Contents  on 16 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 16 November '18

Fourteen objects reported inside ten LD

Fourteen asteroids are reported within ten lunar distances (LD) of our home world today. Nearest are 2018 VS8, which enters Earth's sphere of gravitational influence, moving in from 3.16 to 1.99 LD, and risk-listed NHATS target intruder 2018 VC7, heading out from 2.94 to 3.87 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
0.87 LD Nov. 13 2018 VC7 11 m  2.94 to 3.87 LD Nov. 2 - 23 intruder, NHATS target, risk
0.99 LD Nov. 10 2018 VX1 11 m  7.05 to 8.37 LD Nov. 3 - 18 intruder, NHATS target
1.95 LD tomorrow 2018 VS8 13 m  1.99 from 3.16 LD Nov. 12 - 21 Moon closest 2.56 LD at 2140 UTC - DOU
3.13 LD Nov. 11 2018 VA4 8 m  7.50 to 9.04 LD Nov. 6 - 17 NHATS target
3.50 LD Nov. 12 2018 VU8 9 m  5.38 to 6.35 LD Nov. 4 - 20 NHATS target
3.61 LD Nov. 14 2018 VX5 25 m  4.94 to 6.36 LD Nov. 9 - 19 DOU
3.92 LD Dec. 2 2018 TG6 12 m  5.79 from 5.98 LD Oct. 30 - Jan. 5 NHATS target, risk - DOU
4.11 LD Nov. 14 2018 VO3 14 m  5.25 to 6.46 LD Nov. 8 - 19 NHATS target
5.93 LD Nov. 11 2018 VH5 12 m  8.65 to 9.66 LD Nov. 5 - 17 NHATS target
6.42 LD Nov. 13 2018 VU7 13 m  7.71 to 9.04 LD Nov. 10 - 17
7.63 LD Nov. 20 2018 VP7 15 m  8.72 from 9.39 LD yesterday - Nov. 25 NHATS target - DOU
8.00 LD Nov. 13 2018 VR6 11 m  9.51 to 10.80 LD Nov. 10 - 16 exits ten LD
8.21 LD Nov. 25 2018 VT7 9 m  9.44 from 9.72 LD yesterday - Dec. 7 NHATS target - DOU
9.04 LD Nov. 14 2018 VD7 25 m  9.84 to 11.04 LD Nov. 12 - 16 exits ten LD

This report was generated at 2054 UTC with follow-up in today's DOU MPEC for five objects in the active traffic table above and for departed objects 2018 LQ2 and risk-listed 2018 VA8 and 2018 VC.

Approaching - sorted by 10-LD bubble entry date
Earth passage I D ~Size Distance today  Inside ten LD Notes
7.4   LD Nov. 27* 2008 WD14 89 m  22.1 from 24.0 LD Nov. 23 - 30 EPU +/- 2.04 days*
2.6   LD Dec. 15* 2018 VO9 15 m  17.2 from 17.7 LD Nov. 29 - Dec. 31 EPU +/- 1.28 hours*, NHATS target, risk
4.1   LD Dec. 9* 2013 VX4 62 m  33.1 from 34.4 LD Dec. 3 - 15 EPU +/- 2.35 days*
7.36 LD Dec. 22 163899 2003 SD220 1.17 km  46.33 from 47.47 LD Dec. 17 - 26 NHATS target
7.3   LD Jan. 9* 2013 YM2 19 m  50.5 from 51.2 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 16 November '18

The MPC's NEO Confirmation Page has 50 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 50 objects listed. Of these, 33 were "one nighters." So far The Tracking News has counted a total of 60 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 16 November '18

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been four MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2018-W04 - "22:36 UT" - Comet 46P/Wirtanen


MPEC 2018-W03 - "21:56 UT" - Comet C/2018 V1 (Machholz-Fujikawa-Iwamoto)


<< DOU on 16 Nov. '18 >>  MPEC 2018-W02 - "13:07 UT" - Daily Orbit Update


MPEC 2018-W01 - "02:52 UT" - 2013 UB3

Observers  on 16 November '18

A total of 59 observers appear in today's MPECs.

CodeObserver / observatory
L2729PREMOTE Obs., 1 in MPEC 2018-W04 -- 46P
834AAAA Buenos Aires Obs. in Argentina, 1 in MPEC 2018-W04 -- 46P
349Ageo Obs. in Japan, 1 in MPEC 2018-W04 -- 46P
J24Altamira Obs. in the Canary Islands, 2 in MPECs 2018-W03 & 2018-W04 -- C/2018 V1, 46P
E23Arcadia Obs. in New South Wales, 1 in MPEC 2018-W04 -- 46P
T05ATLAS Haleakala in Hawaii, 1 in MPEC 2018-W04 -- 46P
T08ATLAS Mauna Loa in Hawaii, 2 in MPECs 2018-W02 & 2018-W04 -- 2018 VT8, 46P
Q68Blue Mountains Obs. in New South Wales, 1 in MPEC 2018-W04 -- 46P
215Buchloe Obs. in Germany, 1 in MPEC 2018-W03 -- C/2018 V1
W96Campo Catino Austral Obs. (CAO) in Chile, 2 in MPECs 2018-W03 & 2018-W04 -- C/2018 V1, 46P
A77Chante-Perdrix Obs. in France, 1 in MPEC 2018-W03 -- C/2018 V1
J01Cielo Profundo Obs. in Spain, 2 in MPECs 2018-W03 & 2018-W04 -- C/2018 V1, 46P
850Cordell-Lorenz Obs. in Tennessee, 2 in MPECs 2018-W03 & 2018-W04 -- C/2018 V1, 46P
N55Corona Borealis Obs. in Tibet, 1 in MPEC 2018-W03 -- C/2018 V1
K02Eastwood Obs. in England, 1 in MPEC 2018-W03 -- C/2018 V1
K68Elianto Obs. in Italy, 1 in MPEC 2018-W03 -- C/2018 V1
E85Farm Cove Obs. in New Zealand, 1 in MPEC 2018-W04 -- 46P
372Geisei Obs. in Japan, 1 in MPEC 2018-W04 -- 46P
E89Geyserland Obs. in New Zealand, 1 in MPEC 2018-W04 -- 46P
K88GINOP-KHK in Hungary, 1 in MPEC 2018-W02 -- 2018 VL7
E94Gisborne Obs. in New Zealand, 1 in MPEC 2018-W04 -- 46P
L28ISON Castelgrande Obs., 1 in MPEC 2018-W03 -- C/2018 V1
Q62iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2018-W04 -- 46P
Q626Erik Bryssinck in Belgium via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2018-W04 -- 46P
Q62`Steven M. Tilley in Louisiana via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2018-W04 -- 46P
585Kiev Comet Station in Ukraine, 1 in MPEC 2018-W04 -- 46P
D95Kurihara Obs. in Japan, 2 in MPECs 2018-W03 & 2018-W04 -- C/2018 V1, 46P
212La Dehesilla Obs. in Spain, 1 in MPEC 2018-W04 -- 46P
W85LCO Cerro Tololo A in Chile, 1 in MPEC 2018-W04 -- 46P
W87LCO Cerro Tololo C in Chile, 1 in MPEC 2018-W04 -- 46P
K91LCO Sutherland A in South Africa, 1 in MPEC 2018-W02 -- 2018 VX8
688'program code "'" (16) via Lowell Obs. Anderson Mesa Station in Arizona, 1 in MPEC 2018-W04 -- 46P
H01Magdalena Ridge Obs. (MRO) in New Mexico, 2 in MPECs 2018-W01 & 2018-W04 -- 2013 UB3, 46P
C94MASTER-II Tunka in Russia, 1 in MPEC 2018-W02 -- 3552
B67Mirasteilas Obs. in Switzerland, 2 in MPEC 2018-W02 -- 2018 VZ1, 2018 UN1
221MPC code 221, 1 in MPEC 2018-W04 -- 46P
C53MPC code C53, 1 in MPEC 2018-W04 -- 46P
D74MPC code D74, 1 in MPEC 2018-W03 -- C/2018 V1
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2018-W01 -- 2013 UB3
423North Ryde Obs. in New South Wales, 1 in MPEC 2018-W04 -- 46P
Z80Northolt Branch Obs. in England, 1 in MPEC 2018-W02 -- 2018 QN1
C23Olmen Obs. in Belgium, 1 in MPEC 2018-W03 -- C/2018 V1
I41Palomar Transient Factory (PTF) in southern California, 3 in MPEC 2018-W02 -- 2018 VX, 250162, 171819
323Perth Obs. in Western Australia, 1 in MPEC 2018-W04 -- 46P
G39ROAD in Chile, 1 in MPEC 2018-W04 -- 46P
L04ROASTERR-1 in Romania, 1 in MPEC 2018-W03 -- C/2018 V1
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2018-W04 -- 46P
C95SATINO-1 in France, 1 in MPEC 2018-W02 -- 349507
Q11Shinshiro Obs., 2 in MPECs 2018-W03 & 2018-W04 -- C/2018 V1, 46P
G409B. Lutkenhoner in Germany via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2018-W03 -- C/2018 V1
W88#program code "#" (12) via Slooh.com Chile Obs. in Chile, 1 in MPEC 2018-W04 -- 46P
W883B. Lutkenhoner in Germany via Slooh.com Chile Obs. in Chile, 1 in MPEC 2018-W04 -- 46P
L06Sormano2 Obs. in Italy, 1 in MPEC 2018-W03 -- C/2018 V1
691Spacewatch 0.9m telescope in Arizona, 12 in MPEC 2018-W02 -- 2018 VX6, 2018 VQ3, 2018 VP9, 2018 VM7, 2018 VJ3, 2018 VG8, 2018 VD4, 2018 VA7, 2018 TS, 2018 LZ5, 2015 AP43, 2009 WL6
291Spacewatch 1.8m telescope in Arizona, 12 in MPEC 2018-W02 -- 2018 VZ8, 2018 VZ5, 2018 VX8, 2018 VX5, 2018 VL7, 2018 VA7, 2018 UG1, 2018 QT, 2018 LQ2, 2016 HV3, 2015 FF35, 2014 NE52
V78Spirit Marsh Obs. in Minnesota, 1 in MPEC 2018-W04 -- 46P
I52Steward Obs. Mt. Lemmon Station in Arizona, 35 in MPECs 2018-W01 & 2018-W02 -- 2018 VZ7, 2018 VY8, 2018 VY7, 2018 VX8, 2018 VW6, 2018 VW1, 2018 VU6, 2018 VT8, 2018 VT7, 2018 VS8, 2018 VS, 2018 VR4, 2018 VP7, 2018 VL8, 2018 VL1, 2018 VK6, 2018 VK1, 2018 VJ5, 2018 VH3, 2018 VG1, 2018 VF3, 2018 VD4, 2018 VC, 2018 VA8, 2018 UZ, 2018 UY, 2018 UN1, 2018 TY2, 2018 TX4, 2018 TG6, 2018 SN, 2018 RP8, 2018 PL9, 2018 KG1, 2013 UB3
Q23Sukagawa Obs., 1 in MPEC 2018-W04 -- 46P
I81Tarbatness Obs. in Scotland, 1 in MPEC 2018-W03 -- C/2018 V1
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 2 in MPECs 2018-W02 & 2018-W04 -- 2018 TJ6, 46P
L01Visnjan Obs., 1 in MPEC 2018-W01 -- 2013 UB3
367Yatsuka Obs. in Japan, 2 in MPECs 2018-W03 & 2018-W04 -- C/2018 V1, 46P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 16 November '18

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2359 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 VO9NEODyS17002084-2117486.66e-05-5.53-6.160NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2018-11-09.270 to 2018-11-15.207."
2018 VX8JPL Sentry17002060-210121.0064e-08-6.66-6.710JPL: Computed at 07:35 today Pacific time based on 37 observations spanning 5.8430 days (2018-Nov-10.43278 to 2018-Nov-16.27576). Diameter approximately 0.110 km. from weighted mean H=22.53.
NEODyS17002060-211892.78e-06-4.26-4.56-NEODyS: "Based on 27 optical observations (of which 0 are rejected as outliers) from 2018-11-10.434 to 2018-11-14.234."
2018 VL8JPL Sentry17002033-203312.175e-06-3.87-3.870JPL: Computed at 07:29 today Pacific time based on 30 observations spanning 5.9032 days (2018-Nov-10.20912 to 2018-Nov-16.11234). Diameter approximately 0.095 km. from weighted mean H=22.76.
NEODyS17002033-207221.91e-06-3.95-3.950NEODyS: "Based on 26 optical observations (of which 0 are rejected as outliers) from 2018-11-10.210 to 2018-11-15.272."
2018 VA8JPL Sentry17002099-2116272.97079291e-05-5.64-6.040JPL: Computed at 07:39 today Pacific time based on 34 observations spanning 4.0471 days (2018-Nov-12.28874 to 2018-Nov-16.33588). Diameter approximately 0.014 km. from weighted mean H=26.85.
NEODyS17002098-2118782.47e-05-5.77-6.29-NEODyS: "Based on 30 optical observations (of which 0 are rejected as outliers) from 2018-11-12.290 to 2018-11-15.275."
2018 VS6NEODyS17002083-2118442.09e-04-4.71-4.83-NEODyS: "Based on 73 optical observations (of which 0 are rejected as outliers) from 2018-11-09.545 to 2018-11-15.476."
2018 VP6NEODyS17002088-211842.07e-06-6.84-7.07-NEODyS: "Based on 27 optical observations (of which 1 are rejected as outliers) from 2018-11-10.279 to 2018-11-15.385."
2018 VO6NEODyS17002048-209767.16e-05-3.58-3.610NEODyS: "Based on 43 optical observations (of which 0 are rejected as outliers) from 2018-11-05.411 to 2018-11-15.280."
2018 VCJPL Sentry17002109-2118106.87158e-06-6.28-6.600JPL: Computed at 07:21 today Pacific time based on 126 observations spanning 15.054 days (2018-Nov-01.24873 to 2018-Nov-16.30252). Diameter approximately 0.018 km. from weighted mean H=26.32.
NEODyS17002108-2118184.84e-06-6.44-6.8-NEODyS: "Based on 123 optical observations (of which 0 are rejected as outliers) from 2018-11-01.250 to 2018-11-15.231."
2018 TJ6NEODyS1700211111.95e-10-9.31-9.310NEODyS: "Based on 55 optical observations (of which 0 are rejected as outliers) from 2018-10-15.516 to 2018-11-15.355."

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 16 November '18

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

2300Grabbed MPEC 2018-W04 - Comet 46P/Wirtanen - see above
2205Grabbed MPEC 2018-W03 - Comet C/2018 V1 (Machholz-Fujikawa-Iwamoto) - see above
2054Generated Traffic Report
1700Noted that NEODyS has updated its 2018 TJ6 risk assessment - see above
Noted that JPL Sentry has updated its 2018 VA8 risk assessment - see above
Noted that NEODyS has updated its 2018 VA8 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 JPL Sentry has updated its 2018 VL8 risk assessment - see above
Noted that NEODyS has updated its 2018 VL8 risk assessment - see above
Noted that NEODyS has updated its 2018 VO6 risk assessment - see above
Noted that NEODyS has posted 2018 VO9 as an impact risk - see above
Noted that NEODyS has updated its 2018 VP6 risk assessment - see above
Noted that NEODyS has updated its 2018 VS6 risk assessment - see above
Noted that JPL Sentry has updated its 2018 VX8 risk assessment - see above
Noted that NEODyS has posted 2018 VX8 as an impact risk - see above
Grabbed MPEC 2018-W02 - Daily Orbit Update - see above
0319Grabbed MPEC 2018-W01 - 2013 UB3 - see above