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 2217 UTC on 19 Jan. 2019 for 44 known objects during a period of seven days from 16 to 22 Jan. 2019. Orange is for objects with a new JPL orbit solution (usually from new observation).

Chart
ID

Full ID
Period
Closest
Passage
Uncertainty

Status
AA102019 AA109.4 LD+/- 8.7167 hoursapproaching
AB52019 AB57.45 LDpassing
AC92019 AC98.29 LD  departed
AD2019 AD7.63 LD  departed
AE32019 AE324.70 LD  departed
AE92019 AE915.14 LD  departed intruder
AG72019 AG73.92 LDoutbound
AG112019 AG119.60 LD+/- one minuteapproaching
AH32019 AH340.96 LD  departed
AH122019 AH1221.34 LD+/- one minute  departed
AJ132019 AJ138.09 LD+/- 5 minutesapproaching
AK32019 AK39.26 LD  departed
AK122019 AK129.42 LD  departed
AL62019 AL643.1 LD+/- 10 minutes  departed
AM82019 AM88.65 LD+/- 2 minutes  departed
AN122019 AN1213.4 LD+/- 18 minutesapproaching
AQ22019 AQ227.64 LD  departed
AR22019 AR28.04 LDoutbound
AR72019 AR78.49 LD  departed
AR82019 AR89.69 LD  departed
AS32019 AS345.24 LD+/- 2 minutes  departed
AS52019 AS518.44 LD  departed intruder
AS112019 AS116.95 LD+/- 2 minutesinbound
AT2019 AT42.02 LD  departed
AT22019 AT267.95 LD  departed
AT62019 AT68.14 LDoutbound
AT132019 AT134.87 LDoutbound
AU2019 AU10.73 LD  departed
AU62019 AU64.23 LDoutbound
AU92019 AU97.64 LDoutbound
AW22019 AW259.1 LD+/- 8 minutes  departed intruder
AX32019 AX312.32 LD+/- 4 minutes  departed
AX52019 AX518.59 LD  departed
UC22018 UC2365.63 LD  departed
VX42013 VX450.97 LD  departed
WV2018 WV129.65 LD  departed
XO42018 XO411.3 LD+/- 17 minutes  departed
XS42018 XS457.99 LD  departed
YA12018 YA145.56 LD+/- 2 minutes  departed
YK22018 YK278.98 LD  departed
YM22013 YM29.63 LD  departed
YO22018 YO216.59 LD  departed intruder
YQ22018 YQ210.69 LD  departed
YU22018 YU26.81 LDoutbound
DateTfc.Time
16 Jan. '19Rept. Line
17 Jan. '19Rept. Line
18 Jan. '19Rept. Line
19 Jan. '19Rept. Line
20 Jan. '19Rept. Line
21 Jan. '19 Line
22 Jan. '19 Line

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

2019 AT13   -   outbound
Approximate diameter14 meters (H=26.868)
Closest Earth approach3.14 LD at 2128 UTC on 12 Jan. 2019
Inside ten LD of Earth4 to 20 Jan. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 17 Jan. 2019 UTC
based on 18 observations spanning 2 days
Optical observation  
  • reported from 3 observing codes during 2.0978 days: 703, F52, I52
  • designation assigned to Catalina Sky Survey observation at 1014 UTC 15 Jan. 2019
  • last observed at 1234 UTC on 17 Jan. 2019 by the Catalina Sky Survey
NotesNHATS target
Links  
2019 AJ13   -   approaching
Approximate diameter8 meters (H=28.259)
Closest Earth approach7.60 LD at 0046 UTC on 25 Jan. 2019 - Note: JPL reports an approach uncertainty of +/- 5 minutes
Inside ten LD of Earth20 to 29 Jan. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 17 Jan. 2019 UTC
based on 9 observations spanning 4 days
Optical observation  
NotesNHATS target
Links  
2019 AN12   -   approaching
Approximate diameter28 meters (H=25.41)
Closest Earth approach9.14 LD at 0230 UTC on 25 Jan. 2019 - Note: JPL reports an approach uncertainty of +/- 18 minutes
Inside ten LD of Earth24 to 25 Jan. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 17 Jan. 2019 UTC
based on 10 observations spanning 6 days
Optical observation  
  • reported from 2 observing codes during 5.9641 days: 568, F51
  • first observed at 0949 UTC on 9 Jan. 2019 by Pan-STARRS 1
  • designation assigned to Pan-STARRS 1 observation at 1250 UTC 14 Jan. 2019
  • last observed at 0858 UTC on 15 Jan. 2019 by R. Wainscoat via Mauna Kea
Links  
2019 AK12   -     departed
Approximate diameter11 meters (H=27.487)
Closest Earth approach1.95 LD at 0732 UTC on 13 Jan. 2019
Inside Earth SOI12 to 13 Jan. 2019
Inside ten LD of Earth10 to 16 Jan. 2019
Closest Moon approach1.88 LD at 0518 UTC on 13 Jan. 2019
Data based onJPL SSD orbit solution #3 downloaded from JPL on 18 Jan. 2019 UTC
based on 31 observations spanning 3 days
Optical observation  
Notesrisk
Links  
2019 AH12   -     departed
Approximate diameter16 meters (H=26.656)
Closest Earth approach6.26 LD at 0911 UTC on 9 Jan. 2019
Inside ten LD of Earth6 to 11 Jan. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 17 Jan. 2019 UTC
based on 21 observations spanning 3 days
Optical observation  
  • reported from 4 observing codes during 2.7681 days: 474, 807, G96, I52
  • designation assigned to Mt. Lemmon Survey observation at 0714 UTC 12 Jan. 2019
  • last observed at 0140 UTC on 15 Jan. 2019 by Robert Holmes via Cerro Tololo Inter-American Obs.
Links  
2019 AS11   -   inbound
Approximate diameter15 meters (H=26.759)
Closest Earth approach6.95 LD at 0027 UTC on 23 Jan. 2019 - Note: JPL reports an approach uncertainty of +/- 2 minutes
Inside ten LD of Earth15 to 30 Jan. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 15 Jan. 2019 UTC
based on 19 observations spanning 3 days
Optical observation  
  • reported from 5 observing codes during 2.9108 days: 204, 568, F51, I52, J95
  • first observed at 0811 UTC on 12 Jan. 2019 by Pan-STARRS 1
  • designation assigned to Pan-STARRS 1 observation at 0904 UTC 13 Jan. 2019
  • last observed at 0603 UTC on 15 Jan. 2019 by Steward Obs. Mt. Lemmon Station
NotesNHATS target
Links  
2019 AG11   -   approaching
Approximate diameter19 meters (H=26.28)
Closest Earth approach8.59 LD at 1200 UTC on 25 Jan. 2019
Inside ten LD of Earth22 to 28 Jan. 2019
Data based onJPL SSD orbit solution #3 downloaded from JPL on 18 Jan. 2019 UTC
based on 20 observations spanning 6 days
Optical observation  
  • reported from 6 observing codes during 5.9696 days: 568, 807, F51, I52, L01, T12
  • first observed at 0716 UTC on 11 Jan. 2019 by Pan-STARRS 1
  • designation assigned to Pan-STARRS 1 observation at 0735 UTC 11 Jan. 2019
  • last observed at 0632 UTC on 17 Jan. 2019 by UH/Tholen NEO Follow-Up 2.24m Telescope
Links  
2019 AA10   -   approaching
Approximate diameter26 meters (H=25.54)
Closest Earth approach5.62 LD at 0944 UTC on 26 Jan. 2019 - Note: JPL reports an approach uncertainty of +/- 8.7167 hours
Inside ten LD of Earth22 to 30 Jan. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 13 Jan. 2019 UTC
based on 9 observations spanning 2 days
Optical observation  
  • reported from 3 observing codes during 1.7331 days: 568, 807, F51
  • designation assigned to Pan-STARRS 1 observation at 0840 UTC 11 Jan. 2019
  • last observed at 0216 UTC on 13 Jan. 2019 by Robert Holmes via Cerro Tololo Inter-American Obs.
Links  
2019 AU9   -   outbound
Approximate diameter15 meters (H=26.819)
Closest Earth approach7.64 LD at 0941 UTC on 16 Jan. 2019
Inside ten LD of Earth10 to 22 Jan. 2019
Data based onJPL SSD orbit solution #4 downloaded from JPL on 19 Jan. 2019 UTC
based on 23 observations spanning 9 days
Optical observation  
  • reported from 6 observing codes during 8.9742 days: 568, 807, F51, G96, I52, V06
  • designation assigned to Pan-STARRS 1 observation at 1250 UTC 10 Jan. 2019
  • last observed at 1213 UTC on 19 Jan. 2019 by the Catalina Sky Survey Kuiper Telescope
NotesNHATS target
Links  
2019 AE9   -     departed intruder
Approximate diameter13 meters (H=27.151)
Closest Earth approach0.26 LD at 1108 UTC on 12 Jan. 2019
Inside Earth-Moon system0544-1632 UTC on 12 Jan. 2019
Inside Earth SOI11 to 13 Jan. 2019
Inside ten LD of Earth10 to 14 Jan. 2019
Closest Moon approach1.21 LD at 1154 UTC on 12 Jan. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 12 Jan. 2019 UTC
based on 60 observations spanning one day
Optical observation  
  • reported from 5 observing codes during 24.862 hours: 474, T05, T08, T12, Z21
  • designation assigned to ATLAS Haleakala observation at 0958 UTC 11 Jan. 2019
  • last observed at 1049 UTC on 12 Jan. 2019 by Mt. John Obs.
Links  
2019 AC9   -     departed
Approximate diameter24 meters (H=25.714)
Closest Earth approach4.13 LD at 1930 UTC on 12 Jan. 2019
Inside ten LD of Earth8 to 16 Jan. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 12 Jan. 2019 UTC
based on 28 observations spanning one day
Optical observation  
  • reported from 6 observing codes during 1.5005 days: 104, 106, 595, I41, I52, L01
  • designation assigned to Palomar Transient Factory observation at 0619 UTC 10 Jan. 2019
  • last observed at 1820 UTC on 11 Jan. 2019 by Crni Vrh Obs.
Links  
2019 AR8   -     departed
Approximate diameter26 meters (H=25.569)
Closest Earth approach9.69 LD at 2013 UTC on 16 Jan. 2019
Inside ten LD of Earth15 to 18 Jan. 2019
Data based onJPL SSD orbit solution #2 downloaded from JPL on 12 Jan. 2019 UTC
based on 29 observations spanning 2 days
Optical observation  
  • reported from 8 observing codes during 2.0820 days: 203, 204, 568, F51, F65, J95, K51, L01
  • designation assigned to Pan-STARRS 1 observation at 1247 UTC 9 Jan. 2019
  • last observed at 1445 UTC on 11 Jan. 2019 by Pan-STARRS 1
NotesNHATS target
Links  
2019 AM8   -     departed
Approximate diameter14 meters (H=26.937)
Closest Earth approach8.62 LD at 1602 UTC on 15 Jan. 2019 - Note: JPL reports an approach uncertainty of +/- 2 minutes
Inside ten LD of Earth13 to 17 Jan. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 11 Jan. 2019 UTC
based on 17 observations spanning 2 days
Optical observation  
  • reported from 4 observing codes during 1.9264 days: G96, I52, J04, V06
  • designation assigned to Mt. Lemmon Survey observation at 0754 UTC 9 Jan. 2019
  • last observed at 0608 UTC on 11 Jan. 2019 by Steward Obs. Mt. Lemmon Station
NotesNHATS target
Links  
2019 AR7   -     departed
Approximate diameter15 meters (H=26.731)
Closest Earth approach3.46 LD at 1643 UTC on 7 Jan. 2019
Inside ten LD of Earth28 Dec. until 17 Jan. 2019
Data based onJPL SSD orbit solution #5 downloaded from JPL on 17 Jan. 2019 UTC
based on 51 observations spanning 9 days
Optical observation  
  • reported from 7 observing codes during 8.6592 days: 204, 474, I52, J04, J95, T05, T08
  • designation assigned to ATLAS Haleakala observation at 1224 UTC 8 Jan. 2019
  • last observed at 0413 UTC on 17 Jan. 2019 by Steward Obs. Mt. Lemmon Station
NotesNHATS target
Links  
2019 AG7   -   outbound
Approximate diameter28 meters (H=25.441)
Closest Earth approach3.92 LD at 2241 UTC on 15 Jan. 2019
Inside ten LD of Earth9 to 22 Jan. 2019
Data based onJPL SSD orbit solution #9 downloaded from JPL on 19 Jan. 2019 UTC
based on 90 observations spanning 2018-2019
Optical observation  
  • reported from 17 observing codes during 18.4749 days: 204, 291, 474, 703, 807, F51, F65, G40, I52, J04, J95, L01, Q62, T05, T08, T12, Z80
  • first observed at 1444 UTC on 31 Dec. 2018 by Pan-STARRS 1
  • designation assigned to Catalina Sky Survey observation at 0907 UTC 9 Jan. 2019
  • last observed at 0208 UTC on 19 Jan. 2019 by Steward Obs. Mt. Lemmon Station
NotesNHATS target
Links  
2019 AU6   -   outbound
Approximate diameter16 meters (H=26.563)
Closest Earth approach2.56 LD at 0737 UTC on 14 Jan. 2019
Inside ten LD of Earth9 to 19 Jan. 2019
Data based onJPL SSD orbit solution #4 downloaded from JPL on 13 Jan. 2019 UTC
based on 29 observations spanning 10 days
Optical observation  
  • reported from 7 observing codes during 10.0081 days: 204, 291, F51, G96, I52, J04, T12
  • first observed at 1343 UTC on 2 Jan. 2019 by Pan-STARRS 1
  • designation assigned to Mt. Lemmon Survey observation at 1029 UTC 8 Jan. 2019
  • last observed at 1355 UTC on 12 Jan. 2019 by UH/Tholen NEO Follow-Up 2.24m Telescope
Notesrisk, NHATS target
Links  
2019 AT6   -   outbound
Approximate diameter10 meters (H=27.676)
Closest Earth approach8.08 LD at 0319 UTC on 15 Jan. 2019
Inside ten LD of Earth10 to 20 Jan. 2019
Data based onJPL SSD orbit solution #3 downloaded from JPL on 11 Jan. 2019 UTC
based on 29 observations spanning 3 days
Optical observation  
  • reported from 7 observing codes during 2.9476 days: 204, F51, G96, I52, J95, K51, V06
  • designation assigned to Mt. Lemmon Survey observation at 0833 UTC 8 Jan. 2019
  • last observed at 0717 UTC on 11 Jan. 2019 by Steward Obs. Mt. Lemmon Station
NotesNHATS target
Links  
2019 AL6   -     departed
Approximate diameter19 meters (H=26.226)
Closest Earth approach6.57 LD at 1400 UTC on 22 Dec. 2018 - Note: JPL reports an approach uncertainty of +/- 10 minutes
Inside ten LD of Earth18 to 27 Dec. 2018
Data based onJPL SSD orbit solution #2 downloaded from JPL on 13 Jan. 2019 UTC
based on 18 observations spanning 7 days
Optical observation  
  • reported from 3 observing codes during 6.9912 days: F51, G96, H21
  • designation assigned to Mt. Lemmon Survey observation at 0853 UTC 4 Jan. 2019
  • last observed at 0840 UTC on 11 Jan. 2019 by ARO Westfield
Links  
2019 AX5   -     departed
Approximate diameter22 meters (H=25.934)
Closest Earth approach9.47 LD at 0041 UTC on 9 Jan. 2019
Inside ten LD of Earth7 to 10 Jan. 2019
Data based onJPL SSD orbit solution #3 downloaded from JPL on 11 Jan. 2019 UTC
based on 46 observations spanning 7 days
Optical observation  
  • reported from 8 observing codes during 6.8106 days: 104, 204, F51, G96, I52, J95, K51, L01
  • first observed at 1007 UTC on 4 Jan. 2019 by Pan-STARRS 1
  • designation assigned to Mt. Lemmon Survey observation at 0217 UTC 8 Jan. 2019
  • last observed at 0534 UTC on 11 Jan. 2019 by Steward Obs. Mt. Lemmon Station
Links  
2019 AS5   -     departed intruder
Approximate diameter1 meters (H=32.301)
Closest Earth approach0.04 LD at 0036 UTC on 8 Jan. 2019
Inside Earth-Moon system1425 on 7 Jan. until 1047 UTC on 8 Jan. 2019
Inside Earth SOI6 to 9 Jan. 2019
Inside ten LD of Earth3 to 12 Jan. 2019
Closest Moon approach0.41 LD at 1452 UTC on 7 Jan. 2019
Inside one LD of Moon0524 on 7 Jan. until 0009 UTC on 8 Jan. 2019
Data based onJPL SSD orbit solution #2 downloaded from JPL on 10 Jan. 2019 UTC
based on 18 observations spanning one day
Optical observation  
  • reported from 5 observing codes during 1.1061 days: 291, G96, I52, J04, T12
  • designation assigned to Mt. Lemmon Survey observation at 0836 UTC 8 Jan. 2019
  • last observed at 1109 UTC on 9 Jan. 2019 by UH/Tholen NEO Follow-Up 2.24m Telescope
Notesrisk, NHATS target
Links  
2019 AB5   -   passing
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 #5 downloaded from JPL on 15 Jan. 2019 UTC
based on 26 observations spanning 12 days
Optical observation  
  • reported from 7 observing codes during 12.0815 days: 204, 474, 568, 807, F51, I52, L01
  • designation assigned to Pan-STARRS 1 observation at 0853 UTC 2 Jan. 2019
  • last observed at 1050 UTC on 14 Jan. 2019 by Mt. John Obs.
Links  
2019 AX3   -     departed
Approximate diameter11 meters (H=27.5)
Closest Earth approach9.17 LD at 2230 UTC on 4 Jan. 2019 - Note: JPL reports an approach uncertainty of +/- 4 minutes
Inside ten LD of Earth30 Dec. until 10 Jan. 2019
Data based onJPL SSD orbit solution #2 downloaded from JPL on 8 Jan. 2019 UTC
based on 17 observations spanning 4 days
Optical observation  
  • reported from 5 observing codes during 3.9294 days: 474, 568, F51, H21, I52
  • designation assigned to Pan-STARRS 1 observation at 1246 UTC 4 Jan. 2019
  • last observed at 1105 UTC on 8 Jan. 2019 by Steward Obs. Mt. Lemmon Station
NotesNHATS target
Links  
2019 AS3   -     departed
Approximate diameter8 meters (H=28.063)
Closest Earth approach1.64 LD at 0422 UTC on 2 Jan. 2019 - Note: JPL reports an approach uncertainty of +/- 2 minutes
Inside Earth SOI1 to 2 Jan. 2019
Inside ten LD of Earth30 Dec. until 5 Jan. 2019
Closest Moon approach2.30 LD at 0211 UTC on 2 Jan. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 8 Jan. 2019 UTC
based on 12 observations spanning 2 days
Optical observation  
  • reported from 2 observing codes during 2.0125 days: G96, H21
  • designation assigned to Mt. Lemmon Survey observation at 0723 UTC 4 Jan. 2019
  • last observed at 0741 UTC on 6 Jan. 2019 by ARO Westfield
Links  
2019 AK3   -     departed
Approximate diameter13 meters (H=27.1)
Closest Earth approach4.87 LD at 1702 UTC on 12 Jan. 2019
Inside ten LD of Earth9 to 16 Jan. 2019
Data based onJPL SSD orbit solution #6 downloaded from JPL on 13 Jan. 2019 UTC
based on 37 observations spanning 8 days
Optical observation  
  • reported from 8 observing codes during 8.0453 days: 204, 291, 568, F51, I52, J04, L01, T12
  • designation assigned to Pan-STARRS 1 observation at 1122 UTC 4 Jan. 2019
  • last observed at 1227 UTC on 12 Jan. 2019 by Steward Obs. Mt. Lemmon Station
Links  
2019 AH3   -     departed
Approximate diameter9 meters (H=27.969)
Closest Earth approach1.33 LD at 2258 UTC on 5 Jan. 2019
Inside Earth SOI5 to 6 Jan. 2019
Inside ten LD of Earth3 to 8 Jan. 2019
Closest Moon approach1.43 LD at 0534 UTC on 6 Jan. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 6 Jan. 2019 UTC
based on 17 observations spanning one day
Optical observation  
  • reported from 4 observing codes during 1.2883 days: 104, 568, G96, P93
  • designation assigned to Mt. Lemmon Survey observation at 0614 UTC 4 Jan. 2019
  • last observed at 1309 UTC on 5 Jan. 2019 by JAXA Space Tracking & Communications Center
Notesrisk
Links  
2019 AE3   -     departed
Approximate diameter12 meters (H=27.203)
Closest Earth approach2.03 LD at 2209 UTC on 2 Jan. 2019
Inside Earth SOI2 to 3 Jan. 2019
Inside ten LD of Earth28 Dec. until 8 Jan. 2019
Closest Moon approach2.86 LD at 1942 UTC on 2 Jan. 2019
Data based onJPL SSD orbit solution #1 downloaded from JPL on 6 Jan. 2019 UTC
based on 22 observations spanning one day
Optical observation  
  • reported from 6 observing codes during 1.6569 days: 595, 703, H21, I52, J95, L01
  • designation assigned to Catalina Sky Survey observation at 0212 UTC 4 Jan. 2019
  • last observed at 1758 UTC on 5 Jan. 2019 by Farra d'Isonzo Obs.
NotesNHATS target
Links  
2019 AW2   -     departed intruder
Approximate diameter32 meters (H=25.1)
Closest Earth approach0.43 LD at 1235 UTC on 28 Dec. 2018 - Note: JPL reports an approach uncertainty of +/- 8 minutes
Inside Earth-Moon system0540-1930 UTC on 28 Dec. 2018
Inside Earth SOI27 to 29 Dec. 2018
Inside ten LD of Earth25 to 31 Dec. 2018
Closest Moon approach1.24 LD at 1542 UTC on 28 Dec. 2018
Data based onJPL SSD orbit solution #7 downloaded from JPL on 19 Jan. 2019 UTC
based on 39 observations spanning 14 days
Optical observation  
  • reported from 8 observing codes during 13.9287 days: 203, 291, 568, F51, I52, J04, L01, T12
  • first observed at 1123 UTC on 3 Jan. 2019 by Pan-STARRS 1
  • designation assigned to Pan-STARRS 1 observation at 1128 UTC 3 Jan. 2019
  • last observed at 0941 UTC on 17 Jan. 2019 by UH/Tholen NEO Follow-Up 2.24m Telescope
Notesrisk
Links  
2019 AT2   -     departed
Approximate diameter29 meters (H=25.3)
Closest Earth approach9.21 LD at 0349 UTC on 29 Dec. 2018
Inside ten LD of Earth28 to 30 Dec. 2018
Data based onJPL SSD orbit solution #2 downloaded from JPL on 9 Jan. 2019 UTC
based on 24 observations spanning 6 days
Optical observation  
  • reported from 6 observing codes during 5.7796 days: 204, 568, F51, I52, L01, V06
  • designation assigned to Pan-STARRS 1 observation at 1012 UTC 3 Jan. 2019
  • last observed at 0454 UTC on 9 Jan. 2019 by the Catalina Sky Survey Kuiper Telescope
Links  
2019 AR2   -   outbound
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 #11 downloaded from JPL on 19 Jan. 2019 UTC
based on 133 observations spanning 14 days
Optical observation  
  • reported from 20 observing codes during 14.1541 days: 160, 203, 204, 474, 587, 595, 807, B49, H21, I19, I52, K38, K83, K88, L01, P93, T05, T08, W34, Z80
  • designation assigned to ATLAS Haleakala observation at 0840 UTC 3 Jan. 2019
  • last observed at 1222 UTC on 17 Jan. 2019 by ATLAS Haleakala
NotesNHATS target
Links  
2019 AQ2   -     departed
Approximate diameter28 meters (H=25.4)
Closest Earth approach8.00 LD at 2156 UTC on 26 Dec. 2018
Inside ten LD of Earth22 to 31 Dec. 2018
Data based onJPL SSD orbit solution #8 downloaded from JPL on 17 Jan. 2019 UTC
based on 59 observations spanning 12 days
Optical observation  
  • reported from 12 observing codes during 11.9231 days: 104, 204, 291, 568, 691, F51, H21, I52, J04, K88, L01, T12
  • designation assigned to Pan-STARRS 1 observation at 0754 UTC 3 Jan. 2019
  • last observed at 0603 UTC on 15 Jan. 2019 by UH/Tholen NEO Follow-Up 2.24m Telescope
Notesrisk, NHATS 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 #7 downloaded from JPL on 17 Jan. 2019 UTC
based on 41 observations spanning 14 days
Optical observation  
  • reported from 10 observing codes during 14.0456 days: 204, 291, 474, 568, 691, F51, I19, I52, K38, K88
  • designation assigned to Pan-STARRS 1 observation at 0905 UTC 3 Jan. 2019
  • last observed at 1011 UTC on 17 Jan. 2019 by the Spacewatch 1.8m telescope
NotesNHATS target
Links  
2019 AT   -     departed
Approximate diameter32 meters (H=25.1)
Closest Earth approach7.64 LD at 0047 UTC on 22 Dec. 2018
Inside ten LD of Earth18 to 25 Dec. 2018
Data based onJPL SSD orbit solution #3 downloaded from JPL on 13 Jan. 2019 UTC
based on 17 observations spanning 2018-2019
Optical observation  
  • reported from 3 observing codes during 12.0100 days: 568, 807, F51
  • first observed at 1346 UTC on 31 Dec. 2018 by Pan-STARRS 1
  • designation assigned to Pan-STARRS 1 observation at 1458 UTC 2 Jan. 2019
  • last observed at 1400 UTC on 12 Jan. 2019 by Pan-STARRS 1
Links  
2019 AD   -     departed
Approximate diameter10 meters (H=27.6)
Closest Earth approach2.99 LD at 0848 UTC on 10 Jan. 2019
Inside ten LD of Earth2 to 18 Jan. 2019
Data based onJPL SSD orbit solution #4 downloaded from JPL on 10 Jan. 2019 UTC
based on 35 observations spanning 8 days
Optical observation  
  • reported from 7 observing codes during 7.6200 days: 291, 381, 734, F51, I52, J95, L01
  • first observed at 1115 UTC on 2 Jan. 2019 by Pan-STARRS 1
  • designation assigned to Pan-STARRS 1 observation at 1156 UTC 2 Jan. 2019
  • last observed at 0208 UTC on 10 Jan. 2019 by Great Shefford Obs.
NotesNHATS target
Links  
2018 YU2   -   outbound
Approximate diameter18 meters (H=26.4)
Closest Earth approach5.60 LD at 0411 UTC on 12 Jan. 2019
Inside ten LD of Earth4 to 20 Jan. 2019
Data based onJPL SSD orbit solution #4 downloaded from JPL on 13 Jan. 2019 UTC
based on 33 observations spanning 2018-2019
Optical observation  
  • reported from 10 observing codes during 26.0156 days: 204, 474, 691, B49, F51, G96, I52, J95, K88, L01
  • first observed at 1358 UTC on 17 Dec. 2018 by Pan-STARRS 1
  • designation assigned to Mt. Lemmon Survey observation at 0927 UTC 31 Dec. 2018
  • last observed at 1421 UTC on 12 Jan. 2019 by Mt. John Obs.
NotesNHATS target
Links  
2018 YQ2   -     departed
Approximate diameter20 meters (H=26.1)
Closest Earth approach7.47 LD at 0006 UTC on 10 Jan. 2019
Inside ten LD of Earth4 to 15 Jan. 2019
Data based onJPL SSD orbit solution #5 downloaded from JPL on 9 Jan. 2019 UTC
based on 51 observations spanning 2018-2019
Optical observation  
  • reported from 12 observing codes during 8.9515 days: 104, 204, 291, 691, 807, F51, G96, I52, J04, J95, L01, T12
  • designation assigned to Mt. Lemmon Survey observation at 0347 UTC 31 Dec. 2018
  • last observed at 0237 UTC on 9 Jan. 2019 by the Spacewatch 1.8m telescope
Notesrisk, NHATS target
Links  
2018 YO2   -     departed intruder
Approximate diameter4 meters (H=29.7)
Closest Earth approach0.51 LD at 0626 UTC on 28 Dec. 2018
Inside Earth-Moon system0735 on 27 Dec. until 0517 UTC on 29 Dec. 2018
Inside Earth SOI25 to 30 Dec. 2018
Inside ten LD of Earth16 Dec. until 8 Jan. 2019
Closest Moon approach1.20 LD at 2039 UTC on 28 Dec. 2018
Data based onJPL SSD orbit solution #3 downloaded from JPL on 9 Jan. 2019 UTC
based on 19 observations spanning 2018-2019
Optical observation  
  • reported from 6 observing codes during 9.9001 days: 291, F51, I41, J95, L01, T12
  • designation assigned to Palomar Transient Factory observation at 1043 UTC 29 Dec. 2018
  • last observed at 0819 UTC on 8 Jan. 2019 by the Spacewatch 1.8m telescope
Notesrisk, NHATS 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 #7 downloaded from JPL on 15 Jan. 2019 UTC
based on 116 observations spanning 2018-2019
Optical observation  
  • reported from 21 observing codes during 22.2195 days: 104, 204, 587, 595, 703, B49, C77, F51, G40, H36, I52, J08, 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 1227 UTC on 15 Jan. 2019 by Steward Obs. Mt. Lemmon Station
Links  
2018 YA1   -     departed
Approximate diameter68 meters (H=23.5)
Closest Earth approach6.84 LD at 1230 UTC on 9 Dec. 2018 - Note: JPL reports an approach uncertainty of +/- 2 minutes
Inside ten LD of Earth3 to 15 Dec. 2018
Data based onJPL SSD orbit solution #7 downloaded from JPL on 17 Jan. 2019 UTC
based on 41 observations spanning 2018-2019
Optical observation  
  • reported from 7 observing codes during 28.9919 days: 291, 691, 703, C95, I52, K96, V06
  • designation assigned to Catalina Sky Survey observation at 0339 UTC 19 Dec. 2018
  • last observed at 0327 UTC on 17 Jan. 2019 by the Catalina Sky Survey Kuiper Telescope
NotesNHATS target
Links  
2018 XS4   -     departed
Approximate diameter29 meters (H=25.3)
Closest Earth approach2.76 LD at 0731 UTC on 16 Dec. 2018
Inside ten LD of Earth11 to 21 Dec. 2018
Data based onJPL SSD orbit solution #6 downloaded from JPL on 14 Jan. 2019 UTC
based on 75 observations spanning 2018-2019
Optical observation  
  • reported from 16 observing codes during 31.0260 days: 104, 204, 587, 619, 807, C95, F51, G40, H15, I52, J95, L01, P93, T05, T08, Z80
  • first observed at 0501 UTC on 13 Dec. 2018 by Pan-STARRS 1
  • designation assigned to ATLAS Mauna Loa observation at 0726 UTC 14 Dec. 2018
  • last observed at 0538 UTC on 13 Jan. 2019 by Robert Holmes via Cerro Tololo Inter-American Obs.
Links  
2018 XO4   -     departed
Approximate diameter30 meters (H=25.282)
Closest Earth approach7.82 LD at 2258 UTC on 6 Jan. 2019 - Note: JPL reports an approach uncertainty of +/- 17 minutes
Inside ten LD of Earth30 Dec. until 13 Jan. 2019
Data based onJPL SSD orbit solution #2 downloaded from JPL on 25 Dec. 2018 UTC
based on 13 observations spanning 12 days
Optical observation  
  • reported from 3 observing codes during 11.9041 days: 291, 568, F51
  • designation assigned to Pan-STARRS 1 observation at 0504 UTC 13 Dec. 2018
  • last observed at 0246 UTC on 25 Dec. 2018 by the Spacewatch 1.8m telescope
NotesNHATS target
Links  
2018 WV   -     departed
Approximate diameter27 meters (H=25.5)
Closest Earth approach2.97 LD at 1331 UTC on 16 Nov. 2018
Inside ten LD of Earth11 to 21 Nov. 2018
Data based onJPL SSD orbit solution #6 downloaded from JPL on 14 Jan. 2019 UTC
based on 97 observations spanning 2018-2019
Optical observation  
  • reported from 21 observing codes during 55.1734 days: 104, 160, 595, 658, 718, C77, C95, G96, H01, H21, H36, I52, J69, J95, K38, K63, L01, T12, W34, Z80, Z99
  • designation assigned to Mt. Lemmon Survey observation at 0730 UTC 18 Nov. 2018
  • last observed at 1140 UTC on 12 Jan. 2019 by UH/Tholen NEO Follow-Up 2.24m Telescope
Links  
2018 UC2   -     departed
Approximate diameter135 meters (H=22.)
Closest Earth approach9.42 LD at 0507 UTC on 23 Oct. 2018
Inside ten LD of Earth22 to 23 Oct. 2018
Data based onJPL SSD orbit solution #13 downloaded from JPL on 15 Jan. 2019 UTC
based on 226 observations spanning 2018-2019
Optical observation  
  • reported from 34 observing codes during 83.0158 days: 108, 160, 204, 585, 595, 718, 807, 932, A17, B04, C23, C77, C82, C95, H01, H21, I52, J69, J95, K30, K38, K51, L01, L06, P93, Q62, T05, T08, T12, U69, W25, W34, Z43, Z80
  • designation assigned to ATLAS Haleakala observation at 0728 UTC 21 Oct. 2018
  • last observed at 0751 UTC on 12 Jan. 2019 by UH/Tholen NEO Follow-Up 2.24m Telescope
Links  
2013 YM2   -     departed
Approximate diameter22 meters (H=25.9)
Closest Earth approach7.76 LD at 0128 UTC on 10 Jan. 2019
Inside ten LD of Earth3 to 16 Jan. 2019
Data based onJPL SSD orbit solution #8 downloaded from JPL on 11 Jan. 2019 UTC
based on 55 observations spanning 2013-2019
Optical observation  
  • reported from 3 observing codes during 4.1221 days: 104, 703, G96
  • first observed at 0942 UTC on 4 Jan. 2019 by the Catalina Sky Survey
  • last observed at 1238 UTC on 8 Jan. 2019 by the Catalina Sky Survey
NotesNHATS target
previous observation Dec.-Jan. 2014
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 #9 downloaded from JPL on 16 Jan. 2019 UTC
based on 53 observations spanning 2013-2019
Optical observation  
  • reported from 5 observing codes during 97.2005 days: 691, 703, F52, G96, 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 1315 UTC on 15 Jan. 2019 by the Spacewatch 0.9m telescope
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.