Contents  on 3 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 3 November '18

Nine objects reported inside ten LD

Bulletin - 2351, updated 0023 UTC:  Three new discoveries of close passers have been announced.

Earth passageI D~Size~Inside ten LDNotes
6.81 LD at 1156 UTC Oct. 292018 VZ32 m Oct. 27 - Nov. 1MPEC
7.60 LD at 0843 UTC today2018 VA113 m Oct. 31 - Nov. 8MPEC
9.00 LD at 2009 UTC Nov. 22018 VT14 m Nov. 1 - 5MPEC


There are nine visitors reported within ten lunar distances (LD) of Earth today, two of them in or leaving Earth's sphere of gravitational influence (SOI). 2018 VG comes its closest to our planet on this passage, reaching 1.19 LD at 0028 UTC, and 2018 UD3, while moving out from 1.67 to 2.63 LD, passes the Moon at 1.87 LD at 0641 UTC.

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
1.19 LD today 2018 VG 11 m  1.19 LD Oct. 28 - Nov. 8 NHATS target, Earth closest at 0028 UTC - DOU
1.44 LD Oct. 28 2018 VC 18 m  6.01 to 7.13 LD Oct. 20 - Nov. 6 NHATS target, risk
1.47 LD Oct. 31 2018 VL 10 m  5.03 to 6.74 LD Oct. 25 - Nov. 5 NEW, NHATS target - MPEC
1.62 LD yesterday 2018 UD3 19 m  1.67 to 2.63 LD Oct. 27 - Nov. 8 Moon closest 1.87 LD at 0641 UTC
1.73 LD Oct. 30 2018 VD 13 m  9.94 to 13.06 LD Oct. 27 - today exits ten LD
3.92 LD Dec. 2 2018 TG6 11 m  8.68 from 8.94 LD Oct. 30 - Jan. 5 NHATS target - DOU
5.37 LD Oct. 30 2018 UC 22 m  8.69 to 10.42 LD Oct. 26 - today NHATS target, exits ten LD
5.70 LD yesterday 2018 VB 22 m  5.88 to 6.65 LD Oct. 29 - Nov. 6 NHATS target
7.42 LD tomorrow 2018 UY1 51 m  7.61 from 8.22 LD Nov. 1 - 8 NHATS target - DOU

This report was generated at 2020 UTC with the discoveries announced late yesterday of outbound 2018 VL (MPEC) and already departed 2018 VK (MPEC), which went by us at 7.72 LD on October 29th. Today's DOU MPEC has follow-up for approaching 2018 TF3, risk-listed inbound 2018 TG6, passing 2018 VG, outbound 2018 UY1, and three departed objects: 2018 TZ5 and risk-listed 2018 TR and 2018 TB, plus distant 2015 TB145. After incorporating today's astrometry into calculating the orbit for 2018 TG6, JPL is now showing there is no longer any uncertainty in its passage time and distance, This little object will spend a relatively long 67.00 days inside our ten-LD traffic reporting "bubble," not leaving until the new year.

Approaching - sorted by 10-LD bubble entry date
Earth passage I D ~Size Distance today  Inside ten LD Notes
7.77 LD Nov. 5 2018 TF3 290 m  11.22 from 14.92 LD tomorrow - Nov. 7 DOU
9.42 LD Nov. 13 2018 UQ1 143 m  29.43 from 32.16 LD Nov. 12 - 15
7.4   LD Nov. 27* 2008 WD14 89 m  47.5 from 49.5 LD Nov. 23 - 30 EPU +/- 2.04 days*
4.1   LD Dec. 9* 2013 VX4 62 m  50.2 from 51.4 LD Dec. 3 - 15 EPU +/- 2.35 days*
7.36 LD Dec. 22 163899 2003 SD220 1.17 km  59.99 from 60.93 LD Dec. 17 - 26 NHATS target
7.3   LD Jan. 9* 2013 YM2 19 m  59.7 from 60.4 LD Jan. 2 - 16 EPU +/- 1.25 days*, NHATS target
* EPU = Earth passage uncertainty


<< Reading:  NASA/JPL has announced that the Dawn spacecraft, in orbit around 1 Ceres, has failed to communicate and, as anticipated, has run out of the fuel used to point its antenna and solar panels. This ends the mission, which began in September 2007 and previously orbited 4 Vesta, but there is much work left ahead, studying all the data that has been collected.



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 approached Earth within ten LD since A/CC began these traffic reports eleven-plus years ago but is not coming so close now. 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 3 November '18

The MPC's NEO Confirmation Page has 44 listings

When last checked at 2350 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 44 objects listed. Of these, 29 were "one nighters." The Tracking News counted a total of 63 listings on the NEOCP on this day.

New MPECs  on 3 November '18

Minor Planet Electronic Circulars

There were thirteen MPECs posted this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2018-V28 - "23:55 UT" - 2018 VB1


MPEC 2018-V27 - "23:51 UT" - 2018 VZ


MPEC 2018-V26 - "23:47 UT" - 2018 VA1


MPEC 2018-V25 - "23:43 UT" - 2018 VT


MPEC 2018-V24 - "23:39 UT" - 2018 VY


MPEC 2018-V23 - "23:35 UT" - 2018 VX


MPEC 2018-V22 - "23:30 UT" - 2018 VW


MPEC 2018-V21 - "23:26 UT" - 2018 VV


MPEC 2018-V20 - "23:22 UT" - 2018 VU


MPEC 2018-V19 - "23:17 UT" - 2018 VS


MPEC 2018-V18 - "23:15 UT" - 2018 VR


MPEC 2018-V17 - "23:00 UT" - 2015 FB35


<< DOU on 3 Nov. '18 >>  MPEC 2018-V16 - "12:05 UT" - Daily Orbit Update

Observers  on 3 November '18

A total of 30 observers appeared in this day's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 16 in MPEC 2018-V16 -- 2018 UQ2, 2018 UJ1, 2018 UJ, 2018 UH, 2018 UC1, 2018 TQ2, 2018 TN6, 2018 TF3, 2018 TE3, 2018 RW7, 2018 RV5, 2018 RO2, 2018 RK7, 2018 RD7, 2018 FN4, 1997 VM4
T05ATLAS Haleakala in Hawaii, 12 in MPECs 2018-V16, 2018-V23, 2018-V24 & 2018-V27 -- 2018 VZ, 2018 VY, 2018 VX, 2018 UF, 2015 NU2, 65706, 523631, 481025, 457260, 20460, 3552, 3200
T08ATLAS Mauna Loa in Hawaii, 36 in MPECs 2018-V16, 2018-V21, 2018-V22, 2018-V23, 2018-V27 & 2018-V28 -- 2018 VZ, 2018 VX, 2018 VW, 2018 VV, 2018 VB1, 2018 UY1, 2018 UR2, 2018 UQ2, 2007 UL12, 523815, 523628, 518635, 468481, 446924, 438429, 414903, 37336, 36284, 31345, 250697, 250162, 18109, 17511, 17274, 163818, 155140, 154300, 137032, 13553, 12538, 9856, 6456, 5143, 4401, 1916, 719
160Castelmartini Obs. in Italy, 6 in MPEC 2018-V16 -- 2018 RV5, 2005 WF57, 88263, 523603, 37336, 159495
703Catalina Sky Survey (CSS) in Arizona, 26 in MPECs 2018-V16, 2018-V21, 2018-V24 & 2018-V25 -- 2018 VY, 2018 VV, 2018 VT, 2018 TF3, 2018 TC3, 2015 TB145, 2001 VC2, 85774, 55532, 523815, 523587, 518640, 518463, 516803, 427643, 382459, 31210, 162687, 6178, 5751, 5131, 4953, 4401, 1916, 1627, 719
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 4 in MPECs 2018-V17, 2018-V22, 2018-V23 & 2018-V27 -- 2018 VZ, 2018 VX, 2018 VW, 2015 FB35
Z99Clixby Obs. in England, 1 in MPEC 2018-V24 -- 2018 VY
K88GINOP-KHK in Hungary, 3 in MPECs 2018-V21, 2018-V23 & 2018-V28 -- 2018 VX, 2018 VV, 2018 VB1
E94Gisborne Obs. in New Zealand, 1 in MPEC 2018-V23 -- 2018 VX
J95Great Shefford Obs. in England, 8 in MPECs 2018-V16, 2018-V18, 2018-V19, 2018-V20, 2018-V21, 2018-V24, 2018-V25 & 2018-V26 -- 2018 VY, 2018 VV, 2018 VU, 2018 VT, 2018 VS, 2018 VR, 2018 VG, 2018 VA1
P93JAXA Space Tracking & Communications Center (JAXA STCC) in Japan, 4 in MPECs 2018-V21, 2018-V23, 2018-V24 & 2018-V28 -- 2018 VY, 2018 VX, 2018 VV, 2018 VB1
Q67JBL Obs., 1 in MPEC 2018-V23 -- 2018 VX
H01Magdalena Ridge Obs. (MRO) in New Mexico, 2 in MPECs 2018-V18 & 2018-V20 -- 2018 VU, 2018 VR
G96Mt. Lemmon Survey (MLS) in Arizona, 35 in MPECs 2018-V16, 2018-V18, 2018-V19, 2018-V20, 2018-V21, 2018-V25, 2018-V26 & 2018-V28 -- 2018 VV, 2018 VU, 2018 VT, 2018 VS, 2018 VR, 2018 VB1, 2018 VA1, 2018 UY1, 2018 UR2, 2018 UQ2, 2018 UJ, 2018 TZ5, 2018 TG6, 2018 QP, 2018 NB, 2018 KF3, 2016 VS5, 2011 KN9, 52768, 523668, 523621, 468005, 446924, 438429, 414903, 395207, 382395, 252558, 25143, 225312, 155140, 154300, 153591, 9058, 5143
Z80Northolt Branch Obs. in England, 2 in MPECs 2018-V16 & 2018-V24 -- 2018 VY, 2002 VE68
G34Oberfrauendorf Obs. in Germany, 1 in MPEC 2018-V24 -- 2018 VY
I41Palomar Transient Factory in southern California, 1 in MPEC 2018-V16 -- 16834
F52Pan-STARRS 2 (PS2) in Hawaii, 31 in MPECs 2018-V16, 2018-V19, 2018-V20, 2018-V21, 2018-V25, 2018-V26 & 2018-V28 -- 2018 VV, 2018 VU, 2018 VT, 2018 VS, 2018 VB1, 2018 VA1, 2018 UQ2, 2018 UJ, 2018 TZ5, 2018 QP, 2016 VS5, 2016 RH18, 2015 SF20, 2014 XR6, 2011 KN9, 2007 UL12, 523628, 514652, 413260, 256412, 252558, 250697, 250162, 225312, 162168, 155110, 154300, 152952, 138815, 11398, 3288
D29Purple Mtn. Obs. Xuyi Station in China, 10 in MPEC 2018-V16 -- 2018 RK7, 2018 KE3, 67399, 523779, 443923, 252558, 16834, 137427, 3691, 3288
C95SATINO-1 in France, 1 in MPEC 2018-V16 -- 12711
0948program code 8 via Simeis Obs. in Ukraine, 2 in MPEC 2018-V16 -- 65733, 54660
G40(program code "(" (17) via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2018-V21 -- 2018 VV
I33SOAR in Chile, 3 in MPEC 2018-V16 -- 2018 TG6, 2018 RY7, 2017 SN16
691Spacewatch 0.9m telescope in Arizona, 14 in MPECs 2018-V16, 2018-V19 & 2018-V28 -- 2018 VS, 2018 VB1, 2018 UJ1, 2018 UJ, 2018 TP, 2018 TO1, 2018 SN, 2017 EB3, 2015 XE352, 2015 SF20, 523812, 523593, 514652, 442742
291Spacewatch 1.8m telescope in Arizona, 9 in MPEC 2018-V16 -- 2018 UG1, 2018 TR, 2018 TJ6, 2018 TG6, 2018 TB, 2016 XH2, 2012 FN62, 2005 YA37, 516454
I52Steward Obs. Mt. Lemmon Station in Arizona, 31 in MPECs 2018-V16, 2018-V18, 2018-V19, 2018-V20, 2018-V21, 2018-V23, 2018-V24, 2018-V25, 2018-V26, 2018-V27 & 2018-V28 -- 2018 VZ, 2018 VY, 2018 VX, 2018 VV, 2018 VU, 2018 VT, 2018 VS, 2018 VR, 2018 VG, 2018 VF, 2018 VE, 2018 VB1, 2018 VA1, 2018 VA, 2018 UY1, 2018 US2, 2018 UQ2, 2018 UM1, 2018 UJ2, 2018 UJ, 2018 UE3, 2018 UD1, 2018 UC3, 2018 UA3, 2018 TC3, 2018 RV5, 2018 RK7, 2018 LO6, 2018 KF3, 2017 KE35, 2016 VS5
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 2 in MPEC 2018-V16 -- 2018 UM1, 2018 UH
L01Visnjan Obs., 2 in MPECs 2018-V21 & 2018-V24 -- 2018 VY, 2018 VV
718Wiggins Obs. in Utah, 1 in MPEC 2018-V24 -- 2018 VY
C51WISE in Earth polar orbit, 5 in MPEC 2018-V16 -- 2011 WM46, 52387, 523592, 163818, 1627
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 3 November '18

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2350 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 VCNEODyS16302106-2118243.3e-06-6.64-6.97-NEODyS: "Based on 40 optical observations (of which 0 are rejected as outliers) from 2018-11-01.250 to 2018-11-01.983."
2018 UM1JPL Sentry16302072-2116208.2854977e-05-3.75-4.140JPL: Computed at 08:14 today Pacific time based on 113 observations spanning 14.964 days (2018-Oct-19.1455 to 2018-Nov-03.1093). Diameter approximately 0.068 km. from weighted mean H=23.47.
NEODyS16302083-2117253.45e-05-4.15-4.440NEODyS: "Based on 108 optical observations (of which 0 are rejected as outliers) from 2018-10-19.146 to 2018-11-02.169."
2018 UHJPL Sentry1630R E M O V E DJPL: Risk listing removed at 1505 UTC today
2018 TJ6JPL Sentry16302111-211135.4106e-07-5.87-6.040JPL: Computed at 08:03 today Pacific time based on 37 observations spanning 18.719 days (2018-Oct-15.51484 to 2018-Nov-03.2338). Diameter approximately 0.067 km. from weighted mean H=23.53.
2018 TG6NEODyS1630R E M O V E D-
2018 TRJPL Sentry16302116-211612.626e-08-8.23-8.230JPL: Computed at 07:58 today Pacific time based on 72 observations spanning 31.868 days (2018-Oct-02.30976 to 2018-Nov-03.17823). Diameter approximately 0.028 km. from weighted mean H=25.41.
2018 TBJPL Sentry16302095-210329.7107e-07-6.23-6.240JPL: Computed at 07:51 today Pacific time based on 179 observations spanning 32.031 days (2018-Oct-02.42196 to 2018-Nov-03.45287). Diameter approximately 0.037 km. from weighted mean H=24.80.

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 3 November '18

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

0013 11/4Grabbed MPEC 2018-V27 - 2018 VZ - see above
Grabbed MPEC 2018-V28 - 2018 VB1 - see above
2350Grabbed MPEC 2018-V18 - 2018 VR - see above
Grabbed MPEC 2018-V19 - 2018 VS - see above
Grabbed MPEC 2018-V20 - 2018 VU - see above
Grabbed MPEC 2018-V21 - 2018 VV - see above
Grabbed MPEC 2018-V22 - 2018 VW - see above
Grabbed MPEC 2018-V23 - 2018 VX - see above
Grabbed MPEC 2018-V24 - 2018 VY - see above
Grabbed MPEC 2018-V25 - 2018 VT - see above
Grabbed MPEC 2018-V26 - 2018 VA1 - see above
2302Grabbed MPEC 2018-V17 - 2015 FB35 - see above
2020Generated Traffic Report
1630Noted that JPL Sentry has updated its 2018 TB risk assessment - see above
Noted that NEODyS has removed 2018 TG6 as an impact risk - see above
Noted that JPL Sentry has updated its 2018 TJ6 risk assessment - see above
Noted that JPL Sentry has updated its 2018 TR risk assessment - see above
Noted that JPL Sentry 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
Noted that NEODyS has posted 2018 VC as an impact risk - see above
Grabbed MPEC 2018-V16 - Daily Orbit Update - see above