Contents  on 8 November '13

Asteroid/Comet Connection (A/CC) Resources:

The latest A/CC news is available via framed access, RSS news feed RSS news feed, or redirection. - Note: A/CC has a main Web site and also a backup site with its own duplicate RSS news feed.

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. And use the all-up news archive to access news from any time since A/CC began in early 2002. To keep track of what's new each day, watch the Chronology section.

Traffic Report  on 8 November '13

Five objects reported inside ten LD

There are five objects reported flying within ten lunar distances (LD) of Earth today. Radar target 2001 AV43 is inbound from 9.07 to 8.35 LD while 2013 UE1 is outbound from 7.43 to 7.70 LD and 2013 VH2 from 8.54 to 8.90 LD. 2013 VG2 leaves ten LD, passing from 9.03 to 11.81 LD, and newly announced 2013 VN5 also exits, traveling from 9.10 to 11.32 LD.

Coming around next, 2011 JY1 arrives inside ten LD on November 11th and radar target 2013 NJ arrives on November 19th.

This report was updated at 1931 UTC with new discovery 2013 VN5 (MPEC). This report was previously updated at 1659 UTC with first follow-up in today's DOU MPEC for departed, now risk-listed 2013 UJ5 (adding 2.21 days to its 2.95-day discovery arc) and additional observation of 2013 VL5 from within its discovery arc. Today's first traffic report was generated at 0034 UTC with the discoveries announced late yesterday of already departed objects 2013 VL5 (MPEC) and risk-listed 2013 VM5 (MPEC).

Comment:  MPEC 2013-V44 below equates a perhaps eight-kilometer-wide Jupiter Trojan, 2010 HS10, with an object currently on JPL's Earth impact risk list -- 2013 VF2, estimated by JPL at a respectable but considerably smaller 180 meters in diameter. The copyrighted MPEC notes misattributed observations and concludes that "2013 VF2 is not a NEA." As of 1930 UTC, JPL has not yet removed the risk listing.



Notes: Ten times the distance to the Moon (ten LD) has no astronomical significance but is a useful reporting boundary. Object distances are interpreted by A/CC from JPL Horizons data. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

Radar Astrometry  on 8 November '13

Radar observation of one object

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:


Data update noted at 2357 UTC when the database was dated 8 Nov.

NEOCP Activity  on 8 November '13

The MPC's NEO Confirmation Page has 20 listings

When last checked at 2357 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 20 objects listed. Of these, eight were "one nighters." So far The Tracking News has counted a total of 40 listings on the NEOCP today.

New MPECs  on 8 November '13

Minor Planet Electronic Circulars

As of last check at 2357 UTC, there have been six MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2013-V47 - "20:28 UT" - 2008 YV148


MPEC 2013-V46 - "17:23 UT" - 2013 VN5


MPEC 2013-V45 - "14:26 UT" - Comet C/2013 V3 (Nevski)


MPEC 2013-V44 - "14:12 UT" - 2010 HS10 = 2011 OD39 = 2013 VF2


MPEC 2013-V43 - "13:57 UT" - Comet C/2013 V2 (Borisov)


<< DOU on 8 Nov. '13 >>  MPEC 2013-V42 - "06:05 UT" - Daily Orbit Update

Observers  on 8 November '13

A total of 56 observers appear in today's MPECs.

CodeObserver / observatory
251Arecibo in Puerto Rico, 1 in radar -- 6063
H21Astronomical Research Obs. Westfield in Illinois, 13 in MPECs 2013-V42, 2013-V43, 2013-V45 & 2013-V47 -- 2013 VZ4, 2013 VN5, C/2013 V3, C/2013 V2, 2013 UR3, 2013 TV135, 2013 TL117, 2013 TB80, 2013 SC25, 2013 SB21, 2008 YV148, 85938, 357028
Z95Astronomy for All Remote Obs., 1 in MPEC 2013-V43 -- C/2013 V2
I47Auger Obs. in Argentina, 1 in MPEC 2013-V45 -- C/2013 V3
C77Bernezzo Obs. in Italy, 1 in MPEC 2013-V43 -- C/2013 V2
B75Betelgeuse Station in Italy, 1 in MPEC 2013-V43 -- C/2013 V2
I58Betera Obs., 2 in MPECs 2013-V43 & 2013-V45 -- C/2013 V3, C/2013 V2
300Bisei Spaceguard Center in Japan, 2 in MPEC 2013-V42 -- 2013 VO5, 2013 VK5
Q68Blue Mountains Obs. in New South Wales, 1 in MPEC 2013-V45 -- C/2013 V3
235CAST Obs. in Italy, 1 in MPEC 2013-V43 -- C/2013 V2
U82CS3 Palmer Divide Station in southern California, 15 in MPEC 2013-V42 -- 2013 VJ2, 2013 UH9, 2013 UH5, 2013 TE6, 2013 SC25, 2013 RM43, 2013 RH74, 2006 HU30, 65733, 251346, 17511, 162566, 142781, 10115, 6063
703Catalina Sky Survey (CSS) in Arizona, 6 in MPEC 2013-V42 -- 2013 UH9, 2013 UG9, 2008 HO3, 375505, 351278, 8014
470Ceccano Obs. in Italy, 1 in MPEC 2013-V43 -- C/2013 V2
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 13 in MPEC 2013-V42 -- 2013 VX4, 2013 VQ4, 2013 VN5, 2013 VM4, 2013 VK, 2013 UP8, 2013 QH48, 2011 QD48, 2011 CQ4, 2007 TC66, 2005 XJ8, 302169, 262623
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2013-V43 -- C/2013 V2
0954program code 4 via Crimean Astrophysical Obs. in the Ukraine, 1 in MPEC 2013-V43 -- C/2013 V2
958Dax Obs. in France, 2 in MPECs 2013-V43 & 2013-V45 -- C/2013 V3, C/2013 V2
448Desert Moon Obs. in New Mexico, 4 in MPEC 2013-V42 -- 2013 UB1, 2013 TV144, 2013 TS4, 349074
I57Elche Obs., 1 in MPEC 2013-V43 -- C/2013 V2
Z81Estrella de Mar Obs., 2 in MPEC 2013-V42 -- 2013 VM2, 2008 TQ2
734Farpoint Obs. in Kansas, 1 in MPEC 2013-V42 -- 2013 US3
C73Galati Obs. in Romania, 1 in MPEC 2013-V45 -- C/2013 V3
J95Great Shefford Obs. in England, 2 in MPECs 2013-V42 & 2013-V46 -- 2013 VO5, 2013 VN5
D00ISON-Kislovodsk Obs., 2 in MPECs 2013-V43 & 2013-V45 -- C/2013 V3, C/2013 V2
H15ISON-NM Obs. in New Mexico, 4 in MPECs 2013-V42, 2013-V43 & 2013-V45 -- C/2013 V3, C/2013 V2, 1998 YB8, 5863
I36Los Campitos Obs. in Argentina, 1 in MPEC 2013-V45 -- C/2013 V3
C94MASTER-II Obs. Tunka in Russia, 1 in MPEC 2013-V42 -- 162566
H01Magdalena Ridge Obs. (MRO) in New Mexico, 5 in MPECs 2013-V42, 2013-V43 & 2013-V45 -- 2013 VZ4, 2013 VP4, 2013 VN5, C/2013 V3, C/2013 V2
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2013-V42 -- 2013 UJ5
568;program code ";" on Mauna Kea in Hawaii, 1 in MPEC 2013-V42 -- 86039
B67Mirasteilas Obs. in Switzerland, 4 in MPEC 2013-V42 -- 2013 TE6, 2013 SK19, 52760, 163249
900Moriyama Obs. in Japan, 2 in MPECs 2013-V43 & 2013-V45 -- C/2013 V3, C/2013 V2
G96Mt. Lemmon Survey (MLS) in Arizona, 9 in MPECs 2013-V42 & 2013-V44 -- 2013 VF2, 2013 UF3, 2013 UC3, 2013 TV144, 2013 TS135, 2003 ND, 2000 HW23, 243147, 162186
A24New Millennium Obs. in Italy, 1 in MPEC 2013-V43 -- C/2013 V2
J43Oukaimeden Obs. in Morocco, 2 in MPECs 2013-V42 & 2013-V44 -- 2013 VF2, 2013 TS4
I41Palomar Transient Factory in southern California, 1 in MPEC 2013-V42 -- 142781
F51Pan-STARRS 1 (PS1) in Hawaii, 2 in MPEC 2013-V42 -- 2013 VN5, 2013 VL5
B49Paus Obs. in Spain, 1 in MPEC 2013-V43 -- C/2013 V2
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 11 in MPEC 2013-V42 -- 2013 VM2, 2013 VJ2, 2013 UH9, 2013 TV135, 2013 TH5, 2013 TE6, 2013 SK19, 2013 RM43, 2013 PV6, 2006 HU30, 2003 WX25
D29Purple Mtn. Obs. Xuyi Station in China, 6 in MPEC 2013-V42 -- 2013 ON5, 351545, 351278, 243147, 168378, 3691
L04ROASTERR-1 Obs., 1 in MPEC 2013-V42 -- 2013 TV135
J41Raheny Obs. in Ireland, 1 in MPEC 2013-V43 -- C/2013 V2
C95SATINO-1 in France, 1 in MPEC 2013-V43 -- C/2013 V2
Y00SONEAR Obs. in Brazil, 1 in MPEC 2013-V42 -- 2013 TE6
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2013-V45 -- C/2013 V3
104San Marcello Pistoiese Obs. in Italy, 2 in MPECs 2013-V42 & 2013-V43 -- 2013 VN5, C/2013 V2
H36Sandlot Obs. in Kansas, 3 in MPECs 2013-V42 & 2013-V45 -- 2013 VO4, 2013 VN5, C/2013 V3
204Schiaparelli Obs. in Italy, 1 in MPEC 2013-V43 -- C/2013 V2
G404Don Cranford, Jr. in North Carolina via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2013-V42 -- 2013 UR3
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2013-V42 -- 2013 TV144
291Spacewatch 1.8m telescope in Arizona, 5 in MPECs 2013-V42 & 2013-V46 -- 2013 VN5, 2013 US3, 2013 TJ135, 2013 SW24, 2013 RJ74
926Tenagra II Obs. in Arizona, 3 in MPECs 2013-V42 & 2013-V46 -- 2013 VN5, 2013 UR5, 2013 UG10
I42Westport Obs. in Massachusetts, 1 in MPEC 2013-V42 -- 2013 TL117
367Yatsuka Obs. in Japan, 1 in MPEC 2013-V45 -- C/2013 V3
J08Zonalunar Obs. in Spain, 2 in MPECs 2013-V43 & 2013-V45 -- C/2013 V3, C/2013 V2
H06iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-V45 -- C/2013 V3
H06%Ernesto Guido in Italy via iTelescope Obs. Mayhill in New Mexico, 2 in MPECs 2013-V43 & 2013-V45 -- C/2013 V3, C/2013 V2
H06*Rolando Ligustri in Italy via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-V45 -- C/2013 V3
H06.Cristovao Jacques in Brazil via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-V45 -- C/2013 V3
H06=program code "=" via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-V43 -- C/2013 V2
H06`Erik Bryssinck in Belgium via iTelescope Obs. Mayhill in New Mexico, 2 in MPECs 2013-V43 & 2013-V45 -- C/2013 V3, C/2013 V2
I892program code 2 via iTelescope Obs. Nerpio in Spain, 1 in MPEC 2013-V43 -- C/2013 V2
I896program code 6 via iTelescope Obs. Nerpio in Spain, 2 in MPECs 2013-V43 & 2013-V45 -- C/2013 V3, C/2013 V2
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 8 November '13

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2357 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 is 100 years from today and for NEODyS is usually the year 2090. Both also post impact solutions beyond 100 years for a few special objects.
For the latest official risk assessments, and for explanations of the terminology, see the JPL NEO Program 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
2013 VM5NEODyS16512022-210453.6e-06-4.73-4.740NEODyS: "Based on 12 optical observations (of which 1 are rejected as outliers) from 2013-11-04.436 to 2013-11-07.380."
JPL Sentry00192022-210483.1e-06-4.74-4.750JPL: "Analysis based on 11 observations spanning 2.9441 days (2013-Nov-04.4356 to 2013-Nov-07.379662)." Diameter approximately 0.032 km. from mean, weighted H=25.1.
2013 VZ4JPL Sentry16512063-210999.7e-06-4.29-4.650JPL: "Analysis based on 16 observations spanning 2.9824 days (2013-Nov-04.43691 to 2013-Nov-07.419315)." Diameter approximately 0.081 km. from mean, weighted H=23.1.
NEODyS16512063-209579.15e-06-4.34-4.710NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2013-11-04.438 to 2013-11-07.420."
2013 UJ5JPL Sentry1651206111.2e-07-8.37-8.370JPL: "Analysis based on 19 observations spanning 5.1624 days (2013-Oct-24.32564 to 2013-Oct-29.488068)." Diameter approximately 0.009 km. from mean, weighted H=28.0.
NEODyS16512061-206111.15e-07-8.39-8.390NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2013-10-24.326 to 2013-10-29.489."
2013 TV135JPL Sentry1651R E M O V E DJPL: Risk listing removed at 1308 UTC.
NEODyS1651R E M O V E D-

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale

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 8 November '13

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

2357Noted Radar Astrometry database update - see above
2054Grabbed MPEC 2013-V47 - 2008 YV148 - see above
1931Updated Traffic Report
1805Grabbed MPEC 2013-V46 - 2013 VN5 - see above
1651Noted that JPL Sentry has removed 2013 TV135 as an impact risk - see above
Noted that NEODyS has removed 2013 TV135 as an impact risk - see above
Noted that JPL Sentry has posted 2013 UJ5 as an impact risk - see above
Noted that NEODyS has posted 2013 UJ5 as an impact risk - see above
Noted that NEODyS has posted 2013 VM5 as an impact risk - see above
Noted that JPL Sentry has updated its 2013 VZ4 risk assessment - see above
Noted that NEODyS has updated its 2013 VZ4 risk assessment - see above
Grabbed MPEC 2013-V42 - Daily Orbit Update - see above
Grabbed MPEC 2013-V43 - Comet C/2013 V2 (Borisov) - see above
Grabbed MPEC 2013-V44 - 2010 HS10 = 2011 OD39 = 2013 VF2 - see above
Grabbed MPEC 2013-V45 - Comet C/2013 V3 (Nevski) - see above
0019Noted that JPL Sentry has posted 2013 VM5 as an impact risk - see above