Contents  on 20 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 20 September '20

The MPC's NEO Confirmation Page has 72 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 72 objects listed. Of these, 46 were "one nighters." So far The Tracking News has counted a total of 104 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 20 September '20

Minor Planet Electronic Circulars

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


MPEC 2020-S123 - "23:54 UT" - 2020 SL2


MPEC 2020-S122 - "23:50 UT" - 2020 SK2


MPEC 2020-S121 - "23:47 UT" - 2020 SJ2


MPEC 2020-S120 - "23:44 UT" - 2020 SH2


MPEC 2020-S119 - "22:24 UT" - Comet C/2020 S3 (Erasmus)


MPEC 2020-S118 - "18:41 UT" - 2017 RM122


MPEC 2020-S117 - "15:00 UT" - 2018 SQ3


<< DOU on 20 September '20 >>  MPEC 2020-S116 - "12:08 UT" - Daily Orbit Update


MPEC 2020-S115 - "11:55 UT" - 2020 SB2


MPEC 2020-S114 - "11:51 UT" - 2020 SA2


MPEC 2020-S113 - "11:47 UT" - 2020 SZ1


MPEC 2020-S112 - "11:45 UT" - 2020 SY1


MPEC 2020-S111 - "11:43 UT" - 2020 SX1


MPEC 2020-S110 - "11:42 UT" - 2020 RZ9


MPEC 2020-S109 - "11:40 UT" - 2020 SW1


MPEC 2020-S108 - "11:35 UT" - 2015 FR432


MPEC 2020-S107 - "11:32 UT" - 2020 ST1


MPEC 2020-S106 - "11:29 UT" - 2020 SR1


MPEC 2020-S105 - "03:38 UT" - Comet C/2020 S2 (Panstarrs)

Observers  on 20 September '20

A total of 57 observers appear in today's MPECs.

CodeObserver / observatory
A44Altschwendt Obs. in Austria, 2 in MPECs 2020-S120 & 2020-S121 -- 2020 SJ2, 2020 SH2
H21Astronomical Research Obs. Westfield in Illinois, 8 in MPECs 2020-S106, 2020-S107, 2020-S109, 2020-S111, 2020-S112, 2020-S113, 2020-S114 & 2020-S115 -- 2020 SZ1, 2020 SY1, 2020 SX1, 2020 SW1, 2020 ST1, 2020 SR1, 2020 SB2, 2020 SA2
T05ATLAS Haleakala in Hawaii, 1 in MPEC 2020-S116 -- 2020 PD1
T08ATLAS Mauna Loa in Hawaii, 7 in MPECs 2020-S116, 2020-S119 & 2020-S120 -- 2020 SH2, C/2020 S3, 2020 QU6, 2020 QL7, 2013 UX14, 2010 JV153, 2005 QS10
G17BAS Obs., 1 in MPEC 2020-S116 -- 2020 PM7
160Castelmartini Obs. in Italy, 5 in MPEC 2020-S116 -- 2020 SO1, 2020 RE1, 2020 PC5, 2020 LB3, 2013 PY6
703Catalina Sky Survey (CSS) in Arizona, 6 in MPECs 2020-S108 & 2020-S116 -- 2020 SB, 2020 RQ1, 2015 FR432, 2012 DP8, 2011 GO27, 2000 PQ27
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 4 in MPECs 2020-S107, 2020-S111, 2020-S112 & 2020-S116 -- 2020 SY1, 2020 SX1, 2020 ST1, 2020 SL
970Chelmsford Obs. in England, 1 in MPEC 2020-S119 -- C/2020 S3
Z99Clixby Obs. in England, 1 in MPEC 2020-S116 -- 2020 SO1
958Dax Obs. in France, 1 in MPEC 2020-S116 -- 2020 RF6
K87Dettelbach Vineyard Obs. in Germany, 20 in MPEC 2020-S116 -- 2020 SO1, 2020 RF, 2020 RE1, 2020 RE, 2020 RD5, 2020 QM4, 2020 PM7, 2020 PD1, 2020 PC5, 2020 HP8, 2018 RV3, 2016 NV38, 2013 UX14, 2013 PY6, 2012 SH32, 2012 DP8, 2011 GO27, 2007 VX137, 2004 QD3, 2000 PQ27
J042program code 2 via ESA Optical Ground Station (ESA OGS) in the Canary Islands, 5 in MPECs 2020-S114 & 2020-S116 -- 2020 SP, 2020 SO1, 2020 SM1, 2020 SC, 2020 SA2
J044program code 4 via ESA Optical Ground Station (ESA OGS) in the Canary Islands, 4 in MPECs 2020-S116 & 2020-S119 -- 2020 SP, C/2020 S3, 2020 RM6, 2020 QN1
J045program code 5 via ESA Optical Ground Station in the Canary Islands, 1 in MPEC 2020-S117 -- 2018 SQ3
734Farpoint Obs. in Kansas, 2 in MPECs 2020-S107 & 2020-S115 -- 2020 ST1, 2020 SB2
595Farra d'Isonzo Obs. in Italy, 2 in MPECs 2020-S120 & 2020-S121 -- 2020 SJ2, 2020 SH2
L34Galhassin Robotic Telescope, 2 in MPECs 2020-S120 & 2020-S121 -- 2020 SJ2, 2020 SH2
K88GINOP-KHK in Hungary, 1 in MPEC 2020-S119 -- C/2020 S3
J95Great Shefford Obs. in England, 6 in MPECs 2020-S113, 2020-S114, 2020-S116, 2020-S120, 2020-S121 & 2020-S122 -- 2020 SZ1, 2020 SK2, 2020 SJ2, 2020 SH2, 2020 SA2, 2020 RY7
A17Guidestar Obs. in Germany, 1 in MPEC 2020-S121 -- 2020 SJ2
L63HOB Obs., 1 in MPEC 2020-S116 -- 2020 RA6
C43Hoyerswerda Obs. in Germany, 1 in MPEC 2020-S121 -- 2020 SJ2
H06iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2020-S119 -- C/2020 S3
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 2 in MPECs 2020-S105 & 2020-S119 -- C/2020 S3, C/2020 S2
Q62iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-S119 -- C/2020 S3
2461program code 1 via KLENOT in the Czech Republic, 6 in MPECs 2020-S105, 2020-S107, 2020-S115, 2020-S120, 2020-S121 & 2020-S122 -- 2020 ST1, 2020 SK2, 2020 SJ2, 2020 SH2, 2020 SB2, C/2020 S2
Z43Landehen Obs., 2 in MPEC 2020-S116 -- 2020 SB, 2020 RE1
130Lumezzane Obs. in Italy, 2 in MPEC 2020-S116 -- 2020 PD1, 2007 VX137
568^R. Wainscoat on Mauna Kea in Hawaii, 2 in MPECs 2020-S105 & 2020-S110 -- C/2020 S2, 2020 RZ9
711McDonald Obs. in Texas, 1 in MPEC 2020-S105 -- C/2020 S2
V01Mountainville Obs. in Utah, 1 in MPEC 2020-S119 -- C/2020 S3
474Mt. John Obs. in New Zealand, 17 in MPEC 2020-S116 -- 2020 RW7, 2020 RW6, 2020 RT7, 2020 RM2, 2020 RF6, 2020 RF4, 2020 RC7, 2020 QY3, 2020 QT3, 2020 QM1, 2020 QM, 2020 PY1, 2020 PH5, 2020 OX6, 2020 OT6, 2020 OS7, 2020 MS
G96Mt. Lemmon Survey (MLS) in Arizona, 28 in MPECs 2020-S105, 2020-S106, 2020-S107, 2020-S108, 2020-S109, 2020-S111, 2020-S112, 2020-S113, 2020-S114, 2020-S116, 2020-S121, 2020-S122 & 2020-S123 -- 2020 SZ1, 2020 SY1, 2020 SX1, 2020 SW1, 2020 ST1, 2020 SR1, 2020 SL2, 2020 SK2, 2020 SJ2, 2020 SA2, C/2020 S2, 2020 RX7, 2020 QW2, 2020 QR6, 2020 PX4, 2020 PX1, 2020 PM4, 2020 PD1, 2020 PC5, 2020 OM3, 2020 OA2, 2020 MC4, 2020 LR, 2016 TZ56, 2016 ED85, 2015 FR432, 2013 QL10, 2002 GZ8
C47Nonndorf Obs. in Austria, 1 in MPEC 2020-S121 -- 2020 SJ2
J69North Obs. in England, 2 in MPECs 2020-S120 & 2020-S121 -- 2020 SJ2, 2020 SH2
Z80Northolt Branch Obs. in England, 5 in MPECs 2020-S116 & 2020-S121 -- 2020 SO1, 2020 SM1, 2020 SJ2, 2016 ED85, 2012 DP8
G34Oberfrauendorf Obs. in Germany, 1 in MPEC 2020-S121 -- 2020 SJ2
F51Pan-STARRS 1 (PS1) in Hawaii, 16 in MPECs 2020-S105, 2020-S106, 2020-S108, 2020-S109, 2020-S110, 2020-S112, 2020-S115, 2020-S116, 2020-S118, 2020-S120, 2020-S122 & 2020-S123 -- 2020 SY1, 2020 SW1, 2020 SR1, 2020 SL2, 2020 SK2, 2020 SH2, 2020 SB2, C/2020 S2, 2020 RZ9, 2020 ML3, 2019 RE3, 2017 RM122, 2015 FR432, 2013 TS5, 2009 QC36, 2000 TU28
F52Pan-STARRS 2 (PS2) in Hawaii, 9 in MPECs 2020-S105, 2020-S106, 2020-S107, 2020-S109, 2020-S110, 2020-S116, 2020-S120 & 2020-S122 -- 2020 SW1, 2020 ST1, 2020 SR1, 2020 SK2, 2020 SH2, C/2020 S2, 2020 RZ9, 2020 AK, 2013 TV144
B49Paus Obs. in Spain, 2 in MPECs 2020-S114 & 2020-S116 -- 2020 SO1, 2020 SA2
V93Pin Oak Obs., 2 in MPEC 2020-S116 -- 2013 PY6, 2012 DP8
L18QOS Obs., 5 in MPEC 2020-S116 -- 2020 PM7, 2016 NV38, 2016 ED85, 2013 UX14, 2012 DP8
L04ROASTERR-1 in Romania, 2 in MPECs 2020-S119 & 2020-S121 -- 2020 SJ2, C/2020 S3
L07Salvatore di Giacomo Obs., 1 in MPEC 2020-S119 -- C/2020 S3
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2020-S114 -- 2020 SA2
H36Sandlot Obs. in Kansas, 4 in MPECs 2020-S105, 2020-S107, 2020-S113 & 2020-S115 -- 2020 SZ1, 2020 ST1, 2020 SB2, C/2020 S2
C95SATINO-1 in France, 1 in MPEC 2020-S116 -- 2013 UX14
204Schiaparelli Obs. in Italy, 1 in MPEC 2020-S105 -- C/2020 S2
G409B. Lutkenhoner in Germany via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2020-S119 -- C/2020 S3
W881Tony Evans in Portugal via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-S116 -- 2020 SN
W883B. Lutkenhoner in Germany via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-S119 -- C/2020 S3
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2020-S108 -- 2015 FR432
I52Steward Obs. Mt. Lemmon Station in Arizona, 28 in MPECs 2020-S107, 2020-S111, 2020-S113, 2020-S114, 2020-S115, 2020-S116, 2020-S121, 2020-S122 & 2020-S123 -- 2020 SZ1, 2020 SX1, 2020 ST1, 2020 SL2, 2020 SK2, 2020 SJ2, 2020 SG1, 2020 SF, 2020 SC, 2020 SB2, 2020 SA2, 2020 SA1, 2020 RX3, 2020 RV3, 2020 RU7, 2020 RT4, 2020 RT3, 2020 RS3, 2020 RR2, 2020 RQ6, 2020 RL3, 2020 RL2, 2020 RG6, 2020 RF4, 2020 RA7, 2020 RA3, 2020 OK7, 2020 HO8
A71Stixendorf Obs. in Austria, 1 in MPEC 2020-S119 -- C/2020 S3
K62Teplice Obs. in the Czech Republic, 3 in MPECs 2020-S120, 2020-S121 & 2020-S122 -- 2020 SK2, 2020 SJ2, 2020 SH2
W33Transit Dreams Obs., 16 in MPEC 2020-S116 -- 2020 RR, 2020 RJ, 2020 RF, 2020 RB, 2020 QV6, 2020 QO4, 2020 QH4, 2020 MP, 90147, 85804, 428086, 382625, 23187, 136900, 105140, 4947
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-S116 -- 2020 RR4
L01Visnjan Obs. in Croatia, 11 in MPECs 2020-S105, 2020-S110, 2020-S111, 2020-S113, 2020-S114, 2020-S115, 2020-S116, 2020-S119, 2020-S120, 2020-S121 & 2020-S123 -- 2020 SZ1, 2020 SX1, 2020 SO1, 2020 SL2, 2020 SJ2, 2020 SH2, 2020 SB2, 2020 SA2, C/2020 S3, C/2020 S2, 2020 RZ9
N88Xingming Obs. #3, 4 in MPECs 2020-S113, 2020-S114 & 2020-S116 -- 2020 SZ1, 2020 SO1, 2020 SM1, 2020 SA2
I41Zwicky Transient Facility (ZTF) in southern California, 3 in MPEC 2020-S116 -- 2020 PX4, 2020 LB3, 2000 TU28
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 20 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 SO1NEODyS23042092-2118102.17e-06-7.12-7.220NEODyS: "Based on 47 optical observations (of which 0 are rejected as outliers) from 2020-09-17.401 to 2020-09-20.076."
JPL Sentry17002101-210629.712e-06-6.46-6.540JPL: Computed at 07:24 today Pacific time based on 47 observations spanning 2.6744 days (2020-Sep-17.40029 to 2020-Sep-20.0747). Diameter approximately 0.013 km. from weighted mean H=27.13.
2020 SPNEODyS23042079-210142.49e-07-7.95-8.360NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2020-09-16.174 to 2020-09-19.870."
JPL Sentry17002079-2117147.823707e-06-6.54-6.890JPL: Computed at 07:27 today Pacific time based on 22 observations spanning 3.6965 days (2020-Sep-16.17272 to 2020-Sep-19.86924). Diameter approximately 0.013 km. from weighted mean H=27.04.
2020 SCNEODyS23042079-209223.63e-08-8.07-8.120NEODyS: "Based on 70 optical observations (of which 1 are rejected as outliers) from 2020-09-17.452 to 2020-09-20.358."
JPL Sentry17002088-209231.186137e-07-7.60-7.800JPL: Computed at 07:23 today Pacific time based on 70 observations spanning 2.9061 days (2020-Sep-17.450866 to 2020-Sep-20.35697). Diameter approximately 0.016 km. from weighted mean H=26.69.
2020 RB7JPL Sentry17002105-211751.860665e-07-7.90-8.030JPL: Computed at 08:29 Sept. 18th Pacific time based on 44 observations spanning 2.6175 days (2020-Sep-15.405818 to 2020-Sep-18.023282). Diameter approximately 0.012 km. from weighted mean H=27.29.
2020 RM6NEODyS2304R E M O V E D-
2020 RR4NEODyS23042081-208223.69e-07-6.97-7.00NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2020-09-09.454 to 2020-09-16.477."
JPL Sentry17002082-208213.550e-07-6.93-6.930JPL: Computed at 07:18 today Pacific time based on 19 observations spanning 7.0230 days (2020-Sep-09.45312 to 2020-Sep-16.476097). Diameter approximately 0.023 km. from weighted mean H=25.87.
2020 QN1NEODyS23042099-211793.03e-07-6.01-6.190NEODyS: "Based on 45 optical observations (of which 0 are rejected as outliers) from 2020-07-31.389 to 2020-09-19.900."
JPL Sentry17002099-211933.0062e-07-5.98-6.120JPL: Computed at 07:10 today Pacific time based on 45 observations spanning 50.511 days (2020-Jul-31.38815 to 2020-Sep-19.89921). Diameter approximately 0.080 km. from weighted mean H=23.13.
2019 SU2JPL Sentry17002095-209622.4707e-07-9.23-9.360JPL: Computed at 07:30 Oct. 1st of 2019 Pacific time based on 16 observations spanning 4.1296 days (2019-Sep-22.37234 to 2019-Sep-26.501941). Diameter approximately 0.003 km. from weighted mean H=30.05.
2012 BP123JPL Sentry17002021-21173061.3384781e-06-6.70-7.310JPL: Computed at 09:34 April 8th of 2017 Pacific time based on 13 observations spanning .91365 days (2012-Jan-31.31538 to 2012-Feb-01.22903). Diameter approximately 0.013 km. from weighted mean H=27.11.
2009 FZ4JPL Sentry17002020-21163972.3792468e-06-5.17-5.890JPL: Computed at 22:33 April 7th of 2017 Pacific time based on 11 observations spanning .59999 days (2009-Mar-19.36974 to 2009-Mar-19.96973). Diameter approximately 0.031 km. from weighted mean H=25.21.
2007 RC20JPL Sentry17002091-209111.237e-09-10.05-10.050JPL: Computed at 06:36 April 9th of 2017 Pacific time based on 8 observations spanning .85558 days (2007-Sep-14.37291 to 2007-Sep-15.22849). Diameter approximately 0.016 km. from weighted mean H=26.66.
2005 SO1JPL Sentry17002110-211093.86933e-06-5.86-6.370JPL: Computed at 20:53 April 12th of 2017 Pacific time based on 55 observations spanning 14.180 days (2005-Sep-23.26647 to 2005-Oct-07.44602). Diameter approximately 0.028 km. from weighted mean H=25.41.

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 20 September '20

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

2358Grabbed MPEC 2020-S120 - 2020 SH2 - see above
Grabbed MPEC 2020-S121 - 2020 SJ2 - see above
Grabbed MPEC 2020-S122 - 2020 SK2 - see above
Grabbed MPEC 2020-S123 - 2020 SL2 - see above
2304Noted that NEODyS has updated its 2020 QN1 risk assessment - see above
Noted that NEODyS has removed 2020 RM6 as an impact risk - see above
Noted that NEODyS has updated its 2020 RR4 risk assessment - see above
Noted that NEODyS has updated its 2020 SC risk assessment - see above
Noted that NEODyS has posted 2020 SO1 as an impact risk - see above
Noted that NEODyS has updated its 2020 SP risk assessment - see above
Grabbed MPEC 2020-S119 - Comet C/2020 S3 (Erasmus) - see above
1940Grabbed MPEC 2020-S118 - 2017 RM122 - see above
1700Noted that JPL Sentry has updated its 2005 SO1 risk assessment - see above
Noted that JPL Sentry has updated its 2007 RC20 risk assessment - see above
Noted that JPL Sentry has updated its 2009 FZ4 risk assessment - see above
Noted that JPL Sentry has updated its 2012 BP123 risk assessment - see above
Noted that JPL Sentry has updated its 2019 SU2 risk assessment - see above
Noted that JPL Sentry has updated its 2020 QN1 risk assessment - see above
Noted that JPL Sentry has updated its 2020 RB7 risk assessment - see above
Noted that JPL Sentry has updated its 2020 RR4 risk assessment - see above
Noted that JPL Sentry has updated its 2020 SC risk assessment - see above
Noted that JPL Sentry has updated its 2020 SO1 risk assessment - see above
Noted that JPL Sentry has updated its 2020 SP risk assessment - see above
Grabbed MPEC 2020-S106 - 2020 SR1 - see above
Grabbed MPEC 2020-S107 - 2020 ST1 - see above
Grabbed MPEC 2020-S108 - 2015 FR432 - see above
Grabbed MPEC 2020-S109 - 2020 SW1 - see above
Grabbed MPEC 2020-S110 - 2020 RZ9 - see above
Grabbed MPEC 2020-S111 - 2020 SX1 - see above
Grabbed MPEC 2020-S112 - 2020 SY1 - see above
Grabbed MPEC 2020-S113 - 2020 SZ1 - see above
Grabbed MPEC 2020-S114 - 2020 SA2 - see above
Grabbed MPEC 2020-S115 - 2020 SB2 - see above
Grabbed MPEC 2020-S116 - Daily Orbit Update - see above
Grabbed MPEC 2020-S117 - 2018 SQ3 - see above
0515Grabbed MPEC 2020-S105 - Comet C/2020 S2 (Panstarrs) - see above