Contents  on 19 November '12

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 19 November '12

Eight objects reported inside ten LD

There are eight objects reported to be within ten lunar distances (LD) of Earth today. 2012 VN76 is calculated with some uncertainty to be inbound from 7.5 to 7.3 LD and all the others are outbound: risk-listed intruder 2012 VJ38 from 5.12 to 6.13 LD, risk-listed 2012 VE77 from 5.60 to 8.08 LD, risk-listed 2012 VS76 from 6.43 to 8.84 LD, risk-listed 2012 VU76 from 8.53 to 8.99 LD, 2012 VC26 from 8.74 to 9.90 LD, 2012 UY68 from 9.00 to 9.85 LD, and 2012 UV136 exits ten LD, traveling from 9.99 to 10.77 LD.

Next up, returning radar target 2010 JK1 arrives inside ten LD on November 22nd.

This report was generated at 1601 UTC with follow-up in today's DOU MPEC for departed intruder 2012 VH77.


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.

NEOCP Activity  on 19 November '12

The MPC's NEO Confirmation Page has 8 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had eight objects listed. Of these, four were "one nighters." So far The Tracking News has counted a total of nine 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 19 November '12

Minor Planet Electronic Circulars

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


MPEC 2012-W21 - "16:13 UT" - 2012 VV93


MPEC 2012-W20 - "14:33 UT" - 2012 BX85


<< DOU on 19 Nov. '12 >>  MPEC 2012-W19 - "06:05 UT" - Daily Orbit Update

Observers  on 19 November '12

A total of 21 observers appear in today's MPECs.

CodeObserver / observatory
169Airali Obs. in Italy, 1 in MPEC 2012-W19 -- 6455
H21Astronomical Research Obs. Westfield in Illinois, 14 in MPECs 2012-W19 & 2012-W21 -- 2012 VV93, 2012 VP76, 2012 VM82, 2012 VK82, 2012 VJ77, 2012 VH77, 2012 VH46, 2012 VF82, 2012 VE37, 2012 TJ146, 2012 TF146, 2007 SV11, 2006 GZ, 2005 TE15
B88Bigmuskie Obs. in Italy, 2 in MPEC 2012-W19 -- 2012 US136, 2012 QF49
726Brainerd Obs. in Minnesota, 1 in MPEC 2012-W19 -- 333358
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 9 in MPEC 2012-W19 -- 2012 VH6, 2012 VD77, 2012 UW136, 2012 UB34, 2012 QJ45, 1998 KG3, 237442, 159635, 6569
850Cordell-Lorenz Obs. in Tennessee, 2 in MPEC 2012-W19 -- 2012 VP76, 2012 VE37
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2012-W19 -- 162142
G48Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) in New Mexico, 2 in MPEC 2012-W19 -- 2012 VP76, 2012 VK76
J95Great Shefford Obs. in England, 2 in MPECs 2012-W19 & 2012-W21 -- 2012 VV93, 2012 VO76
B86Hagen Obs. in Germany, 1 in MPEC 2012-W19 -- 2012 VF82
246KLENOT in the Czech Republic, 4 in MPEC 2012-W19 -- 2012 WH, 2012 VO76, 2012 VJ82, 2000 WL63
046Klet Obs. in the Czech Republic, 3 in MPEC 2012-W19 -- 2012 JR17, 2008 HV4, 138852
474Mt. John Obs. in New Zealand, 11 in MPEC 2012-W19 -- 2012 VG46, 2012 VE5, 2012 VD77, 2012 UB69, 2012 UB34, 2012 TZ52, 2012 TS, 2012 TH79, 2012 RG3, 2009 SC15, 2005 SH26
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2012-W21 -- 2012 VV93
A13Naef Obs. in Switzerland, 1 in MPEC 2012-W19 -- 329338
C23Olmen Obs. in Belgium, 1 in MPEC 2012-W19 -- 2012 VJ82
F51Pan-STARRS 1 (PS1) in Hawaii, 2 in MPEC 2012-W19 -- 335758, 218863
H36Sandlot Obs. in Kansas, 1 in MPEC 2012-W21 -- 2012 VV93
G40Slooh.com Canary Islands Obs. in the Canary Islands, 3 in MPEC 2012-W19 -- 1998 VE31, 162004, 137052
291Spacewatch 1.8m telescope in Arizona, 5 in MPECs 2012-W19 & 2012-W21 -- 2012 VV93, 2012 VL6, 2012 VK6, 2012 VA5, 2012 TS78
2905Richard P. Boyle via Vatican Advanced Technology Telescope in Arizona, 1 in MPEC 2012-W20 -- 2012 BX85
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 19 November '12

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL 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 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
2012 VO76JPL Sentry1559207813.4e-10-7.44-7.440JPL: "Analysis based on 43 observations spanning 5.6225 days (2012-Nov-13.23964 to 2012-Nov-18.86209)." Diameter approximately 0.220 km. from mean, weighted H=21.0.
NEODyS1559R E M O V E D-
2012 VK6JPL Sentry1559R E M O V E DJPL: Risk listing removed at 0951 UTC.
NEODyS1559R 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 19 November '12

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

1701Grabbed MPEC 2012-W21 - 2012 VV93 - see above
1601Generated Traffic Report
1559Noted that JPL Sentry has removed 2012 VK6 as an impact risk - see above
Noted that NEODyS has removed 2012 VK6 as an impact risk - see above
Noted that JPL Sentry has updated its 2012 VO76 risk assessment - see above
Noted that NEODyS has removed 2012 VO76 as an impact risk - see above
Grabbed MPEC 2012-W19 - Daily Orbit Update - see above
Grabbed MPEC 2012-W20 - 2012 BX85 - see above