Contents  on 17 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 17 November '18

Fourteen objects reported inside ten LD

Bulletin - 2336, updated 2357 UTC:  Two new discoveries of close passers have been announced.

Earth passageI D~Size~Inside ten LDNotes
0.52 LD at 2039 UTC Nov. 142018 VJ106 m Nov. 11 - 18intruder - MPEC
4.39 LD at 1113 UTC tomorrow2018 VH1032 m Nov. 15 - 22MPEC


Fourteen small visitors are reported within ten lunar distances (LD) of our planet today. The nearest, 2018 VS8, comes its closest to Earth this time around, reaching 1.95 LD, inside Earth's sphere of gravitational influence.

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  3.87 to 4.81 LD Nov. 2 - 23 intruder, NHATS target, risk
0.99 LD Nov. 10 2018 VX1 11 m  8.37 to 9.70 LD Nov. 3 - 18 intruder, NHATS target
1.95 LD today 2018 VS8 13 m  1.95 LD Nov. 12 - 21 Earth closest at 0450 UTC
3.13 LD Nov. 11 2018 VA4 8 m  9.04 to 10.62 LD Nov. 6 - 17 NHATS target, exits ten LD
3.50 LD Nov. 12 2018 VU8 9 m  6.35 to 7.39 LD Nov. 4 - 20 NHATS target
3.61 LD Nov. 14 2018 VX5 25 m  6.36 to 7.96 LD Nov. 9 - 19
3.92 LD Dec. 2 2018 TG6 12 m  5.60 from 5.79 LD Oct. 30 - Jan. 5 NHATS target, risk - DOU
4.11 LD Nov. 14 2018 VO3 14 m  6.46 to 7.86 LD Nov. 8 - 19 NHATS target
4.4   LD Nov. 11* 2018 WA 14 m  9.5 to 11.0 LD Nov. 6 - 17 NEW, EPU +/- 12 mins.*, NHATS target, exits ten LD - MPEC
5.14 LD Nov. 13 2008 WS62 31 m  9.04 to 10.75 LD Nov. 8 - 17 NEW, NHATS target, exits ten LD - MPEC, DOU
5.93 LD Nov. 11 2018 VH5 12 m  9.66 to 10.73 LD Nov. 5 - 17 NHATS target, exits ten LD
6.42 LD Nov. 13 2018 VU7 13 m  9.04 to 10.62 LD Nov. 10 - 17 exits ten LD
7.63 LD Nov. 20 2018 VP7 15 m  8.18 from 8.72 LD Nov. 15 - 25 NHATS target
8.21 LD Nov. 25 2018 VT7 9 m  9.18 from 9.44 LD Nov. 15 - Dec. 7 NHATS target
* EPU = Earth passage uncertainty

This report was generated at 1915 UTC with the discoveries of outbound 2018 WA (MPEC) and already departed 2018 VB10 (MPEC), which flew by us at 7.67 LD on November 9th, and with the recovery of outbound 2008 WS62 (MPEC, DOU). Today's DOU MPEC has follow-up for inbound risk-listed 2018 TG6, for departed 2018 VL3 and 2018 UQ1, for departed risk-listed objects 2018 VA8, 2018 VS6, and 2018 VC, and, from 2016, for risk-listed intruder 2016 SA2 (adding 3.04 days to its previous 9.95-day observation arc).

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  20.1 from 22.1 LD Nov. 23 - 30 EPU +/- 2.04 days*
2.6   LD Dec. 15* 2018 VO9 15 m  16.7 from 17.2 LD Nov. 29 - Dec. 31 EPU +/- 1.28 hours*, NHATS target, risk
4.1   LD Dec. 9* 2013 VX4 62 m  31.7 from 33.1 LD Dec. 3 - 15 EPU +/- 2.35 days*
7.36 LD Dec. 22 163899 2003 SD220 1.17 km  45.19 from 46.33 LD Dec. 17 - 26 NHATS target
7.3   LD Jan. 9* 2013 YM2 19 m  49.7 from 50.5 LD Jan. 2 - 16 EPU +/- 1.25 days*, NHATS target



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 17 November '18

The MPC's NEO Confirmation Page has 51 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 51 objects listed. Of these, 39 were "one nighters." So far The Tracking News has counted a total of 69 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 17 November '18

Minor Planet Electronic Circulars

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


MPEC 2018-W15 - "23:24 UT" - 2018 VJ10


MPEC 2018-W14 - "23:20 UT" - 2018 WC


MPEC 2018-W13 - "23:14 UT" - 2018 WB


MPEC 2018-W12 - "23:11 UT" - 2018 VH10


MPEC 2018-W11 - "23:06 UT" - 2018 VG10


<< DOU on 17 Nov. '18 >>  MPEC 2018-W10 - "13:33 UT" - Daily Orbit Update


MPEC 2018-W09 - "03:58 UT" - 2018 WA


MPEC 2018-W08 - "03:55 UT" - 2018 VB10


MPEC 2018-W07 - "03:52 UT" - 2018 VA10


MPEC 2018-W06 - "03:49 UT" - 2018 VZ9


MPEC 2018-W05 - "03:42 UT" - 2008 WS62

Observers  on 17 November '18

A total of 39 observers appear in today's MPECs.

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 1 in MPEC 2018-W12 -- 2018 VH10
H21Astronomical Research Obs. Westfield in Illinois, 5 in MPECs 2018-W06, 2018-W07, 2018-W08, 2018-W11 & 2018-W14 -- 2018 WC, 2018 VZ9, 2018 VG10, 2018 VB10, 2018 VA10
T05ATLAS Haleakala in Hawaii, 1 in MPEC 2018-W10 -- 2018 VT8
T08ATLAS Mauna Loa in Hawaii, 1 in MPEC 2018-W05 -- 2008 WS62
160Castelmartini Obs. in Italy, 6 in MPEC 2018-W10 -- 86324, 523824, 17274, 16834, 154656, 3691
703Catalina Sky Survey (CSS) in Arizona, 3 in MPECs 2018-W08, 2018-W09 & 2018-W12 -- 2018 WA, 2018 VH10, 2018 VB10
850Cordell-Lorenz Obs. in Tennessee, 2 in MPECs 2018-W05 & 2018-W14 -- 2018 WC, 2008 WS62
W84%program code "%" (14) via DECam in Chile, 1 in MPEC 2018-W10 -- 2016 SA2
113Drebach Obs. in Germany, 1 in MPEC 2018-W14 -- 2018 WC
734Farpoint Obs. in Kansas, 3 in MPECs 2018-W07, 2018-W10 & 2018-W14 -- 2018 WC, 2018 VA10, 2018 LW5
X31Galilei Obs., 1 in MPEC 2018-W08 -- 2018 VB10
K88GINOP-KHK in Hungary, 3 in MPECs 2018-W05, 2018-W08 & 2018-W14 -- 2018 WC, 2018 VB10, 2008 WS62
E94Gisborne Obs. in New Zealand, 2 in MPECs 2018-W11 & 2018-W12 -- 2018 VH10, 2018 VG10
A17Guidestar Obs. in Germany, 2 in MPECs 2018-W05 & 2018-W08 -- 2018 VB10, 2008 WS62
246KLENOT in the Czech Republic, 1 in MPEC 2018-W14 -- 2018 WC
H01Magdalena Ridge Obs. (MRO) in New Mexico, 6 in MPECs 2018-W07, 2018-W08, 2018-W09, 2018-W11, 2018-W12 & 2018-W13 -- 2018 WB, 2018 WA, 2018 VH10, 2018 VG10, 2018 VB10, 2018 VA10
568^R. Wainscoat on Mauna Kea in Hawaii, 1 in MPEC 2018-W07 -- 2018 VA10
G96Mt. Lemmon Survey (MLS) in Arizona, 4 in MPECs 2018-W10, 2018-W11, 2018-W12 & 2018-W13 -- 2018 WB, 2018 VH10, 2018 VG10, 2011 UA
2684program code 4 via New Horizons KBO Search, Magellan Clay Telescope (NHKS-MCT) in Chile, 4 in MPEC 2018-W10 -- 53319, 194268, 15817, 141079
C47Nonndorf Obs. in Austria, 1 in MPEC 2018-W08 -- 2018 VB10
C23Olmen Obs. in Belgium, 1 in MPEC 2018-W10 -- 65733
I41Palomar Transient Factory (PTF) in southern California, 4 in MPECs 2018-W05, 2018-W06, 2018-W14 & 2018-W15 -- 2018 WC, 2018 VZ9, 2018 VJ10, 2008 WS62
F52Pan-STARRS 2 (PS2) in Hawaii, 5 in MPECs 2018-W07 & 2018-W10 -- 2018 VA10, 65706, 523821, 523803, 162149
K63Pascoli Obs. in Italy, 2 in MPECs 2018-W05 & 2018-W14 -- 2018 WC, 2008 WS62
L04ROASTERR-1 in Romania, 3 in MPECs 2018-W05, 2018-W08 & 2018-W14 -- 2018 WC, 2018 VB10, 2008 WS62
247roving observer, 1 in MPEC 2018-W14 -- 2018 WC
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2018-W08 -- 2018 VB10
H36Sandlot Obs. in Kansas, 1 in MPEC 2018-W06 -- 2018 VZ9
C95SATINO-1 in France, 1 in MPEC 2018-W10 -- 363027
204Schiaparelli Obs. in Italy, 4 in MPEC 2018-W10 -- 2018 UJ1, 2018 TC3, 2010 AK, 69230
033Schwarzschild Obs. in Germany, 4 in MPECs 2018-W06, 2018-W07, 2018-W08 & 2018-W11 -- 2018 VZ9, 2018 VG10, 2018 VB10, 2018 VA10
587Sormano Obs. in Italy, 1 in MPEC 2018-W14 -- 2018 WC
691Spacewatch 0.9m telescope in Arizona, 12 in MPECs 2018-W07, 2018-W10 & 2018-W11 -- 2018 VX6, 2018 VV1, 2018 VN5, 2018 VG10, 2018 VF3, 2018 VB1, 2018 VA10, 2018 TS, 2018 SB1, 2018 NR, 2004 VB17, 523815
291Spacewatch 1.8m telescope in Arizona, 12 in MPEC 2018-W10 -- 2018 VX8, 2018 VX4, 2018 VS6, 2018 VS, 2018 VL8, 2018 VL3, 2018 UY, 2018 UM1, 2018 UC1, 2018 TO6, 2018 TG6, 2018 TG5
I52Steward Obs. Mt. Lemmon Station in Arizona, 28 in MPECs 2018-W06, 2018-W07, 2018-W08, 2018-W09, 2018-W10, 2018-W11, 2018-W12, 2018-W13 & 2018-W15 -- 2018 WB, 2018 WA, 2018 VZ9, 2018 VZ1, 2018 VY8, 2018 VX8, 2018 VX, 2018 VT8, 2018 VR9, 2018 VQ8, 2018 VQ6, 2018 VP8, 2018 VO6, 2018 VN3, 2018 VL8, 2018 VJ10, 2018 VH10, 2018 VG3, 2018 VG10, 2018 VB4, 2018 VB10, 2018 VA9, 2018 VA10, 2018 UQ1, 2018 SB1, 2018 RP8, 2016 OP5, 2008 WS62
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 8 in MPEC 2018-W10 -- 2018 VS6, 2018 VQ8, 2018 VL8, 2018 VC, 2018 VA8, 2018 UM1, 2018 TG6, 2018 RR7
L01Visnjan Obs., 8 in MPECs 2018-W05, 2018-W07, 2018-W08, 2018-W09, 2018-W11, 2018-W13, 2018-W14 & 2018-W15 -- 2018 WC, 2018 WB, 2018 WA, 2018 VJ10, 2018 VG10, 2018 VB10, 2018 VA10, 2008 WS62
198Wildberg Obs. in Germany, 1 in MPEC 2018-W05 -- 2008 WS62
C51WISE in Earth polar orbit, 1 in MPEC 2018-W10 -- 85774
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 17 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 VZ9NEODyS16002072-211894.74e-08-3.97-4.31-NEODyS: "Based on 24 optical observations (of which 0 are rejected as outliers) from 2018-11-07.443 to 2018-11-16.415."
JPL Sentry05342026-2118161.045739e-07-3.55-4.290JPL: Computed at 21:28 Nov. 16th Pacific time based on 24 observations spanning 8.9719 days (2018-Nov-07.44256 to 2018-Nov-16.41446). Diameter approximately 0.899 km. from weighted mean H=17.89.
2018 VX8JPL Sentry16302060-210124.1023e-09-7.05-7.110JPL: Computed at 08:04 today Pacific time based on 44 observations spanning 6.9674 days (2018-Nov-10.43278 to 2018-Nov-17.40022). Diameter approximately 0.110 km. from weighted mean H=22.50.
2018 VL8JPL Sentry16002033-203313.131e-09-6.73-6.730JPL: Computed at 07:55 today Pacific time based on 39 observations spanning 6.9467 days (2018-Nov-10.20912 to 2018-Nov-17.15583). Diameter approximately 0.094 km. from weighted mean H=22.78.
NEODyS16002033-207221.8e-06-3.97-3.970NEODyS: "Based on 30 optical observations (of which 0 are rejected as outliers) from 2018-11-10.210 to 2018-11-16.113."
2018 VA8JPL Sentry16302099-2116233.4900559e-05-5.57-5.940JPL: Computed at 08:06 today Pacific time based on 35 observations spanning 4.0471 days (2018-Nov-12.28874 to 2018-Nov-16.33588). Diameter approximately 0.014 km. from weighted mean H=26.87.
NEODyS16002098-2116782.49e-05-5.75-6.210NEODyS: "Based on 34 optical observations (of which 0 are rejected as outliers) from 2018-11-12.290 to 2018-11-16.337."
2018 VS6JPL Sentry16302083-2118157.523081e-05-5.16-5.310JPL: Computed at 08:06 today Pacific time based on 77 observations spanning 7.8981 days (2018-Nov-09.544497 to 2018-Nov-17.44264). Diameter approximately 0.014 km. from weighted mean H=26.87.
2018 VO6JPL Sentry16002048-205946.51456e-05-3.59-3.600JPL: Computed at 07:48 today Pacific time based on 47 observations spanning 11.833 days (2018-Nov-05.410654 to 2018-Nov-17.24398). Diameter approximately 0.048 km. from weighted mean H=24.26.
2018 VCJPL Sentry16002109-211897.8188e-06-6.22-6.520JPL: Computed at 07:47 today Pacific time based on 128 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.
NEODyS16002108-2118174.76e-06-6.45-6.8-NEODyS: "Based on 126 optical observations (of which 0 are rejected as outliers) from 2018-11-01.250 to 2018-11-16.303."
2018 TJ6NEODyS1600R E M O V E D-
2018 TG6NEODyS1600211116.98e-09-9.77-9.770NEODyS: "Based on 113 optical observations (of which 1 are rejected as outliers) from 2018-10-15.453 to 2018-11-16.158."
2016 SA2JPL Sentry16002110-2116120.0001365792239-5.84-6.210JPL: Computed at 07:39 today Pacific time based on 62 observations spanning 12.997 days (2016-Sep-26.27345 to 2016-Oct-09.26998). Diameter approximately 0.008 km. from weighted mean H=28.12.
2009 VZ39JPL Sentry05342019-21169087.056414e-06-6.25-7.780JPL: 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.
2008 VS4JPL Sentry05342018-21143136.03958e-07-5.45-6.320JPL: Computed at 00:23 April 8th of 2017 Pacific time based on 10 observations spanning .08330 days (2008-Nov-07.413 to 2008-Nov-07.4963). Diameter approximately 0.049 km. from weighted mean H=24.22.

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 17 November '18

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

2330Grabbed MPEC 2018-W11 - 2018 VG10 - see above
Grabbed MPEC 2018-W12 - 2018 VH10 - see above
Grabbed MPEC 2018-W13 - 2018 WB - see above
Grabbed MPEC 2018-W14 - 2018 WC - see above
Grabbed MPEC 2018-W15 - 2018 VJ10 - see above
1915Generated Traffic Report
1630Noted that JPL Sentry has updated its 2018 VA8 risk assessment - see above
Noted that JPL Sentry has updated its 2018 VS6 risk assessment - see above
Noted that JPL Sentry has updated its 2018 VX8 risk assessment - see above
1600Noted that JPL Sentry has updated its 2016 SA2 risk assessment - see above
Noted that NEODyS has updated its 2018 TG6 risk assessment - see above
Noted that NEODyS has removed 2018 TJ6 as an impact risk - 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 JPL Sentry has updated its 2018 VO6 risk assessment - see above
Noted that NEODyS has posted 2018 VZ9 as an impact risk - see above
Grabbed MPEC 2018-W10 - Daily Orbit Update - see above
0534Noted that JPL Sentry has updated its 2008 VS4 risk assessment - see above
Noted that JPL Sentry has updated its 2009 VZ39 risk assessment - see above
Noted that JPL Sentry has posted 2018 VZ9 as an impact risk - see above
0432Grabbed MPEC 2018-W05 - 2008 WS62 - see above
Grabbed MPEC 2018-W06 - 2018 VZ9 - see above
Grabbed MPEC 2018-W07 - 2018 VA10 - see above
Grabbed MPEC 2018-W08 - 2018 VB10 - see above
Grabbed MPEC 2018-W09 - 2018 WA - see above