Contents  on 8 November '18

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.

Traffic Report  on 8 November '18

Nine objects reported inside ten LD

Nine minor planets are reported to be less than ten lunar distances (LD) from Earth today. Closest is 2018 VA2, which enters our planet's sphere of gravitational influence, slipping in from 2.43 to 1.87 LD.

Neighborhood Traffic - sorted by Earth passage distance, grouped by 1.0, 2.41, 5.0 & 10.0 LD boundaries
Earth passage I D ~Size Distance today  Inside ten LD Notes
0.99 LD Nov. 10 2018 VX1 10 m  2.56 from 3.83 LD Nov. 3 - 18 intruder, NHATS target - DOU
1.19 LD Nov. 3 2018 VG 13 m  8.53 to 10.21 LD Oct. 28 - today NHATS target, exits ten LD
1.62 LD Nov. 2 2018 UD3 20 m  8.73 to 10.33 LD Oct. 27 - today exits ten LD
1.87 LD tomorrow 2018 VA2 13 m  1.87 from 2.43 LD Nov. 2 - 15 NHATS target, enters Earth SOI - DOU
3.62 LD Nov. 10 2018 VS1 16 m  5.23 from 7.14 LD Nov. 6 - 14
3.92 LD Dec. 2 2018 TG6 12 m  7.47 from 7.70 LD Oct. 30 - Jan. 5 NHATS target - DOU
7.42 LD Nov. 4 2018 UY1 52 m  9.41 to 10.66 LD Nov. 1 - 8 NHATS target, exits ten LD
7.62 LD Nov. 4 2018 VA1 14 m  9.94 to 11.15 LD Oct. 31 - today NHATS target, exits ten LD
8.66 LD Nov. 6 2018 VN1 20 m  8.77 to 9.03 LD Nov. 2 - 11 NHATS target - DOU

This report was generated at 1940 UTC with follow-up in today's DOU MPEC for five objects active in our traffic tables (above/below) and for departed risk-listed 2018 VC, plus astrometry from March for 2017 VR12.

Approaching - sorted by 10-LD bubble entry date
Earth passage I D ~Size Distance today  Inside ten LD Notes
9.41 LD Nov. 13 2018 UQ1 140 m  16.66 from 19.04 LD Nov. 12 - 15 DOU
7.4   LD Nov. 27* 2008 WD14 89 m  37.8 from 39.8 LD Nov. 23 - 30 EPU +/- 2.04 days*
4.1   LD Dec. 9* 2013 VX4 62 m  43.7 from 45.0 LD Dec. 3 - 15 EPU +/- 2.35 days*
7.36 LD Dec. 22 163899 2003 SD220 1.17 km  55.03 from 56.05 LD Dec. 17 - 26 NHATS target
7.3   LD Jan. 9* 2013 YM2 19 m  56.4 from 57.1 LD Jan. 2 - 16 EPU +/- 1.25 days*, NHATS target
* EPU = Earth passage uncertainty


<< Reading:  NASA/Goddard has a news item about the "ridiculously bright and beautiful" comet C/2006 P1 (McNaught) and what has been learned from "its highly structured tail, composed of many distinct dust bands called striae, or striations.".



Notes: Ten times the distance to the Moon (ten LD) has no astronomical importance but is a useful boundary for reporting about transient natural objects that approach our planet's gravitational sphere of influence (SOI), which has a radius of about 2.41 LD from Earth's center. This puts a focus on some of the most important and very best NEO observation work, representative of the much larger NEO discovery and tracking effort. Object temporal distances are derived by A/CC from JPL Horizons data. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

NEOCP Activity  on 8 November '18

The MPC's NEO Confirmation Page has 113 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 113 objects listed. Of these, 41 were "one nighters." So far The Tracking News has counted a total of 131 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 8 November '18

Minor Planet Electronic Circulars

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


<< DOU on 8 Nov. '18 >>  MPEC 2018-V63 - "13:07 UT" - Daily Orbit Update

Observers  on 8 November '18

Thirteen observers appear in today's MPEC.

CodeObserver / observatory
160Castelmartini Obs. in Italy, 5 in MPEC 2018-V63 -- 65706, 523587, 37336, 349507, 2061
V06Catalina Sky Survey Kuiper Telescope in Arizona, 1 in MPEC 2018-V63 -- 2018 QV1
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 11 in MPEC 2018-V63 -- 2018 UR1, 2018 SQ2, 2018 SA1, 2018 RA5, 2018 PF21, 2015 VD66, 2014 SK260, 2009 QJ9, 2001 WK15, 1992 BC, 303933
J95Great Shefford Obs. in England, 2 in MPEC 2018-V63 -- 2018 VX1, 2018 VA2
238Grorudalen Obs. in Norway, 1 in MPEC 2018-V63 -- 2017 VR12
G96Mt. Lemmon Survey (MLS) in Arizona, 25 in MPEC 2018-V63 -- 2018 VN1, 2018 UQ1, 2018 UE3, 2018 TP2, 2016 VU2, 2014 MP60, 2010 MF1, 2009 SV17, 2008 YR2, 2005 UF1, 523587, 476904, 454100, 446924, 228368, 17274, 163818, 162149, 159495, 138859, 137084, 137052, 6456, 2212, 1943
F52Pan-STARRS 2 in Hawaii, 1 in MPEC 2018-V63 -- 2018 TG6
L04ROASTERR-1 in Romania, 1 in MPEC 2018-V63 -- 2018 UR2
C95SATINO-1 in France, 1 in MPEC 2018-V63 -- 54401
691Spacewatch 0.9m telescope in Arizona, 6 in MPEC 2018-V63 -- 2018 VX1, 2018 VW1, 2018 US2, 2018 UM1, 2018 TS5, 2018 LB1
291Spacewatch 1.8m telescope in Arizona, 2 in MPEC 2018-V63 -- 2018 TJ6, 2008 WT62
I52Steward Obs. Mt. Lemmon Station in Arizona, 12 in MPEC 2018-V63 -- 2018 VX1, 2018 VW1, 2018 VV, 2018 VL1, 2018 VH2, 2018 VG1, 2018 VC, 2018 VB1, 2018 UZ, 2018 UM1, 2018 UG3, 2018 TV4
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 4 in MPEC 2018-V63 -- 2018 UQ1, 2018 TJ6, 2018 SX2, 2008 WT62
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 8 November '18

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
2018 VP1NEODyS16002020-2043112.81e-03-4.00-4.00NEODyS: "Based on 17 optical observations (of which 0 are rejected as outliers) from 2018-11-03.273 to 2018-11-06.558."
2018 VCJPL Sentry16002109-211895.78594e-06-6.34-6.650JPL: Computed at 07:08 today Pacific time based on 94 observations spanning 6.9218 days (2018-Nov-01.24873 to 2018-Nov-08.1705). Diameter approximately 0.019 km. from weighted mean H=26.31.
NEODyS16002109-2118183.91e-06-6.53-6.99-NEODyS: "Based on 90 optical observations (of which 0 are rejected as outliers) from 2018-11-01.250 to 2018-11-07.181."
2018 UM1JPL Sentry16002095-211252.73954e-06-5.25-5.470JPL: Computed at 07:03 today Pacific time based on 147 observations spanning 20.004 days (2018-Oct-19.1455 to 2018-Nov-08.14925). Diameter approximately 0.067 km. from weighted mean H=23.52.
NEODyS16002083-2116182.02e-06-5.39-5.510NEODyS: "Based on 140 optical observations (of which 0 are rejected as outliers) from 2018-10-19.146 to 2018-11-07.199."
2018 TJ6JPL Sentry1600R E M O V E DJPL: Risk listing removed at 1503 UTC today
2018 TBNEODyS16002095-210321.39e-06-6.09-6.090NEODyS: "Based on 187 optical observations (of which 1 are rejected as outliers) from 2018-10-02.423 to 2018-11-03.454."

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 8 November '18

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

1940Generated Traffic Report
1600Noted that NEODyS has updated its 2018 TB risk assessment - see above
Noted that JPL Sentry has removed 2018 TJ6 as an impact risk - see above
Noted that JPL Sentry has updated its 2018 UM1 risk assessment - see above
Noted that NEODyS has updated its 2018 UM1 risk assessment - see above
Noted that JPL Sentry has updated its 2018 VC risk assessment - see above
Noted that NEODyS has updated its 2018 VC risk assessment - see above
Noted that NEODyS has updated its 2018 VP1 risk assessment - see above
Grabbed MPEC 2018-V63 - Daily Orbit Update - see above