Contents  on 24 March '20

Asteroid/Comet Connection (A/CC) Resources:

The latest A/CC news is available via framed access, RSS news feed 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 24 March '20

Radar observation of two objects

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:


Data update noted at 1908 UTC when the database was dated 24 March


Data update noted at 2031 UTC when the database was dated 24 March



Photometry and some astrometry is needed for upcoming radar targets. See Arecibo and Goldstone schedules.

NEOCP Activity  on 24 March '20

The MPC's NEO Confirmation Page has 80 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 80 objects listed. Of these, 31 were "one nighters." So far The Tracking News has counted a total of 102 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 24 March '20

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been seventeen MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2020-F111 - "22:30 UT" - 2020 EX


MPEC 2020-F110 - "21:00 UT" - 2020 FS3


MPEC 2020-F109 - "20:57 UT" - 2020 FR3


MPEC 2020-F108 - "18:01 UT" - 2018 GY


<< DOU on 24 March '20 >>  MPEC 2020-F107 - "12:07 UT" - Daily Orbit Update


MPEC 2020-F106 - "05:13 UT" - 2020 FP3


MPEC 2020-F105 - "05:08 UT" - 2020 FO3


MPEC 2020-F104 - "05:05 UT" - 2020 FN3


MPEC 2020-F103 - "04:58 UT" - 2020 FM3


MPEC 2020-F102 - "04:50 UT" - 2020 FK3


MPEC 2020-F101 - "04:46 UT" - 2020 FJ3


MPEC 2020-F100 - "04:33 UT" - 2020 FH3


MPEC 2020-F99 - "04:29 UT" - 2020 FG3


MPEC 2020-F98 - "04:07 UT" - 2020 FF3


MPEC 2020-F97 - "03:59 UT" - 2020 FE3


MPEC 2020-F96 - "03:51 UT" - 2020 FD3


MPEC 2020-F95 - "03:29 UT" - 2020 FC3

Observers  on 24 March '20

A total of 40 observers appear in today's MPECs.

CodeObserver / observatory
251Arecibo in Puerto Rico, 2 in radar -- 2019 XF, 418849
H21Astronomical Research Obs. Westfield in Illinois, 26 in MPECs 2020-F97, 2020-F101 & 2020-F107 -- 2020 FY, 2020 FX1, 2020 FU1, 2020 FM2, 2020 FJ3, 2020 FE3, 2020 EJ, 2020 CZ2, 2020 CJ1, 2020 CB1, 2020 BY12, 2019 YK6, 2019 AQ2, 2019 AF13, 2017 JU2, 2016 CA32, 2016 BD1, 2015 FB36, 2012 QQ10, 2008 ER, 2006 KD40, 2004 RV2, 2003 SS84, 2003 DA16, 416851, 360433
T05ATLAS Haleakala in Hawaii, 21 in MPEC 2020-F107 -- 85628, 65690, 54686, 448818, 40267, 388945, 388838, 34613, 276732, 26760, 18172, 137064, 106589, 8566, 7088, 6569, 5626, 4450, 2059, 1864, 1627
703Catalina Sky Survey (CSS) in Arizona, 3 in MPECs 2020-F107 & 2020-F108 -- 2020 FY2, 2020 FW2, 2018 GY
Z99Clixby Obs. in England, 3 in MPECs 2020-F107 & 2020-F110 -- 2020 FW2, 2020 FS3, 2020 FM2
958Dax Obs. in France, 2 in MPECs 2020-F99 & 2020-F110 -- 2020 FS3, 2020 FG3
K87Dettelbach Vineyard Obs. in Germany, 7 in MPECs 2020-F107 & 2020-F109 -- 2020 FR3, 2020 FN1, 2020 FM2, 2020 FB, 2020 EH, 2020 DT3, 2020 DR2
113Drebach Obs. in Germany, 1 in MPEC 2020-F109 -- 2020 FR3
C73Galati Obs. in Romania, 2 in MPEC 2020-F107 -- 2019 XG1, 2001 GS2
X31Galilei Obs., 4 in MPECs 2020-F99, 2020-F100, 2020-F101 & 2020-F110 -- 2020 FS3, 2020 FJ3, 2020 FH3, 2020 FG3
203GiaGa Obs. in Italy, 1 in MPEC 2020-F110 -- 2020 FS3
J95Great Shefford Obs. in England, 12 in MPECs 2020-F99, 2020-F100, 2020-F102, 2020-F103, 2020-F104, 2020-F105, 2020-F107, 2020-F109, 2020-F110 & 2020-F111 -- 2020 FZ2, 2020 FW2, 2020 FS3, 2020 FR3, 2020 FO3, 2020 FN3, 2020 FM3, 2020 FM2, 2020 FK3, 2020 FH3, 2020 FG3, 2020 EX
A17Guidestar Obs. in Germany, 2 in MPECs 2020-F107 & 2020-F109 -- 2020 FR3, 2020 FA3
B15Inastars Obs. in Germany, 1 in MPEC 2020-F107 -- 2020 FW2
P93JAXA Space Tracking & Communications Center (JAXA STCC) in Japan, 3 in MPEC 2020-F107 -- 2020 FW2, 65690, 52768
246KLENOT in the Czech Republic, 14 in MPECs 2020-F95, 2020-F99, 2020-F100, 2020-F104, 2020-F105, 2020-F107, 2020-F109, 2020-F110 & 2020-F111 -- 2020 FS3, 2020 FR3, 2020 FO3, 2020 FN3, 2020 FN1, 2020 FM2, 2020 FH3, 2020 FG3, 2020 FE2, 2020 FC3, 2020 FB, 2020 EX, 2020 EH, 2020 DT3
K93LCO Sutherland C in South Africa, 1 in MPEC 2020-F97 -- 2020 FE3
568^R. Wainscoat on Mauna Kea in Hawaii, 2 in MPECs 2020-F96 & 2020-F98 -- 2020 FF3, 2020 FD3
P87MPC code P87, 3 in MPEC 2020-F107 -- 2020 DT3, 65690, 52768
G96Mt. Lemmon Survey (MLS) in Arizona, 4 in MPECs 2020-F107 & 2020-F111 -- 2020 FZ2, 2020 FY2, 2020 FM3, 2020 EX
K74Muensterschwarzach Obs. in Germany, 1 in MPEC 2020-F110 -- 2020 FS3
J69North Obs. in England, 3 in MPECs 2020-F107 & 2020-F110 -- 2020 FW2, 2020 FS3, 2020 FM2
Z80Northolt Branch Obs. in England, 5 in MPECs 2020-F107 & 2020-F110 -- 2020 FW2, 2020 FS3, 2020 FM2, 2020 FL2, 163693
G34Oberfrauendorf Obs. in Germany, 1 in MPEC 2020-F110 -- 2020 FS3
F51Pan-STARRS 1 (PS1) in Hawaii, 48 in MPECs 2020-F97, 2020-F98, 2020-F101, 2020-F102, 2020-F103, 2020-F104, 2020-F105, 2020-F106, 2020-F107, 2020-F108, 2020-F109, 2020-F110 & 2020-F111 -- 2020 FS3, 2020 FR3, 2020 FP3, 2020 FP, 2020 FO3, 2020 FN3, 2020 FN1, 2020 FM3, 2020 FK3, 2020 FJ3, 2020 FF3, 2020 FE3, 2020 EX, 2020 EF, 2020 DG2, 2019 YG7, 2019 TH6, 2018 GY, 2017 RQ16, 2016 RW33, 2016 CC32, 2015 HU116, 2015 DZ197, 2012 JR17, 2008 FG, 2007 DD49, 2005 XP66, 65674, 512244, 511243, 483563, 462041, 422787, 402267, 399307, 385497, 34613, 331792, 329770, 311044, 276274, 186822, 162039, 154589, 154229, 141670, 138205, 2061
F52Pan-STARRS 2 (PS2) in Hawaii, 20 in MPECs 2020-F95, 2020-F96, 2020-F99, 2020-F100 & 2020-F107 -- 2020 FS1, 2020 FH3, 2020 FH2, 2020 FG3, 2020 FD3, 2020 FC3, 2020 BC9, 2019 WB6, 2016 EE156, 2010 UE7, 68350, 525364, 510190, 433992, 335746, 267494, 159454, 155341, 152889, 6047
D29Purple Mtn. Obs. Xuyi Station in China, 13 in MPEC 2020-F107 -- 2019 UO, 2016 LE9, 2016 AX147, 2015 RH2, 90075, 495331, 443103, 36284, 25330, 143527, 138013, 11066, 2329
L18QOS Obs., 6 in MPEC 2020-F107 -- 2020 EH, 2020 DT3, 2015 FC35, 65690, 448818, 276732
K61Rokycany Obs. in the Czech Republic, 2 in MPECs 2020-F109 & 2020-F110 -- 2020 FS3, 2020 FR3
233San Vito Obs. in Italy, 2 in MPEC 2020-F107 -- 36284, 8566
H36Sandlot Obs. in Kansas, 1 in MPEC 2020-F111 -- 2020 EX
C95SATINO-1 in France, 1 in MPEC 2020-F107 -- 2019 WH6
033Schwarzschild Obs. in Germany, 14 in MPECs 2020-F95, 2020-F96, 2020-F97, 2020-F99, 2020-F100, 2020-F102, 2020-F103, 2020-F104, 2020-F105, 2020-F106, 2020-F107, 2020-F109, 2020-F110 & 2020-F111 -- 2020 FS3, 2020 FR3, 2020 FP3, 2020 FO3, 2020 FN3, 2020 FM3, 2020 FK3, 2020 FH3, 2020 FG3, 2020 FE3, 2020 FD3, 2020 FC3, 2020 EX, 2012 EM8
I93St. Pardon de Conques Obs. in France, 8 in MPECs 2020-F95, 2020-F99, 2020-F100, 2020-F101, 2020-F102, 2020-F109, 2020-F110 & 2020-F111 -- 2020 FS3, 2020 FR3, 2020 FK3, 2020 FJ3, 2020 FH3, 2020 FG3, 2020 FC3, 2020 EX
I52Steward Obs. Mt. Lemmon Station in Arizona, 22 in MPECs 2020-F104, 2020-F106, 2020-F107, 2020-F109, 2020-F110 & 2020-F111 -- 2020 FS3, 2020 FS1, 2020 FR3, 2020 FR1, 2020 FP3, 2020 FO1, 2020 FN3, 2020 FN2, 2020 FN1, 2020 FM, 2020 FJ2, 2020 FE2, 2020 FE, 2020 FB1, 2020 FB, 2020 EX, 2020 EV, 2020 EN, 2020 DR2, 2020 BJ4, 2019 YG7, 2017 BE32
K62Teplice Obs. in the Czech Republic, 2 in MPEC 2020-F107 -- 2020 FW2, 2020 FL2
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-F107 -- 2001 OT
L01Visnjan Obs. in Croatia, 14 in MPECs 2020-F95, 2020-F97, 2020-F98, 2020-F99, 2020-F100, 2020-F101, 2020-F102, 2020-F103, 2020-F104, 2020-F106, 2020-F107, 2020-F109, 2020-F110 & 2020-F111 -- 2020 FS3, 2020 FR3, 2020 FP3, 2020 FN3, 2020 FM3, 2020 FK3, 2020 FJ3, 2020 FH3, 2020 FG3, 2020 FF3, 2020 FE3, 2020 FC3, 2020 FA3, 2020 EX
198Wildberg Obs. in Germany, 4 in MPECs 2020-F100, 2020-F107 & 2020-F109 -- 2020 FY2, 2020 FV2, 2020 FR3, 2020 FH3
C51WISE in Earth polar orbit, 5 in MPEC 2020-F107 -- 374188, 36284, 163243, 162080, 3360
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 24 March '20

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2358 UTC)
See the CRT page for a list of all objects rated recently as risks and our ephemerides page for a list of risk-listed objects under current observation.
The time horizon for JPL and NEODyS listings is 100 years, and both post impact solutions beyond that for some special objects.
For the latest official risk assessments, and for explanations of the terminology, see the NASA/JPL Sentry and NEODyS CLOMON2 risk pages.
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 FR3JPL Sentry22112026-2076131.76983e-08-4.87-5.010JPL: Computed at 14:59 today Pacific time based on 55 observations spanning 2.5544 days (2020-Mar-22.255297 to 2020-Mar-24.80965). Diameter approximately 0.239 km. from weighted mean H=20.78.
2020 FN3JPL Sentry15302043-2119731.5563748e-06-5.73-6.270JPL: Computed at 23:49 March 23rd Pacific time based on 23 observations spanning 1.7648 days (2020-Mar-22.36744 to 2020-Mar-24.13221). Diameter approximately 0.048 km. from weighted mean H=24.23.
NEODyS15302036-2117863.47e-06-5.29-5.880NEODyS: "Based on 23 optical observations (of which 1 are rejected as outliers) from 2020-03-22.368 to 2020-03-24.133."
2020 FZ2JPL Sentry15302110-211833.0054e-07-6.52-6.740JPL: Computed at 07:02 today Pacific time based on 25 observations spanning 1.9135 days (2020-Mar-22.30792 to 2020-Mar-24.22141). Diameter approximately 0.034 km. from weighted mean H=25.02.
NEODyS15302110-211842.87e-07-6.55-6.80NEODyS: "Based on 25 optical observations (of which 1 are rejected as outliers) from 2020-03-22.309 to 2020-03-24.222."
2020 FE2JPL Sentry15302076-207921.6985e-07-7.27-7.360JPL: Computed at 07:00 today Pacific time based on 42 observations spanning 6.0498 days (2020-Mar-18.17316 to 2020-Mar-24.22292). Diameter approximately 0.025 km. from weighted mean H=25.65.
2020 FO1JPL Sentry1530R E M O V E DJPL: Risk listing removed at 1401 UTC today
NEODyS1530R E M O V E D-

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 24 March '20

Times are UTC for when items were noted or added by The Tracking News.

2232Grabbed MPEC 2020-F111 - 2020 EX - see above
2211Noted that JPL Sentry has posted 2020 FR3 as an impact risk - see above
2111Grabbed MPEC 2020-F109 - 2020 FR3 - see above
Grabbed MPEC 2020-F110 - 2020 FS3 - see above
2031Noted Radar Astrometry database update - see above
1908Noted Radar Astrometry database update - see above
1830Grabbed MPEC 2020-F108 - 2018 GY - see above
1530Noted that JPL Sentry has updated its 2020 FE2 risk assessment - see above
Noted that JPL Sentry has posted 2020 FN3 as an impact risk - see above
Noted that NEODyS has posted 2020 FN3 as an impact risk - see above
Noted that JPL Sentry has removed 2020 FO1 as an impact risk - see above
Noted that NEODyS has removed 2020 FO1 as an impact risk - see above
Noted that JPL Sentry has updated its 2020 FZ2 risk assessment - see above
Noted that NEODyS has posted 2020 FZ2 as an impact risk - see above
Grabbed MPEC 2020-F107 - Daily Orbit Update - see above
0532Grabbed MPEC 2020-F104 - 2020 FN3 - see above
Grabbed MPEC 2020-F105 - 2020 FO3 - see above
Grabbed MPEC 2020-F106 - 2020 FP3 - see above
0500Grabbed MPEC 2020-F101 - 2020 FJ3 - see above
Grabbed MPEC 2020-F102 - 2020 FK3 - see above
Grabbed MPEC 2020-F103 - 2020 FM3 - see above
0440Grabbed MPEC 2020-F95 - 2020 FC3 - see above
Grabbed MPEC 2020-F96 - 2020 FD3 - see above
Grabbed MPEC 2020-F97 - 2020 FE3 - see above
Grabbed MPEC 2020-F98 - 2020 FF3 - see above
Grabbed MPEC 2020-F99 - 2020 FG3 - see above
Grabbed MPEC 2020-F100 - 2020 FH3 - see above