Contents  on 21 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 21 September '20

The MPC's NEO Confirmation Page has 57 listings

When last checked at 2331 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 57 objects listed. Of these, 39 were "one nighters." So far The Tracking News has counted a total of 82 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 21 September '20

Minor Planet Electronic Circulars

As of last check at 2331 UTC, there have been 23 MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2020-S146 - "20:27 UT" - 2020 SA3


MPEC 2020-S145 - "15:02 UT" - 2018 FB1


MPEC 2020-S144 - "15:02 UT" - 2017 QQ35


MPEC 2020-S143 - "15:01 UT" - 2013 UY


MPEC 2020-S142 - "15:01 UT" - 2003 QQ10


MPEC 2020-S141 - "14:19 UT" - 2020 RE10


MPEC 2020-S140 - "14:17 UT" - 2020 SZ2


<< DOU on 21 September '20 >>  MPEC 2020-S139 - "12:09 UT" - Daily Orbit Update


MPEC 2020-S138 - "11:45 UT" - 2020 SY2


MPEC 2020-S137 - "11:42 UT" - 2020 SX2


MPEC 2020-S136 - "11:38 UT" - 2020 SW2


MPEC 2020-S135 - "11:31 UT" - 2020 SV2


MPEC 2020-S134 - "10:51 UT" - 2020 QX7


MPEC 2020-S133 - "10:45 UT" - 2020 SU2


MPEC 2020-S132 - "06:02 UT" - 2020 ST2


MPEC 2020-S131 - "04:02 UT" - 2020 RD10


MPEC 2020-S130 - "03:59 UT" - 2020 SS2


MPEC 2020-S129 - "03:58 UT" - 2020 SR2


MPEC 2020-S128 - "03:57 UT" - 2020 SQ2


MPEC 2020-S127 - "03:56 UT" - 2020 SP2


MPEC 2020-S126 - "03:55 UT" - 2020 SO2


MPEC 2020-S125 - "02:18 UT" - 2020 SN2


MPEC 2020-S124 - "00:26 UT" - 2020 SM2

Observers  on 21 September '20

A total of 46 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 10 in MPECs 2020-S125, 2020-S127, 2020-S130, 2020-S133, 2020-S136, 2020-S137, 2020-S138, 2020-S139, 2020-S140 & 2020-S146 -- 2020 SZ2, 2020 SY2, 2020 SX2, 2020 SW2, 2020 SU2, 2020 SS2, 2020 SR2, 2020 SP2, 2020 SN2, 2020 SA3
T08ATLAS Mauna Loa in Hawaii, 12 in MPEC 2020-S139 -- 2020 RF, 2020 PM7, 2020 LB3, 2019 GQ3, 2016 NV38, 2013 PY6, 2012 SH32, 2011 CG2, 2007 VX137, 2006 SS19, 2004 QD3, 2002 TS67
U63Burnt Tree Hill Obs., 2 in MPECs 2020-S129 & 2020-S146 -- 2020 SR2, 2020 SA3
Z842E. Schwab via Calar Alto Schmidt in Spain, 2 in MPECs 2020-S142 & 2020-S144 -- 2017 QQ35, 2003 QQ10
160Castelmartini Obs. in Italy, 8 in MPEC 2020-S139 -- 2020 RH6, 2020 RF, 2020 RD5, 2020 PD1, 2016 NV38, 2016 ED85, 2011 GO27, 2007 VX137
703Catalina Sky Survey (CSS) in Arizona, 13 in MPEC 2020-S139 -- 2020 SM1, 2020 SH2, 2020 RE1, 2020 RE, 2020 RB, 2020 QM4, 2020 PM4, 2020 PD1, 2020 PC5, 2020 HZ9, 2020 BW14, 2016 TZ56, 2016 ED85
V06Catalina Sky Survey Kuiper Telescope in Arizona, 1 in MPEC 2020-S125 -- 2020 SN2
G58Chabot Obs. in northern California, 3 in MPEC 2020-S139 -- 2020 PX1, 2020 OA2, 2004 RF84
Z99Clixby Obs. in England, 1 in MPEC 2020-S146 -- 2020 SA3
K87Dettelbach Vineyard Obs. in Germany, 14 in MPEC 2020-S139 -- 2020 SJ2, 2020 SB, 2020 RH6, 2020 RE, 2020 RD5, 2020 QM4, 2020 PM7, 2020 PD1, 2020 OC8, 2020 LA2, 2016 NV38, 2012 DP8, 2011 GO27, 2004 QD3
J042program code 2 via ESA Optical Ground Station (ESA OGS) in the Canary Islands, 6 in MPECs 2020-S138 & 2020-S139 -- 2020 SY2, 2020 SW, 2020 SO, 2020 SM2, 2020 SH, 2020 OM3
J044program code 4 via ESA Optical Ground Station (ESA OGS) in the Canary Islands, 3 in MPECs 2020-S133, 2020-S139 & 2020-S140 -- 2020 SZ2, 2020 SU2, 2020 SJ2
J045program code 5 via ESA Optical Ground Station (ESA OGS) in the Canary Islands, 2 in MPECs 2020-S142 & 2020-S144 -- 2017 QQ35, 2003 QQ10
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2020-S146 -- 2020 SA3
W46Foxfire Village Obs., 1 in MPEC 2020-S139 -- 2020 OA2
C18Frasnes-Lez-Anvaing Obs. in Belgium, 1 in MPEC 2020-S139 -- 2016 ED85
L34Galhassin Robotic Telescope, 2 in MPEC 2020-S139 -- 2020 SO1, 2020 SM1
K88GINOP-KHK in Hungary, 2 in MPECs 2020-S139 & 2020-S146 -- 2020 SA3, 2020 RH3
U55Golden Ears Obs., 1 in MPEC 2020-S146 -- 2020 SA3
J95Great Shefford Obs. in England, 8 in MPECs 2020-S124, 2020-S126, 2020-S127, 2020-S128, 2020-S129, 2020-S139, 2020-S140 & 2020-S146 -- 2020 SZ2, 2020 SR2, 2020 SQ2, 2020 SP2, 2020 SO2, 2020 SM2, 2020 SA3, 2020 RQ6
N51GROWTH India Telescope, 1 in MPEC 2020-S139 -- 420302
A17Guidestar Obs. in Germany, 5 in MPECs 2020-S139 & 2020-S146 -- 2020 SA3, 2020 RR, 2020 RE1, 2020 QM4, 2020 PC5
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 4 in MPEC 2020-S139 -- 2020 RB, 2020 QS5, 2020 QH4, 2011 ES4
2461program code 1 via KLENOT in the Czech Republic, 21 in MPECs 2020-S127, 2020-S130, 2020-S139, 2020-S140 & 2020-S146 -- 2020 SZ2, 2020 SS2, 2020 SP2, 2020 SO1, 2020 SN, 2020 SM1, 2020 SM, 2020 SH, 2020 SD, 2020 SA3, 2020 RU7, 2020 RR3, 2020 RR, 2020 RQ6, 2020 RN6, 2020 RK2, 2020 RH6, 2020 RH3, 2020 RE1, 2020 RE, 2020 RB6
130Lumezzane Obs. in Italy, 1 in MPEC 2020-S139 -- 2020 PC5
H01Magdalena Ridge Obs. (MRO) in New Mexico, 6 in MPECs 2020-S129, 2020-S132, 2020-S135, 2020-S136, 2020-S137 & 2020-S138 -- 2020 SY2, 2020 SX2, 2020 SW2, 2020 SV2, 2020 ST2, 2020 SR2
L52MASTER Tavrida, 1 in MPEC 2020-S139 -- 2016 ED85
568^R. Wainscoat on Mauna Kea in Hawaii, 1 in MPEC 2020-S131 -- 2020 RD10
474Mt. John Obs. in New Zealand, 13 in MPECs 2020-S132, 2020-S139, 2020-S143 & 2020-S145 -- 2020 ST2, 2020 RS, 2020 QU4, 2020 QT3, 2020 PY1, 2020 PX3, 2020 PR4, 2020 PP2, 2020 OS7, 2020 OM5, 2020 OF7, 2018 FB1, 2013 UY
G96Mt. Lemmon Survey (MLS) in Arizona, 44 in MPECs 2020-S124, 2020-S125, 2020-S126, 2020-S127, 2020-S128, 2020-S129, 2020-S133, 2020-S134, 2020-S135, 2020-S139, 2020-S140 & 2020-S141 -- 2020 SZ2, 2020 SV2, 2020 SU2, 2020 SS2, 2020 SR2, 2020 SQ2, 2020 SP2, 2020 SO2, 2020 SN2, 2020 SM2, 2020 SL1, 2020 RR3, 2020 RR, 2020 RE10, 2020 RE1, 2020 RE, 2020 RA2, 2020 QX7, 2020 QP3, 2020 PS5, 2020 PB1, 2020 OL5, 2020 OK7, 2020 NA, 2020 MV, 2020 LJ2, 2020 LG1, 2020 HU6, 2020 HJ4, 2020 DC2, 2020 BW14, 2020 BS11, 2017 UP2, 2016 HL, 2015 FT118, 2014 NE64, 2013 PY6, 2012 SW49, 2011 UT20, 2011 CG2, 2010 SF15, 2009 FY29, 2006 SA7, 2001 QE34
C47Nonndorf Obs. in Austria, 1 in MPEC 2020-S139 -- 2020 RR
J69North Obs. in England, 1 in MPEC 2020-S139 -- 2020 SM1
G34Oberfrauendorf Obs. in Germany, 1 in MPEC 2020-S139 -- 2020 SW
F51Pan-STARRS 1 (PS1) in Hawaii, 17 in MPECs 2020-S126, 2020-S127, 2020-S130, 2020-S131, 2020-S132, 2020-S133, 2020-S136, 2020-S137, 2020-S138, 2020-S139 & 2020-S141 -- 2020 SY2, 2020 SX2, 2020 SW2, 2020 SU2, 2020 ST2, 2020 SS2, 2020 SP2, 2020 SO2, 2020 SL1, 2020 RG6, 2020 RE10, 2020 RD10, 2020 PX3, 2020 OR, 2020 OA4, 2011 FY2, 2000 PQ27
F52Pan-STARRS 2 (PS2) in Hawaii, 4 in MPECs 2020-S128, 2020-S129, 2020-S133 & 2020-S139 -- 2020 SU2, 2020 SR2, 2020 SQ2, 2020 OY5
L04ROASTERR-1 in Romania, 1 in MPEC 2020-S146 -- 2020 SA3
H36Sandlot Obs. in Kansas, 4 in MPECs 2020-S127, 2020-S130, 2020-S133 & 2020-S146 -- 2020 SU2, 2020 SS2, 2020 SP2, 2020 SA3
C95SATINO-1 in France, 1 in MPEC 2020-S139 -- 2014 LQ26
W88*program code "*" (19) via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-S139 -- 2020 QU6
W885M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-S139 -- 2020 SN
587Sormano Obs. in Italy, 2 in MPEC 2020-S139 -- 2020 SO1, 2020 SM1
W34Squirrel Valley Obs. in North Carolina, 3 in MPECs 2020-S139 & 2020-S146 -- 2020 SM1, 2020 SA3, 2020 RE
I52Steward Obs. Mt. Lemmon Station in Arizona, 25 in MPECs 2020-S124, 2020-S127, 2020-S130, 2020-S133, 2020-S134, 2020-S136, 2020-S138, 2020-S139, 2020-S140 & 2020-S141 -- 2020 SZ2, 2020 SY2, 2020 SW2, 2020 SW, 2020 SU2, 2020 SS2, 2020 SQ2, 2020 SP2, 2020 SO2, 2020 SO1, 2020 SM2, 2020 SM1, 2020 SM, 2020 RX6, 2020 RW7, 2020 RU7, 2020 RP3, 2020 RN6, 2020 RK6, 2020 RH3, 2020 RE3, 2020 RE10, 2020 RA5, 2020 QX7, 2018 SQ3
J22Tacande Obs. in the Canary Islands, 1 in MPEC 2020-S139 -- 2020 RW7
K62Teplice Obs. in the Czech Republic, 2 in MPECs 2020-S124 & 2020-S146 -- 2020 SM2, 2020 SA3
W33Transit Dreams Obs., 1 in MPEC 2020-S146 -- 2020 SA3
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 4 in MPEC 2020-S139 -- 2020 RT2, 2020 RH1, 2020 RF5, 2020 PS3
L01Visnjan Obs. in Croatia, 5 in MPECs 2020-S127, 2020-S130, 2020-S136, 2020-S138 & 2020-S140 -- 2020 SZ2, 2020 SY2, 2020 SW2, 2020 SS2, 2020 SP2
I41Zwicky Transient Facility (ZTF) in southern California, 2 in MPEC 2020-S139 -- 2020 SJ2, 2000 PQ27
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 21 September '20

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2331 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 SM2NEODyS22052079-211421.52e-09-11.06-11.260NEODyS: "Based on 23 optical observations (of which 0 are rejected as outliers) from 2020-09-15.319 to 2020-09-21.013."
2020 SO1NEODyS22052101-211866.16e-07-7.66-7.730NEODyS: "Based on 62 optical observations (of which 0 are rejected as outliers) from 2020-09-17.401 to 2020-09-21.446."
JPL Sentry17002101-210115.126e-06-6.72-6.720JPL: Computed at 07:50 today Pacific time based on 62 observations spanning 4.0454 days (2020-Sep-17.40029 to 2020-Sep-21.44568). Diameter approximately 0.013 km. from weighted mean H=27.10.
2020 SWNEODyS22052086-2113127.81e-07-8.37-8.990NEODyS: "Based on 28 optical observations (of which 0 are rejected as outliers) from 2020-09-18.319 to 2020-09-21.216."
JPL Sentry17002093-211852.0786e-07-8.92-9.070JPL: Computed at 08:09 today Pacific time based on 28 observations spanning 2.8970 days (2020-Sep-18.31827 to 2020-Sep-21.21525). Diameter approximately 0.006 km. from weighted mean H=28.90.
2020 SHNEODyS2205207712.74e-11-9.02-9.020NEODyS: "Based on 39 optical observations (of which 1 are rejected as outliers) from 2020-09-16.289 to 2020-09-21.164."
2020 RD10NEODyS22052024-21181435.72e-06-4.60-4.970NEODyS: "Based on 10 optical observations (of which 0 are rejected as outliers) from 2020-09-12.452 to 2020-09-15.350."
JPL Sentry05102024-2120824.3029172e-06-4.79-5.310JPL: Computed at 22:03 Sept. 20th Pacific time based on 9 observations spanning 2.8979 days (2020-Sep-12.4514 to 2020-Sep-15.349307). Diameter approximately 0.045 km. from weighted mean H=24.36.
2020 RV6JPL Sentry2001R E M O V E DJPL: Risk listing removed at 1939 UTC today
2020 OY5NEODyS2205R E M O V E D-
JPL Sentry1700R E M O V E DJPL: Risk listing removed at 1433 UTC today
2017 USJPL Sentry05102085-2111160.001379786-3.75-4.020JPL: Computed at 09:12 Oct. 10th of 2019 Pacific time based on 126 observations spanning 30.614 days (2017-Oct-13.447156 to 2017-Nov-13.06145). Diameter approximately 0.021 km. from weighted mean H=25.99.
2017 AB21JPL Sentry05102024-2110255.6205e-09-5.66-6.130JPL: Computed at 09:38 Jan. 24th of 2017 Pacific time based on 7 observations spanning .97445 days (2017-Jan-03.46971 to 2017-Jan-04.444158). Diameter approximately 0.243 km. from weighted mean H=20.73.
2015 SK7JPL Sentry05102059-210749.191e-07-7.96-8.270JPL: Computed at 15:03 April 12th of 2017 Pacific time based on 32 observations spanning 19.127 days (2015-Sep-24.40431 to 2015-Oct-13.530917). Diameter approximately 0.006 km. from weighted mean H=28.83.
2009 YRJPL Sentry05102060-208781.1431e-05-6.58-6.900JPL: Computed at 10:35 April 7th of 2017 Pacific time based on 29 observations spanning 6.5440 days (2009-Dec-19.27429 to 2009-Dec-25.81832). Diameter approximately 0.009 km. from weighted mean H=28.01.

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 21 September '20

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

2205Noted that NEODyS has removed 2020 OY5 as an impact risk - see above
Noted that NEODyS has posted 2020 RD10 as an impact risk - see above
Noted that NEODyS has updated its 2020 SH risk assessment - see above
Noted that NEODyS has posted 2020 SM2 as an impact risk - see above
Noted that NEODyS has updated its 2020 SO1 risk assessment - see above
Noted that NEODyS has updated its 2020 SW risk assessment - see above
2031Grabbed MPEC 2020-S146 - 2020 SA3 - see above
2001Noted that JPL Sentry has removed 2020 RV6 as an impact risk - see above
1700Noted that JPL Sentry has removed 2020 OY5 as an impact risk - see above
Noted that JPL Sentry has updated its 2020 SO1 risk assessment - see above
Noted that JPL Sentry has updated its 2020 SW risk assessment - see above
Grabbed MPEC 2020-S132 - 2020 ST2 - see above
Grabbed MPEC 2020-S133 - 2020 SU2 - see above
Grabbed MPEC 2020-S134 - 2020 QX7 - see above
Grabbed MPEC 2020-S135 - 2020 SV2 - see above
Grabbed MPEC 2020-S136 - 2020 SW2 - see above
Grabbed MPEC 2020-S137 - 2020 SX2 - see above
Grabbed MPEC 2020-S138 - 2020 SY2 - see above
Grabbed MPEC 2020-S139 - Daily Orbit Update - see above
Grabbed MPEC 2020-S140 - 2020 SZ2 - see above
Grabbed MPEC 2020-S141 - 2020 RE10 - see above
Grabbed MPEC 2020-S142 - 2003 QQ10 - see above
Grabbed MPEC 2020-S143 - 2013 UY - see above
Grabbed MPEC 2020-S144 - 2017 QQ35 - see above
Grabbed MPEC 2020-S145 - 2018 FB1 - see above
0510Noted that JPL Sentry has updated its 2009 YR risk assessment - see above
Noted that JPL Sentry has updated its 2015 SK7 risk assessment - see above
Noted that JPL Sentry has updated its 2017 AB21 risk assessment - see above
Noted that JPL Sentry has updated its 2017 US risk assessment - see above
Noted that JPL Sentry has posted 2020 RD10 as an impact risk - see above
0430Grabbed MPEC 2020-S124 - 2020 SM2 - see above
Grabbed MPEC 2020-S125 - 2020 SN2 - see above
Grabbed MPEC 2020-S126 - 2020 SO2 - see above
Grabbed MPEC 2020-S127 - 2020 SP2 - see above
Grabbed MPEC 2020-S128 - 2020 SQ2 - see above
Grabbed MPEC 2020-S129 - 2020 SR2 - see above
Grabbed MPEC 2020-S130 - 2020 SS2 - see above
Grabbed MPEC 2020-S131 - 2020 RD10 - see above