Contents  on 28 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.

NEOCP Activity  on 28 March '20

The MPC's NEO Confirmation Page has 19 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had nineteen objects listed. Of these, four were "one nighters." So far The Tracking News has counted a total of 28 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 28 March '20

Minor Planet Electronic Circulars

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


<< DOU on 28 March '20 >>  MPEC 2020-F175 - "12:09 UT" - Daily Orbit Update


MPEC 2020-F174 - "06:09 UT" - 2020 FK6


MPEC 2020-F173 - "06:06 UT" - 2020 FJ6


MPEC 2020-F172 - "06:05 UT" - 2020 FH6


MPEC 2020-F171 - "06:03 UT" - 2020 FG6


MPEC 2020-F170 - "06:01 UT" - 2020 FF6


MPEC 2020-F169 - "06:00 UT" - 2020 FE6


MPEC 2020-F168 - "01:29 UT" - Comet C/2019 S4 (Lemmon)

Observers  on 28 March '20

A total of 37 observers appear in today's MPECs.

CodeObserver / observatory
L2729PREMOTE Obs., 1 in MPEC 2020-F168 -- C/2019 S4
H21Astronomical Research Obs. Westfield in Illinois, 9 in MPECs 2020-F172, 2020-F173 & 2020-F175 -- 2020 FS1, 2020 FO2, 2020 FJ6, 2020 FH6, 2020 FE2, 2020 DX, 2020 DT3, 2020 DM4, 2019 SN10
T05ATLAS Haleakala in Hawaii, 1 in MPEC 2020-F175 -- 2020 FM2
215Buchloe Obs. in Germany, 1 in MPEC 2020-F168 -- C/2019 S4
X74Campo dos Amarais Obs., 1 in MPEC 2020-F175 -- 4954
160Castelmartini Obs. in Italy, 15 in MPEC 2020-F175 -- 2020 EH, 2020 DT3, 2019 XG1, 2010 UE7, 2001 GS2, 85628, 65690, 54686, 52768, 448818, 35107, 276732, 18172, 154555, 137064
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2020-F174 -- 2020 FK6
Z99Clixby Obs. in England, 1 in MPEC 2020-F175 -- 2019 UT9
K87Dettelbach Vineyard Obs. in Germany, 9 in MPEC 2020-F175 -- 2020 FX4, 2020 FW4, 2020 FW2, 2020 FV4, 2020 FV2, 2020 FO2, 2020 FN1, 2020 FE2, 2020 FB
J04ESA Optical Ground Station in the Canary Islands, 1 in MPEC 2020-F172 -- 2020 FH6
W46Foxfire Village Obs., 1 in MPEC 2020-F175 -- 2020 DT3
K88GINOP-KHK in Hungary, 1 in MPEC 2020-F168 -- C/2019 S4
E94Gisborne Obs. in New Zealand, 3 in MPEC 2020-F175 -- 2020 FT2, 2020 BO5, 2020 AZ2
J95Great Shefford Obs. in England, 7 in MPECs 2020-F171, 2020-F172 & 2020-F175 -- 2020 FW5, 2020 FR3, 2020 FN3, 2020 FK4, 2020 FH6, 2020 FG6, 2020 FE2
A17Guidestar Obs. in Germany, 8 in MPEC 2020-F175 -- 2020 FW2, 2020 FR5, 2020 FN1, 2020 DX, 2020 AZ2, 2019 WB6, 2019 UT9, 2019 SH6
Z41Irydeo Obs., 1 in MPEC 2020-F175 -- 2020 FE2
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2020-F168 -- C/2019 S4
1861program code 1 via Kitab Obs., 1 in MPEC 2020-F175 -- 2015 FC35
C401program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-F175 -- 52768
Z43Landehen Obs., 1 in MPEC 2020-F175 -- 9400
568^R. Wainscoat on Mauna Kea in Hawaii, 1 in MPEC 2020-F170 -- 2020 FF6
568_Marco Micheli on Mauna Kea in Hawaii, 1 in MPEC 2020-F168 -- C/2019 S4
711McDonald Obs. in Texas, 1 in MPEC 2020-F168 -- C/2019 S4
G96Mt. Lemmon Survey (MLS) in Arizona, 5 in MPECs 2020-F168, 2020-F171, 2020-F172, 2020-F173 & 2020-F174 -- 2020 FK6, 2020 FJ6, 2020 FH6, 2020 FG6, C/2019 S4
F51Pan-STARRS 1 (PS1) in Hawaii, 2 in MPECs 2020-F169 & 2020-F170 -- 2020 FF6, 2020 FE6
F52Pan-STARRS 2 (PS2) in Hawaii, 2 in MPECs 2020-F169 & 2020-F173 -- 2020 FJ6, 2020 FE6
C95SATINO-1 in France, 2 in MPECs 2020-F168 & 2020-F175 -- 2019 YA, C/2019 S4
033Schwarzschild Obs. in Germany, 16 in MPECs 2020-F169, 2020-F170, 2020-F172, 2020-F173 & 2020-F175 -- 2020 FJ6, 2020 FH6, 2020 FF6, 2020 FE6, 2020 EM, 2017 FE90, 2017 DQ37, 2017 BP31, 2017 BB94, 2016 WE1, 2016 FG15, 2016 EE157, 2016 EE156, 2015 FC35, 2011 GD60, 2008 FG
Q11Shinshiro Obs., 1 in MPEC 2020-F168 -- C/2019 S4
W88!W.F. Cashwell in Nevada via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-F175 -- 2013 AO27
W885M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-F175 -- 2015 FC35
I93St. Pardon de Conques Obs. in France, 1 in MPEC 2020-F172 -- 2020 FH6
I52Steward Obs. Mt. Lemmon Station in Arizona, 5 in MPECs 2020-F168, 2020-F171, 2020-F172, 2020-F174 & 2020-F175 -- 2020 FW4, 2020 FK6, 2020 FH6, 2020 FG6, C/2019 S4
461SZTE Asteroid Program in Hungary, 1 in MPEC 2020-F168 -- C/2019 S4
A16Tentlingen Obs. in Switzerland, 5 in MPEC 2020-F175 -- 2020 DT3, 2020 DM4, 492143, 388945, 7088
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 2 in MPECs 2020-F170 & 2020-F175 -- 2020 FM1, 2020 FF6
L01Visnjan Obs. in Croatia, 5 in MPECs 2020-F168, 2020-F169, 2020-F171, 2020-F172 & 2020-F173 -- 2020 FJ6, 2020 FH6, 2020 FG6, 2020 FE6, C/2019 S4
Z92West Park Obs. in England, 1 in MPEC 2020-F175 -- 52768
C51WISE in Earth polar orbit, 3 in MPEC 2020-F175 -- 90075, 401857, 18882
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 28 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 FK6NEODyS17002054-21181405.92e-05-5.76-6.720NEODyS: "Based on 10 optical observations (of which 0 are rejected as outliers) from 2020-03-16.280 to 2020-03-17.131."
JPL Sentry16152054-21171046.05695645e-05-5.74-6.710JPL: Computed at 00:37 today Pacific time based on 10 observations spanning .85107 days (2020-Mar-16.27896 to 2020-Mar-17.13003). Diameter approximately 0.008 km. from weighted mean H=28.07.
2020 FR3JPL Sentry1615R E M O V E DJPL: Risk listing removed at 1400 UTC today
2020 FN3NEODyS16162091-2116171.98e-06-5.78-6.190NEODyS: "Based on 32 optical observations (of which 1 are rejected as outliers) from 2020-03-22.368 to 2020-03-27.962."
JPL Sentry16152048-2117191.2055381e-06-5.97-6.350JPL: Computed at 07:10 today Pacific time based on 32 observations spanning 5.5935 days (2020-Mar-22.36744 to 2020-Mar-27.960906). Diameter approximately 0.047 km. from weighted mean H=24.31.
2020 FM1NEODyS16162106-211561.92e-06-8.21-8.640NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2020-03-16.257 to 2020-03-24.444."
JPL Sentry16152071-210941.4203e-06-8.30-8.530JPL: Computed at 07:06 today Pacific time based on 20 observations spanning 8.1879 days (2020-Mar-16.25579 to 2020-Mar-24.443693). Diameter approximately 0.005 km. from weighted mean H=29.32.

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 28 March '20

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

1700Noted that NEODyS has posted 2020 FK6 as an impact risk - see above
1616Noted that NEODyS has updated its 2020 FM1 risk assessment - see above
Noted that NEODyS has updated its 2020 FN3 risk assessment - see above
1615Noted that JPL Sentry has posted 2020 FK6 as an impact risk - see above
Noted that JPL Sentry has updated its 2020 FM1 risk assessment - see above
Noted that JPL Sentry has updated its 2020 FN3 risk assessment - see above
Noted that JPL Sentry has removed 2020 FR3 as an impact risk - see above
Grabbed MPEC 2020-F169 - 2020 FE6 - see above
Grabbed MPEC 2020-F170 - 2020 FF6 - see above
Grabbed MPEC 2020-F171 - 2020 FG6 - see above
Grabbed MPEC 2020-F172 - 2020 FH6 - see above
Grabbed MPEC 2020-F173 - 2020 FJ6 - see above
Grabbed MPEC 2020-F174 - 2020 FK6 - see above
Grabbed MPEC 2020-F175 - Daily Orbit Update - see above
0431Grabbed MPEC 2020-F168 - Comet C/2019 S4 (Lemmon) - see above