Contents  on 7 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 7 November '18

Eleven objects reported inside ten LD

Eleven asteroids are reported within ten lunar distances (LD) of Earth today. Nearest is 2018 VA2, inbound from 3.57 to 2.43 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
0.39 LD Nov. 2 2018 VP1 2 m  9.14 to 11.29 LD Oct. 29 - today intruder, exits ten LD, risk - DOU
0.99 LD Nov. 10 2018 VX1 10 m  3.83 from 5.13 LD Nov. 3 - 18 intruder, NHATS target - DOU
1.19 LD Nov. 3 2018 VG 13 m  6.86 to 8.53 LD Oct. 28 - tomorrow NHATS target
1.62 LD Nov. 2 2018 UD3 20 m  7.14 to 8.73 LD Oct. 27 - tomorrow
1.87 LD Nov. 9 2018 VA2 13 m  2.43 from 3.57 LD Nov. 2 - 15 NHATS target - DOU
3.62 LD Nov. 10 2018 VS1 16 m  7.14 from 9.28 LD yesterday - Nov. 14
3.92 LD Dec. 2 2018 TG6 12 m  7.70 from 7.94 LD Oct. 30 - Jan. 5 NHATS target - DOU
7.42 LD Nov. 4 2018 UY1 52 m  8.40 to 9.41 LD Nov. 1 - 8 NHATS target
7.62 LD Nov. 4 2018 VA1 14 m  8.92 to 9.94 LD Oct. 31 - tomorrow NHATS target
7.77 LD Nov. 5 2018 TF3 292 m  9.69 to 13.00 LD Nov. 4 - 7 exits ten LD
8.67 LD yesterday 2018 VN1 20 m  8.67 to 8.77 LD Nov. 2 - 11 NHATS target - DOU

This report was generated at 2020 UTC with follow-up in today's DOU MPEC for six objects currently in our active traffic tables above and below, and for six departed objects: 2018 VT, 2018 VL, 2018 VK, 2018 UB3, 2018 UC2, and risk-listed 2018 VC.

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 141 m  19.04 from 21.53 LD Nov. 12 - 15 DOU
7.4   LD Nov. 27* 2008 WD14 89 m  39.8 from 41.7 LD Nov. 23 - 30 EPU +/- 2.04 days*
4.1   LD Dec. 9* 2013 VX4 62 m  45.0 from 46.3 LD Dec. 3 - 15 EPU +/- 2.35 days*
7.36 LD Dec. 22 163899 2003 SD220 1.17 km  56.05 from 57.06 LD Dec. 17 - 26 NHATS target
7.3   LD Jan. 9* 2013 YM2 19 m  57.1 from 57.8 LD Jan. 2 - 16 EPU +/- 1.25 days*, NHATS target
* EPU = Earth passage uncertainty


<< Reading:  The news media has been widely reporting on a well-informed conjecture that 1I/`Oumuamua (A/2017 U1) (links) might be an alien artifact, perhaps a derelict solar sail. SFY/Bad Astronomy today says not so fast.



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 7 November '18

The MPC's NEO Confirmation Page has 93 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 93 objects listed. Of these, 51 were "one nighters." So far The Tracking News has counted a total of 110 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 7 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.


<< DOU on 7 Nov. '18 >>  MPEC 2018-V62 - "13:07 UT" - Daily Orbit Update


MPEC 2018-V61 - "03:13 UT" - 2015 VZ2


MPEC 2018-V60 - "02:40 UT" - 2015 XT1


MPEC 2018-V59 - "02:24 UT" - 2016 VG2

Observers  on 7 November '18

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

CodeObserver / observatory
T05ATLAS Haleakala in Hawaii, 13 in MPEC 2018-V62 -- 2018 VY, 2002 VE68, 85804, 523805, 523631, 457260, 454177, 450779, 325769, 20460, 16816, 3552, 1620
T08ATLAS Mauna Loa in Hawaii, 38 in MPEC 2018-V62 -- 2018 VX, 2018 VB1, 2018 UG3, 2018 RL, 2007 UL12, 2004 FW1, 54401, 523815, 518635, 518463, 481542, 468481, 455550, 443923, 438429, 427643, 414903, 349507, 31345, 256412, 250697, 250162, 18109, 17274, 16834, 163818, 154300, 137032, 13553, 12538, 9856, 6456, 5143, 4401, 3691, 1916, 1865, 719
069Baldone Obs. in Latvia, 1 in MPEC 2018-V62 -- 345705
160Castelmartini Obs. in Italy, 6 in MPEC 2018-V62 -- 65733, 523604, 481542, 457260, 16834, 155140
703Catalina Sky Survey (CSS) in Arizona, 15 in MPEC 2018-V62 -- 2018 VN1, 2018 VA2, 2018 UE3, 2018 SN, 2002 VE68, 54401, 523604, 481542, 457260, 454100, 349507, 228368, 16816, 3200, 1620
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 4 in MPEC 2018-V62 -- 2018 VU, 2018 VF1, 2018 TX5, 2014 WE365
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2018-V62 -- 2018 UC2
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 4 in MPECs 2018-V60, 2018-V61 & 2018-V62 -- 2018 VQ1, 2018 VC, 2015 XT1, 2015 VZ2
K88GINOP-KHK in Hungary, 1 in MPEC 2018-V62 -- 2018 VH2
P93JAXA Space Tracking & Communications Center (JAXA STCC) in Japan, 2 in MPEC 2018-V62 -- 2018 VX1, 2018 VW1
C41MASTER-II Kislovodsk in Russia, 1 in MPEC 2018-V62 -- 2018 UQ1
711McDonald Obs. in Texas, 7 in MPEC 2018-V62 -- 2018 UA1, 2018 SZ2, 2018 SK1, 2018 SB1, 2018 SA2, 2018 RC8, 2018 MW6
B67Mirasteilas Obs. in Switzerland, 1 in MPEC 2018-V62 -- 2018 RL
474Mt. John Obs. in New Zealand, 2 in MPEC 2018-V62 -- 2018 VW, 2018 VT
G96Mt. Lemmon Survey (MLS) in Arizona, 33 in MPEC 2018-V62 -- 2018 VA2, 2018 UX1, 2018 TW, 2018 TO2, 2018 TK2, 2018 NU3, 2015 TF202, 2004 FW1, 2001 OD3, 87311, 65674, 523819, 523818, 523611, 518463, 468481, 445267, 439313, 427643, 41440, 40263, 358744, 326946, 30825, 253106, 202435, 185702, 115052, 5653, 4401, 4183, 1916, 719
I41Palomar Transient Factory (PTF) in southern California, 8 in MPEC 2018-V62 -- 2018 VH2, 2018 UF, 2015 MQ101, 2013 VD13, 68359, 438429, 155340, 1863
F51Pan-STARRS 1 in Hawaii, 1 in MPECs 2018-V59 & 2018-V62 -- 2016 VG2
F52Pan-STARRS 2 (PS2) in Hawaii, 34 in MPEC 2018-V62 -- 2018 VX, 2018 VH1, 2018 UD, 2018 UC1, 2018 TY2, 2018 TS5, 2018 TC6, 2018 RK7, 2018 JD5, 2016 TR54, 2015 UH51, 2014 XR6, 2005 TR45, 2001 OD3, 1992 BC, 523668, 523665, 514652, 442742, 34613, 30825, 226514, 224926, 202435, 17274, 155334, 154330, 152952, 12538, 11500, 9856, 6456, 5797, 5143
247roving observer, 1 in MPEC 2018-V62 -- 523815
C95SATINO-1 in France, 2 in MPEC 2018-V62 -- 2018 VL, 20790
K96Savelli Obs., 1 in MPEC 2018-V62 -- 2018 VA2
691Spacewatch 0.9m telescope in Arizona, 8 in MPEC 2018-V62 -- 2018 UM1, 2018 TY2, 2018 TO6, 2018 TG6, 2018 NN4, 2018 FJ4, 2008 LW16, 523593
291Spacewatch 1.8m telescope in Arizona, 7 in MPEC 2018-V62 -- 2018 TT, 2018 RS1, 2014 TW32, 2014 QC433, 2014 AY28, 2014 AA33, 2009 WF106
W34Squirrel Valley Obs. in North Carolina, 2 in MPEC 2018-V62 -- 54401, 3552
I52Steward Obs. Mt. Lemmon Station in Arizona, 36 in MPEC 2018-V62 -- 2018 VY1, 2018 VX, 2018 VV, 2018 VR, 2018 VL, 2018 VK, 2018 VJ1, 2018 VH1, 2018 VG1, 2018 VF, 2018 VC, 2018 VB1, 2018 VA, 2018 UY, 2018 US2, 2018 UR2, 2018 UN1, 2018 UM1, 2018 UJ1, 2018 UG3, 2018 UE3, 2018 UD1, 2018 UD, 2018 UC3, 2018 UB3, 2018 TY2, 2018 TX4, 2018 TW, 2018 TS5, 2018 TO1, 2018 TN6, 2018 TN1, 2018 TC6, 2018 TA3, 2018 RP8, 2016 VG2
A98Taurus-1 Obs. in Belarus, 2 in MPEC 2018-V62 -- 2018 UR2, 2002 VE68
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 2 in MPEC 2018-V62 -- 2018 VP1, 2018 VC
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 7 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 VP1JPL Sentry17002020-202530.002580374-4.03-4.030JPL: Computed at 07:54 today Pacific time based on 17 observations spanning 3.2845 days (2018-Nov-03.272495 to 2018-Nov-06.556977). Diameter approximately 0.002 km. from weighted mean H=30.77.
2018 VCJPL Sentry17002109-211875.7157e-06-6.36-6.660JPL: Computed at 07:57 today Pacific time based on 90 observations spanning 5.9312 days (2018-Nov-01.24873 to 2018-Nov-07.17991). Diameter approximately 0.018 km. from weighted mean H=26.32.
2018 UM1JPL Sentry17002095-211266.62733e-06-4.87-5.110JPL: Computed at 07:40 today Pacific time based on 140 observations spanning 19.053 days (2018-Oct-19.1455 to 2018-Nov-07.19819). Diameter approximately 0.067 km. from weighted mean H=23.53.

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 7 November '18

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

2020Generated Traffic Report
1700Noted that JPL Sentry has updated its 2018 UM1 risk assessment - see above
Noted that JPL Sentry has updated its 2018 VC risk assessment - see above
Noted that JPL Sentry has updated its 2018 VP1 risk assessment - see above
Grabbed MPEC 2018-V62 - Daily Orbit Update - see above
0430Grabbed MPEC 2018-V59 - 2016 VG2 - see above
Grabbed MPEC 2018-V60 - 2015 XT1 - see above
Grabbed MPEC 2018-V61 - 2015 VZ2 - see above