Contents  on 27 September '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 27 September '20

The MPC's NEO Confirmation Page has 62 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 62 objects listed. Of these, 33 were "one nighters." So far The Tracking News has counted a total of 79 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 27 September '20

Minor Planet Electronic Circulars

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


MPEC 2020-S219 - "21:03 UT" - 2020 ST5


MPEC 2020-S218 - "21:01 UT" - 2020 SS5


MPEC 2020-S217 - "16:52 UT" - 2020 SR5


MPEC 2020-S216 - "16:48 UT" - 2020 SQ5


MPEC 2020-S215 - "16:45 UT" - 2020 SP5


MPEC 2020-S214 - "16:44 UT" - 2020 SO5


<< DOU on 27 September '20 >>  MPEC 2020-S213 - "12:02 UT" - Daily Orbit Update


MPEC 2020-S212 - "11:27 UT" - 2020 SN5


MPEC 2020-S211 - "11:26 UT" - 2020 SM5


MPEC 2020-S210 - "11:24 UT" - 2020 SL5


MPEC 2020-S209 - "01:10 UT" - 2020 SK5

Observers  on 27 September '20

A total of 31 observers appear in today's MPECs.

CodeObserver / observatory
W94AMACS1 in Chile, 1 in MPEC 2020-S218 -- 2020 SS5
E23Arcadia Obs. in New South Wales, 1 in MPEC 2020-S209 -- 2020 SK5
H21Astronomical Research Obs. Westfield in Illinois, 8 in MPECs 2020-S209, 2020-S210, 2020-S211, 2020-S212, 2020-S214, 2020-S215, 2020-S217 & 2020-S218 -- 2020 SS5, 2020 SR5, 2020 SP5, 2020 SO5, 2020 SN5, 2020 SM5, 2020 SL5, 2020 SK5
T05ATLAS Haleakala in Hawaii, 10 in MPECs 2020-S209, 2020-S212, 2020-S213 & 2020-S218 -- 2020 SS5, 2020 SN5, 2020 SK5, 2020 RK2, 2020 RJ3, 2020 PD1, 2020 PC5, 2020 LB3, 2019 GQ3, 2013 PY6
T08ATLAS Mauna Loa in Hawaii, 5 in MPECs 2020-S209 & 2020-S213 -- 2020 SN, 2020 SK5, 2020 OW3, 2004 RF84, 2001 SG286
C77Bernezzo Obs. in Italy, 1 in MPEC 2020-S218 -- 2020 SS5
160Castelmartini Obs. in Italy, 1 in MPEC 2020-S213 -- 2016 NA1
703Catalina Sky Survey (CSS) in Arizona, 10 in MPECs 2020-S213 & 2020-S218 -- 2020 SS5, 2020 RK2, 2020 RJ3, 2020 QM4, 2020 PD1, 2020 PC5, 2020 OA2, 2020 LA2, 2013 PY6, 2007 VX137
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 11 in MPECs 2020-S213 & 2020-S217 -- 2020 SZ3, 2020 SW1, 2020 SR5, 2020 SQ3, 2020 SF4, 2020 RL2, 2020 RC1, 2020 PC7, 2020 KT2, 2018 EB, 2016 TL18
958Dax Obs. in France, 1 in MPEC 2020-S218 -- 2020 SS5
J043program code 3 via ESA Optical Ground Station in the Canary Islands, 1 in MPEC 2020-S213 -- 2007 VX137
C73Galati Obs. in Romania, 1 in MPEC 2020-S213 -- 2020 SW
X31Galilei Obs., 1 in MPEC 2020-S209 -- 2020 SK5
203GiaGa Obs. in Italy, 3 in MPECs 2020-S211, 2020-S214 & 2020-S218 -- 2020 SS5, 2020 SO5, 2020 SM5
J95Great Shefford Obs. in England, 4 in MPECs 2020-S209, 2020-S211, 2020-S212 & 2020-S218 -- 2020 SS5, 2020 SN5, 2020 SM5, 2020 SK5
V01Mountainville Obs. in Utah, 1 in MPEC 2020-S218 -- 2020 SS5
G96Mt. Lemmon Survey (MLS) in Arizona, 40 in MPECs 2020-S210, 2020-S211, 2020-S213, 2020-S214, 2020-S216 & 2020-S217 -- 2020 SY4, 2020 SY2, 2020 SS2, 2020 SR5, 2020 SQ5, 2020 SQ2, 2020 SO5, 2020 SM5, 2020 SL5, 2020 SL3, 2020 SH2, 2020 SC4, 2020 SA3, 2020 RR3, 2020 RP6, 2020 RK2, 2020 QR6, 2020 QQ6, 2020 QP3, 2020 QM4, 2020 PS5, 2020 PR3, 2020 PM4, 2020 PC5, 2020 LJ2, 2020 BS11, 2017 ST20, 2016 TZ56, 2016 HL, 2014 UR116, 2013 PY6, 2012 SH32, 2011 CG2, 2010 TU5, 2010 SF15, 2009 TK12, 2009 JK1, 2006 SA7, 2001 QE34, 1999 SK10
J69North Obs. in England, 1 in MPEC 2020-S218 -- 2020 SS5
Z80Northolt Branch Obs. in England, 2 in MPEC 2020-S213 -- 2013 PY6, 2007 VX137
G34Oberfrauendorf Obs. in Germany, 1 in MPEC 2020-S218 -- 2020 SS5
F51Pan-STARRS 1 (PS1) in Hawaii, 14 in MPECs 2020-S210, 2020-S213, 2020-S215, 2020-S218 & 2020-S219 -- 2020 SV3, 2020 ST5, 2020 SS5, 2020 SP5, 2020 SN1, 2020 SL5, 2020 SL, 2020 RS7, 2020 RB, 2020 QH2, 2020 ML3, 2016 TZ56, 2010 RC12, 2000 PQ27
F52Pan-STARRS 2 (PS2) in Hawaii, 5 in MPECs 2020-S213, 2020-S215 & 2020-S216 -- 2020 SQ5, 2020 SP5, 2020 SL, 2020 QH2, 2018 TS5
L18QOS Obs., 1 in MPEC 2020-S218 -- 2020 SS5
L04ROASTERR-1 in Romania, 1 in MPEC 2020-S218 -- 2020 SS5
H36Sandlot Obs. in Kansas, 1 in MPEC 2020-S212 -- 2020 SN5
C95SATINO-1 in France, 1 in MPEC 2020-S213 -- 2020 NF
204Schiaparelli Obs. in Italy, 3 in MPECs 2020-S209, 2020-S211 & 2020-S218 -- 2020 SS5, 2020 SM5, 2020 SK5
I52Steward Obs. Mt. Lemmon Station in Arizona, 30 in MPECs 2020-S209, 2020-S210, 2020-S211, 2020-S212, 2020-S213, 2020-S214, 2020-S215, 2020-S216 & 2020-S218 -- 2020 SV3, 2020 SS5, 2020 SS4, 2020 SS2, 2020 SR4, 2020 SQ5, 2020 SP5, 2020 SP2, 2020 SO5, 2020 SO4, 2020 SO1, 2020 SN5, 2020 SM5, 2020 SM1, 2020 SL5, 2020 SK5, 2020 SK3, 2020 SH2, 2020 SG3, 2020 SD5, 2020 SD3, 2020 SC4, 2020 SB5, 2020 SB4, 2020 SA5, 2020 SA3, 2020 RS3, 2020 PK2, 2020 PB1, 2020 OK7
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-S213 -- 2016 YT8
718Wiggins Obs. in Utah, 1 in MPEC 2020-S218 -- 2020 SS5
I41Zwicky Transient Facility (ZTF) in southern California, 7 in MPECs 2020-S213 & 2020-S216 -- 2020 SQ5, 2020 PX4, 2020 PF7, 2020 PD1, 2020 NA, 2018 TS5, 2017 XL62
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 27 September '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 SN5JPL Sentry17002043-210961.360298e-06-7.06-7.080JPL: Computed at 05:32 today Pacific time based on 23 observations spanning 1.8514 days (2020-Sep-25.418242 to 2020-Sep-27.269599). Diameter approximately 0.008 km. from weighted mean H=28.19.
2020 SK5NEODyS1700204811.06e-07-5.85-5.850NEODyS: "Based on 28 optical observations (of which 0 are rejected as outliers) from 2020-09-25.342 to 2020-09-26.969."
JPL Sentry04402078-207831.82722e-08-6.94-7.070JPL: Computed at 19:27 Sept. 26th Pacific time based on 28 observations spanning 1.6267 days (2020-Sep-25.34163 to 2020-Sep-26.96836). Diameter approximately 0.085 km. from weighted mean H=23.00.
2020 SY4JPL Sentry17002061-211353.25653e-06-6.73-6.910JPL: Computed at 07:49 today Pacific time based on 21 observations spanning 3.9004 days (2020-Sep-22.38159 to 2020-Sep-26.281975). Diameter approximately 0.011 km. from weighted mean H=27.43.
2020 SU4NEODyS1700207612.77e-11-10.09-10.090NEODyS: "Based on 26 optical observations (of which 0 are rejected as outliers) from 2020-09-23.507 to 2020-09-26.479."
2020 SO1JPL Sentry1700R E M O V E DJPL: Risk listing removed at 1432 UTC today
2020 SQNEODyS17002110-211731.71e-07-8.34-8.70NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2020-09-12.429 to 2020-09-26.245."
2017 SF20JPL Sentry04402034-203413.328e-04-4.61-4.610JPL: Computed at 07:02 Aug. 22nd Pacific time based on 33 observations spanning 17.884 days (2017-Sep-28.36701 to 2017-Oct-16.25147). Diameter approximately 0.007 km. from weighted mean H=28.42.
2016 TTJPL Sentry04402084-209543.9823e-07-7.04-7.410JPL: Computed at 22:53 April 13th of 2017 Pacific time based on 62 observations spanning 31.188 days (2016-Oct-02.31757 to 2016-Nov-02.505288). Diameter approximately 0.021 km. from weighted mean H=26.02.
2014 SR223JPL Sentry04402063-206311.495e-06-6.49-6.490JPL: Computed at 08:06 April 20th of 2019 Pacific time based on 66 observations spanning 11.148 days (2014-Sep-22.296176 to 2014-Oct-03.444392). Diameter approximately 0.015 km. from weighted mean H=26.74.
2011 SE58JPL Sentry04402042-205535.7704e-07-7.21-7.350JPL: Computed at 03:34 April 11th of 2017 Pacific time based on 55 observations spanning 5.6396 days (2011-Sep-21.36854 to 2011-Sep-27.008189). Diameter approximately 0.010 km. from weighted mean H=27.63.

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 27 September '20

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

2110Grabbed MPEC 2020-S218 - 2020 SS5 - see above
Grabbed MPEC 2020-S219 - 2020 ST5 - see above
1700Noted that NEODyS has posted 2020 SK5 as an impact risk - see above
Noted that JPL Sentry has posted 2020 SN5 as an impact risk - see above
Noted that JPL Sentry has removed 2020 SO1 as an impact risk - see above
Noted that NEODyS has updated its 2020 SQ risk assessment - see above
Noted that NEODyS has updated its 2020 SU4 risk assessment - see above
Noted that JPL Sentry has updated its 2020 SY4 risk assessment - see above
Grabbed MPEC 2020-S210 - 2020 SL5 - see above
Grabbed MPEC 2020-S211 - 2020 SM5 - see above
Grabbed MPEC 2020-S212 - 2020 SN5 - see above
Grabbed MPEC 2020-S213 - Daily Orbit Update - see above
Grabbed MPEC 2020-S214 - 2020 SO5 - see above
Grabbed MPEC 2020-S215 - 2020 SP5 - see above
Grabbed MPEC 2020-S216 - 2020 SQ5 - see above
Grabbed MPEC 2020-S217 - 2020 SR5 - see above
0440Noted that JPL Sentry has updated its 2011 SE58 risk assessment - see above
Noted that JPL Sentry has updated its 2014 SR223 risk assessment - see above
Noted that JPL Sentry has updated its 2016 TT risk assessment - see above
Noted that JPL Sentry has updated its 2017 SF20 risk assessment - see above
Noted that JPL Sentry has posted 2020 SK5 as an impact risk - see above
Grabbed MPEC 2020-S209 - 2020 SK5 - see above