Nov. 2019
Inside one LD of Moon1719 on 30 Nov. until 0410 UTC on 1 Dec. 2019
Data based onJPL SSD orbit solution #2 downloaded from JPL on 1 Dec. 2019 UTC
based on 21 observations spanning 3 days
Optical observation  
  • reported from 6 observing codes during 3.5019 days: 595, F51, F52, J95, K63, Z99
  • first observed at 1049 UTC on 26 Nov. 2019 by Pan-STARRS 1
  • designation assigned to Pan-STARRS 2 observation at 0913 UTC 29 Nov. 2019
  • last observed at 2252 UTC on 29 Nov. 2019 by Clixby Obs.
Links  
2019 WH4   -     departed
Approximate diameter11 meters (H=27.356)
Closest Earth approach5.81 LD at 0543 UTC on 2 Dec. 2019
Inside ten LD of Earth27 Nov. until 6 Dec. 2019
Data based onJPL SSD orbit solution #3 downloaded from JPL on 4 Dec. 2019 UTC
based on 17 observations spanning 7 days
Optical observation  
  • reported from 4 observing codes during 6.8896 days: 033, F51, F52, J95
  • first observed at 0600 UTC on 25 Nov. 2019 by Pan-STARRS 2
  • designation assigned to Pan-STARRS 1 observation at 0842 UTC 29 Nov. 2019
  • last observed at 0321 UTC on 2 Dec. 2019 by Great Shefford Obs.
Notesrisk
Links  
2019 WU3   -     departed
Approximate diameter17 meters (H=26.537)
Closest Earth approach6.01 LD at 1335 UTC on 21 Nov. 2019 - Note: JPL reports an approach uncertainty of +/- 6 minutes
Inside ten LD of Earth18 to 24 Nov. 2019
Data based onJPL SSD orbit solution #2 downloaded from JPL on 2 Dec. 2019 UTC
based on 16 observations spanning 4 days
Optical observation  
  • reported from 4 observing codes during 3.8673 days: 658, F52, I52, Z84
  • designation assigned to Pan-STARRS 2 observation at 0844 UTC 28 Nov. 2019
  • last observed at 0533 UTC on 2 Dec. 2019 by Steward Obs. Mt. Lemmon Station
Links  
2019 WT3   -     departed
Approximate diameter41 meters (H=24.568)
Closest Earth approach9.78 LD at 1318 UTC on 9 Dec. 2019
Inside ten LD of Earth8 to 10 Dec. 2019
Data based onJPL SSD orbit solution #8 downloaded from JPL on 12 Dec. 2019 UTC
based on 63 observations spanning 14 days
Optical observation  
  • reported from 12 observing codes during 13.6392 days: 246, 568, 734, 807, F51, H21, I52, J95, K87, T08, W86, Z80
  • designation assigned to Pan-STARRS 1 observation at 1228 UTC 27 Nov. 2019
  • last observed at 0349 UTC on 11 Dec. 2019 by Great Shefford Obs.
Links  
2019 WQ3   -     departed
Approximate diameter81 meters (H=23.104)
Closest Earth approach9.67 LD at 0306 UTC on 30 Nov. 2019
Inside ten LD of Earth29 to 30 Nov. 2019
Data based onJPL SSD orbit solution #6 downloaded from JPL on 4 Dec. 2019 UTC
based on 184 observations spanning 6 days
Optical observation  
  • reported from 21 observing codes during 5.9763 days: 203, 204, 595, C47, C97, G33, H06, H45, I52, J69, J95, K61, K87, L04, O75, P93, T05, T08, W34, Z80, Z84
  • designation assigned to ATLAS Mauna Loa observation at 0617 UTC 27 Nov. 2019
  • last observed at 0543 UTC on 3 Dec. 2019 by Steward Obs. Mt. Lemmon Station
Links  
2019 WG3   -     departed
Approximate diameter35 meters (H=24.935)
Closest Earth approach9.73 LD at 0526 UTC on 12 Nov. 2019 - Note: JPL reports an approach uncertainty of +/- 3 minutes
Inside ten LD of Earth11 to 12 Nov. 2019
Data based onJPL SSD orbit solution #2 downloaded from JPL on 29 Nov. 2019 UTC
based on 16 observations spanning 9 days
Optical observation  
  • reported from 3 observing codes during 9.0938 days: 568, F51, G96
  • designation assigned to Mt. Lemmon Survey observation at 0831 UTC 19 Nov. 2019
  • last observed at 1046 UTC on 28 Nov. 2019 by Pan-STARRS 1
Links  
2019 WZ2   -     departed
Approximate diameter29 meters (H=25.359)
Closest Earth approach8.84 LD at 2333 UTC on 21 Nov. 2019
Inside ten LD of Earth19 to 24 Nov. 2019
Data based onJPL SSD orbit solution #2 downloaded from JPL on 30 Nov. 2019 UTC
based on 18 observations spanning 5 days
Optical observation  
  • reported from 3 observing codes during 4.9123 days: 807, F52, J04
  • first observed at 0952 UTC on 24 Nov. 2019 by Pan-STARRS 2
  • designation assigned to Pan-STARRS 2 observation at 0958 UTC 26 Nov. 2019
  • last observed at 0746 UTC on 29 Nov. 2019 by Robert Holmes via Cerro Tololo Inter-American Obs.
Links  
2019 WO2   -   outbound
Approximate diameter30 meters (H=25.245)
Closest Earth approach4.75 LD at 1846 UTC on 9 Dec. 2019
Inside ten LD of Earth4 to 14 Dec. 2019
Data based onJPL SSD orbit solution #8 downloaded from JPL on 12 Dec. 2019 UTC
based on 71 observations spanning 16 days
Optical observation  
  • reported from 16 observing codes during 15.9404 days: 033, 246, 587, 595, 619, F51, H21, H45, I52, J04, J95, K61, K87, L01, L39, V39
  • designation assigned to Pan-STARRS 1 observation at 0503 UTC 25 Nov. 2019
  • last observed at 0338 UTC on 11 Dec. 2019 by Great Shefford Obs.
Links  
2019 WK2   -     departed
Approximate diameter27 meters (H=25.507)
Closest Earth approach2.71 LD at 0843 UTC on 23 Nov. 2019 - Note: JPL reports an approach uncertainty of +/- 2 minutes
Inside ten LD of Earth20 to 26 Nov. 2019
Data based onJPL SSD orbit solution #3 downloaded from JPL on 5 Dec. 2019 UTC
based on 54 observations spanning one day
Optical observation  
  • reported from 12 observing codes during 21.302 hours: 104, 160, 474, 587, 595, 850, H21, J04, K63, L01, O75, T08
  • designation assigned to ATLAS Mauna Loa observation at 1043 UTC 25 Nov. 2019
  • last observed at 0801 UTC on 26 Nov. 2019 by ARO Westfield
Links  
2019 WH2   -     departed
Approximate diameter15 meters (H=26.773)
Closest Earth approach3.43 LD at 0914 UTC on 1 Dec. 2019
Inside ten LD of Earth27 Nov. until 5 Dec. 2019
Data based onJPL SSD orbit solution #6 downloaded from JPL on 7 Dec. 2019 UTC
based on 36 observations spanning 7 days
Optical observation  
  • reported from 7 observing codes during 6.8374 days: 204, F51, F52, J04, J95, K91, L01
  • designation assigned to Pan-STARRS 2 observation at 0842 UTC 25 Nov. 2019
  • last observed at 0447 UTC on 2 Dec. 2019 by Great Shefford Obs.
Links  
2019 WG2   -     departed intruder
Approximate diameter34 meters (H=24.971)
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 approach1.22 LD at 0533 UTC on 23 Nov. 2019
Data based onJPL SSD orbit solution #6 downloaded from JPL on 4 Dec. 2019 UTC
based on 41 observations spanning 9 days
Optical observation  
  • reported from 9 observing codes during 8.9390 days: 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 1025 UTC on 3 Dec. 2019 by UH/Tholen NEO Follow-Up 2.24m Telescope
Notesrisk
Links  
2019 WN1   -     departed
Approximate diameter17 meters (H=26.467)
Closest Earth approach4.26 LD at 2113 UTC on 1 Dec. 2019 - Note: JPL reports an approach uncertainty of +/- 3.1500 hours
Inside ten LD of Earth27 Nov. until 5 Dec. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 24 Nov. 2019 UTC
based on 11 observations spanning 5 days
Optical observation  
  • reported from 2 observing codes during 5.0213 days: G96, V06
  • designation assigned to Mt. Lemmon Survey observation at 0734 UTC 19 Nov. 2019
  • last observed at 0805 UTC on 24 Nov. 2019 by the Mt. Lemmon Survey
Links  
2019 WW   -     departed
Approximate diameter42 meters (H=24.525)
Closest Earth approach8.61 LD at 0119 UTC on 5 Dec. 2019
Inside ten LD of Earth2 to 7 Dec. 2019
Data based onJPL SSD orbit solution #9 downloaded from JPL on 7 Dec. 2019 UTC
based on 54 observations spanning 12 days
Optical observation  
  • reported from 10 observing codes during 12.5469 days: 033, 204, 595, G96, H21, I52, J95, K87, L01, V06
  • designation assigned to Mt. Lemmon Survey observation at 0940 UTC 19 Nov. 2019
  • last observed at 2248 UTC on 1 Dec. 2019 by Great Shefford Obs.
NotesNHATS target
Links  
2019 WV   -     departed
Approximate diameter35 meters (H=24.91)
Closest Earth approach6.53 LD at 0251 UTC on 13 Nov. 2019
Inside ten LD of Earth6 to 19 Nov. 2019
Data based onJPL SSD orbit solution #9 downloaded from JPL on 9 Dec. 2019 UTC
based on 54 observations spanning 16 days
Optical observation  
  • reported from 9 observing codes during 15.9214 days: 204, 474, 691, H21, H36, I52, K87, L01, T08
  • designation assigned to ATLAS Mauna Loa observation at 1302 UTC 21 Nov. 2019
  • last observed at 1109 UTC on 7 Dec. 2019 by the Spacewatch 0.9m telescope
NotesNHATS target
Links  
2019 UO13   -     departed
Approximate diameter60 meters (H=23.753)
Closest Earth approach5.34 LD at 0813 UTC on 31 Oct. 2019
Inside ten LD of Earth27 Oct. until 4 Nov. 2019
Data based onJPL SSD orbit solution #20 downloaded from JPL on 10 Dec. 2019 UTC
based on 325 observations spanning 32 days
Optical observation  
  • reported from 34 observing codes during 32.1888 days: 204, 291, 595, 703, 718, 734, 850, 958, A17, C95, C97, F51, G34, G96, H01, H06, H21, H36, I41, I52, J22, J69, J95, K62, K74, K87, L01, L34, N55, V01, W25, Z36, Z57, Z80
  • designation assigned to Catalina Sky Survey observation at 0224 UTC 31 Oct. 2019
  • last observed at 0656 UTC on 2 Dec. 2019 by the Mt. Lemmon Survey
Links  
2017 AP4   -     departed
Approximate diameter14 meters (H=26.9)
Closest Earth approach8.46 LD at 2153 UTC on 3 Dec. 2019 - Note: JPL reports an approach uncertainty of +/- 2.970 days
Inside ten LD of Earth30 Nov. until 7 Dec. 2019
Data based onJPL SSD orbit solution #10 downloaded from JPL on 18 Nov. 2019 UTC (dated 6 April 2017 local)
based on 23 observations spanning 29 days
Optical observation  
    none recent
Notesprevious passage Jan. 2017 at 2.23 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.