Contents  on 29 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 29 September '20

The MPC's NEO Confirmation Page has 32 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 32 objects listed. Of these, seventeen were "one nighters." So far The Tracking News has counted a total of 47 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 29 September '20

Minor Planet Electronic Circulars

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


MPEC 2020-S249 - "23:36 UT" - 2020 SA7


MPEC 2020-S248 - "23:30 UT" - 2020 SY6


MPEC 2020-S247 - "20:42 UT" - 2020 SX6


<< DOU on 29 September '20 >>  MPEC 2020-S246 - "12:03 UT" - Daily Orbit Update


MPEC 2020-S245 - "11:54 UT" - 2020 SW6


MPEC 2020-S244 - "11:52 UT" - 2020 SV6


MPEC 2020-S243 - "11:48 UT" - 2020 ST6


MPEC 2020-S242 - "11:46 UT" - 2020 SS6


MPEC 2020-S241 - "11:44 UT" - 2020 SR6


MPEC 2020-S240 - "02:45 UT" - Comet P/2020 S5 (Panstarrs)

Observers  on 29 September '20

A total of 27 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 9 in MPECs 2020-S241, 2020-S242, 2020-S243, 2020-S245 & 2020-S246 -- 2020 SY1, 2020 SX1, 2020 SW6, 2020 ST6, 2020 SS6, 2020 SR6, 2020 RS8, 2020 QP5, 2020 MF4
T05ATLAS Haleakala in Hawaii, 4 in MPEC 2020-S246 -- 2020 PF7, 2011 GO27, 2004 RF84, 2000 TU28
T08ATLAS Mauna Loa in Hawaii, 7 in MPEC 2020-S246 -- 2020 SS4, 2020 RK2, 2020 PC5, 2019 GQ3, 2013 UX14, 2013 PY6, 2007 VX137
B88Bigmuskie Obs. in Italy, 1 in MPEC 2020-S246 -- 2012 DP8
160Castelmartini Obs. in Italy, 1 in MPEC 2020-S246 -- 2016 LZ10
703Catalina Sky Survey in Arizona, 1 in MPEC 2020-S247 -- 2020 SX6
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 2 in MPECs 2020-S244 & 2020-S249 -- 2020 SV6, 2020 SA7
K87Dettelbach Vineyard Obs. in Germany, 1 in MPEC 2020-S246 -- 2020 SB
U55Golden Ears Obs., 1 in MPEC 2020-S243 -- 2020 ST6
J95Great Shefford Obs. in England, 1 in MPEC 2020-S242 -- 2020 SS6
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2020-S240 -- P/2020 S5
G96Mt. Lemmon Survey (MLS) in Arizona, 20 in MPECs 2020-S240, 2020-S241, 2020-S242, 2020-S243, 2020-S244, 2020-S245, 2020-S246, 2020-S247, 2020-S248 & 2020-S249 -- 2020 SY6, 2020 SX6, 2020 SW6, 2020 SV6, 2020 ST6, 2020 SS6, 2020 SR6, 2020 SO5, 2020 SO2, 2020 SN, 2020 SG1, 2020 SD, 2020 SC5, 2020 SA7, P/2020 S5, 2020 QL6, 2020 HP8, 2005 JT108, 2004 RF84, 2000 TU28
Z23Nordic Optical Telescope in the Canary Islands, 1 in MPEC 2020-S246 -- 2020 SO
F51Pan-STARRS 1 (PS1) in Hawaii, 19 in MPECs 2020-S240, 2020-S241, 2020-S242, 2020-S246 & 2020-S248 -- 2020 SY6, 2020 SS6, 2020 SR6, 2020 SM3, 2020 SL, P/2020 S5, 2020 RR3, 2020 RB, 2020 QH2, 2020 ML3, 2017 SE19, 2016 RY40, 2010 RJ43, 2010 RC12, 2008 UX, 2006 TD, 2005 TE45, 2004 JN1, 2000 PQ27
F52Pan-STARRS 2 (PS2) in Hawaii, 12 in MPECs 2020-S241, 2020-S242, 2020-S246, 2020-S247 & 2020-S248 -- 2020 SY6, 2020 SX6, 2020 SU2, 2020 SS6, 2020 SR6, 2020 QM4, 2010 RJ43, 2008 UX, 2006 TD, 2004 QD3, 2004 JN1, 2000 PQ27
B49Paus Obs. in Spain, 1 in MPEC 2020-S243 -- 2020 ST6
6581Dave Balam via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2020-S246 -- 2020 SS5
L18QOS Obs., 6 in MPEC 2020-S246 -- 2013 UX14, 443837, 381677, 285990, 163081, 136900
H36Sandlot Obs. in Kansas, 2 in MPECs 2020-S241 & 2020-S243 -- 2020 ST6, 2020 SR6
C95SATINO-1 in France, 1 in MPEC 2020-S246 -- 2020 OA2
204Schiaparelli Obs. in Italy, 1 in MPEC 2020-S240 -- P/2020 S5
W885M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-S246 -- 2020 SS5
I52Steward Obs. Mt. Lemmon Station in Arizona, 5 in MPECs 2020-S240, 2020-S242, 2020-S243, 2020-S244 & 2020-S245 -- 2020 SW6, 2020 SV6, 2020 ST6, 2020 SS6, P/2020 S5
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-S246 -- 2020 RR4
L01Visnjan Obs. in Croatia, 6 in MPECs 2020-S240, 2020-S241, 2020-S242, 2020-S243, 2020-S245 & 2020-S248 -- 2020 SY6, 2020 SW6, 2020 ST6, 2020 SS6, 2020 SR6, P/2020 S5
C51WISE in Earth polar orbit, 3 in MPEC 2020-S246 -- 2020 SE4, 2020 BU16, 10860
I41Zwicky Transient Facility (ZTF) in southern California, 7 in MPEC 2020-S246 -- 2020 SS5, 2020 RJ3, 2020 PX4, 2020 PD1, 2017 XL62, 2007 VX137, 2000 PQ27
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 29 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 SX6JPL Sentry23432080-2111121.76765e-06-7.07-7.630JPL: Computed at 15:04 today Pacific time based on 21 observations spanning 3.0769 days (2020-Sep-26.39256 to 2020-Sep-29.469502). Diameter approximately 0.014 km. from weighted mean H=26.97.
2020 SP6NEODyS17002073-211682.27e-06-6.69-6.920NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2020-09-28.202 to 2020-09-28.797."
2020 SN6NEODyS17002039-21182042.83e-05-6.70-7.760NEODyS: "Based on 11 optical observations (of which 0 are rejected as outliers) from 2020-09-27.306 to 2020-09-28.317."
2020 SL6NEODyS17002101-211033.26e-07-8.00-8.150NEODyS: "Based on 11 optical observations (of which 0 are rejected as outliers) from 2020-09-27.307 to 2020-09-28.328."
2020 SOJPL Sentry17002048-211270.106530183-2.57-2.590JPL: Computed at 09:55 today Pacific time based on 33 observations spanning 39.419 days (2020-Aug-19.531231 to 2020-Sep-27.950464). Diameter approximately 0.007 km. from weighted mean H=28.30.
2020 RR4JPL Sentry17002082-208212.957e-08-8.03-8.030JPL: Computed at 06:59 today Pacific time based on 20 observations spanning 9.1493 days (2020-Sep-09.45312 to 2020-Sep-18.602444). Diameter approximately 0.022 km. from weighted mean H=25.90.
NEODyS1700208215.05e-08-7.84-7.840NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2020-09-09.454 to 2020-09-18.603."
2019 TK5JPL Sentry17002061-2096191.49614607e-05-6.09-6.220JPL: Computed at 06:42 Oct. 19th of 2019 Pacific time based on 37 observations spanning 10.512 days (2019-Oct-08.33166 to 2019-Oct-18.844052). Diameter approximately 0.011 km. from weighted mean H=27.35.
2019 SX8JPL Sentry17002110-211642.6011e-07-8.85-9.100JPL: Computed at 06:59 Oct. 8th of 2019 Pacific time based on 25 observations spanning 7.9979 days (2019-Sep-30.34802 to 2019-Oct-08.34592). Diameter approximately 0.005 km. from weighted mean H=28.94.
2012 SY49JPL Sentry17002031-2114231.2104498e-05-5.06-5.420JPL: Computed at 22:37 April 11th of 2017 Pacific time based on 43 observations spanning 4.1465 days (2012-Sep-22.26616 to 2012-Sep-26.412676). Diameter approximately 0.023 km. from weighted mean H=25.83.

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 29 September '20

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

2343Noted that JPL Sentry has posted 2020 SX6 as an impact risk - see above
Grabbed MPEC 2020-S247 - 2020 SX6 - see above
Grabbed MPEC 2020-S248 - 2020 SY6 - see above
Grabbed MPEC 2020-S249 - 2020 SA7 - see above
1700Noted that JPL Sentry has updated its 2012 SY49 risk assessment - see above
Noted that JPL Sentry has updated its 2019 SX8 risk assessment - see above
Noted that JPL Sentry has updated its 2019 TK5 risk assessment - see above
Noted that JPL Sentry has updated its 2020 RR4 risk assessment - see above
Noted that NEODyS has updated its 2020 RR4 risk assessment - see above
Noted that NEODyS has posted 2020 SL6 as an impact risk - see above
Noted that NEODyS has posted 2020 SN6 as an impact risk - see above
Noted that JPL Sentry has posted 2020 SO as an impact risk - see above
Noted that NEODyS has posted 2020 SP6 as an impact risk - see above
Grabbed MPEC 2020-S241 - 2020 SR6 - see above
Grabbed MPEC 2020-S242 - 2020 SS6 - see above
Grabbed MPEC 2020-S243 - 2020 ST6 - see above
Grabbed MPEC 2020-S244 - 2020 SV6 - see above
Grabbed MPEC 2020-S245 - 2020 SW6 - see above
Grabbed MPEC 2020-S246 - Daily Orbit Update - see above
0430Grabbed MPEC 2020-S240 - Comet P/2020 S5 (Panstarrs) - see above