Contents on 17 March '20
- IAU Minor Planet Center
- NEOCP Activity -- 42 listings
- New MPECs -- 23 MPECs
- Observers -- 50 observers
- Impact Risk Monitoring -- four objects
- Chronology
Asteroid/Comet Connection (A/CC) Resources:
- Consolidated Risk Tables - the CRT page
Of 1098 risk-listed objects, 50 have had news in the last 31 days. Updated at 1601 UTC on 17 March.
- 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.
NEOCP Activity on 17 March '20
The MPC's NEO Confirmation Page has 42 listings
When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 42 objects listed. Of these, thirteen were "one nighters." So far The Tracking News has counted a total of 65 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 17 March '20
Minor Planet Electronic Circulars
As of last check at 2358 UTC, there have been 23 MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2020-F07 time-stamped "00:42 UT" - 2020 FB - see below
- MPEC 2020-F08 time-stamped "00:43 UT" - 2020 FC - see below
- MPEC 2020-F09 time-stamped "00:45 UT" - 2020 ES - see below
- MPEC 2020-F10 time-stamped "00:46 UT" - 2020 ET - see below
- MPEC 2020-F11 time-stamped "00:47 UT" - 2020 EU - see below
- MPEC 2020-F12 time-stamped "12:03 UT" - Daily Orbit Update - see below
- MPEC 2020-F13 time-stamped "13:23 UT" - 2020 FD - see below
- MPEC 2020-F14 time-stamped "13:24 UT" - 2020 EV - see below
- MPEC 2020-F15 time-stamped "13:27 UT" - 2020 FE - see below
- MPEC 2020-F16 time-stamped "13:30 UT" - 2020 FF - see below
- MPEC 2020-F17 time-stamped "13:32 UT" - 2020 FG - see below
- MPEC 2020-F18 time-stamped "13:34 UT" - 2020 FH - see below
- MPEC 2020-F19 time-stamped "21:23 UT" - 2020 FK - see below
- MPEC 2020-F20 time-stamped "21:25 UT" - 2020 FL - see below
- MPEC 2020-F21 time-stamped "21:27 UT" - 2020 FM - see below
- MPEC 2020-F22 time-stamped "21:29 UT" - 2020 FN - see below
- MPEC 2020-F23 time-stamped "21:52 UT" - 2020 FO - see below
- MPEC 2020-F24 time-stamped "22:08 UT" - 2020 FP - see below
- MPEC 2020-F25 time-stamped "22:11 UT" - 2020 FQ - see below
- MPEC 2020-F26 time-stamped "22:31 UT" - 2020 FR - see below
- MPEC 2020-F27 time-stamped "22:37 UT" - 2020 FS - see below
- MPEC 2020-F28 time-stamped "22:52 UT" - 2020 FT - see below
- MPEC 2020-F29 time-stamped "22:53 UT" - 2020 FU
MPEC 2020-F29 - "22:53 UT" - 2020 FU
- K20F00U 2020 FU (small asteroid, H=26.4 ~18m) was picked up at 1050 UT on 16 March by the Mt. Lemmon Survey (MLS), observing it at March 16.45-47p4. This detection was confirmed by Steward Obs. Mt. Lemmon Station (March 16.50p3), Visnjan Obs. (March 16.94p7), Great Shefford Obs. (March 16.95p2), KLENOT (March 16.98p8), Schiaparelli Obs. (March 17.06p2), Mt. John Obs. (March 17.42-43p6 & 17.58p4), and Schwarzschild Obs. (March 17.90p3).
MPEC 2020-F28 - "22:52 UT" - 2020 FT
- K20F00T 2020 FT (small asteroid, Earth MOID=7.1 LD, H=24.4 ~45m) was picked up at 0846 UT on 16 March by the Catalina Sky Survey (CSS), observing it at March 16.37-38p3 and 16.45p3. This detection was confirmed by Schwarzschild Obs. (March 16.87p3 & 17.81p4), Pascoli Obs. (March 16.98-99p3), KLENOT (March 16.99p6), Visnjan Obs. (March 17.05p3), Schiaparelli Obs. (March 17.08-09p3), Steward Mt. Lemmon Sta. (March 17.42p4), and Rokycany Obs. (March 17.85p3).
MPEC 2020-F27 - "22:37 UT" - 2020 FS
- K20F00S 2020 FS (small asteroid, Earth MOID=7.7 LD, H=27.8 ~9m) was picked up at 0405 UT on 16 March by MLS, observing it at March 16.17-19p4. This detection was confirmed by Steward Mt. Lemmon Sta. (March 16.27-28p3), Visnjan Obs. (March 16.82-83p4), Schwarzschild Obs. (March 16.91p3 & 17.92-93p4), Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (March 17.07-08p3), and Mt. John Obs. (March 17.40p4).
MPEC 2020-F26 - "22:31 UT" - 2020 FR
- K20F00R 2020 FR (small asteroid, Q=4.185 AU, Earth MOID=5.1 LD, H=26.1 ~20m) was picked up at 0913 UT on 16 March by MLS, observing it at March 16.38-45p8. This detection was confirmed by Visnjan Obs. (March 16.94p3), Schwarzschild Obs. (March 16.95-96p3 & 17.92p3), the Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) (March 17.34-35p4), and Mt. John Obs. (March 17.48-49p4).
MPEC 2020-F25 - "22:11 UT" - 2020 FQ
- K20F00Q 2020 FQ (small asteroid, H=27.3 ~12m) was picked up at 0613 UT on 16 March by MLS, observing it at March 16.26-28p4. This detection was confirmed by Steward Mt. Lemmon Sta. (March 16.44p4 & 17.22-23p4), Schwarzschild Obs. (March 16.89p3 & 17.91p3), and Visnjan Obs. (March 16.90p3).
MPEC 2020-F24 - "22:08 UT" - 2020 FP
- K20F00P 2020 FP (small asteroid, Earth MOID=8.7 LD, H=25.9 ~22m) was picked up at 0751 UT on 16 March by MLS, observing it at March 16.33-34p4 and 16.49p3. This detection was confirmed by Schwarzschild Obs. (March 16.90p3 & 17.90-91p4), Visnjan Obs. (March 16.98p4), and Holmes/CTIO (March 17.24p3).
MPEC 2020-F23 - "21:52 UT" - 2020 FO
- K20F00O 2020 FO (small asteroid, H=25.9 ~22m) was picked up at 0750 UT on 16 March by MLS, observing it at March 16.33-34p4 and 16.42p3. This detection was confirmed by Schwarzschild Obs. (March 16.86p3 & 17.90p3), Great Shefford Obs. (March 16.87-88p2), Visnjan Obs. (March 16.95p3), KLENOT (March 16.95p5), and Steward Mt. Lemmon Sta. (March 17.13-14p4).
MPEC 2020-F22 - "21:29 UT" - 2020 FN
- K20F00N 2020 FN (small asteroid, Earth MOID=4.2 LD, H=27.6 ~10m) was picked up at 0230 UT on 16 March by MLS, observing it at March 16.10-12p4. This detection was confirmed by Steward Mt. Lemmon Sta. (March 16.17p4 & 16.27p3), Schwarzschild Obs. (March 16.78p3 & 17.80p3), Visnjan Obs. (March 16.79p5), Schiaparelli Obs. (March 16.89-91p3), KLENOT (March 16.93p6), Holmes/CTIO (March 17.06-07p4), Drebach Obs. (March 17.80-81p4), ROASTERR-1 (March 17.82-83p2), and Rokycany Obs. (March 17.83p3).
MPEC 2020-F21 - "21:27 UT" - 2020 FM
- K20F00M 2020 FM (small asteroid, Earth MOID=8.7 LD, H=24.0 ~54m) was picked up at 0544 UT on 16 March by CSS, observing it at March 16.24-25p3. This detection was confirmed by Steward Mt. Lemmon Sta. (March 16.29p4 & 17.11p4), Schwarzschild Obs. (March 16.77p3, 16.86p3 & 17.78p3), Visnjan Obs. (March 16.77-78p5), KLENOT (March 16.78p3), Schiaparelli Obs. (March 16.81-83p3), Castelmartini Obs. (March 16.90-91p5), Pascoli Obs. (March 16.93-94p3), and Rokycany Obs. (March 17.88p4).
MPEC 2020-F20 - "21:25 UT" - 2020 FL
- K20F00L 2020 FL (small asteroid, Earth MOID=1.1 LD, H=24.8 ~37m) was picked up at 0542 UT on 16 March by CSS, observing it at March 16.24-25p4. This detection was confirmed by Steward Mt. Lemmon Sta. (March 16.28p4 & 17.11p4), ROASTERR-1 (March 16.74-77p4), KLENOT (March 16.76-77p13), Visnjan Obs. (March 16.76p5), Schwarzschild Obs. (March 16.76-77p3, 16.85-86p3 & 17.76-77p5), QOS Obs. (March 16.77p3), Schiaparelli Obs. (March 16.79-80p5), Great Shefford Obs. (March 16.80p4), Nonndorf Obs. (March 16.83-84p5), Oberfrauendorf Obs. (March 16.86p3), Northolt Branch Obs. (March 16.87-88p4), North Obs. (March 16.92-93p6), and Dettelbach Vineyard Obs. (March 17.81-82p3).
MPEC 2020-F19 - "21:23 UT" - 2020 FK
- K20F00K 2020 FK (small asteroid, Earth MOID=3.4 LD, H=28.3 ~7m) was picked up at 0817 UT on 16 March by MLS, observing it at March 16.35-36p4 at G=20.9-22.2 and 16.41p3 at G=20.8-21.4. This detection was confirmed by Schwarzschild Obs. (March 16.99p3), Holmes/CTIO (March 17.20-21p3), Mt. John Obs. (March 17.43-44p4), and Visnjan Obs. (March 17.85-86p4).
MPEC 2020-F18 - "13:34 UT" - 2020 FH
- K20F00H 2020 FH (Earth MOID=5.9 LD, H=26.1 ~20m) was picked up at 0648 UT on 16 March by CSS, observing it at March 16.28-29p3. This detection was confirmed by Steward Mt. Lemmon Sta. (March 16.42p4 & 17.11p4), Schwarzschild Obs. (March 16.77p3), KLENOT (March 16.77p13), ROASTERR-1 (March 16.78-79p3), Visnjan Obs. (March 16.80p6), Nonndorf Obs. (March 16.85-86p8), Northolt Branch Obs. (March 16.89-90p3), Schiaparelli Obs. (March 16.92-93p3), Great Shefford Obs. (March 16.96-97p4), Pascoli Obs. (March 16.96-97p3), North Obs. (March 16.97-98p5), Galilei Obs. (March 16.98-99p3), and M57 Obs. (March 17.06-08p4).
MPEC 2020-F17 - "13:32 UT" - 2020 FG
- K20F00G 2020 FG (risk listed, Earth MOID=0.9 LD, H=27.9 ~9m, close passer) was picked up at 0535 UT on 16 March by MLS, observing it at March 16.23-25p4. This detection was confirmed by Steward Mt. Lemmon Sta. (March 16.35-36p4 & 17.14p3), Visnjan Obs. (March 16.83-84p4), Schwarzschild Obs. (March 16.88p2), Schiaparelli Obs. (March 16.99-01p2), Galilei Obs. (March 17.08-09p3), Holmes/CTIO (March 17.12-13p4), and Mt. John Obs. (March 17.39p4 & 17.53p4).
MPEC 2020-F16 - "13:30 UT" - 2020 FF
- K20F00F 2020 FF (small asteroid, H=26.8 ~15m) was picked up at 0752 UT on 16 March by MLS, observing it at March 16.33-34p4 and 16.47p3. This detection was confirmed by Pan-STARRS 1 (PS1) (March 14.34-36p2), Schwarzschild Obs. (March 16.89-90p3), and Visnjan Obs. (March 16.97p3).
MPEC 2020-F15 - "13:27 UT" - 2020 FE
- K20F00E 2020 FE (small asteroid, Earth MOID=1.9 LD, H=22.5 ~107m) was picked up at 0434 UT on 16 March by MLS, observing it at March 16.19-21p4. This detection was confirmed by PS1 (March 14.34-36p2), Steward Mt. Lemmon Sta. (March 16.29p3 & 17.14p4), Schwarzschild Obs. (March 16.79-80p3), Visnjan Obs. (March 16.86p3), and Schiaparelli Obs. (March 16.95-98p2).
MPEC 2020-F14 - "13:24 UT" - 2020 EV
- K20E00V 2020 EV (small asteroid, i=39.3°, H=22.3 ~117m) was picked up at 0722 UT on 15 March by MLS, observing it at March 15.31-32p4 and 15.45p4. This detection was confirmed by Steward Mt. Lemmon Sta. (March 15.36p4, 16.17p4 & 17.15p4), Visnjan Obs. (March 15.77-78p7), ROASTERR-1 (March 15.81-82p3), Castelmartini Obs. (March 15.89-90p7), Pascoli Obs. (March 15.90-91p3), Clixby Obs. (March 15.92p3), SATINO-1 (March 15.97-02p4), Dettelbach Vineyard Obs. (March 15.98-01p3), Great Shefford Obs. (March 16.03-04p4), CSS (March 16.32-34p4), Schwarzschild Obs. (March 16.77-78p4 & 17.01p3), KLENOT (March 16.94p6), and Schiaparelli Obs. (March 17.14-15p3).
MPEC 2020-F13 - "13:23 UT" - 2020 FD
- K20F00D 2020 FD (risk listed, Earth MOID=0.0 LD, H=27.7 ~10m, close passer) was picked up at 1051 UT on 16 March by MLS, observing it at March 16.45-47p4. This detection was confirmed by Steward Mt. Lemmon Sta. (March 16.50-52p9), the Spacewatch 1.8m telescope (March 16.53p3), Xingming Obs. (March 16.77-78p10), ROASTERR-1 (March 16.89-90p3), Schwarzschild Obs. (March 16.90p3 & 17.02p3), Northolt Branch Obs. (March 16.94-95p3), Crni Vrh Obs. (March 16.95-96p6), KLENOT (March 16.98-99p10), Castelmartini Obs. (March 17.00-01p7), Great Shefford Obs. (March 17.02p4), Visnjan Obs. (March 17.03p3), Schiaparelli Obs. (March 17.04-05p3), Pascoli Obs. (March 17.04p3), Galilei Obs. (March 17.04-05p3), North Obs. (March 17.05-06p3), CSS-Kuiper (March 17.35p4), and Mt. John Obs. (March 17.51-52p5).
<< DOU on 17 March '20 >> MPEC 2020-F12 - "12:03 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K20E00T 2020 ET (small asteroid, arc=2 days, H=25.8 ~23m, close passer) from North Obs. (March 17.01-02p4) and Great Shefford Obs. (March 17.03p4)
- Observations of recently (no longer) risk-listed objects
- K20D04P 2020 DP4 (small asteroid, arc=19 days, H=25.2 ~31m, close passer, NHATS target) from Northolt Branch Obs. (March 16.13-15p3), W.F. Cashwell via Slooh.com Chile Obs. (March 16.30-34p3), MLS (March 16.45-47p4), and KLENOT (March 17.01p9)
- Observations of close-passing objects
- K20F00B 2020 FB (arc=1 day, H=25.2 ~31m, NHATS target) from Schwarzschild Obs. (March 17.01p3) and Modra Obs. (March 17.02-04p3)
- K20B10W 2020 BW10 (arc=27 days, H=25.5 ~27m) from Astronomical Research Obs. Westfield (Feb. 22.27-29p3 at V=22.0-22.3)
- K19W02N 2019 WN2 (arc=93 days, H=27.6 ~10m, NHATS target) from Pan-STARRS 2 (PS2) (2019 Oct. 24.44-47p3 at G=22.0-22.4, 2019 Oct. 29.41-42p2 at G=22.0-22.2 & 2019 Nov. 2.43-47p3 at G=21.4-23.0) and PS1 (2019 Nov. 4.44p1)
- K19A02Q 2019 AQ2 (arc=2 opp, H=25.5 ~27m, NHATS target) from Spacewatch 1.8m (March 16.45-47p3 at R=22.1)
- Observation campaigns (NHATS targets, radar support)
- K20E00O 2020 EO (arc=4 days, H=25.9 ~22m, NHATS) from Hidetaka Sato via iTelescope Obs. Siding Spring (March 15.41p3)
- K20E00F 2020 EF (arc=11 days, H=26.5 ~17m, NHATS) from MLS (March 16.13-14p4)
- K20C01U 2020 CU1 (arc=42 days, H=24.1 ~51m, NHATS) from Spacewatch 1.8m (March 17.31-33p2 at R=22.0-22.1)
- K19A13F 2019 AF13 (arc=2 opp, H=23.8 ~59m, NHATS) from Spacewatch 1.8m (March 16.48-50p3 at R=22.1-4)
- K11U63V 2011 UV63 (arc=3 opp, H=21.7 ~155m, NHATS) from the Spacewatch 0.9m telescope (March 16.50-51p2)
- K06G00B 2006 GB (NHATS) from CSS-Kuiper (March 17.11-12p4 at G=20.9-22.8)
- J0166 190166 2005 UP156 (radar) from MLS (March 16.38-40p4)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone - Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
- K20F00C 2020 FC (arc=19 days, H=23.2 ~78m) from MLS (Feb. 27.38-40p4)
- K20D04B 2020 DB4 (arc=18 days, H=25.4 ~28m) from MLS (March 16.38-40p4)
- K20C02N 2020 CN2 (Q=4.145 AU, arc=48 days, H=22.1 ~129m) from MLS (March 16.28-30p4)
- K19X01N 2019 XN1 (arc=4 opp, H=22.0 ~135m) from ATLAS Mauna Loa (March 16.46-48p4)
- K15F35C 2015 FC35 (arc=3 opp, H=22.0 ~135m) from Visnjan Obs. (March 17.10-11p3) and Spacewatch 0.9m (March 17.40-41p3)
- Observations of other objects
- K20E00M 2020 EM (arc=11 days, H=20.0 ~339m) from CSS (March 16.41-43p4)
- K20E00H 2020 EH (i=44.9°, arc=12 days, H=21.1 ~204m) from MLS (March 16.50-52p4) and KLENOT (March 17.01p9)
- K20D04M 2020 DM4 (arc=19 days, H=21.7 ~155m) from MLS (March 16.19-20p4) and Nonndorf Obs. (March 17.06-08p5)
- K20D03T 2020 DT3 (arc=29 days, H=21.3 ~186m) from ARO Westfield (March 6.12p3), Castelmartini Obs. (March 15.97-98p3), ATLAS Mauna Loa (March 16.43-45p6), and Povegliano Veronese Obs. (March 16.86-87p4)
- K20D00X 2020 DX (arc=30 days, H=20.0 ~339m) from Nonndorf Obs. (March 17.03-05p5)
- K20D00Q 2020 DQ (arc=30 days, H=21.4 ~178m) from Spacewatch 0.9m (March 17.21-22p3)
- K20B14P 2020 BP14 (arc=49 days, H=18.5 ~676m) from QOS Obs. (March 16.81-83p5)
- K20B13V 2020 BV13 (Q=4.756 AU, arc=50 days, H=21.5 ~170m) from CSS-Kuiper (March 17.18p4 at G=21.3-22.2)
- K20B13P 2020 BP13 (arc=49 days, H=21.3 ~186m) from Spacewatch 1.8m (March 17.16-18p2)
- K20B04A 2020 BA4 (arc=56 days, H=20.3 ~295m) from Spacewatch 0.9m (March 17.21-23p3)
- K20B03G 2020 BG3 (arc=58 days, H=19.2 ~490m) from CSS-Kuiper (March 17.13p3)
- K20A02Z 2020 AZ2 (arc=70 days, H=21.3 ~186m) from ATLAS Mauna Loa (March 16.50-52p4)
- K19X01G 2019 XG1 (Q=4.163 AU, arc=2 opp, H=19.2 ~490m) from Castelmartini Obs. (March 16.05p3) and Povegliano Veronese Obs. (March 16.88-90p4)
- K19U09T 2019 UT9 (arc=151 days, H=18.6 ~645m) from Visnjan Obs. (March 17.12-13p3)
- K19U00O 2019 UO (Q=4.343 AU, arc=165 days, H=20.1 ~323m) from Spacewatch 0.9m (March 16.42-43p3)
- K19G20D 2019 GD20 (arc=2 opp, H=21.3 ~186m) from MLS (March 16.35-36p4 & 16.41-42p3)
- K18H02L 2018 HL2 (arc=2 opp, H=21.3 ~186m) from Spacewatch via Kitt Peak Natl. Obs. (KPNO) (March 16.33-36p2 at R=23.9-24.1)
- K17D36S 2017 DS36 (arc=2 opp, H=20.8 ~234m) from WISE (March 15.56p1, 15.69p1, 15.83p1, 15.96p1 & 16.09p1)
- K17B94B 2017 BB94 (arc=3 opp, H=20.3 ~295m) from Visnjan Obs. (March 17.14p2)
- K17B32E 2017 BE32 (arc=2 opp, H=19.3 ~467m) from Steward Mt. Lemmon Sta. (March 17.14-15p2)
- K16R33W 2016 RW33 (Q=4.051 AU, arc=3 opp, H=19.3 ~467m) from MLS (March 16.26-28p4)
- K16N16O 2016 NO16 (arc=2 opp, H=19.5 ~426m) from Spacewatch/KPNO (March 16.40-42p3 at R=22.2-23.7)
- K16F15G 2016 FG15 (Q=4.232 AU, arc=3 opp, H=19.9 ~355m) from Spacewatch 1.8m (March 16.51-52p3) and Visnjan Obs. (March 17.11-12p3)
- K16EF7E 2016 EE157 (arc=3 opp, H=20.8 ~234m) from MLS (March 16.48-49p4)
- K15F36C 2015 FC36 (arc=3 opp, H=18.7 ~616m) from UH/Tholen NEO Follow-Up 2.24m Telescope (2019 Dec. 24.59-60p4 at G=24.08-47, Jan. 24.46p1 at G=24.09 & 29.38p1 at G=24.00)
- K15A00B 2015 AB (arc=3 opp, H=20.1 ~323m) from MLS (March 16.26-27p4)
- K12XD3A 2012 XA133 (arc=4 opp, H=20.9 ~224m) from M. Kumrucu-Lohmiller via Slooh.com Chile Obs. (March 16.15-16p3)
- K11E40P 2011 EP40 (arc=4 opp, H=21.1 ~204m) from CSS (March 16.32-34p3)
- K10X11D 2010 XD11 (q=0.326 AU, Q=4.098 AU, arc=4 opp, H=18.0 ~851m) from CSS (March 16.34-36p4)
- K10U07E 2010 UE7 (arc=4 opp, H=19.2 ~490m) from CSS (March 16.32-34p4)
- K09D36R 2009 DR36 (arc=3 opp, H=20.6 ~257m) from SATINO-1 (March 15.89-92p4)
- K08F00G 2008 FG (i=39.4°, arc=3 opp, H=19.9 ~355m) from MLS (March 16.26-27p4)
- K04C52H 2004 CH52 (arc=4 opp, H=19.8 ~371m) from MLS (March 16.19-21p4)
- p0190 510190 2011 CX7 from CSS (March 16.30-32p3 at G=21.0-22.1)
- o0094 500094 2012 BC20 from Castelmartini Obs. (March 15.99-00p3) and San Vito Obs. (March 16.86-88p3)
- n5331 495331 2014 KF91 from MLS (March 16.28-30p4)
- n1565 491565 2012 QF49 from CSS (March 16.36-38p4)
- m2566 482566 2012 WK4 from MLS (March 16.48-50p4)
- k2550 462550 2009 CB3 from CSS (March 16.39-40p2)
- k2041 462041 2007 DL8 from MLS (March 16.11-12p4)
- j9386 459386 2012 KJ11 from CSS (March 16.22-24p4)
- i8818 448818 2011 UU20 from ARO Westfield (March 6.07-08p5), Castelmartini Obs. (March 15.95-96p3), CSS (March 16.24-25p4), and QOS Obs. (March 16.88-92p11)
- g5450 425450 2010 EV45 from CSS (March 16.34-36p4)
- e2267 402267 2005 QE166 from MLS (March 16.28-30p4)
- c8838 388838 2008 EZ5 from Castelmartini Obs. (March 16.03p3)
- X3510 333510 2005 MD from MLS (March 16.17-19p4)
- W5769 325769 2010 LY63 from MLS (March 16.35-37p3)
- V8050 318050 2004 FC32 from Spacewatch 0.9m (March 16.46-47p3)
- U6462 306462 1999 RC32 from Tentlingen Obs. (March 15.99-04p5), Castelmartini Obs. (March 16.04p2), and MLS (March 16.28-30p4)
- R7810 277810 2006 FV35 from MLS (March 16.42-44p4)
- R6732 276732 2004 EV9 from Montelupo Obs. (March 15.77-78p4) and QOS Obs. (March 16.79-81p36)
- R4138 274138 2008 FU6 from MLS (March 16.23-25p4)
- P2091 252091 2000 UP30 from MLS (March 16.15-16p4)
- O8926 248926 2006 WZ2 from Castelmartini Obs. (March 15.94-95p3)
- O3298 243298 2008 EN82 from MLS (March 16.30-32p4)
- O2216 242216 2003 RN10 from MASTER OAFA Obs. (March 16.34-35p2)
- J0161 190161 2005 TJ174 from MLS (March 16.13-14p4)
- H2722 172722 2004 BV102 from MLS (March 16.35-37p4)
- G3692 163692 2003 CY18 from CSS (March 16.30-32p4)
- G2210 162210 1999 SM5 from MLS (March 16.28-30p3)
- G2196 162196 1999 RL45 from MLS (March 16.15-16p4)
- G2080 162080 1998 DG16 from CSS (March 16.22-23p4)
- G2038 162038 1996 DH from Tentlingen Obs. (March 15.88-92p6)
- F9454 159454 2000 DJ8 from CSS (March 16.20-21p4)
- F4029 154029 2002 CY46 from CSS (March 16.28-29p4)
- F3243 153243 2001 AU47 from Steward Mt. Lemmon Sta. (March 16.11-12p3)
- E3527 143527 2003 EN16 from ATLAS Mauna Loa (March 16.43-45p4)
- E3381 143381 2003 BC21 from MLS (March 16.30-32p4)
- E1525 141525 2002 FV5 from CSS (March 16.41-43p4)
- D7064 137064 1998 WP5 from CSS (March 16.45-47p4)
- D6582 136582 1992 BA from CSS (March 16.24-25p4)
- 86067 86067 1999 RM28 from CSS (March 16.43-44p4)
- 65690 65690 1991 DG from ARO Westfield (March 6.15p3), Montelupo Obs. (March 15.86p2), Tentlingen Obs. (March 15.94-97p5), Castelmartini Obs. (March 15.98-99p3), ATLAS Mauna Loa (March 16.44-46p4), QOS Obs. (March 16.85-87p30), and Oberfrauendorf Obs. (March 16.90-91p4)
- 65674 65674 1988 SM from MLS (March 16.35-37p4)
- 54686 54686 2001 DU8 from CSS (March 16.32-34p4)
- 52768 52768 1998 OR2 from Golden Ears Obs. (Feb. 19.17-19p3, 20.15-19p3 & March 1.13-16p3), ARO Westfield (March 6.08-09p6), Pin Oak Obs. (March 7.11p1, 7.21p1, 12.09p1, 12.19p1, 12.26p1, 13.06p1, 13.15p1 & 13.23p1), Montelupo Obs. (March 15.80-82p7), program code 1 via Kuban State Univ. Obs. (March 16.67-93p114), San Vito Obs. (March 16.80-83p4), and M57 Obs. (March 16.80p1, 16.86p1, 16.91p1, 16.97p1 & 17.05p1)
- 40267 40267 1999 GJ4 from CSS (March 16.20-21p4)
- 39796 39796 1997 TD from MLS (March 16.33-34p4)
- 36284 36284 2000 DM8 from Montelupo Obs. (March 15.83p3)
- 35107 35107 1991 VH from ARO Westfield (March 6.14-15p5), Montelupo Obs. (March 15.84-85p5), Castelmartini Obs. (March 15.99p3), and San Vito Obs. (March 16.84-85p4)
- 26760 26760 2001 KP41 from MLS (March 16.50-52p4)
- 25330 25330 1999 KV4 from CSS (March 16.10-12p3)
- 20826 20826 2000 UV13 from MASTER OAFA Obs. (March 16.36-37p3)
- 18172 18172 2000 QL7 from CSS (March 16.22-23p4)
- 11405 11405 1999 CV3 from Tentlingen Obs. (March 15.85-86p3)
- 11066 11066 Sigurd (1992 CC1) from MLS (March 16.31-32p4) and ATLAS Mauna Loa (March 16.48-50p4)
- 08566 8566 1996 EN from ATLAS Mauna Loa (March 16.43-45p4)
- 07088 7088 Ishtar (1992 AA) from CSS (March 16.34-36p4)
- 04450 4450 Pan (1987 SY) from Tentlingen Obs. (March 15.78-84p5)
- 02061 2061 Anza (1960 UA) from MLS (March 16.35-37p4)
- 01866 1866 Sisyphus (1972 XA) from San Vito Obs. (March 16.76-78p4)
- 01864 1864 Daedalus (1971 FA) from CSS (March 16.28-30p4)
MPEC 2020-F11 - "00:47 UT" - 2020 EU
- K20E00U 2020 EU (small asteroid, H=24.1 ~51m) was picked up at 0506 UT on 15 March by MLS, observing it at March 15.21-25p8. This detection was confirmed by Steward Mt. Lemmon Sta. (March 15.32-34p3 & 16.18-19p3), Visnjan Obs. (March 15.91-93p5), Holmes/CTIO (March 16.12-13p3), and Schwarzschild Obs. (March 16.93-94p3).
MPEC 2020-F10 - "00:46 UT" - 2020 ET
- K20E00T 2020 ET (risk listed, Earth MOID=5.6 LD, H=25.8 ~23m, close passer) was picked up at 0948 UT on 15 March by MLS, observing it at March 15.41-46p16. This detection was confirmed by ROASTERR-1 (March 15.78-79p4), Visnjan Obs. (March 15.78-79p7), Clixby Obs. (March 15.84p3), Castelmartini Obs. (March 15.87-88p6), Pascoli Obs. (March 15.88-89p3), Lumezzane Obs. (March 15.89-91p3), Dettelbach Vineyard Obs. (March 16.06-10p3), SATINO-1 (March 16.07-10p4), Great Shefford Obs. (March 16.07p4), Northolt Branch Obs. (March 16.08-09p3), Steward Mt. Lemmon Sta. (March 16.21p4 & 16.51p4), CSS (March 16.34-36p4), Schwarzschild Obs. (March 16.82p3), Nonndorf Obs. (March 16.93-94p5), and KLENOT (March 16.99p9).
MPEC 2020-F09 - "00:45 UT" - 2020 ES
- K20E00S 2020 ES (small asteroid, H=23.5 ~68m) was picked up at 0318 UT on 15 March by MLS, observing it at March 15.14-16p4 and 15.24-25p3. This detection was confirmed by PS2 (March 12.33-36p3), Steward Mt. Lemmon Sta. (March 15.18-19p4 & 16.15-16p4), Visnjan Obs. (March 15.83-85p5), Holmes/CTIO (March 16.08-09p3), and Schwarzschild Obs. (March 16.78-79p3).
MPEC 2020-F08 - "00:43 UT" - 2020 FC
- K20F00C 2020 FC (small asteroid, H=23.1 ~81m) was picked up at 1032 UT on 16 March by ATLAS Mauna Loa, observing it at March 16.44-46p4. This detection was confirmed by PS1 (March 12.37-38p2), Visnjan Obs. (March 16.77p5), Rantiga Obs. (March 16.80-81p2), Schwarzschild Obs. (March 16.81-82p3), Schiaparelli Obs. (March 16.86-88p3), Pascoli Obs. (March 16.91p3), KLENOT (March 16.92-93p5), and Holmes/CTIO (March 17.01p5).
MPEC 2020-F07 - "00:42 UT" - 2020 FB
- K20F00B 2020 FB (Earth MOID=8.4 LD, H=25.2 ~31m, NHATS target) was picked up at 0614 UT on 16 March by CSS, observing it at March 16.26-28p4. This detection was confirmed by Steward Mt. Lemmon Sta. (March 16.36p4), Schwarzschild Obs. (March 16.77p3), Visnjan Obs. (March 16.78-79p5), Castelmartini Obs. (March 16.85-86p5), ROASTERR-1 (March 16.87-88p3), KLENOT (March 16.93p8), Tentlingen Obs. (March 16.94-97p5), and Pascoli Obs. (March 16.94-95p3).
Observers on 17 March '20
A total of 50 observers appear in today's MPECs.
Code | Observer / observatory |
---|---|
H21 | Astronomical Research Obs. Westfield in Illinois, 6 in MPEC 2020-F12 -- 2020 DT3, 2020 BW10, 65690, 52768, 448818, 35107 |
T08 | ATLAS Mauna Loa in Hawaii, 8 in MPECs 2020-F08 & 2020-F12 -- 2020 FC, 2020 DT3, 2020 AZ2, 2019 XN1, 65690, 143527, 11066, 8566 |
160 | Castelmartini Obs. in Italy, 14 in MPECs 2020-F07, 2020-F10, 2020-F12, 2020-F13, 2020-F14 & 2020-F21 -- 2020 FM, 2020 FD, 2020 FB, 2020 EV, 2020 ET, 2020 DT3, 2019 XG1, 65690, 500094, 448818, 388838, 35107, 306462, 248926 |
703 | Catalina Sky Survey (CSS) in Arizona, 31 in MPECs 2020-F07, 2020-F10, 2020-F12, 2020-F14, 2020-F18, 2020-F20, 2020-F21 & 2020-F28 -- 2020 FT, 2020 FM, 2020 FL, 2020 FH, 2020 FB, 2020 EV, 2020 ET, 2020 EM, 2011 EP40, 2010 XD11, 2010 UE7, 86067, 54686, 510190, 491565, 462550, 459386, 448818, 425450, 40267, 25330, 18172, 163692, 162080, 159454, 154029, 141525, 137064, 136582, 7088, 1864 |
V06 | Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 5 in MPECs 2020-F12, 2020-F13 & 2020-F26 -- 2020 FR, 2020 FD, 2020 BV13, 2020 BG3, 2006 GB |
807| | Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 8 in MPECs 2020-F08, 2020-F09, 2020-F11, 2020-F17, 2020-F19, 2020-F22, 2020-F24 & 2020-F27 -- 2020 FS, 2020 FP, 2020 FN, 2020 FK, 2020 FG, 2020 FC, 2020 EU, 2020 ES |
Z99 | Clixby Obs. in England, 2 in MPECs 2020-F10 & 2020-F14 -- 2020 EV, 2020 ET |
106 | Crni Vrh Obs. in Slovenia, 1 in MPEC 2020-F13 -- 2020 FD |
K87 | Dettelbach Vineyard Obs. in Germany, 3 in MPECs 2020-F10, 2020-F14 & 2020-F20 -- 2020 FL, 2020 EV, 2020 ET |
113 | Drebach Obs. in Germany, 1 in MPEC 2020-F22 -- 2020 FN |
X31 | Galilei Obs., 3 in MPECs 2020-F13, 2020-F17 & 2020-F18 -- 2020 FH, 2020 FG, 2020 FD |
U55 | Golden Ears Obs., 1 in MPEC 2020-F12 -- 52768 |
J95 | Great Shefford Obs. in England, 7 in MPECs 2020-F10, 2020-F12, 2020-F13, 2020-F14, 2020-F18, 2020-F20, 2020-F23 & 2020-F29 -- 2020 FU, 2020 FO, 2020 FL, 2020 FH, 2020 FD, 2020 EV, 2020 ET |
Q621 | Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-F12 -- 2020 EO |
695^ | Spacewatch via Kitt Peak Natl. Obs. (KPNO) in Arizona, 2 in MPEC 2020-F12 -- 2018 HL2, 2016 NO16 |
246 | KLENOT in the Czech Republic, 14 in MPECs 2020-F07, 2020-F08, 2020-F10, 2020-F12, 2020-F13, 2020-F14, 2020-F18, 2020-F20, 2020-F21, 2020-F22, 2020-F23, 2020-F28 & 2020-F29 -- 2020 FU, 2020 FT, 2020 FO, 2020 FN, 2020 FM, 2020 FL, 2020 FH, 2020 FD, 2020 FC, 2020 FB, 2020 EV, 2020 ET, 2020 EH, 2020 DP4 |
C401 | program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-F12 -- 52768 |
130 | Lumezzane Obs. in Italy, 1 in MPEC 2020-F10 -- 2020 ET |
K38 | M57 Obs. in Italy, 2 in MPECs 2020-F12 & 2020-F18 -- 2020 FH, 52768 |
W92 | MASTER OAFA Obs., 2 in MPEC 2020-F12 -- 242216, 20826 |
118 | Modra Obs. in Slovakia, 1 in MPEC 2020-F12 -- 2020 FB |
108 | Montelupo Obs. in Italy, 5 in MPEC 2020-F12 -- 65690, 52768, 36284, 35107, 276732 |
474 | Mt. John Obs. in New Zealand, 6 in MPECs 2020-F13, 2020-F17, 2020-F19, 2020-F26, 2020-F27 & 2020-F29 -- 2020 FU, 2020 FS, 2020 FR, 2020 FK, 2020 FG, 2020 FD |
G96 | Mt. Lemmon Survey (MLS) in Arizona, 51 in MPECs 2020-F09, 2020-F10, 2020-F11, 2020-F12, 2020-F13, 2020-F14, 2020-F15, 2020-F16, 2020-F17, 2020-F19, 2020-F22, 2020-F23, 2020-F24, 2020-F25, 2020-F26, 2020-F27 & 2020-F29 -- 2020 FU, 2020 FS, 2020 FR, 2020 FQ, 2020 FP, 2020 FO, 2020 FN, 2020 FK, 2020 FG, 2020 FF, 2020 FE, 2020 FD, 2020 FC, 2020 EV, 2020 EU, 2020 ET, 2020 ES, 2020 EH, 2020 EF, 2020 DP4, 2020 DM4, 2020 DB4, 2020 CN2, 2019 GD20, 2016 RW33, 2016 EE157, 2015 AB, 2008 FG, 2004 CH52, 65674, 495331, 482566, 462041, 402267, 39796, 333510, 325769, 306462, 277810, 274138, 26760, 252091, 243298, 190166, 190161, 172722, 162210, 162196, 143381, 11066, 2061 |
C47 | Nonndorf Obs. in Austria, 5 in MPECs 2020-F10, 2020-F12, 2020-F18 & 2020-F20 -- 2020 FL, 2020 FH, 2020 ET, 2020 DX, 2020 DM4 |
J69 | North Obs. in England, 4 in MPECs 2020-F12, 2020-F13, 2020-F18 & 2020-F20 -- 2020 FL, 2020 FH, 2020 FD, 2020 ET |
Z80 | Northolt Branch Obs. in England, 5 in MPECs 2020-F10, 2020-F12, 2020-F13, 2020-F18 & 2020-F20 -- 2020 FL, 2020 FH, 2020 FD, 2020 ET, 2020 DP4 |
G34 | Oberfrauendorf Obs. in Germany, 2 in MPECs 2020-F12 & 2020-F20 -- 2020 FL, 65690 |
F51 | Pan-STARRS 1 (PS1) in Hawaii, 4 in MPECs 2020-F08, 2020-F12, 2020-F15 & 2020-F16 -- 2020 FF, 2020 FE, 2020 FC, 2019 WN2 |
F52 | Pan-STARRS 2 (PS2) in Hawaii, 2 in MPECs 2020-F09 & 2020-F12 -- 2020 ES, 2019 WN2 |
K63 | Pascoli Obs. in Italy, 8 in MPECs 2020-F07, 2020-F08, 2020-F10, 2020-F13, 2020-F14, 2020-F18, 2020-F21 & 2020-F28 -- 2020 FT, 2020 FM, 2020 FH, 2020 FD, 2020 FC, 2020 FB, 2020 EV, 2020 ET |
V93 | Pin Oak Obs., 1 in MPEC 2020-F12 -- 52768 |
A48 | Povegliano Veronese Obs. in Italy, 2 in MPEC 2020-F12 -- 2020 DT3, 2019 XG1 |
L18 | QOS Obs., 5 in MPECs 2020-F12 & 2020-F20 -- 2020 FL, 2020 BP14, 65690, 448818, 276732 |
D03 | Rantiga Obs. in Poland, 1 in MPEC 2020-F08 -- 2020 FC |
L04 | ROASTERR-1 in Romania, 7 in MPECs 2020-F07, 2020-F10, 2020-F13, 2020-F14, 2020-F18, 2020-F20 & 2020-F22 -- 2020 FN, 2020 FL, 2020 FH, 2020 FD, 2020 FB, 2020 EV, 2020 ET |
K61 | Rokycany Obs. in the Czech Republic, 3 in MPECs 2020-F21, 2020-F22 & 2020-F28 -- 2020 FT, 2020 FN, 2020 FM |
233 | San Vito Obs. in Italy, 4 in MPEC 2020-F12 -- 52768, 500094, 35107, 1866 |
C95 | SATINO-1 in France, 3 in MPECs 2020-F10, 2020-F12 & 2020-F14 -- 2020 EV, 2020 ET, 2009 DR36 |
204 | Schiaparelli Obs. in Italy, 11 in MPECs 2020-F08, 2020-F13, 2020-F14, 2020-F15, 2020-F17, 2020-F18, 2020-F20, 2020-F21, 2020-F22, 2020-F28 & 2020-F29 -- 2020 FU, 2020 FT, 2020 FN, 2020 FM, 2020 FL, 2020 FH, 2020 FG, 2020 FE, 2020 FD, 2020 FC, 2020 EV |
033 | Schwarzschild Obs. in Germany, 22 in MPECs 2020-F07, 2020-F08, 2020-F09, 2020-F10, 2020-F11, 2020-F12, 2020-F13, 2020-F14, 2020-F15, 2020-F16, 2020-F17, 2020-F18, 2020-F19, 2020-F20, 2020-F21, 2020-F22, 2020-F23, 2020-F24, 2020-F25, 2020-F26, 2020-F27, 2020-F28 & 2020-F29 -- 2020 FU, 2020 FT, 2020 FS, 2020 FR, 2020 FQ, 2020 FP, 2020 FO, 2020 FN, 2020 FM, 2020 FL, 2020 FK, 2020 FH, 2020 FG, 2020 FF, 2020 FE, 2020 FD, 2020 FC, 2020 FB, 2020 EV, 2020 EU, 2020 ET, 2020 ES |
W88! | W.F. Cashwell in Nevada via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-F12 -- 2020 DP4 |
W885 | M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-F12 -- 2012 XA133 |
691 | Spacewatch 0.9m telescope in Arizona, 6 in MPEC 2020-F12 -- 2020 DQ, 2020 BA4, 2019 UO, 2015 FC35, 2011 UV63, 318050 |
291 | Spacewatch 1.8m telescope in Arizona, 6 in MPECs 2020-F12 & 2020-F13 -- 2020 FD, 2020 CU1, 2020 BP13, 2019 AQ2, 2019 AF13, 2016 FG15 |
I52 | Steward Obs. Mt. Lemmon Station in Arizona, 19 in MPECs 2020-F07, 2020-F09, 2020-F10, 2020-F11, 2020-F12, 2020-F13, 2020-F14, 2020-F15, 2020-F17, 2020-F18, 2020-F20, 2020-F21, 2020-F22, 2020-F23, 2020-F25, 2020-F27, 2020-F28 & 2020-F29 -- 2020 FU, 2020 FT, 2020 FS, 2020 FQ, 2020 FO, 2020 FN, 2020 FM, 2020 FL, 2020 FH, 2020 FG, 2020 FE, 2020 FD, 2020 FB, 2020 EV, 2020 EU, 2020 ET, 2020 ES, 2017 BE32, 153243 |
A16 | Tentlingen Obs. in Switzerland, 6 in MPECs 2020-F07 & 2020-F12 -- 2020 FB, 65690, 306462, 162038, 11405, 4450 |
T12 | UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-F12 -- 2015 FC36 |
L01 | Visnjan Obs. in Croatia, 26 in MPECs 2020-F07, 2020-F08, 2020-F09, 2020-F10, 2020-F11, 2020-F12, 2020-F13, 2020-F14, 2020-F15, 2020-F16, 2020-F17, 2020-F18, 2020-F19, 2020-F20, 2020-F21, 2020-F22, 2020-F23, 2020-F24, 2020-F25, 2020-F26, 2020-F27, 2020-F28 & 2020-F29 -- 2020 FU, 2020 FT, 2020 FS, 2020 FR, 2020 FQ, 2020 FP, 2020 FO, 2020 FN, 2020 FM, 2020 FL, 2020 FK, 2020 FH, 2020 FG, 2020 FF, 2020 FE, 2020 FD, 2020 FC, 2020 FB, 2020 EV, 2020 EU, 2020 ET, 2020 ES, 2019 UT9, 2017 BB94, 2016 FG15, 2015 FC35 |
C51 | WISE in Earth polar orbit, 1 in MPEC 2020-F12 -- 2017 DS36 |
C42 | Xingming Obs. in China, 1 in MPEC 2020-F13 -- 2020 FD |
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page. |
Impact Risk Monitoring on 17 March '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 FG | JPL Sentry | 1600 | 2102-2118 | 5 | 4.3046e-07 | -7.90 | -8.38 | 0 | JPL: Computed at 08:31 today Pacific time based on 34 observations spanning 1.2968 days (2020-Mar-16.23329 to 2020-Mar-17.530081). Diameter approximately 0.009 km. from weighted mean H=27.89. |
NEODyS | 1600 | 2093-2118 | 10 | 5.0e-07 | -7.83 | -8.21 | 0 | NEODyS: "Based on 34 optical observations (of which 0 are rejected as outliers) from 2020-03-16.234 to 2020-03-17.531." | |
2020 FD | JPL Sentry | 1600 | 2027-2107 | 22 | 3.326045e-06 | -6.29 | -6.90 | 0 | JPL: Computed at 08:38 today Pacific time based on 89 observations spanning 1.0649 days (2020-Mar-16.45246 to 2020-Mar-17.51735). Diameter approximately 0.010 km. from weighted mean H=27.67. |
NEODyS | 1600 | 2027-2106 | 23 | 1.13e-07 | -7.82 | -8.26 | 0 | NEODyS: "Based on 89 optical observations (of which 0 are rejected as outliers) from 2020-03-16.453 to 2020-03-17.518." | |
2020 ET | JPL Sentry | 1600 | R E M O V E D | JPL #2 for the day: Risk listing removed at 1531 UTC today | |||||
2020 DM3 | JPL Sentry | 1600 | 2109-2109 | 1 | 6.827e-08 | -7.83 | -7.83 | 0 | JPL: Computed at 01:31 today Pacific time based on 61 observations spanning 3.2963 days (2020-Feb-26.14966 to 2020-Feb-29.445913). Diameter approximately 0.020 km. from weighted mean H=26.16. |
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 17 March '20
Times are UTC for when items were noted or added by The Tracking News.
2304 | Grabbed MPEC 2020-F24 - 2020 FP - see above Grabbed MPEC 2020-F25 - 2020 FQ - see above Grabbed MPEC 2020-F26 - 2020 FR - see above Grabbed MPEC 2020-F27 - 2020 FS - see above Grabbed MPEC 2020-F28 - 2020 FT - see above Grabbed MPEC 2020-F29 - 2020 FU - see above |
2201 | Grabbed MPEC 2020-F19 - 2020 FK - see above Grabbed MPEC 2020-F20 - 2020 FL - see above Grabbed MPEC 2020-F21 - 2020 FM - see above Grabbed MPEC 2020-F22 - 2020 FN - see above Grabbed MPEC 2020-F23 - 2020 FO - see above |
1600 | Noted that JPL Sentry has updated its 2020 DM3 risk assessment - see above Noted that JPL Sentry has removed 2020 ET as an impact risk - see above Noted that JPL Sentry has posted 2020 FD as an impact risk - see above Noted that NEODyS has posted 2020 FD as an impact risk - see above Noted that JPL Sentry has posted 2020 FG as an impact risk - see above Noted that NEODyS has posted 2020 FG as an impact risk - see above Grabbed MPEC 2020-F12 - Daily Orbit Update - see above Grabbed MPEC 2020-F13 - 2020 FD - see above Grabbed MPEC 2020-F14 - 2020 EV - see above Grabbed MPEC 2020-F15 - 2020 FE - see above Grabbed MPEC 2020-F16 - 2020 FF - see above Grabbed MPEC 2020-F17 - 2020 FG - see above Grabbed MPEC 2020-F18 - 2020 FH - see above |
0433 | Noted that JPL Sentry has posted 2020 ET as an impact risk - see above |
0119 | Grabbed MPEC 2020-F07 - 2020 FB - see above Grabbed MPEC 2020-F08 - 2020 FC - see above Grabbed MPEC 2020-F09 - 2020 ES - see above Grabbed MPEC 2020-F10 - 2020 ET - see above Grabbed MPEC 2020-F11 - 2020 EU - see above |