Contents  on 17 February '12

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 February '12

No objects reported inside ten LD

No objects are reported traveling inside ten lunar distances (LD) of Earth today. Approaching our neighborhood, radar target 2011 CP4 arrives inside ten LD on February 22nd and 2008 EJ85 comes inside on March 4th.

This report was posted at 1606 UTC with follow-up in today's DOU MPEC for 2011 CP4.


Notes: Ten LD has no astronomical significance but is a useful reporting boundary. Distances are interpreted by A/CC from JPL Horizons data. See also today's timeline plus current additional details, sky chart, and ephemerides.

NEOCP Activity  on 17 February '12

The MPC's NEO Confirmation Page has 26 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 26 objects listed. Of these, sixteen were "one nighters." So far The Tracking News has counted a total of 31 listings on the NEOCP today.

New MPECs  on 17 February '12

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.


<< OOC on 17 Feb. '12 >> MPEC 2012-D09 - "18:06 UT" - Observations and Orbits of Comets


MPEC 2012-D08 - "17:03 UT" - 2012 CR36


MPEC 2012-D07 - "17:00 UT" - 2012 CQ36


<< DOU on 17 Feb. '12 >>  MPEC 2012-D06 - "06:03 UT" - Daily Orbit Update

Observers  on 17 February '12

A total of 72 observers appear in today's MPECs.

CodeObserver / observatory
J97Alginet Obs. in Spain, 10 in MPECs 2012-D06 & 2012-D09 -- C/2012 C2, 2011 WV134, C/2011 F1, C/2009 P1, 21088, 209924, 4183, 1627, 78P, 49P
H21Astronomical Research Obs. Westfield in Illinois, 2 in MPECs 2012-D07 & 2012-D08 -- 2012 CR36, 2012 CQ36
J51Atlante Obs. in the Canary Islands, 2 in MPEC 2012-D09 -- P/2011 W2, 49P
I47Auger Obs. in Argentina, 3 in MPEC 2012-D09 -- C/2012 C1, C/2011 L4, C/2009 F4
B75Betelgeuse Station in Italy, 3 in MPEC 2012-D09 -- C/2011 F1, 246P, 49P
300Bisei Spaceguard Center in Japan, 1 in MPEC 2012-D06 -- 2012 AU10
C86Blanes Obs. in Spain, 1 in MPEC 2012-D09 -- 78P
B96Brixiis Obs. in Belgium, 15 in MPEC 2012-D09 -- P/2012 B1, C/2012 A2, P/2011 W2, C/2011 G1, C/2011 F1, P/2010 JC81, C/2010 G2, C/2009 P1, 246P, 244P, 242P, 164P, 78P, 49P, 29P
235CAST Obs. in Italy, 5 in MPEC 2012-D09 -- C/2012 C2, C/2010 G2, C/2009 P1, 164P, 78P
B66Casasco Obs. in Italy, 3 in MPEC 2012-D09 -- C/2012 C2, C/2010 S1, 244P
703Catalina Sky Survey in Arizona, 1 in MPEC 2012-D09 -- P/2012 B1
693Catalina Station in Arizona, 1 in MPEC 2012-D09 -- C/2012 C2
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 2 in MPEC 2012-D06 -- 2012 BM86, 2011 QF14
J01Cielo Profundo Obs. in Spain, 11 in MPEC 2012-D09 -- C/2012 C2, C/2012 B3, P/2012 B1, C/2012 A2, P/2011 W2, C/2011 F1, P/2010 JC81, C/2009 P1, 123P, 49P, 29P
829Complejo Astronomico El Leoncito in Argentina, 1 in MPEC 2012-D09 -- 78P
850Cordell-Lorenz Obs. in Tennessee, 3 in MPEC 2012-D09 -- C/2009 P1, 164P, 49P
821Cordoba Obs. Bosque Alegre Station in Argentina, 1 in MPEC 2012-D06 -- 2012 BM86
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2012-D09 -- 49P
958Dax Obs. in France, 26 in MPEC 2012-D09 -- C/2012 CH17, C/2012 C2, P/2012 B1, C/2012 A2, P/2011 W2, P/2011 W1, C/2011 J2, C/2011 G1, C/2011 F1, C/2010 S1, C/2010 R1, P/2010 JC81, C/2010 G2, C/2010 FB87, C/2009 P1, C/2008 S3, 246P, 244P, 242P, 213P, 164P, 123P, 78P, 49P, 29P, 21P
448Desert Moon Obs. in New Mexico, 6 in MPEC 2012-D06 -- 2012 CT, 2012 BC20, 2012 BB124, 2011 WV134, 2009 QE8, 162186
J19El Maestrat Obs. in Spain, 1 in MPEC 2012-D09 -- 49P
F65%Tim Lister in southern California via Faulkes Telescope North in Hawaii, 1 in MPEC 2012-D08 -- 2012 CR36
372Geisei Obs. in Japan, 4 in MPEC 2012-D09 -- C/2012 B3, C/2012 A2, C/2012 A1, C/2009 P1
203GiaGa Obs. in Italy, 4 in MPECs 2012-D06 & 2012-D09 -- 2012 BJ134, 2012 BC124, 2012 BB124, C/2011 G1
J95Great Shefford Obs. in England, 3 in MPECs 2012-D06 & 2012-D09 -- 2012 CP36, 2012 CA21, C/2012 C2
511Haute Provence Obs. in Germany, 1 in MPEC 2012-D09 -- C/2012 CH17
D88Hiratsuka Obs. in Japan, 2 in MPEC 2012-D09 -- C/2012 A2, 164P
C32Ka-Dar Obs. TAU Station in Russia, 15 in MPECs 2012-D06 & 2012-D09 -- C/2012 CH17, 2012 BJ134, C/2012 B3, P/2012 B1, C/2012 A2, C/2012 A1, P/2011 W2, C/2011 UF305, P/2011 R3, C/2011 Q4, P/2010 UH55, P/2010 JC81, C/2005 L3, 223P, 164P
585Kiev Comet Station in the Ukraine, 4 in MPEC 2012-D09 -- P/2011 W2, C/2011 G1, C/2010 G2, 29P
695{Tomas Vorobjov in England via Kitt Peak Natl. Obs. in Arizona, 1 in MPEC 2012-D06 -- 2012 AE1
D95Kurihara Obs. in Japan, 8 in MPEC 2012-D09 -- C/2012 C2, C/2012 A2, C/2010 S1, C/2010 G2, C/2009 P1, C/2008 FK75, 78P, 29P
704LINEAR in New Mexico, 9 in MPECs 2012-D06 & 2012-D09 -- C/2012 B3, 2008 GE1, 313548, 312942, 162186, 154330, 10145, 7358, 3200
J38La Vara Obs. in Spain, 3 in MPEC 2012-D09 -- C/2010 G2, 164P, 78P
083MPC code 083, 1 in MPEC 2012-D06 -- 433
I72MPC code I72, 1 in MPEC 2012-D09 -- C/2009 P1
5682David Tholen's team on Mauna Kea in Hawaii, 2 in MPECs 2012-D07 & 2012-D09 -- 2012 CQ36, C/2011 L4
118Modra Obs. in Slovakia, 4 in MPEC 2012-D09 -- C/2012 B3, C/2012 A2, P/2010 JC81, C/2009 P1
213Montcabre Obs. in Spain, 11 in MPEC 2012-D09 -- C/2012 CH17, C/2012 C2, C/2012 B3, P/2012 B1, P/2011 W2, C/2011 L4, C/2011 F1, C/2009 P1, 164P, 49P, 29P
C91Montevenere Obs., 4 in MPECs 2012-D06 & 2012-D09 -- 163000, 3103, 1620, 78P
900Moriyama Obs. in Japan, 5 in MPEC 2012-D09 -- P/2012 B1, P/2011 W2, P/2010 JC81, 246P, 49P
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2012-D09 -- 60P
D81Nagano Obs. in Japan, 2 in MPEC 2012-D09 -- 78P, 21P
A24New Millennium Obs. in Italy, 14 in MPEC 2012-D06 -- 2011 WV134, 32906, 294739, 29075, 24475, 209924, 163696, 143651, 137805, 7358, 1866, 1627, 1620, 1036
C23Olmen Obs. in Belgium, 11 in MPEC 2012-D09 -- P/2012 B1, P/2011 W2, C/2011 G1, C/2010 S1, C/2010 G2, C/2009 P1, C/2008 FK75, 244P, 164P, 78P, 21P
D92Osaki Obs. in Japan, 1 in MPEC 2012-D09 -- C/2012 C2
F51Pan-STARRS 1 (PS1) in Hawaii, 10 in MPECs 2012-D06, 2012-D07, 2012-D08 & 2012-D09 -- 2012 CR36, 2012 CQ36, 2012 CL29, 2011 PS, C/2011 F1, 2008 BX2, 2002 DJ5, 96631, 172722, 47P
H23Pear Tree Obs. in Florida, 2 in MPEC 2012-D09 -- P/2010 JC81, 49P
H45Petit Jean Mtn. South Obs. in Arkansas, 1 in MPEC 2012-D09 -- C/2010 G2
5611Janos Kelemen via Piszkesteto Station in Hungary, 11 in MPEC 2012-D09 -- P/2012 B1, C/2012 A2, C/2012 A1, P/2011 W2, P/2011 W1, P/2011 UA134, C/2011 Q4, C/2011 J2, C/2011 G1, C/2011 F1, P/2010 JC81
H06%Ernesto Guido in Italy via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2012-D09 -- C/2009 P1
H06?program code "?" via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2012-D09 -- C/2012 CH17
H06|Hidetaka Sato in Japan via RAS Obs. Mayhill in New Mexico, 4 in MPEC 2012-D09 -- C/2012 B3, P/2011 VJ5, C/2010 G2, P/2003 T12
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 3 in MPEC 2012-D09 -- 244P, 242P, 117P
071Rhozen Obs. in Bulgaria, 4 in MPEC 2012-D09 -- C/2010 S1, C/2010 G2, 213P, 78P
939Rodeno Obs. in Spain, 6 in MPEC 2012-D09 -- C/2011 F1, C/2010 G2, C/2009 P1, 246P, 78P, 49P
H36Sandlot Obs. in Kansas, 1 in MPEC 2012-D06 -- 2010 SV3
C71Sant Marti Sesgueioles Obs. in Spain, 2 in MPEC 2012-D09 -- C/2011 G1, 244P
B56Sant Pere Obs. in Spain, 2 in MPEC 2012-D09 -- C/2011 F1, C/2009 P1
B74Santa Maria de Montmagastrell Obs. in Spain, 1 in MPEC 2012-D09 -- C/2010 G2
204Schiaparelli Obs. in Italy, 3 in MPEC 2012-D09 -- C/2011 L4, P/2010 JC81, 21P
D93Sendai Obs. in Japan, 6 in MPEC 2012-D09 -- C/2012 C2, C/2012 A2, C/2010 G2, C/2009 P1, 78P, 49P
E12Siding Spring Survey in New South Wales, 1 in MPEC 2012-D06 -- 2011 CP4
510Siegen Obs. in Germany, 1 in MPEC 2012-D09 -- 78P
G68Sierra Stars Obs. in northern California, 1 in MPEC 2012-D09 -- C/2009 P1
A71Stixendorf Obs. in Austria, 5 in MPEC 2012-D09 -- C/2012 C2, C/2009 P1, P/2003 T12, 78P, 21P
I40TRAPPIST in Chile, 14 in MPEC 2012-D09 -- P/2011 W2, C/2011 R1, C/2011 L4, C/2011 L2, C/2010 G2, C/2009 F4, 246P, 244P, 164P, 103P, 78P, 49P, 29P, 27P
B18Terskol Obs. in Russia, 1 in MPEC 2012-D09 -- P/2010 TO20
B51Vallauris Obs. in France, 6 in MPEC 2012-D09 -- C/2012 CH17, P/2012 B1, C/2012 A2, 164P, 49P, 29P
A48Verona Obs. in Italy, 2 in MPEC 2012-D06 -- 2011 SL102, 2006 AL8
H47Vicksburg Obs. in Mississippi, 11 in MPEC 2012-D09 -- P/2011 W2, C/2011 J2, C/2010 G2, C/2010 FB87, C/2009 P1, 246P, 164P, 117P, 78P, 49P, 29P
B42Vitebsk Obs. in Belarus, 8 in MPEC 2012-D09 -- P/2012 B1, C/2012 A1, P/2011 W2, P/2011 W1, C/2011 G1, C/2010 G2, 244P, 78P
C42Xingming Obs. in China, 1 in MPEC 2012-D09 -- C/2012 C2
367Yatsuka Obs. in Japan, 5 in MPEC 2012-D09 -- C/2010 S1, C/2010 G2, P/2003 T12, 78P, 21P
J08Zonalunar Obs. in Spain, 5 in MPEC 2012-D09 -- C/2011 F1, C/2009 P1, 164P, 78P, 49P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 17 February '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 CA21JPL Sentry16042043-210166.5e-06-2.11-2.470JPL: "Analysis based on 36 observations spanning 4.7841 days (2012-Feb-12.12022 to 2012-Feb-16.90435)." Diameter approximately 0.528 km. from mean, weighted H=19.0.
NEODyS16042043-207836.28e-06-2.10-2.480NEODyS: "Based on 36 optical observations (of which 2 are rejected as outliers) from 2012-02-12.121 to 2012-02-16.905."

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 February '12

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

1817Grabbed MPEC 2012-D09 - Observations and Orbits of Comets - see above
1708Grabbed MPEC 2012-D07 - 2012 CQ36 - see above
Grabbed MPEC 2012-D08 - 2012 CR36 - see above
1606Posted Traffic Report
1604Noted that JPL Sentry has updated its 2012 CA21 risk assessment - see above
Noted that NEODyS has updated its 2012 CA21 risk assessment - see above
Grabbed MPEC 2012-D06 - Daily Orbit Update - see above