Contents on 5 May '20
- Radar Astrometry -- one object
- IAU Minor Planet Center
- NEOCP Activity -- 45 listings
- New MPECs -- four MPECs
- Observers -- 29 observers
- Impact Risk Monitoring -- five objects
- Chronology
Asteroid/Comet Connection (A/CC) Resources:
- Consolidated Risk Tables - the CRT page
Of 1131 risk-listed objects, 56 have had news in the last 31 days. Updated at 1632 UTC on 5 May.
- Earth's Busy Neighborhood traffic page
- Ephemerides for risk-listed objects & close passers
- News archive (old) & news image catalog (discontinued)
- Object Links - mainly for radar targets & close passers (mostly discontinued)
- Observing Campaigns (old)
The latest A/CC news is available via framed access, RSS news feed, or redirection.
Navigation tips: Use the << and >> arrows on the menus for each regular section (Observers, Risks, etc.) to move to the previous and next day's news for that section. Use the Index menu item to access specific days through a calendar interface. To keep track of what's new each day, watch the Chronology section.
Radar Astrometry on 5 May '20
Radar observation of one object
The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:
Data update noted at 1630 UTC when the database was dated 4 May
- 2020 DT3 from Arecibo (April 6.78 velocity, 6.80 range & 6.83 range)
Photometry and some astrometry is needed for upcoming radar targets. See Arecibo and Goldstone schedules.
NEOCP Activity on 5 May '20
The MPC's NEO Confirmation Page has 45 listings
When last checked at 2355 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 45 objects listed. Of these, 25 were "one nighters." So far The Tracking News has counted a total of 52 listings on the NEOCP today.
To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.
New MPECs on 5 May '20
Minor Planet Electronic Circulars
As of last check at 2355 UTC, there have been four MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2020-J38 time-stamped "11:49 UT" - 2020 JL - see below
- MPEC 2020-J39 time-stamped "12:04 UT" - Daily Orbit Update - see below
- MPEC 2020-J40 time-stamped "13:33 UT" - 2020 JM - see below
- MPEC 2020-J41 time-stamped "14:17 UT" - 2020 JN
MPEC 2020-J41 - "14:17 UT" - 2020 JN
- K20J00N 2020 JN (Earth MOID=0.5 LD, H=27.4 ~11m) was picked up at 0729 UT on 4 May by the Catalina Sky Survey (CSS), observing it at May 4.31-33p3. This detection was confirmed by Steward Obs. Mt. Lemmon Station (May 4.40p4), M. Suzuki via iTelescope Obs. Siding Spring (May 4.47p3), Visnjan Obs. (May 4.83p6), Schiaparelli Obs. (May 4.86-89p7), Great Shefford Obs. (May 4.87-93p7), GiaGa Obs. (May 4.90-91p4), Pascoli Obs. (May 4.91p2), and Tebbutt Obs. (May 5.13-17p5).
MPEC 2020-J40 - "13:33 UT" - 2020 JM
- K20J00M 2020 JM (small asteroid, Earth MOID=9.8 LD, H=25.9 ~22m) was picked up at 0836 UT on 3 May by the Mt. Lemmon Survey (MLS), observing it at May 3.36-37p4. This detection was confirmed by Steward Mt. Lemmon Sta. (May 3.43p4 & 5.36-37p4), Visnjan Obs. (May 3.98-99p4), Schiaparelli Obs. (May 4.07-09p2), and Pomona College Table Mtn. Obs. (PCTMO) (May 4.40-47p3).
<< DOU on 5 May '20 >> MPEC 2020-J39 - "12:04 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K20H06L 2020 HL6 (small asteroid, arc=16 days, H=28.0 ~9m, close passer, NHATS target) from Steward Mt. Lemmon Sta. (May 5.26p4)
- K20C02F 2020 CF2 (small asteroid, arc=40 days, H=27.6 ~10m, close passer, NHATS target) from SATINO-1 (Feb. 18.17-18p2)
- K18U00L 2018 UL (small asteroid, arc=23 days, H=29.2 ~5m, close passer, NHATS target) from UH/Tholen NEO Follow-Up 2.24m Telescope (2018 Nov. 2.44p1 at G=23.83, 2018 Nov. 6.43-45p3 at G=24.13-71 & 2018 Nov. 10.55p1 at G=25.15)
- Observations of close-passing objects
- K20J00J 2020 JJ (arc=0 days, H=30.0 ~3m) from Astronomical Research Obs. Westfield (May 4.33p4)
- K20J00A 2020 JA (Q=5.611 AU, arc=2 days, H=27.2 ~12m) from Hidetaka Sato via iTelescope Obs. Mayhill (May 3.30p3)
- K20H07T 2020 HT7 (arc=8 days, H=26.9 ~14m, NHATS target) from ATLAS Haleakala (April 22.35-37p4)
- K20H06B 2020 HB6 (arc=11 days, H=24.2 ~49m, NHATS target) from GiaGa Obs. (May 4.84-86p3)
- K16H06P 2016 HP6 (arc=3 opp, H=25.4 ~28m, NHATS target) from GiaGa Obs. (May 4.87-88p3)
- K14J25O 2014 JO25 (q=0.234 AU, arc=5 opp, H=17.8 ~933m, radar support) from CSS (May 4.28-29p4) and ATLAS Haleakala (May 4.41-46p4)
- c8945 388945 2008 TZ3 from Pin Oak Obs. (May 4.16-26p13) and program code 1 via Kuban State Univ. Obs. (May 4.77-83p14)
- Observation campaigns (NHATS targets, radar support)
- K20H06T 2020 HT6 (arc=13 days, H=24.7 ~39m, NHATS) from MLS (May 4.39-40p4) and Steward Mt. Lemmon Sta. (May 5.47-48p4 at G=21.8-22.5)
- K20H01S 2020 HS1 (arc=18 days, H=25.8 ~23m, NHATS) from Steward Mt. Lemmon Sta. (May 5.45-46p3)
- 02102 2102 Tantalus (1975 YA) (radar) from Pan-STARRS 2 (PS2) (May 4.58-60p3) and ATLAS Mauna Loa (May 4.59-61p3)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone - Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
- K20J00B 2020 JB (arc=3 days, H=23.4 ~71m) from PS2 (May 4.47-51p4)
- K20H10C 2020 HC10 (arc=6 days, H=22.2 ~123m) from Steward Mt. Lemmon Sta. (May 5.46p2)
- K20H01V 2020 HV1 (arc=16 days, H=22.5 ~107m) from Pan-STARRS 1 (PS1) (May 4.49-51p3)
- K20F07A 2020 FA7 (arc=50 days, H=22.3 ~117m) from M57 Obs. (May 4.96-02p3)
- K20F02O 2020 FO2 (arc=100 days, H=22.4 ~112m) from MLS (May 4.26-28p4)
- K10J03J 2010 JJ3 (arc=2 opp, H=23.7 ~62m) from CSS (May 4.25-27p3)
- K02X40Q 2002 XQ40 (arc=5 opp, H=22.3 ~117m) from CSS (May 4.28-29p3)
- K00H40O 2000 HO40 (q=0.360 AU, arc=3 opp, H=22.2 ~123m) from CSS (May 4.28-29p2) and ATLAS Haleakala (May 4.30-32p4)
- K20J00H 2020 JH (arc=2 days, H=22.0 ~135m) from PCTMO (May 4.25-26p2, 4.31p1 & 4.37p1), ATLAS Mauna Loa (May 4.32-34p4), and Dave Balam via Plaskett 1.8m Telescope (May 4.33-34p3)
- Observations of other objects
- K20J00D 2020 JD (arc=3 days, H=20.0 ~339m) from Balam/Plaskett (May 4.29-30p5) and PS2 (May 4.33-34p2)
- K20H10B 2020 HB10 (Q=4.504 AU, arc=6 days, H=20.6 ~257m) from MLS (May 4.26-28p4)
- K20H09W 2020 HW9 (q=0.328 AU, arc=6 days, H=19.2 ~490m) from PS2 (May 4.36-40p3)
- K20H08O 2020 HO8 (arc=9 days, H=21.4 ~178m) from Steward Mt. Lemmon Sta. (May 5.21p4)
- K20H06H 2020 HH6 (arc=23 days, H=21.7 ~155m) from MLS (May 4.35-36p8) and Steward Mt. Lemmon Sta. (May 5.27-28p4)
- K20G02D 2020 GD2 (arc=184 days, H=20.5 ~269m) from CSS (May 4.28-29p3)
- K20F06B 2020 FB6 (arc=40 days, H=20.8 ~234m) from Castelmartini Obs. (May 3.99p3), ATLAS Mauna Loa (May 4.46-49p4), and PS2 (May 4.47-49p3)
- K20F03W 2020 FW3 (arc=44 days, H=21.3 ~186m) from CSS (May 4.31-33p3)
- K20B12Z 2020 BZ12 (i=165.5°, Q=14.803 AU, arc=60 days, H=18.2 ~776m) from Sato/iTelObs-Mayhill (March 20.10-11p3)
- K20B05O 2020 BO5 (arc=105 days, H=21.0 ~214m) from ATLAS Haleakala (May 4.36-41p8)
- K18T01O 2018 TO1 (arc=4 opp, H=21.7 ~155m) from PS1 (May 4.59-61p4)
- K17M00E 2017 ME (i=41.4°, arc=3 opp, H=17.9 ~891m) from Castelmartini Obs. (May 4.07-08p3)
- K15TE3X 2015 TX143 (arc=6 opp, H=19.8 ~371m) from ATLAS Mauna Loa (May 4.32-35p4)
- K06U63D 2006 UD63 (arc=4 opp, H=18.8 ~589m) from the Zwicky Transient Facility (ZTF) (May 1.44p2, 4.36p1 & 4.44p1)
- K02V85R 2002 VR85 (arc=3 opp, H=20.4 ~282m) from Castelmartini Obs. (May 4.02p3)
- q2684 522684 2016 JP from Castelmartini Obs. (May 3.96-97p3) and CSS (May 4.38-40p4)
- o0094 500094 2012 BC20 from PS1 (May 4.28-31p4)
- n8066 498066 2007 RM133 from Castelmartini Obs. (May 4.00-01p3)
- h6324 436324 2010 GZ6 from ZTF (May 2.22-23p2 & 2.30p2)
- h6030 436030 2009 JO2 from Castelmartini Obs. (May 3.98-99p3), CSS (May 4.41-42p4), ATLAS Mauna Loa (May 4.46-47p4), and PS2 (May 4.46-50p4)
- h3992 433992 2000 HD74 from Castelmartini Obs. (May 3.95-96p3) and CSS (May 4.38-40p4)
- h0439 430439 2000 LF6 from MLS (May 4.22-24p3)
- g8086 428086 2006 NM from ATLAS Haleakala (May 4.57-59p4)
- Y9063 349063 2006 XA from ATLAS Haleakala (May 4.60-62p3)
- V3809 313809 2004 BH41 from PS1 (May 4.33-36p3)
- N1792 231792 2000 DH8 from Purple Mtn. Obs. Xuyi Station (May 3.78-80p2)
- L9021 219021 1991 LH from PS2 (May 4.58-60p3)
- I7026 187026 2005 EK70 from MLS (May 4.13-14p3)
- I6822 186822 2004 FE31 from CSS (May 4.27p1)
- I4990 184990 2006 KE89 from Castelmartini Obs. (May 4.03p3), MLS (May 4.41-42p4), and ATLAS Mauna Loa (May 4.47-50p4)
- H5189 175189 2005 EC224 from Pin Oak Obs. (May 4.24-29p4)
- G9675 169675 2002 JM97 from ATLAS Haleakala (May 4.50-51p3)
- G3243 163243 2002 FB3 from CSS (May 4.15-17p4)
- G2195 162195 1999 RK45 from PS1 (May 4.61p1)
- E5656 145656 4788 P-L from CSS (May 4.45-46p4)
- E4861 144861 2004 LA12 from MLS (May 4.24-26p4)
- D8847 138847 2000 VE62 from Pin Oak Obs. (May 4.10p1 & 4.15p1)
- D7199 137199 1999 KX4 from Xuyi Sta. (May 3.69-71p3)
- D7170 137170 1999 HF1 from ATLAS Mauna Loa (May 4.58-61p4)
- D6874 136874 1998 FH74 from Castelmartini Obs. (May 3.97-98p3) and CSS (May 4.40-42p4)
- B5052 115052 2003 RD6 from PS2 (May 5.31-35p4)
- A8906 108906 2001 PL9 from MLS (May 4.13-15p4)
- 99935 99935 2002 AV4 from Pin Oak Obs. (May 4.17-20p3) and ATLAS Haleakala (May 4.30-32p4)
- 90075 90075 2002 VU94 from ATLAS Mauna Loa (May 4.24-25p3)
- 86067 86067 1999 RM28 from MLS (May 4.24-26p4)
- 85628 85628 1998 KV2 from Castelmartini Obs. (May 3.94p3)
- 85275 85275 1994 LY from Castelmartini Obs. (May 4.03-04p3) and ATLAS Mauna Loa (May 4.48-49p3)
- 68350 68350 2001 MK3 from MPC code L64 (May 3.87p1), Castelmartini Obs. (May 3.95p3), ZTF (May 4.26p1 & 4.33-35p2), MLS (May 4.35-37p4), PS2 (May 4.42-45p4), and ATLAS Mauna Loa (May 4.43-45p4)
- 54401 54401 2000 LM from CSS (May 4.27-28p4) and ATLAS Haleakala (May 4.42-46p4)
- 40267 40267 1999 GJ4 from ATLAS Mauna Loa (May 4.24-26p4)
- 36183 36183 1999 TX16 from MASTER-II Sutherland (May 3.82-84p2) and ATLAS Haleakala (May 4.47-48p4)
- 19764 19764 2000 NF5 from ATLAS Haleakala (May 4.56-57p3)
- 11284 11284 Belenus (1990 BA) from ATLAS Haleakala (May 4.43-44p4)
- 09400 9400 1994 TW1 from ZTF (May 4.15p2 & 4.20p2)
- 08566 8566 1996 EN from MLS (May 4.17-18p4) and ATLAS Mauna Loa (May 4.27-32p4)
- 08014 8014 1990 MF from ATLAS Haleakala (May 4.47-48p4)
- 05751 5751 Zao (1992 AC) from PS1 (May 4.59-61p8)
- 04257 4257 Ubasti (1987 QA) from MLS (May 4.39-40p4)
- 04055 4055 Magellan (1985 DO2) from ATLAS Mauna Loa (May 4.56-58p3) and PS2 (May 4.58-60p4)
- 03288 3288 Seleucus (1982 DV) from CSS (May 4.47-48p4)
- 03103 3103 Eger (1982 BB) from ZTF (May 3.15-16p3)
- 01917 1917 Cuyo (1968 AA) from CSS (May 4.34-35p3)
- 01864 1864 Daedalus (1971 FA) from CSS (May 4.22-24p3)
- 01685 1685 Toro (1948 OA) from ATLAS Haleakala (May 4.55-57p4)
- 01627 1627 Ivar (1929 SH) from Pin Oak Obs. (May 4.09-14p3) and ATLAS Mauna Loa (May 4.24-26p4)
MPEC 2020-J38 - "11:49 UT" - 2020 JL
- K20J00L 2020 JL (small asteroid, i=65.7°, Q=4.173 AU, H=22.9 ~89m) was picked up at 0634 UT on 2 May by MLS, observing it at May 2.27-29p4 and 3.33p4. This detection was confirmed by PS1 (April 30.47-51p3, May 1.47-48p3 & 2.39p1), Steward Mt. Lemmon Sta. (May 2.38-39p4), Visnjan Obs. (May 3.94-95p3), and PCTMO (May 4.32p1 & 4.38-42p2).
Observers on 5 May '20
A total of 29 observers appear in today's MPECs.
Code | Observer / observatory |
---|---|
251 | Arecibo in Puerto Rico, 1 in radar -- 2020 DT3 |
H21 | Astronomical Research Obs. Westfield in Illinois, 1 in MPEC 2020-J39 -- 2020 JJ |
T05 | ATLAS Haleakala in Hawaii, 14 in MPEC 2020-J39 -- 2020 HT7, 2020 BO5, 2014 JO25, 2000 HO40, 99935, 54401, 428086, 36183, 349063, 19764, 169675, 11284, 8014, 1685 |
T08 | ATLAS Mauna Loa in Hawaii, 14 in MPEC 2020-J39 -- 2020 JH, 2020 FB6, 2015 TX143, 90075, 85275, 68350, 436030, 40267, 184990, 137170, 8566, 4055, 2102, 1627 |
160 | Castelmartini Obs. in Italy, 12 in MPEC 2020-J39 -- 2020 FB6, 2017 ME, 2002 VR85, 85628, 85275, 68350, 522684, 498066, 436030, 433992, 184990, 136874 |
703 | Catalina Sky Survey (CSS) in Arizona, 18 in MPECs 2020-J39 & 2020-J41 -- 2020 JN, 2020 GD2, 2020 FW3, 2014 JO25, 2010 JJ3, 2002 XQ40, 2000 HO40, 54401, 522684, 436030, 433992, 186822, 163243, 145656, 136874, 3288, 1917, 1864 |
203 | GiaGa Obs. in Italy, 3 in MPECs 2020-J39 & 2020-J41 -- 2020 JN, 2020 HB6, 2016 HP6 |
J95 | Great Shefford Obs. in England, 1 in MPEC 2020-J41 -- 2020 JN |
H06| | Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 2 in MPEC 2020-J39 -- 2020 JA, 2020 BZ12 |
Q62[ | M. Suzuki in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-J41 -- 2020 JN |
C401 | program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-J39 -- 388945 |
K38 | M57 Obs. in Italy, 1 in MPEC 2020-J39 -- 2020 FA7 |
K95 | MASTER-II Sutherland in South Africa, 1 in MPEC 2020-J39 -- 36183 |
L64 | MPC code L64, 1 in MPEC 2020-J39 -- 68350 |
G96 | Mt. Lemmon Survey (MLS) in Arizona, 15 in MPECs 2020-J38, 2020-J39 & 2020-J40 -- 2020 JM, 2020 JL, 2020 HT6, 2020 HH6, 2020 HB10, 2020 FO2, 86067, 68350, 430439, 187026, 184990, 144861, 108906, 8566, 4257 |
F51 | Pan-STARRS 1 (PS1) in Hawaii, 7 in MPECs 2020-J38 & 2020-J39 -- 2020 JL, 2020 HV1, 2018 TO1, 500094, 313809, 162195, 5751 |
F52 | Pan-STARRS 2 (PS2) in Hawaii, 10 in MPEC 2020-J39 -- 2020 JD, 2020 JB, 2020 HW9, 2020 FB6, 68350, 436030, 219021, 115052, 4055, 2102 |
K63 | Pascoli Obs. in Italy, 1 in MPEC 2020-J41 -- 2020 JN |
V93 | Pin Oak Obs., 5 in MPEC 2020-J39 -- 99935, 388945, 175189, 138847, 1627 |
6581 | Dave Balam via Plaskett 1.8m Telescope in British Columbia, 2 in MPEC 2020-J39 -- 2020 JH, 2020 JD |
654 | Pomona College Table Mtn. Obs. (PCTMO) in southern California, 3 in MPECs 2020-J38, 2020-J39 & 2020-J40 -- 2020 JM, 2020 JL, 2020 JH |
D29 | Purple Mtn. Obs. Xuyi Station in China, 2 in MPEC 2020-J39 -- 231792, 137199 |
C95 | SATINO-1 in France, 1 in MPEC 2020-J39 -- 2020 CF2 |
204 | Schiaparelli Obs. in Italy, 2 in MPECs 2020-J40 & 2020-J41 -- 2020 JN, 2020 JM |
I52 | Steward Obs. Mt. Lemmon Station in Arizona, 9 in MPECs 2020-J38, 2020-J39, 2020-J40 & 2020-J41 -- 2020 JN, 2020 JM, 2020 JL, 2020 HT6, 2020 HS1, 2020 HO8, 2020 HL6, 2020 HH6, 2020 HC10 |
858 | Tebbutt Obs. in New Mexico, 1 in MPEC 2020-J41 -- 2020 JN |
T12 | UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-J39 -- 2018 UL |
L01 | Visnjan Obs. in Croatia, 3 in MPECs 2020-J38, 2020-J40 & 2020-J41 -- 2020 JN, 2020 JM, 2020 JL |
I41 | Zwicky Transient Facility (ZTF) in southern California, 5 in MPEC 2020-J39 -- 2006 UD63, 68350, 436324, 9400, 3103 |
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page. |
Impact Risk Monitoring on 5 May '20
0000NNN000 Object | Risk Monitor | When Noted UTC | 0000T0000 Year Range | VI # | 000NN00 Prob Cum | T0000 PS Cum | T0000 PS Max | T S | Notes for Today's Latest Risk Assessments |
2020 JK | NEODyS | 1630 | 2057-2118 | 67 | 1.01e-05 | -4.63 | -5.51 | 0 | NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2020-05-02.381 to 2020-05-04.027." |
2020 HL6 | JPL Sentry | 1630 | 2103-2103 | 1 | 2.023e-07 | -8.55 | -8.55 | 0 | JPL: Computed at 06:47 today Pacific time based on 44 observations spanning 15.819 days (2020-Apr-19.44533 to 2020-May-05.26466). Diameter approximately 0.009 km. from weighted mean H=27.99. |
NEODyS | 1630 | 2101-2103 | 2 | 2.33e-07 | -8.49 | -8.51 | 0 | NEODyS: "Based on 44 optical observations (of which 0 are rejected as outliers) from 2020-04-19.446 to 2020-05-05.265." | |
2020 CF2 | JPL Sentry | 1630 | 2072-2116 | 9 | 6.730841e-06 | -6.89 | -7.19 | 0 | JPL: Computed at 06:55 today Pacific time based on 101 observations spanning 40.114 days (2020-Feb-13.349028 to 2020-Mar-24.462702). Diameter approximately 0.010 km. from weighted mean H=27.59. |
NEODyS | 1630 | 2096-2117 | 18 | 6.17e-06 | -6.95 | -7.37 | 0 | NEODyS: "Based on 106 optical observations (of which 6 are rejected as outliers) from 2020-02-13.349 to 2020-03-24.464." | |
2018 UL | JPL Sentry | 1630 | R E M O V E D | JPL: Risk listing removed at 1347 UTC today | |||||
2017 AE21 | JPL Sentry | 1630 | 2021-2117 | 96 | 4.6395967e-06 | -4.73 | -5.22 | 0 | JPL: Computed at 21:08 April 8th of 2017 Pacific time based on 5 observations spanning 1.0383 days (2017-Jan-03.52485 to 2017-Jan-04.563112). Diameter approximately 0.033 km. from weighted mean H=25.03. |
Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale (next 100 years)
An impact solution, also known as a "virtual impactor" (VI), is not a prediction but rather a possibility derived from a variant orbit calculation that cannot be eliminated yet based on the existing data. Elimination can come quickly with just a little further observation or may take weeks or months, sometimes years. Once superceded or eliminated, a former impact solution has zero relevance to an object's risk. See Jon Giorgini's "Understanding Risk Pages" to learn more.
Chronology on 5 May '20
Times are UTC for when items were noted or added by The Tracking News.
1630 | Noted that JPL Sentry has updated its 2017 AE21 risk assessment - see above Noted that JPL Sentry has removed 2018 UL as an impact risk - see above Noted that JPL Sentry has updated its 2020 CF2 risk assessment - see above Noted that NEODyS has updated its 2020 CF2 risk assessment - see above Noted that JPL Sentry has updated its 2020 HL6 risk assessment - see above Noted that NEODyS has updated its 2020 HL6 risk assessment - see above Noted that NEODyS has posted 2020 JK as an impact risk - see above Grabbed MPEC 2020-J38 - 2020 JL - see above Grabbed MPEC 2020-J39 - Daily Orbit Update - see above Grabbed MPEC 2020-J40 - 2020 JM - see above Grabbed MPEC 2020-J41 - 2020 JN - see above Noted Radar Astrometry database update - see above |