Contents  on 13 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 13 November '18

Twenty objects reported inside ten LD

Twenty visitors at less than ten lunar distances (LD) from our planet are being tracked today. Risk-listed intruder 2018 VC7 is the nearest, and passes the Earth at 0.87 LD and the Moon at 1.08 LD, while 2018 VN6 leaves Earth's sphere of gravitational influence, traveling out from 2.05 to 4.45 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
0.87 LD today 2018 VC7 11 m  0.87 LD Nov. 2 - 23 intruder today, NHATS target, Earth closest at 0223
UTC, Moon closest 1.08 LD at 2103 UTC, risk
0.99 LD Nov. 10 2018 VX1 11 m  3.15 to 4.44 LD Nov. 3 - 18 intruder, NHATS target
1.86 LD yesterday 2018 VN6 8 m  2.05 to 4.45 LD Nov. 9 - 15 exits Earth SOI
1.87 LD Nov. 9 2018 VA2 13 m  6.17 to 7.60 LD Nov. 2 - 15 NHATS target
1.90 LD Nov. 9 2018 VR3 14 m  6.99 to 8.76 LD Nov. 3 - 14 NHATS target
3.13 LD Nov. 11 2018 VA4 8 m  3.63 to 4.69 LD Nov. 6 - 17 NHATS target
3.61 LD tomorrow 2018 VX5 25 m  3.63 from 4.25 LD Nov. 9 - 19 DOU
3.62 LD Nov. 10 2018 VS1 16 m  6.80 to 8.91 LD Nov. 6 - 14
3.93 LD Dec. 2 2018 TG6 12 m  6.39 from 6.60 LD Oct. 30 - Jan. 5 NHATS target
4.11 LD tomorrow 2018 VO3 14 m  4.11 from 4.51 LD Nov. 8 - 19 NHATS target - DOU
4.48 LD Nov. 10 2018 VD5 9 m  7.43 to 9.20 LD Nov. 5 - 14 risk
5.44 LD Nov. 11 2018 VY4 13 m  7.36 to 9.49 LD Nov. 8 - 14
5.93 LD Nov. 11 2018 VH5 12 m  6.37 to 6.96 LD Nov. 5 - 17 NHATS target
6.42 LD today 2018 VU7 13 m  6.42 LD Nov. 10 - 17 Earth closest at 2321 UTC
8.00 LD today 2018 VR6 11 m  8.00 LD Nov. 10 - 16 Earth closest at 1355 UTC
9.04 LD tomorrow 2018 VD7 25 m  9.10 from 9.69 LD yesterday - Nov. 16
9.40 LD today 2018 UQ1 139 m  9.40 LD yesterday - Nov. 15 Earth closest at 2244 UTC - DOU
9.45 LD yesterday 2018 VZ6 25 m  9.69 to 10.44 LD Nov. 10 - 13 exits ten LD
9.66 LD today 2018 VF5 10 m  9.66 LD Nov. 11 - 15 Earth closest at 1559 UTC
9.73 LD tomorrow 2018 VW4 43 m  9.75 from 10.35 LD today - Nov. 15 enters ten LD - DOU

This report was generated at 1934 UTC with the discovery of just departed risk-listed 2018 VA8 (MPEC), which flew by us at 2.98 LD on November 9th. Today's DOU MPEC has follow-up for five objects active in the traffic tables here and for three departed objects: 2018 VM6 and risk-listed 2018 VS6 and 2018 TY4.

Approaching - sorted by 10-LD bubble entry date
Earth passage I D ~Size Distance today  Inside ten LD Notes
8.20 LD Nov. 25 2018 VT7 9 m  10.35 from 10.71 LD Nov. 15 - Dec. 7 NHATS target
7.64 LD Nov. 20 2018 VP7 15 m  11.07 from 12.03 LD Nov. 15 - 25 NHATS target
7.4   LD Nov. 27* 2008 WD14 89 m  28.0 from 29.9 LD Nov. 23 - 30 EPU +/- 2.04 days*
4.1   LD Dec. 9* 2013 VX4 62 m  37.1 from 38.4 LD Dec. 3 - 15 EPU +/- 2.35 days*
7.36 LD Dec. 22 163899 2003 SD220 1.17 km  49.69 from 50.79 LD Dec. 17 - 26 NHATS target - DOU
7.3   LD Jan. 9* 2013 YM2 19 m  52.8 from 53.5 LD Jan. 2 - 16 EPU +/- 1.25 days*, NHATS target
* EPU = Earth passage uncertainty



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 13 November '18

The MPC's NEO Confirmation Page has 69 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 69 objects listed. Of these, 30 were "one nighters." So far The Tracking News has counted a total of 80 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 13 November '18

Minor Planet Electronic Circulars

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


MPEC 2018-V181 - "16:14 UT" - 2018 VA8


MPEC 2018-V180 - "16:10 UT" - 2018 VZ7


MPEC 2018-V179 - "16:06 UT" - 2018 VY7


<< DOU on 13 Nov. '18 >>  MPEC 2018-V178 - "13:07 UT" - Daily Orbit Update

Observers  on 13 November '18

A total of 26 observers appear in today's MPECs.

CodeObserver / observatory
C97Al-Fulaij Obs., 9 in MPEC 2018-V178 -- 2018 VX, 2018 UR2, 2018 RL, 65733, 523631, 523604, 418929, 18109, 16834
E23Arcadia Obs. in New South Wales, 2 in MPEC 2018-V178 -- 2018 VM6, 2018 VF3
T05ATLAS Haleakala in Hawaii, 5 in MPEC 2018-V178 -- 2018 VF3, 2018 UN1, 2018 TQ2, 2018 RL, 2007 UL12
T08ATLAS Mauna Loa in Hawaii, 7 in MPEC 2018-V178 -- 2018 VG1, 2018 UR2, 2018 UQ1, 2018 UN1, 2018 TT1, 2011 AA37, 2009 SV17
160Castelmartini Obs. in Italy, 6 in MPEC 2018-V178 -- 523595, 438429, 283729, 18882, 138847, 719
703Catalina Sky Survey in Arizona, 1 in MPEC 2018-V181 -- 2018 VA8
309Cerro Paranal in Chile, 1 in MPEC 2018-V178 -- 2018 TY4
807Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2018-V178 -- 2018 RB8
734Farpoint Obs. in Kansas, 1 in MPEC 2018-V179 -- 2018 VY7
J95Great Shefford Obs. in England, 1 in MPEC 2018-V178 -- 2018 VX5
246KLENOT in the Czech Republic, 13 in MPECs 2018-V178 & 2018-V181 -- 2018 VY, 2018 VX5, 2018 VX, 2018 VW4, 2018 VV, 2018 VO3, 2018 VM6, 2018 VH2, 2018 VF3, 2018 VB1, 2018 VA8, 2018 UR2, 2018 RL
108Montelupo Obs. in Italy, 2 in MPEC 2018-V178 -- 418929, 1627
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPECs 2018-V180 & 2018-V181 -- 2018 VZ7, 2018 VA8
Z80Northolt Branch Obs. in England, 1 in MPEC 2018-V178 -- 2018 UQ1
I41Palomar Transient Factory (PTF) in southern California, 8 in MPEC 2018-V178 -- 2018 VW4, 2018 VM6, 2018 TC3, 2015 NU2, 523592, 454177, 16816, 137805
F52Pan-STARRS 2 (PS2) in Hawaii, 8 in MPECs 2018-V178 & 2018-V179 -- 2018 VZ1, 2018 VY7, 2018 VK1, 2018 UJ, 2016 VS5, 2003 TK1, 395207, 154300
D29Purple Mtn. Obs. Xuyi Station in China, 21 in MPEC 2018-V178 -- 2018 VZ1, 2018 VS6, 2018 VK1, 2018 TK2, 2016 VS5, 2011 OL5, 518463, 427643, 414903, 395207, 354663, 250162, 224926, 154300, 136773, 12538, 5751, 4401, 3199, 2062, 719
H36Sandlot Obs. in Kansas, 1 in MPEC 2018-V179 -- 2018 VY7
C95SATINO-1 in France, 1 in MPEC 2018-V178 -- 283729
Y28Sertao de Itaparica Obs. in Brazil, 1 in MPEC 2018-V178 -- 2001 RA18
691Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2018-V178 -- 2018 TK2, 2018 TC3
291Spacewatch 1.8m telescope in Arizona, 3 in MPEC 2018-V178 -- 2018 VM1, 2018 NN4, 2016 JG12
I52Steward Obs. Mt. Lemmon Station in Arizona, 3 in MPECs 2018-V178, 2018-V179 & 2018-V181 -- 2018 VY7, 2018 VM3, 2018 VA8
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2018-V178 -- 2018 SK3
L01Visnjan Obs., 1 in MPEC 2018-V179 -- 2018 VY7
C51WISE in Earth polar orbit, 5 in MPEC 2018-V178 -- 329395, 242147, 163899, 141498, 4401
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 13 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 VA8JPL Sentry18022098-2116382.42343429e-05-5.76-6.270JPL: Computed at 09:35 today Pacific time based on 23 observations spanning 1.0323 days (2018-Nov-12.28874 to 2018-Nov-13.32103). Diameter approximately 0.014 km. from weighted mean H=26.89.
2018 VS6JPL Sentry17102083-2118190.000277324373-4.58-4.660JPL: Computed at 07:06 today Pacific time based on 64 observations spanning 3.1259 days (2018-Nov-09.544497 to 2018-Nov-12.67042). Diameter approximately 0.014 km. from weighted mean H=26.88.
2018 TY4JPL Sentry17102033-203313.134e-04-4.51-4.510JPL: Computed at 06:57 today Pacific time based on 23 observations spanning 30.849 days (2018-Oct-10.29667 to 2018-Nov-10.145307). Diameter approximately 0.008 km. from weighted mean H=28.12.
2010 VP139JPL Sentry17102019-21163861.39132249e-05-6.53-7.860JPL: Computed at 15:22 April 7th of 2017 Pacific time based on 12 observations spanning .04588 days (2010-Nov-14.27911 to 2010-Nov-14.32499). Diameter approximately 0.006 km. from weighted mean H=28.60.
2009 VZ39JPL Sentry17102018-21169097.071014e-06-6.23-7.600JPL: Computed at 11:17 April 7th of 2017 Pacific time based on 8 observations spanning .04342 days (2009-Nov-10.27204 to 2009-Nov-10.31546). Diameter approximately 0.009 km. from weighted mean H=27.89.

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 13 November '18

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

1934Generated Traffic Report
1802Noted that JPL Sentry has posted 2018 VA8 as an impact risk - see above
1710Noted that JPL Sentry has updated its 2009 VZ39 risk assessment - see above
Noted that JPL Sentry has updated its 2010 VP139 risk assessment - see above
Noted that JPL Sentry has updated its 2018 TY4 risk assessment - see above
Noted that JPL Sentry has updated its 2018 VS6 risk assessment - see above
Grabbed MPEC 2018-V178 - Daily Orbit Update - see above
Grabbed MPEC 2018-V179 - 2018 VY7 - see above
Grabbed MPEC 2018-V180 - 2018 VZ7 - see above
Grabbed MPEC 2018-V181 - 2018 VA8 - see above