Contents  on 26 February '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 26 February '20

The MPC's NEO Confirmation Page has 20 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 20 objects listed. Of these, seven were "one nighters." So far The Tracking News has counted a total of 33 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 26 February '20

Minor Planet Electronic Circulars

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


MPEC 2020-D113 - "20:12 UT" - 2020 DJ3


MPEC 2020-D112 - "15:00 UT" - 2016 YY7


<< DOU on 26 February '20 >>  MPEC 2020-D111 - "12:19 UT" - Daily Orbit Update


MPEC 2020-D110 - "04:09 UT" - 2020 DG3


MPEC 2020-D109 - "02:13 UT" - 2020 DF3


MPEC 2020-D108 - "02:12 UT" - 2020 DE3


MPEC 2020-D107 - "02:09 UT" - 2020 DD3


MPEC 2020-D106 - "01:03 UT" - 2020 DC3


MPEC 2020-D105 - "00:57 UT" - 2020 DB3

Observers  on 26 February '20

A total of 50 observers appear in today's MPECs.

CodeObserver / observatory
U71AHS Obs., 2 in MPEC 2020-D111 -- 2017 BM123, 500094
E23Arcadia Obs. in New South Wales, 1 in MPEC 2020-D108 -- 2020 DE3
H21Astronomical Research Obs. Westfield in Illinois, 3 in MPEC 2020-D111 -- 2020 DR2, 2020 BG8, 2020 BE11
T05ATLAS Haleakala in Hawaii, 3 in MPECs 2020-D106, 2020-D107 & 2020-D108 -- 2020 DE3, 2020 DD3, 2020 DC3
T08ATLAS Mauna Loa in Hawaii, 37 in MPECs 2020-D106, 2020-D108 & 2020-D111 -- 2020 DZ1, 2020 DX, 2020 DR2, 2020 DE3, 2020 DC3, 2020 DA2, 2020 BZ12, 2020 AZ2, 2017 XD, 2013 CL89, 2008 EE5, 2004 CH52, 90075, 65690, 54686, 512244, 492143, 436037, 424965, 374188, 30825, 306462, 190166, 163760, 162038, 154555, 152931, 143947, 141765, 138127, 138013, 11066, 106589, 106538, 8566, 4055, 2059
Z84Calar Alto Schmidt in Spain, 4 in MPECs 2020-D106, 2020-D107, 2020-D108 & 2020-D109 -- 2020 DF3, 2020 DE3, 2020 DD3, 2020 DC3
160Castelmartini Obs. in Italy, 1 in MPEC 2020-D107 -- 2020 DD3
703Catalina Sky Survey (CSS) in Arizona, 19 in MPECs 2020-D105, 2020-D107, 2020-D109 & 2020-D111 -- 2020 DF3, 2020 DD3, 2020 DB3, 2020 BH11, 2020 BE2, 2019 XG1, 2016 GZ215, 2014 YD35, 52768, 511523, 491565, 459386, 416591, 415267, 35107, 18172, 154993, 136993, 1864
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 8 in MPECs 2020-D109, 2020-D110, 2020-D111 & 2020-D113 -- 2020 DY2, 2020 DS, 2020 DJ3, 2020 DG3, 2020 DF3, 2020 CH2, 2020 AJ, 2015 FS332
A77Chante-Perdrix Obs. in France, 1 in MPEC 2020-D105 -- 2020 DB3
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2020-D105 -- 2020 DB3
J04ESA Optical Ground Station in the Canary Islands, 1 in MPEC 2020-D111 -- 2020 DR2
F652Lothar Kurtze in Germany via Faulkes Telescope North in Hawaii, 1 in MPEC 2020-D106 -- 2020 DC3
K83Forti Obs., 1 in MPEC 2020-D111 -- 52768
157Frasso Sabino Obs. in Italy, 1 in MPEC 2020-D111 -- 2020 DP2
X31Galilei Obs., 1 in MPEC 2020-D106 -- 2020 DC3
E89Geyserland Obs. in New Zealand, 5 in MPEC 2020-D111 -- 65690, 18172, 163243, 159454, 5693
K73Gravina Obs. in Italy, 2 in MPEC 2020-D111 -- 2020 BZ12, 2003 OC3
J95Great Shefford Obs. in England, 5 in MPECs 2020-D105, 2020-D106, 2020-D107, 2020-D108 & 2020-D109 -- 2020 DF3, 2020 DE3, 2020 DD3, 2020 DC3, 2020 DB3
C401program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-D111 -- 52768
K92LCO Sutherland B in South Africa, 1 in MPEC 2020-D108 -- 2020 DE3
K93LCO Sutherland C in South Africa, 1 in MPEC 2020-D108 -- 2020 DE3
K95MASTER-II Sutherland in South Africa, 3 in MPEC 2020-D111 -- 2019 UO, 115052, 1864
932McCarthy Obs. in Connecticut, 1 in MPEC 2020-D106 -- 2020 DC3
711McDonald Obs. in Texas, 8 in MPECs 2020-D106, 2020-D107, 2020-D109, 2020-D110 & 2020-D111 -- 2020 DP2, 2020 DG3, 2020 DG2, 2020 DF3, 2020 DD3, 2020 DC3, 2020 CZ2, 2020 BG8
V01Mountainville Obs. in Utah, 2 in MPEC 2020-D111 -- 2020 DF3, 2020 DD3
474Mt. John Obs. in New Zealand, 7 in MPECs 2020-D108 & 2020-D111 -- 2020 DZ1, 2020 DX2, 2020 DE3, 2020 DC, 2020 CA3, 2019 YW3, 2019 UJ15
G96Mt. Lemmon Survey (MLS) in Arizona, 19 in MPECs 2020-D105, 2020-D110, 2020-D111 & 2020-D113 -- 2020 DQ, 2020 DJ3, 2020 DG3, 2020 DB3, 2020 BX3, 2020 BP15, 2018 BP, 2017 DU15, 2016 AX147, 2015 DE200, 2014 YV43, 2005 SQ, 68548, 455322, 36284, 354876, 12923, 5626, 1627
J69North Obs. in England, 1 in MPEC 2020-D107 -- 2020 DD3
Z80Northolt Branch Obs. in England, 4 in MPECs 2020-D106, 2020-D107 & 2020-D111 -- 2020 DZ1, 2020 DD3, 2020 DC3, 154993
F52Pan-STARRS 2 (PS2) in Hawaii, 2 in MPEC 2020-D111 -- 2012 EA2, 2000 WO148
B49Paus Obs. in Spain, 3 in MPECs 2020-D106, 2020-D107 & 2020-D109 -- 2020 DF3, 2020 DD3, 2020 DC3
654Pomona College Table Mtn. Obs. (PCTMO) in southern California, 8 in MPECs 2020-D111 & 2020-D113 -- 2020 DQ, 2020 DJ3, 2019 YF4, 2019 XW2, 2019 SH6, 2016 WE1, 2013 PV2, 2010 AE30
L04ROASTERR-1 in Romania, 3 in MPECs 2020-D106, 2020-D107 & 2020-D109 -- 2020 DF3, 2020 DD3, 2020 DC3
B74Santa Maria de Montmagastrell Obs. in Spain, 1 in MPEC 2020-D111 -- 2020 BE2
C95SATINO-1 in France, 5 in MPECs 2020-D105, 2020-D106, 2020-D107, 2020-D109 & 2020-D111 -- 2020 DF3, 2020 DD3, 2020 DC3, 2020 DB3, 2003 AA3
K96Savelli Obs., 4 in MPECs 2020-D106, 2020-D107, 2020-D108 & 2020-D109 -- 2020 DF3, 2020 DE3, 2020 DD3, 2020 DC3
204Schiaparelli Obs. in Italy, 2 in MPECs 2020-D105 & 2020-D106 -- 2020 DC3, 2020 DB3
033Schwarzschild Obs. in Germany, 19 in MPECs 2020-D105, 2020-D106, 2020-D107, 2020-D109, 2020-D110, 2020-D111 & 2020-D113 -- 2020 DJ3, 2020 DG3, 2020 DF3, 2020 DD3, 2020 DC3, 2020 DB3, 2019 BT2, 2019 BO1, 2018 VG3, 2017 DQ37, 2017 BP31, 2017 BE92, 2017 BB94, 2016 WE1, 2016 FG15, 2015 FS, 2015 BK509, 2011 UC292, 2011 GD60
Q11Shinshiro Obs., 1 in MPEC 2020-D105 -- 2020 DB3
587Sormano Obs. in Italy, 1 in MPEC 2020-D105 -- 2020 DB3
691Spacewatch 0.9m telescope in Arizona, 4 in MPEC 2020-D111 -- 2020 DR2, 2016 AX147, 2015 BK509, 2015 AB
291Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2020-D111 -- 2017 FP2
W34Squirrel Valley Obs. in North Carolina, 1 in MPEC 2020-D106 -- 2020 DC3
I93St. Pardon de Conques Obs. in France, 1 in MPEC 2020-D106 -- 2020 DC3
I52Steward Obs. Mt. Lemmon Station in Arizona, 15 in MPECs 2020-D105, 2020-D107, 2020-D110, 2020-D111 & 2020-D113 -- 2020 DZ1, 2020 DV2, 2020 DJ3, 2020 DG3, 2020 DF3, 2020 DF1, 2020 DD3, 2020 DB3, 2020 CZ2, 2020 CY2, 2020 CN1, 2020 CB3, 2020 CB1, 2020 BX14, 2020 BC16
673!Jana Pittichova Chesley via Table Mtn. Obs. in southern California, 3 in MPECs 2020-D106, 2020-D107 & 2020-D110 -- 2020 DG3, 2020 DD3, 2020 DC3
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 2 in MPECs 2020-D111 & 2020-D112 -- 2020 DC2, 2016 YY7
L01Visnjan Obs. in Croatia, 5 in MPECs 2020-D105, 2020-D106, 2020-D107, 2020-D108 & 2020-D109 -- 2020 DF3, 2020 DE3, 2020 DD3, 2020 DC3, 2020 DB3
I41Zwicky Transient Facility in southern California, 1 in MPEC 2020-D111 -- 2019 LF6
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 26 February '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 DF3JPL Sentry17002053-2103154.0292071e-06-4.70-5.230JPL #2 for the day: Computed at 08:26 today Pacific time based on 44 observations spanning 1.7725 days (2020-Feb-24.44469 to 2020-Feb-26.2172). Diameter approximately 0.051 km. from weighted mean H=24.12.
NEODyS17002053-2115181.54e-06-5.00-5.560NEODyS: "Based on 38 optical observations (of which 1 are rejected as outliers) from 2020-02-24.445 to 2020-02-25.897."
2020 DR2JPL Sentry18022074-211485.093637e-06-2.12-2.370JPL #2 for the day: Computed at 09:30 today Pacific time based on 140 observations spanning 6.0104 days (2020-Feb-20.19345 to 2020-Feb-26.2039). Diameter approximately 0.590 km. from weighted mean H=18.79.
2020 DC2JPL Sentry1700R E M O V E DJPL: Risk listing removed at 1604 UTC today
2020 CD3JPL Sentry01022061-2116200.006182129-5.79-6.250JPL: Computed at 16:41 Feb. 25th Pacific time based on 52 observations spanning 5.7831 days (2020-Feb-15.51114 to 2020-Feb-21.29426). Diameter approximately 0.002 km. from weighted mean H=31.73.

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 26 February '20

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

2030Grabbed MPEC 2020-D113 - 2020 DJ3 - see above
1802Noted that JPL Sentry has updated its 2020 DR2 risk assessment - see above
1700Noted that JPL Sentry has removed 2020 DC2 as an impact risk - see above
Noted that JPL Sentry has updated its 2020 DF3 risk assessment - see above
Noted that NEODyS has posted 2020 DF3 as an impact risk - see above
Noted that JPL Sentry has updated its 2020 DR2 risk assessment - see above
Grabbed MPEC 2020-D111 - Daily Orbit Update - see above
Grabbed MPEC 2020-D112 - 2016 YY7 - see above
0502Noted that JPL Sentry has posted 2020 DF3 as an impact risk - see above
Grabbed MPEC 2020-D106 - 2020 DC3 - see above
Grabbed MPEC 2020-D107 - 2020 DD3 - see above
Grabbed MPEC 2020-D108 - 2020 DE3 - see above
Grabbed MPEC 2020-D109 - 2020 DF3 - see above
Grabbed MPEC 2020-D110 - 2020 DG3 - see above
0102Noted that JPL Sentry has posted 2020 CD3 as an impact risk - see above
Grabbed MPEC 2020-D105 - 2020 DB3 - see above