Contents  on 6 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 6 September '20

The MPC's NEO Confirmation Page has 34 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 34 objects listed. Of these, 23 were "one nighters." So far The Tracking News has counted a total of 44 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 6 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-R24 - "22:42 UT" - 2020 RL


MPEC 2020-R23 - "21:52 UT" - 2020 RK


MPEC 2020-R22 - "21:51 UT" - 2020 RJ


MPEC 2020-R21 - "20:14 UT" - 2020 OD8


MPEC 2020-R20 - "19:10 UT" - 2018 RV3


<< DOU on 6 September '20 >>  MPEC 2020-R19 - "12:00 UT" - Daily Orbit Update


MPEC 2020-R18 - "10:50 UT" - 2011 ES4


MPEC 2020-R17 - "02:28 UT" - 2020 HZ38


MPEC 2020-R16 - "02:17 UT" - 2020 RG


MPEC 2020-R15 - "02:16 UT" - 2020 RF


MPEC 2020-R14 - "01:46 UT" - Comet C/2019 Q1 (Lemmon)

Observers  on 6 September '20

A total of 54 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 5 in MPECs 2020-R18, 2020-R19, 2020-R22, 2020-R23 & 2020-R24 -- 2020 RL, 2020 RK, 2020 RJ, 2020 RF, 2011 ES4
T05ATLAS Haleakala in Hawaii, 2 in MPEC 2020-R19 -- 2020 HS8, 2013 UX14
C77Bernezzo Obs. in Italy, 1 in MPEC 2020-R15 -- 2020 RF
215Buchloe Obs. in Germany, 1 in MPEC 2020-R14 -- C/2019 Q1
160Castelmartini Obs. in Italy, 15 in MPECs 2020-R15, 2020-R19, 2020-R22 & 2020-R23 -- 2020 RK, 2020 RJ, 2020 RF, 2020 LB3, 2016 NV38, 2013 PY6, 2012 DP8, 96744, 66008, 470678, 420302, 354952, 162173, 136900, 106538
703Catalina Sky Survey (CSS) in Arizona, 3 in MPECs 2020-R14, 2020-R16 & 2020-R23 -- 2020 RK, 2020 RG, C/2019 Q1
A77Chante-Perdrix Obs. in France, 1 in MPEC 2020-R14 -- C/2019 Q1
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2020-R14 -- C/2019 Q1
958Dax Obs. in France, 1 in MPEC 2020-R15 -- 2020 RF
W84&program code "&" (15) via DECam in Chile, 4 in MPEC 2020-R19 -- 2017 HY48, 2017 FY64, 2017 FG63, 2017 CA33
K87Dettelbach Vineyard Obs. in Germany, 1 in MPEC 2020-R14 -- C/2019 Q1
J04ESA Optical Ground Station in the Canary Islands, 1 in MPEC 2020-R14 -- C/2019 Q1
734Farpoint Obs. in Kansas, 2 in MPECs 2020-R18 & 2020-R22 -- 2020 RJ, 2011 ES4
595Farra d'Isonzo Obs. in Italy, 3 in MPECs 2020-R15, 2020-R18 & 2020-R23 -- 2020 RK, 2020 RF, 2011 ES4
F659Marco Micheli via Faulkes Telescope North in Hawaii, 1 in MPEC 2020-R19 -- 2020 QA
K83Forti Obs., 4 in MPECs 2020-R15, 2020-R18, 2020-R19 & 2020-R23 -- 2020 RK, 2020 RF, 2020 LB3, 2011 ES4
157Frasso Sabino Obs. in Italy, 1 in MPEC 2020-R14 -- C/2019 Q1
X31Galilei Obs., 1 in MPEC 2020-R18 -- 2011 ES4
K88GINOP-KHK in Hungary, 1 in MPEC 2020-R14 -- C/2019 Q1
J95Great Shefford Obs. in England, 6 in MPECs 2020-R16, 2020-R18, 2020-R19, 2020-R22, 2020-R23 & 2020-R24 -- 2020 RL, 2020 RK, 2020 RJ, 2020 RG, 2020 RC, 2011 ES4
H06iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2020-R18 -- 2011 ES4
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2020-R14 -- C/2019 Q1
L51MARGO in Ukraine, 1 in MPEC 2020-R14 -- C/2019 Q1
W92MASTER OAFA Obs., 1 in MPEC 2020-R19 -- 887
568_Marco Micheli on Mauna Kea in Hawaii, 1 in MPEC 2020-R14 -- C/2019 Q1
711McDonald Obs. in Texas, 1 in MPEC 2020-R14 -- C/2019 Q1
V01Mountainville Obs. in Utah, 1 in MPEC 2020-R23 -- 2020 RK
G96Mt. Lemmon Survey (MLS) in Arizona, 10 in MPECs 2020-R14, 2020-R15, 2020-R17, 2020-R19, 2020-R22 & 2020-R24 -- 2020 RL, 2020 RJ, 2020 RF, 2020 PF7, 2020 OW3, 2020 KU3, 2020 HZ38, C/2019 Q1, 2017 QM18, 2006 WJ3
J69North Obs. in England, 5 in MPECs 2020-R15, 2020-R18, 2020-R19 & 2020-R23 -- 2020 RK, 2020 RF, 2020 RC, 2020 RB, 2011 ES4
Z80Northolt Branch Obs. in England, 5 in MPECs 2020-R18, 2020-R19 & 2020-R23 -- 2020 RK, 2020 RE, 2011 ES4, 285990, 136900
G34Oberfrauendorf Obs. in Germany, 2 in MPECs 2020-R22 & 2020-R23 -- 2020 RK, 2020 RJ
F51Pan-STARRS 1 (PS1) in Hawaii, 19 in MPECs 2020-R17, 2020-R18, 2020-R19, 2020-R20 & 2020-R21 -- 2020 QA5, 2020 PZ2, 2020 PX1, 2020 OQ7, 2020 OM1, 2020 OD8, 2020 LJ2, 2020 HZ38, 2018 RV3, 2016 RU, 2016 FY14, 2015 XJ261, 2014 NE64, 2011 QG9, 2011 ES4, 35107, 154302, 154275, 153306
F52Pan-STARRS 2 (PS2) in Hawaii, 13 in MPECs 2020-R14, 2020-R16, 2020-R17, 2020-R19 & 2020-R21 -- 2020 RG, 2020 RA, 2020 QV6, 2020 OD8, 2020 OA2, 2020 HZ38, C/2019 Q1, 2016 FY14, 2014 LW21, 2006 HB, 90147, 420302, 16960
B49Paus Obs. in Spain, 2 in MPECs 2020-R15 & 2020-R23 -- 2020 RK, 2020 RF
6581Dave Balam via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2020-R14 -- C/2019 Q1
L18QOS Obs., 3 in MPECs 2020-R18, 2020-R19 & 2020-R22 -- 2020 RJ, 2020 RC, 2011 ES4
L04ROASTERR-1 in Romania, 3 in MPECs 2020-R15, 2020-R22 & 2020-R23 -- 2020 RK, 2020 RJ, 2020 RF
104San Marcello Pistoiese Obs. in Italy, 6 in MPECs 2020-R15, 2020-R16, 2020-R18, 2020-R22, 2020-R23 & 2020-R24 -- 2020 RL, 2020 RK, 2020 RJ, 2020 RG, 2020 RF, 2011 ES4
H36Sandlot Obs. in Kansas, 1 in MPEC 2020-R14 -- C/2019 Q1
B74Santa Maria de Montmagastrell Obs. in Spain, 1 in MPEC 2020-R14 -- C/2019 Q1
C95SATINO-1 in France, 2 in MPECs 2020-R14 & 2020-R19 -- C/2019 Q1, 2006 HB
204Schiaparelli Obs. in Italy, 4 in MPECs 2020-R18, 2020-R19, 2020-R22 & 2020-R23 -- 2020 RK, 2020 RJ, 2020 RE, 2011 ES4
Q11Shinshiro Obs., 1 in MPEC 2020-R14 -- C/2019 Q1
G40*program code "*" (19) via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2020-R19 -- 2020 RC
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2020-R14 -- C/2019 Q1
291Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2020-R17 -- 2020 HZ38
W34Squirrel Valley Obs. in North Carolina, 4 in MPECs 2020-R15, 2020-R18, 2020-R22 & 2020-R23 -- 2020 RK, 2020 RJ, 2020 RF, 2011 ES4
I93St. Pardon de Conques Obs. in France, 5 in MPECs 2020-R14, 2020-R15, 2020-R18, 2020-R22 & 2020-R23 -- 2020 RK, 2020 RJ, 2020 RF, C/2019 Q1, 2011 ES4
I52Steward Obs. Mt. Lemmon Station in Arizona, 41 in MPECs 2020-R14, 2020-R15, 2020-R16, 2020-R18, 2020-R19, 2020-R22, 2020-R23 & 2020-R24 -- 2020 RL, 2020 RK, 2020 RJ, 2020 RG, 2020 RF, 2020 RC, 2020 RB, 2020 RA, 2020 QY3, 2020 QW2, 2020 QV6, 2020 QV1, 2020 QS5, 2020 QS1, 2020 QP6, 2020 QP3, 2020 QN1, 2020 QM1, 2020 QM, 2020 QJ6, 2020 QG6, 2020 QG3, 2020 QE3, 2020 PX4, 2020 PX3, 2020 PR3, 2020 PK3, 2020 PK2, 2020 PG, 2020 PF7, 2020 PD1, 2020 PC5, 2020 OW3, 2020 OS3, 2020 OR7, 2020 NF, 2020 MF2, 2020 LR, 2020 HS8, C/2019 Q1, 2011 ES4
461SZTE Asteroid Program in Hungary, 1 in MPEC 2020-R14 -- C/2019 Q1
W33Transit Dreams Obs., 2 in MPECs 2020-R18 & 2020-R23 -- 2020 RK, 2011 ES4
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-R19 -- 2016 WQ1
L01Visnjan Obs. in Croatia, 7 in MPECs 2020-R14, 2020-R15, 2020-R16, 2020-R18, 2020-R22, 2020-R23 & 2020-R24 -- 2020 RL, 2020 RK, 2020 RJ, 2020 RG, 2020 RF, C/2019 Q1, 2011 ES4
G23Vulpecula Obs., 1 in MPEC 2020-R19 -- 159402
I41Zwicky Transient Facility (ZTF) in southern California, 5 in MPEC 2020-R19 -- 85804, 382625, 2100, 1943, 1685
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 6 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 RKJPL Sentry23052089-208911.093e-07-7.19-7.190JPL: Computed at 15:59 today Pacific time based on 70 observations spanning 1.6322 days (2020-Sep-05.24723 to 2020-Sep-06.87946). Diameter approximately 0.031 km. from weighted mean H=25.21.
2020 QN1JPL Sentry17002110-211941.59407e-06-5.31-5.630JPL: Computed at 07:09 today Pacific time based on 35 observations spanning 36.995 days (2020-Jul-31.38815 to 2020-Sep-06.38338). Diameter approximately 0.081 km. from weighted mean H=23.11.
2018 RR1JPL Sentry17002083-2118152.413506e-05-7.42-7.530JPL: Computed at 08:47 Sept. 18th of 2018 Pacific time based on 34 observations spanning 8.0739 days (2018-Sep-07.39342 to 2018-Sep-15.467288). Diameter approximately 0.004 km. from weighted mean H=29.94.
2016 NL56JPL Sentry17002023-21182597.179225e-07-3.57-4.250JPL: Computed at 20:13 March 5th of 2018 Pacific time based on 6 observations spanning 2.7820 days (2016-Jul-12.443828 to 2016-Jul-15.225848). Diameter approximately 0.265 km. from weighted mean H=20.61.
2016 EL1JPL Sentry17002068-210965.4003e-07-7.54-7.980JPL: Computed at 00:00 April 15th of 2017 Pacific time based on 26 observations spanning .62176 days (2016-Mar-03.3198 to 2016-Mar-03.94156). Diameter approximately 0.009 km. from weighted mean H=27.84.
2011 ES4JPL Sentry1700R E M O V E DJPL: Risk listing removed at 1614 UTC today
2010 RF12JPL Sentry17002095-2119590.0471172460257-3.31-3.320JPL: Computed at 11:16 May 11th Pacific time based on 323 observations spanning 5.0215 days (2010-Sep-03.493269 to 2010-Sep-08.514787). Diameter approximately 0.007 km. from weighted mean H=28.37.
1999 RZ31JPL Sentry17002056-205621.5938e-06-5.19-5.250JPL: Computed at 12:40 April 10th of 2017 Pacific time based on 44 observations spanning 14.002 days (1999-Sep-07.40484 to 1999-Sep-21.40733). Diameter approximately 0.059 km. from weighted mean H=23.79.

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 6 September '20

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

2305Noted that JPL Sentry has posted 2020 RK as an impact risk - see above
Grabbed MPEC 2020-R21 - 2020 OD8 - see above
Grabbed MPEC 2020-R22 - 2020 RJ - see above
Grabbed MPEC 2020-R23 - 2020 RK - see above
Grabbed MPEC 2020-R24 - 2020 RL - see above
2003Grabbed MPEC 2020-R20 - 2018 RV3 - see above
1700Noted that JPL Sentry has updated its 1999 RZ31 risk assessment - see above
Noted that JPL Sentry has updated its 2010 RF12 risk assessment - see above
Noted that JPL Sentry has removed 2011 ES4 as an impact risk - see above
Noted that JPL Sentry has updated its 2016 EL1 risk assessment - see above
Noted that JPL Sentry has updated its 2016 NL56 risk assessment - see above
Noted that JPL Sentry has updated its 2018 RR1 risk assessment - see above
Noted that JPL Sentry has updated its 2020 QN1 risk assessment - see above
Grabbed MPEC 2020-R18 - 2011 ES4 - see above
Grabbed MPEC 2020-R19 - Daily Orbit Update - see above
0530Grabbed MPEC 2020-R14 - Comet C/2019 Q1 (Lemmon) - see above
Grabbed MPEC 2020-R15 - 2020 RF - see above
Grabbed MPEC 2020-R16 - 2020 RG - see above
Grabbed MPEC 2020-R17 - 2020 HZ38 - see above