Contents  on 17 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 17 November '12

Nine objects reported inside ten LD

There are nine objects reported within ten lunar distances (LD) of our planet today. Risk-listed 2012 VS76 exits Earth's Hill sphere, traveling from 2.57 to 4.19 LD, as does risk-listed intruder 2012 VJ38, moving from 3.09 to 4.10 LD.

Further away, 2012 VB26 is calculated to come its closest to Earth on this passage, coming to 9.7 LD at 1306 UTC (uncertainty: +/- 2.9167 hours). Risk-listed 2012 VE77 is inbound from 5.65 to 4.50 LD and 2012 VN76 from 8.9 to 8.0 LD*. And all the others are outbound: 2012 VC26 from 6.47 to 7.59 LD, 2012 UY68 from 7.60 to 8.24 LD, risk-listed 2012 VU76 from 8.09 to 8.22 LD, and 2012 UV136 from 8.52 to 9.24 LD.

Headed our way next, radar target 2010 JK1 arrives inside ten LD on November 22nd.

This report was generated at 1533 UTC with today's DOU MPEC with first follow-up for 2012 VE77 and observation of 2012 VU76, 2012 VS76, and departed risk-listed 2012 VV76.


Notes: Ten times the distance to the Moon (ten LD) has no astronomical significance but is a useful reporting boundary. Earth's Hill sphere (of gravitational influence) is estimated to extend out to around 3.89 LD. Object distances are interpreted by A/CC from JPL Horizons data. "LD*" indicates some passage uncertainty. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

NEOCP Activity  on 17 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, three were "one nighters." The Tracking News counted a total of 25 listings on the NEOCP on this day.

New MPECs  on 17 November '12

Minor Planet Electronic Circulars

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


MPEC 2012-W11 - "18:05 UT" - 2012 VM82


<< DOU on 17 Nov. '12 >>  MPEC 2012-W10 - "06:05 UT" - Daily Orbit Update


MPEC 2012-W09 - "02:46 UT" - 2012 VK82


MPEC 2012-W08 - "02:43 UT" - 2012 VJ82

Observers  on 17 November '12

A total of 27 observers appeared in this day's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 10 in MPECs 2012-W08, 2012-W09, 2012-W10 & 2012-W11 -- 2012 VV76, 2012 VP76, 2012 VO76, 2012 VM82, 2012 VK82, 2012 VJ82, 2012 VJ77, 2012 VF46, 2012 MB7, 2000 QJ130
B88Bigmuskie Obs. in Italy, 1 in MPEC 2012-W10 -- 2012 US136
300Bisei Spaceguard Center in Japan, 1 in MPEC 2012-W08 -- 2012 VJ82
703Catalina Sky Survey (CSS) in Arizona, 2 in MPECs 2012-W09 & 2012-W11 -- 2012 VM82, 2012 VK82
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 10 in MPECs 2012-W09, 2012-W10 & 2012-W11 -- 2012 VM82, 2012 VK82, 2012 VG46, 2012 VD77, 2012 VC5, 2012 SD22, 2012 KK18, 2002 XZ38, 331509, 313809
G48Doc Greiner Research Obs. Rancho Hildalgo in New Mexico, 1 in MPEC 2012-W08 -- 2012 VJ82
113Drebach Obs. in Germany, 1 in MPEC 2012-W08 -- 2012 VJ82
595Farra d'Isonzo Obs. in Italy, 2 in MPECs 2012-W08 & 2012-W09 -- 2012 VK82, 2012 VJ82
J95Great Shefford Obs. in England, 2 in MPECs 2012-W08 & 2012-W09 -- 2012 VK82, 2012 VJ82
B86Hagen Obs. in Germany, 1 in MPEC 2012-W08 -- 2012 VJ82
C43Hoyerswerda Obs. in Germany, 1 in MPEC 2012-W08 -- 2012 VJ82
246KLENOT in the Czech Republic, 6 in MPECs 2012-W09, 2012-W10 & 2012-W11 -- 2012 VM82, 2012 VK82, 2012 VK76, 2012 VF46, 2012 VE77, 2004 TL19
046Klet Obs. in the Czech Republic, 6 in MPEC 2012-W10 -- 2012 VZ25, 2012 TJ146, 2012 TA79, 2012 TA219, 2012 SA59, 2012 QB17
704LINEAR in New Mexico, 4 in MPEC 2012-W10 -- 99907, 6455, 5836, 1620
950.Ovidiu Vaduvescu via La Palma in the Canary Islands, 2 in MPEC 2012-W10 -- 4486, 4450
809|EURONEAR via La Silla in Chile, 1 in MPEC 2012-W10 -- 7482
5682David Tholen's team on Mauna Kea in Hawaii, 5 in MPEC 2012-W10 -- 2012 VU76, 2012 VS76, 2012 VO76, 2012 VK6, 2012 TO139
B67Mirasteilas Obs. in Switzerland, 1 in MPEC 2012-W10 -- 2012 TA79
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPECs 2012-W09 & 2012-W11 -- 2012 VM82, 2012 VK82
F51Pan-STARRS 1 in Hawaii, 1 in MPEC 2012-W10 -- 2012 SB22
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2012-W08 -- 2012 VJ82
H36Sandlot Obs. in Kansas, 3 in MPECs 2012-W08, 2012-W09 & 2012-W11 -- 2012 VM82, 2012 VK82, 2012 VJ82
204Schiaparelli Obs. in Italy, 1 in MPEC 2012-W09 -- 2012 VK82
291Spacewatch 1.8m telescope in Arizona, 8 in MPECs 2012-W09 & 2012-W10 -- 2012 VO6, 2012 VL6, 2012 VK82, 2012 VE46, 2012 VC82, 2012 UU136, 2012 TY52, 2012 TV78
I93St. Pardon de Conques Obs. in France, 1 in MPEC 2012-W08 -- 2012 VJ82
926Tenagra II Obs. in Arizona, 1 in MPEC 2012-W08 -- 2012 VJ82
C51WISE in Earth polar orbit, 1 in MPEC 2012-W10 -- 341843
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 17 November '12

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2105 UTC, JPL unavailable)
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 VE77JPL Sentry15302033-203521.3e-05-5.02-5.030JPL: "Analysis based on 24 observations spanning 2.6205 days (2012-Nov-14.17815 to 2012-Nov-16.79867)." Diameter approximately 0.019 km. from mean, weighted H=26.3.
NEODyS15302033-204423.35e-05-4.60-4.60NEODyS: "Based on 26 optical observations (of which 2 are rejected as outliers) from 2012-11-14.178 to 2012-11-16.799."
2012 VV76JPL Sentry15302074-209433.0e-07-6.87-7.200JPL: "Analysis based on 20 observations spanning 2.8594 days (2012-Nov-13.43413 to 2012-Nov-16.29358)." Diameter approximately 0.027 km. from mean, weighted H=25.5.
NEODyS15302074-209443.56e-07-6.80-7.170NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2012-11-13.435 to 2012-11-16.294."
2012 VU76JPL Sentry15302074-210939.0e-06-5.88-5.890JPL: "Analysis based on 28 observations spanning 3.0840 days (2012-Nov-13.43639 to 2012-Nov-16.520346)." Diameter approximately 0.024 km. from mean, weighted H=25.7.
NEODyS15302095-210025.66e-08-8.03-8.310NEODyS: "Based on 28 optical observations (of which 0 are rejected as outliers) from 2012-11-13.437 to 2012-11-16.521."
2012 VS76JPL Sentry15302080-2107103.3e-05-5.55-5.640JPL: "Analysis based on 57 observations spanning 2.9316 days (2012-Nov-13.36169 to 2012-Nov-16.293249)." Diameter approximately 0.014 km. from mean, weighted H=26.9.
NEODyS15302081-209261.26e-05-5.98-6.210NEODyS: "Based on 61 optical observations (of which 4 are rejected as outliers) from 2012-11-13.362 to 2012-11-16.294."
2012 VO76JPL Sentry15302064-207831.6e-07-4.75-4.840JPL: "Analysis based on 31 observations spanning 3.1405 days (2012-Nov-13.23964 to 2012-Nov-16.380152)." Diameter approximately 0.220 km. from mean, weighted H=21.0.
NEODyS15302064-207831.56e-07-4.76-4.830NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2012-11-13.240 to 2012-11-16.381."
2012 VK6JPL Sentry15302059-2095111.1e-07-4.93-5.490JPL: "Analysis based on 13 observations spanning 12.048 days (2012-Nov-04.220655 to 2012-Nov-16.268961)." Diameter approximately 0.220 km. from mean, weighted H=20.9.
NEODyS15302074-207418.41e-10-6.55-6.550NEODyS: "Based on 13 optical observations (of which 0 are rejected as outliers) from 2012-11-04.221 to 2012-11-16.270."
2012 TO139NEODyS1530R 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 17 November '12

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

1901Grabbed MPEC 2012-W11 - 2012 VM82 - see above
1533Generated Traffic Report
1530Noted that NEODyS has removed 2012 TO139 as an impact risk - see above
Noted that JPL Sentry has updated its 2012 VE77 risk assessment - see above
Noted that NEODyS has updated its 2012 VE77 risk assessment - see above
Noted that JPL Sentry has updated its 2012 VK6 risk assessment - see above
Noted that NEODyS has updated its 2012 VK6 risk assessment - see above
Noted that JPL Sentry has updated its 2012 VO76 risk assessment - see above
Noted that NEODyS has updated its 2012 VO76 risk assessment - see above
Noted that JPL Sentry has updated its 2012 VS76 risk assessment - see above
Noted that NEODyS has updated its 2012 VS76 risk assessment - see above
Noted that JPL Sentry has updated its 2012 VU76 risk assessment - see above
Noted that NEODyS has updated its 2012 VU76 risk assessment - see above
Noted that JPL Sentry has updated its 2012 VV76 risk assessment - see above
Noted that NEODyS has updated its 2012 VV76 risk assessment - see above
Grabbed MPEC 2012-W10 - Daily Orbit Update - see above
0606Grabbed MPEC 2012-W08 - 2012 VJ82 - see above
Grabbed MPEC 2012-W09 - 2012 VK82 - see above