Contents  on 4 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 4 November '18

Twelve objects reported inside ten LD

Twelve asteroids are being tracked inside ten lunar distances (LD) of our planet today. Nearest is 2018 VG, which leaves Earth's sphere of gravitational influence, moving out from 2.05 to 3.57 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  2.70 to 4.84 LD Oct. 29 - Nov. 7 NEW, intruder, risk - MPEC
1.19 LD yesterday 2018 VG 11 m  2.05 to 3.57 LD Oct. 28 - Nov. 8 NHATS target, exits Earth SOI
1.44 LD Oct. 28 2018 VC 18 m  7.13 to 8.26 LD Oct. 20 - Nov. 6 NHATS target, risk
1.47 LD Oct. 31 2018 VL 10 m  6.74 to 8.47 LD Oct. 25 - tomorrow NHATS target
1.62 LD Nov. 2 2018 UD3 20 m  2.62 to 4.04 LD Oct. 27 - Nov. 8 DOU
3.92 LD Dec. 2 2018 TG6 11 m  8.43 from 8.68 LD Oct. 30 - Jan. 5 NHATS target - DOU
5.70 LD Nov. 2 2018 VB 22 m  6.65 to 7.86 LD Oct. 29 - Nov. 6 NHATS target
7.42 LD today 2018 UY1 51 m  7.42 LD Nov. 1 - 8 NHATS target, Earth closest at 2124 UTC - DOU
7.60 LD today 2018 VA1 14 m  7.60 LD Oct. 31 - Nov. 8 NEW, NHATS target, Earth closest at 0842 UTC - MPEC
7.77 LD tomorrow 2018 TF3 292 m  8.51 from 11.23 LD today - Nov. 7 enters ten LD - DOU
8.66 LD Nov. 6 2018 VN1 20 m  8.92 from 9.28 LD Nov. 2 - 11 NEW - MPEC
9.00 LD Nov. 2 2018 VT 14 m  9.53 to 10.73 LD Nov. 1 - 4 NEW, exits ten LD - MPEC

This report was generated at 2320 UTC with three discoveries announced late yesterday and three announced today, including today's risk-listed outbound intruder 2018 VP1 (MPEC), which passed us at 0.39 LD on November 2nd. The others are inbound 2018 VN1 (MPEC), passing 2018 VA1 (MPEC), outbound 2018 VT (MPEC), and already departed objects 2018 VZ (MPEC), which went by us at 6.81 LD on October 29th, and 2018 VO1 (MPEC), which passed us at about 9.26 LD on the 27th. The recovery of distant 2009 UC19 (MPEC) was also announced today. And today's DOU MPEC has follow-up for approaching 2018 UQ1, inbound 2018 TG6 and 2018 TF3, passing 2018 UY1, outbound 2018 UD3, and three departed objects: 2018 VK and risk-listed 2018 TP5 and 2018 TR.

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  26.74 from 29.42 LD Nov. 12 - 15 DOU
7.4   LD Nov. 27* 2008 WD14 89 m  45.6 from 47.5 LD Nov. 23 - 30 EPU +/- 2.04 days*
4.1   LD Dec. 9* 2013 VX4 62 m  48.9 from 50.2 LD Dec. 3 - 15 EPU +/- 2.35 days*
7.36 LD Dec. 22 163899 2003 SD220 1.17 km  59.03 from 59.99 LD Dec. 17 - 26 NHATS target
7.3   LD Jan. 9* 2013 YM2 19 m  59.1 from 59.7 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. "Distant" is used here to describe an object that has come within ten LD since A/CC began these traffic reports (2007) but is not presently so close. 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 4 November '18

The MPC's NEO Confirmation Page has 43 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 43 objects listed. Of these, 30 were "one nighters." So far The Tracking News has counted a total of 61 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 4 November '18

Minor Planet Electronic Circulars

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


MPEC 2018-V42 - "20:58 UT" - 2018 VP1


MPEC 2018-V41 - "20:41 UT" - 2018 VO1


MPEC 2018-V40 - "20:26 UT" - 2018 VN1


MPEC 2018-V39 - "20:21 UT" - 2018 VM1


MPEC 2018-V38 - "20:17 UT" - 2018 VL1


MPEC 2018-V37 - "20:13 UT" - 2018 VK1


MPEC 2018-V36 - "20:09 UT" - 2018 VJ1


MPEC 2018-V35 - "20:05 UT" - 2018 VH1


MPEC 2018-V34 - "20:01 UT" - 2018 VG1


MPEC 2018-V33 - "19:56 UT" - 2018 VF1


MPEC 2018-V32 - "18:54 UT" - 2015 LJ24


MPEC 2018-V31 - "18:52 UT" - 2013 LK7


MPEC 2018-V30 - "18:50 UT" - 2009 UC19


<< DOU on 4 Nov. '18 >>  MPEC 2018-V29 - "12:06 UT" - Daily Orbit Update

Observers  on 4 November '18

A total of 24 observers appear in today's MPECs.

CodeObserver / observatory
834AAAA Buenos Aires Obs. in Argentina, 2 in MPEC 2018-V29 -- 418929, 18109
T05ATLAS Haleakala in Hawaii, 7 in MPECs 2018-V29 & 2018-V34 -- 2018 VG1, 68216, 53789, 21277, 8566, 1916, 719
703Catalina Sky Survey (CSS) in Arizona, 23 in MPECs 2018-V29, 2018-V40 & 2018-V41 -- 2018 VV, 2018 VO1, 2018 VN1, 2018 UQ1, 2009 SV17, 88263, 65996, 54401, 523603, 523595, 523587, 481542, 457260, 454177, 42286, 409204, 381564, 349507, 170891, 16834, 16816, 3691, 1620
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 13 in MPECs 2018-V29, 2018-V31 & 2018-V32 -- 2018 UV1, 2018 UG1, 2018 TK3, 2018 SZ, 2018 RU3, 2018 RB8, 2018 RA7, 2018 PX19, 2018 PM9, 2018 NT3, 2018 MV4, 2015 LJ24, 2013 LK7
734Farpoint Obs. in Kansas, 1 in MPEC 2018-V34 -- 2018 VG1
X31Galilei Obs., 1 in MPEC 2018-V29 -- 2018 VX
K88GINOP-KHK in Hungary, 5 in MPECs 2018-V29, 2018-V34, 2018-V38, 2018-V40 & 2018-V41 -- 2018 VY, 2018 VO1, 2018 VN1, 2018 VL1, 2018 VG1
J95Great Shefford Obs. in England, 1 in MPEC 2018-V34 -- 2018 VG1
P93JAXA Space Tracking & Communications Center (JAXA STCC) in Japan, 2 in MPECs 2018-V34 & 2018-V38 -- 2018 VL1, 2018 VG1
H01Magdalena Ridge Obs. (MRO) in New Mexico, 8 in MPECs 2018-V33, 2018-V35, 2018-V36, 2018-V37, 2018-V38, 2018-V39, 2018-V40 & 2018-V42 -- 2018 VP1, 2018 VN1, 2018 VM1, 2018 VL1, 2018 VK1, 2018 VJ1, 2018 VH1, 2018 VF1
G96Mt. Lemmon Survey (MLS) in Arizona, 30 in MPECs 2018-V29, 2018-V30, 2018-V33, 2018-V35, 2018-V36, 2018-V37, 2018-V38 & 2018-V39 -- 2018 VM1, 2018 VL1, 2018 VK1, 2018 VJ1, 2018 VH1, 2018 VF1, 2018 UX1, 2018 TS, 2018 TO1, 2018 KR2, 2018 KG1, 2018 FJ4, 2017 KE35, 2009 UC19, 523803, 523628, 436116, 382395, 31345, 306595, 256412, 250697, 244670, 18109, 162168, 13553, 11500, 11398, 9856, 1865
I41Palomar Transient Factory (PTF) in southern California, 6 in MPECs 2018-V29 & 2018-V42 -- 2018 VP1, 2018 UY1, 2016 UA, 1999 RB32, 457212, 409204
F52Pan-STARRS 2 (PS2) in Hawaii, 9 in MPECs 2018-V29, 2018-V36, 2018-V37, 2018-V38 & 2018-V39 -- 2018 VM1, 2018 VL1, 2018 VK1, 2018 VJ1, 2018 TL2, 2018 RM2, 358744, 185702, 115052
D29Purple Mtn. Obs. Xuyi Station in China, 10 in MPEC 2018-V29 -- 2018 UQ1, 2011 XE, 2009 SV17, 2005 WF57, 457260, 20826, 16834, 4055, 3691, 3200
L04ROASTERR-1 in Romania, 2 in MPECs 2018-V34 & 2018-V40 -- 2018 VN1, 2018 VG1
C95SATINO-1 in France, 2 in MPECs 2018-V29 & 2018-V34 -- 2018 VG1, 16834
0948program code 8 via Simeis Obs. in Ukraine, 3 in MPEC 2018-V29 -- 2018 TF3, 54660, 18109
691Spacewatch 0.9m telescope in Arizona, 11 in MPEC 2018-V29 -- 2018 UM1, 2018 UG1, 2018 TS, 2018 TP, 2018 TO1, 2018 LB1, 2017 EB3, 2015 XE352, 2014 XR6, 523812, 514568
291Spacewatch 1.8m telescope in Arizona, 5 in MPEC 2018-V29 -- 2018 TJ6, 2018 TG6, 2018 KB1, 2014 SP142, 2005 YA37
W34Squirrel Valley Obs. in North Carolina, 2 in MPECs 2018-V34 & 2018-V40 -- 2018 VN1, 2018 VG1
I52Steward Obs. Mt. Lemmon Station in Arizona, 23 in MPECs 2018-V29, 2018-V30, 2018-V34, 2018-V35, 2018-V36, 2018-V37, 2018-V38, 2018-V39, 2018-V40 & 2018-V41 -- 2018 VO1, 2018 VN1, 2018 VM1, 2018 VL1, 2018 VK1, 2018 VK, 2018 VJ1, 2018 VH1, 2018 VG1, 2018 VF, 2018 VE, 2018 VA, 2018 US2, 2018 UR2, 2018 UN1, 2018 UM1, 2018 UJ1, 2018 UG3, 2018 UE3, 2018 UC3, 2018 TU1, 2018 TG5, 2009 UC19
381Tokyo-Kiso Obs. in Japan, 2 in MPEC 2018-V29 -- 2018 UG3, 2018 UD3
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 3 in MPEC 2018-V29 -- 2018 TR, 2018 TP5, 2018 TJ6
L01Visnjan Obs., 7 in MPECs 2018-V29, 2018-V34, 2018-V35, 2018-V38, 2018-V40, 2018-V41 & 2018-V42 -- 2018 VX, 2018 VP1, 2018 VO1, 2018 VN1, 2018 VL1, 2018 VH1, 2018 VG1
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 4 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 Sentry22312020-202530.0014452095-4.26-4.260JPL: Computed at 14:00 today Pacific time based on 15 observations spanning 1.1039 days (2018-Nov-03.272495 to 2018-Nov-04.376404). Diameter approximately 0.002 km. from weighted mean H=30.73.
2018 UM1NEODyS20392083-2118253.0e-05-4.21-4.4-NEODyS #2 for the day: "Based on 122 optical observations (of which 0 are rejected as outliers) from 2018-10-19.146 to 2018-11-04.391."
JPL Sentry19002072-2116207.41283969e-05-3.80-4.180JPL: Computed at 06:38 today Pacific time based on 122 observations spanning 16.244 days (2018-Oct-19.1455 to 2018-Nov-04.38996). Diameter approximately 0.068 km. from weighted mean H=23.49.
2018 UHNEODyS1900R E M O V E D-
2018 TJ6NEODyS2039211141.85e-07-6.34-6.680NEODyS #2 for the day: "Based on 42 optical observations (of which 0 are rejected as outliers) from 2018-10-15.516 to 2018-11-04.229."
JPL Sentry19002111-211134.2761e-07-5.97-6.110JPL: Computed at 06:33 today Pacific time based on 42 observations spanning 19.713 days (2018-Oct-15.51484 to 2018-Nov-04.22794). Diameter approximately 0.067 km. from weighted mean H=23.52.
2018 TP5NEODyS20392085-2108358.69e-05-4.63-4.690NEODyS: "Based on 36 optical observations (of which 0 are rejected as outliers) from 2018-10-10.316 to 2018-11-02.341."
JPL Sentry19002086-2102130.0001533425894-4.37-4.400JPL: Computed at 06:31 today Pacific time based on 36 observations spanning 23.024 days (2018-Oct-10.3155 to 2018-Nov-02.339873). Diameter approximately 0.025 km. from weighted mean H=25.64.
2018 TRNEODyS20392113-211623.2e-07-7.17-7.170NEODyS #2 for the day: "Based on 75 optical observations (of which 1 are rejected as outliers) from 2018-10-02.311 to 2018-11-03.179."
JPL Sentry19002105-211622.4296e-07-7.26-7.320JPL: Computed at 06:29 today Pacific time based on 74 observations spanning 31.868 days (2018-Oct-02.30976 to 2018-Nov-03.17823). Diameter approximately 0.028 km. from weighted mean H=25.43.
2018 TBNEODyS19002095-210329.48e-07-6.25-6.260NEODyS: "Based on 185 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 4 November '18

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

2320Updated Traffic Report
2231Noted that JPL Sentry has posted 2018 VP1 as an impact risk - see above
2114Grabbed MPEC 2018-V41 - 2018 VO1 - see above
Grabbed MPEC 2018-V42 - 2018 VP1 - see above
2039Noted that NEODyS has updated its 2018 TJ6 risk assessment - see above
Noted that NEODyS has updated its 2018 TP5 risk assessment - see above
Noted that NEODyS has updated its 2018 TR risk assessment - see above
Noted that NEODyS has updated its 2018 UM1 risk assessment - see above
Grabbed MPEC 2018-V33 - 2018 VF1 - see above
Grabbed MPEC 2018-V34 - 2018 VG1 - see above
Grabbed MPEC 2018-V35 - 2018 VH1 - see above
Grabbed MPEC 2018-V36 - 2018 VJ1 - see above
Grabbed MPEC 2018-V37 - 2018 VK1 - see above
Grabbed MPEC 2018-V38 - 2018 VL1 - see above
Grabbed MPEC 2018-V39 - 2018 VM1 - see above
Grabbed MPEC 2018-V40 - 2018 VN1 - see above
1900Noted that NEODyS has updated its 2018 TB risk assessment - see above
Noted that JPL Sentry has updated its 2018 TJ6 risk assessment - see above
Noted that NEODyS has updated its 2018 TJ6 risk assessment - see above
Noted that JPL Sentry has updated its 2018 TP5 risk assessment - see above
Noted that JPL Sentry has updated its 2018 TR risk assessment - see above
Noted that NEODyS has updated its 2018 TR risk assessment - see above
Noted that NEODyS has removed 2018 UH 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
Grabbed MPEC 2018-V29 - Daily Orbit Update - see above
Grabbed MPEC 2018-V30 - 2009 UC19 - see above
Grabbed MPEC 2018-V31 - 2013 LK7 - see above
Grabbed MPEC 2018-V32 - 2015 LJ24 - see above