Contents  on 23 March '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 23 March '12

Three objects reported inside ten LD

Three asteroids are reported to be within ten lunar distances (LD) of Earth today. 2012 EO8 is outbound from 5.10 to 7.36 LD, risk-listed 2012 EK5 from 6.47 to 8.58 LD, and 2012 EL8 from 8.7 to 9.1 LD*.

Coming our way next, intruder 2012 EG5 (risk-listed radar target) arrives inside ten LD on March 27th and returning 2007 HV4 comes inside on April 14th.

This report was posted at 1559 UTC with follow-up in today's DOU MPEC for 2012 FM, 2012 EP10, 2012 EO8, and 2012 EG5, as well as November observation of 308635 2005 YU55.


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. "LD*" indicates some passage uncertainty. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

NEOCP Activity  on 23 March '12

The MPC's NEO Confirmation Page has 30 listings

When last checked at 2338 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 30 objects listed. Of these, thirteen were "one nighters." So far The Tracking News has counted a total of 34 listings on the NEOCP today.

New MPECs  on 23 March '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 23 Mar. '12 >> MPEC 2012-F59 - "19:11 UT" - Observations and Orbits of Comets


MPEC 2012-F58 - "18:21 UT" - 2012 FK15


MPEC 2012-F57 - "18:18 UT" - 2012 FJ15


<< DOU on 23 Mar. '12 >>  MPEC 2012-F56 - "06:03 UT" - Daily Orbit Update

Observers  on 23 March '12

A total of 76 observers appear in today's MPECs.

CodeObserver / observatory
J51Atlante Obs. in the Canary Islands, 1 in MPEC 2012-F59 -- C/2009 P1
I47Auger Obs. in Argentina, 5 in MPEC 2012-F59 -- C/2011 J2, C/2009 F4, 246P, 49P, 29P
A74Bergen-Enkheim Obs. in Germany, 1 in MPEC 2012-F56 -- 2012 EL5
621Bergisch Gladbach Obs. in Germany, 1 in MPEC 2012-F59 -- P/2011 C2
I32Beta Orionis Obs. in Argentina, 1 in MPEC 2012-F59 -- C/2009 F4
B75Betelgeuse Station in Italy, 3 in MPEC 2012-F59 -- C/2012 CH17, C/2011 J2, C/2011 F1
I72Carpe-Noctem Obs., 4 in MPEC 2012-F59 -- C/2011 F1, C/2009 P1, 78P, 49P
160Castelmartini Obs. in Italy, 10 in MPEC 2012-F59 -- C/2012 CH17, C/2012 A2, C/2011 F1, P/2010 JC81, C/2009 P1, 246P, 244P, 164P, 78P, 49P
703Catalina Sky Survey (CSS) in Arizona, 9 in MPECs 2012-F56 & 2012-F59 -- C/2012 E1, 2012 DZ32, 2012 DV32, 2012 DN14, 2012 AA11, P/2011 VJ5, P/2011 C2, 2000 DK8, 49P
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 3 in MPEC 2012-F56 -- 2012 FR1, 2012 FM, 2012 FJ
A77Chante-Perdrix Obs. in France, 1 in MPEC 2012-F59 -- C/2011 F1
J01Cielo Profundo Obs. in Spain, 5 in MPEC 2012-F59 -- C/2011 J2, C/2006 S3, 164P, 91P, 49P
106Crni Vrh Obs. in Slovenia, 4 in MPECs 2012-F56 & 2012-F59 -- C/2012 B3, 189008, 4055, 164P
958Dax Obs. in France, 18 in MPEC 2012-F59 -- C/2012 CH17, C/2012 A2, P/2011 W2, C/2011 J2, C/2011 F1, C/2010 S1, C/2010 R1, P/2010 JC81, C/2010 G2, C/2010 FB87, C/2006 S3, 246P, 244P, 164P, 78P, 49P, 29P, 21P
448Desert Moon Obs. in New Mexico, 7 in MPEC 2012-F56 -- 2012 FJ, 2012 EL5, 2012 DF61, 2004 FG11, 294739, 162186, 9400
G48Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) in New Mexico, 4 in MPEC 2012-F56 -- 2012 EL5, 2012 EK8, 2012 AA11, 141018
113Drebach Obs. in Germany, 2 in MPEC 2012-F56 -- 2012 DX75, 2012 DU30
J19El Maestrat Obs. in Spain, 1 in MPEC 2012-F59 -- C/2012 CH17
F65%Tim Lister in southern California via Faulkes Telescope North in Hawaii, 1 in MPEC 2012-F56 -- 2012 FA14
157Frasso Sabino Obs. in Italy, 1 in MPEC 2012-F59 -- C/2012 CH17
C73Galati Obs. in Romania, 2 in MPECs 2012-F56 & 2012-F59 -- 2012 DX75, C/2009 P1
372Geisei Obs. in Japan, 5 in MPEC 2012-F59 -- C/2012 F3, P/2012 F2, C/2012 E3, C/2012 A2, C/2011 L4
B83Gieres Obs. in France, 4 in MPEC 2012-F59 -- C/2009 P1, 246P, 49P, 29P
458Guadarrama Obs. in Spain, 1 in MPEC 2012-F59 -- 49P
511Haute Provence Obs. in Germany, 4 in MPEC 2012-F59 -- C/2012 CH17, C/2012 BJ98, 117P, 49P
B15Inastars Obs. in Germany, 1 in MPEC 2012-F56 -- 2012 EG5
D00ISON-Kislovodsk Obs., 1 in MPEC 2012-F59 -- 49P
246KLENOT in the Czech Republic, 11 in MPECs 2012-F56 & 2012-F59 -- 2012 FM, 2012 EO5, 2012 EL5, 2012 EB2, C/2012 E3, P/2012 B1, C/2011 J2, 2004 FG11, 1994 NK, 246P, 29P
C32Ka-Dar Obs. TAU Station in Russia, 13 in MPEC 2012-F59 -- C/2012 E3, C/2012 BJ98, P/2011 W2, P/2011 W1, C/2011 UF305, C/2011 G1, P/2010 UH55, C/2006 S3, C/2005 L3, 240P, 228P, 152P, 60P
046Klet Obs. in the Czech Republic, 1 in MPEC 2012-F59 -- C/2009 P1
168Kourovskaya Obs. in Russia, 13 in MPEC 2012-F56 -- 32906, 263976, 21088, 162186, 153951, 141018, 137925, 6455, 4183, 3352, 3103, 1866, 1627
D95Kurihara Obs. in Japan, 12 in MPEC 2012-F59 -- C/2012 CH17, C/2012 A2, C/2011 J2, C/2010 S1, P/2010 JC81, C/2010 FB87, C/2009 P1, 246P, 117P, 78P, 60P, 49P
704LINEAR in New Mexico, 12 in MPECs 2012-F56 & 2012-F59 -- 2012 FM, 2012 EK8, C/2010 R1, 1994 NK, 40263, 312942, 302830, 21277, 138524, 4055, 244P, 29P
J38La Vara Obs. in Spain, 8 in MPEC 2012-F59 -- C/2011 F1, C/2009 P1, 246P, 164P, 117P, 78P, 49P, 29P
130Lumezzane Obs. in Italy, 5 in MPEC 2012-F59 -- C/2012 CH17, C/2012 BJ98, C/2012 A2, C/2011 J2, P/2011 C2
H01Magdalena Ridge Obs. (MRO) in New Mexico, 2 in MPECs 2012-F57 & 2012-F58 -- 2012 FK15, 2012 FJ15
B82Maidbronn Obs. in Germany, 3 in MPEC 2012-F59 -- C/2012 BJ98, P/2012 B1, C/2012 A1
C10Maisoncelles Obs. in France, 15 in MPEC 2012-F59 -- C/2012 E1, C/2012 CH17, C/2012 BJ98, P/2012 B1, C/2012 A2, C/2011 L4, C/2011 J2, C/2011 F1, P/2010 JC81, C/2009 P1, P/2005 JY126, 164P, 123P, 49P, 29P
118Modra Obs. in Slovakia, 3 in MPECs 2012-F57 & 2012-F59 -- 2012 FJ15, C/2012 BJ98, P/2011 W1
213Montcabre Obs. in Spain, 3 in MPEC 2012-F59 -- C/2012 E3, C/2012 B3, P/2012 B1
945Monte Deva Obs. in Spain, 5 in MPEC 2012-F59 -- C/2011 F1, C/2009 P1, 78P, 49P, 29P
900Moriyama Obs. in Japan, 17 in MPEC 2012-F59 -- C/2012 CH17, C/2012 B3, P/2012 B1, C/2012 A2, C/2011 J2, C/2011 F1, C/2010 R1, P/2010 JC81, C/2010 G2, C/2009 P1, 246P, 244P, 164P, 117P, 78P, 49P, 29P
G96Mt. Lemmon Survey (MLS) in Arizona, 21 in MPECs 2012-F56, 2012-F57, 2012-F58 & 2012-F59 -- 2012 FR1, 2012 FQ1, 2012 FK15, 2012 FJ15, 2012 ES10, 2012 ER14, 2012 EC, 2012 DE61, 2012 BK77, P/2011 W1, P/2011 C2, 2004 DD, 53319, 284114, 212359, 154330, 101955, 7025, 1943, 1862, 47P
E07Murrumbateman Obs. in New South Wales, 5 in MPEC 2012-F59 -- P/2012 F2, C/2012 F1, C/2012 E3, C/2012 CH17, C/2012 C1
A13Naef Obs. in Switzerland, 2 in MPEC 2012-F59 -- P/2011 C2, 246P
I89Nerpio Obs. in Italy, 1 in MPEC 2012-F59 -- C/2012 F1
A24New Millennium Obs. in Italy, 33 in MPEC 2012-F56 -- 2012 CA55, 2012 BJ134, 2012 AA11, 2011 SL102, 2002 EM6, 89959, 85839, 32906, 312942, 29075, 275558, 24475, 238063, 21088, 163000, 162186, 155336, 154269, 143651, 141018, 138359, 138013, 137925, 136618, 6050, 5620, 5587, 4055, 3103, 1917, 1862, 1627, 1620
0892program code 2 via Nikolaev Obs. in the Ukraine, 36 in MPECs 2012-F56 & 2012-F59 -- 2012 EO8, 2012 EK8, 2012 DX75, 2012 DH4, 2012 BJ134, 2012 AA11, 2011 WA, C/2011 UF305, 2011 SR69, 2011 SL102, C/2011 F1, C/2010 S1, C/2010 G2, 2005 XM4, 2005 UJ159, 2004 JO2, 2001 YE4, 96315, 85818, 53430, 37336, 317643, 308635, 24475, 175706, 170502, 154302, 141018, 138852, 138524, 137671, 10145, 1866, 246P, 78P, 49P
C47Nonndorf Obs. in Austria, 6 in MPEC 2012-F59 -- C/2012 A2, C/2011 F1, C/2009 P1, 246P, 49P, 29P
583Odessa-Mayaki Obs. in the Ukraine, 1 in MPEC 2012-F59 -- 29P
C23Olmen Obs. in Belgium, 17 in MPEC 2012-F59 -- C/2012 CH17, C/2012 B3, P/2012 B1, C/2012 A2, C/2011 UF305, C/2011 J2, C/2011 F1, C/2010 S1, P/2010 JC81, C/2009 P1, 246P, 244P, 164P, 117P, 78P, 49P, 29P
F51Pan-STARRS 1 (PS1) in Hawaii, 6 in MPECs 2012-F56 & 2012-F59 -- 2012 CM29, 2012 CL29, P/2010 UH55, 246P, 117P, 29P
A53Peschiera del Garda Obs. in Italy, 2 in MPEC 2012-F56 -- 2012 AA11, 2011 SL102
H06`E. Bryssinck via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2012-F59 -- C/2009 P1
H06|Hidetaka Sato in Japan via RAS Obs. Mayhill in New Mexico, 4 in MPEC 2012-F59 -- C/2012 F3, P/2012 F2, C/2012 E3, 60P
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 9 in MPEC 2012-F59 -- C/2012 C1, C/2011 O1, C/2011 A3, C/2010 G2, C/2009 F4, 246P, 242P, 117P, 29P
939Rodeno Obs. in Spain, 7 in MPEC 2012-F59 -- C/2011 J2, C/2011 F1, C/2009 P1, 246P, 78P, 49P, 29P
461SZTE Asteroid Program in Hungary, 2 in MPEC 2012-F59 -- C/2010 R1, C/2009 P1
B70Sant Celoni Obs. in Spain, 1 in MPEC 2012-F59 -- C/2011 F1
C71Sant Marti Sesgueioles Obs. in Spain, 3 in MPEC 2012-F59 -- 246P, 244P, 91P
204Schiaparelli Obs. in Italy, 8 in MPECs 2012-F56, 2012-F57 & 2012-F59 -- 2012 FM, 2012 FJ15, 2012 FJ, 2012 ES14, 2012 EK8, 2012 EG5, C/2011 J2, C/2009 P1
510Siegen Obs. in Germany, 2 in MPEC 2012-F59 -- C/2011 F1, C/2009 P1
G68Sierra Stars Obs. in northern California, 1 in MPEC 2012-F59 -- C/2009 P1
291Spacewatch 1.8m telescope in Arizona, 9 in MPECs 2012-F56 & 2012-F57 -- 2012 FR1, 2012 FQ1, 2012 FJ15, 2012 EY11, 2012 ES10, 2012 EP10, 2012 EC, 2012 DJ61, 2004 MD
A71Stixendorf Obs. in Austria, 6 in MPEC 2012-F59 -- C/2011 J2, P/2011 C2, C/2009 P1, 246P, 117P, 78P
6734Mike Hicks via Table Mtn. Obs. in southern California, 1 in MPEC 2012-F56 -- 2012 EG5
I81Tarbatness Obs. in Scotland, 7 in MPEC 2012-F59 -- C/2012 CH17, C/2012 A2, C/2011 UF305, C/2011 F1, C/2010 S1, 246P, 49P
A98Taurus-1 Obs. in Belarus, 4 in MPEC 2012-F59 -- C/2012 A2, C/2011 F1, C/2009 P1, 49P
C35Terrassa Obs., 2 in MPEC 2012-F59 -- C/2011 F1, C/2009 P1
B51Vallauris Obs. in France, 1 in MPEC 2012-F59 -- C/2011 UF305
A48Verona Obs. in Italy, 2 in MPEC 2012-F56 -- 2012 EK8, 2012 AA11
C90Vinyols Obs., 2 in MPEC 2012-F59 -- C/2011 F1, P/2010 JC81
G56Walnut Creek Obs. in northern California, 1 in MPEC 2012-F56 -- 2004 QJ7
C28Wellinghofen Obs. in Germany, 1 in MPEC 2012-F59 -- C/2009 P1
I15Wishing Star Obs. in Rhode Island, 3 in MPEC 2012-F56 -- 2012 BJ134, 2012 AA11, 2011 WV134
C42Xingming Obs. in China, 1 in MPEC 2012-F59 -- C/2009 P1
367Yatsuka Obs. in Japan, 9 in MPEC 2012-F59 -- C/2012 A2, C/2011 J2, C/2011 F1, C/2010 G2, C/2009 P1, 246P, 117P, 78P, 49P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 23 March '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 FA14JPL Sentry1558208912.0e-10-8.95-8.950JPL: "Analysis based on 19 observations spanning 1.0693 days (2012-Mar-21.29656 to 2012-Mar-22.365906)." Diameter approximately 0.096 km. from mean, weighted H=22.7.
NEODyS15582025-2090793.92e-07-5.33-6.290NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2012-03-21.297 to 2012-03-22.221."
2012 FR1JPL Sentry1558R E M O V E DJPL: Risk listing removed at 0933 UTC.
2012 FQ1JPL Sentry15582025-2105207.6e-07-2.90-3.240JPL: "Analysis based on 27 observations spanning 6.1342 days (2012-Mar-16.16837 to 2012-Mar-22.3026)." Diameter approximately 0.512 km. from mean, weighted H=19.1.
NEODyS15582025-203446.07e-07-2.97-3.170NEODyS: "Based on 27 optical observations (of which 0 are rejected as outliers) from 2012-03-16.169 to 2012-03-22.303."
2012 ER14NEODyS1558R E M O V E D-
JPL Sentry1558R E M O V E DJPL: Risk listing removed at 0851 UTC.
2012 ES10JPL Sentry15582053-2085164.0e-06-4.49-4.820JPL: "Analysis based on 25 observations spanning 7.0377 days (2012-Mar-15.36929 to 2012-Mar-22.407)." Diameter approximately 0.060 km. from mean, weighted H=23.7.
2012 EP10JPL Sentry15582056-2112469.8e-05-6.45-6.850JPL: "Analysis based on 21 observations spanning 7.0927 days (2012-Mar-15.27159 to 2012-Mar-22.36427)." Diameter approximately 0.005 km. from mean, weighted H=29.2.
2012 EG5JPL Sentry1558210711.8e-07-6.77-6.770JPL: "Analysis based on 105 observations spanning 9.5857 days (2012-Mar-13.30201 to 2012-Mar-22.88768)." Diameter approximately 0.048 km. from mean, weighted H=24.2.
2012 ECJPL Sentry15582083-209932.6e-06-5.33-5.580JPL: "Analysis based on 80 observations spanning 21.041 days (2012-Mar-01.3419 to 2012-Mar-22.38285)." Diameter approximately 0.066 km. from mean, weighted H=23.5.
NEODyS15582083-208313.97e-07-6.09-6.090NEODyS: "Based on 80 optical observations (of which 0 are rejected as outliers) from 2012-03-01.343 to 2012-03-22.384."

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 23 March '12

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

1938Grabbed MPEC 2012-F59 - Observations and Orbits of Comets - see above
1835Grabbed MPEC 2012-F57 - 2012 FJ15 - see above
Grabbed MPEC 2012-F58 - 2012 FK15 - see above
1559Posted Traffic Report
1558Noted that JPL Sentry has updated its 2012 EC risk assessment - see above
Noted that NEODyS has updated its 2012 EC risk assessment - see above
Noted that JPL Sentry has reposted 2012 EG5 as an impact risk - see above
Noted that JPL Sentry has updated its 2012 EP10 risk assessment - see above
Noted that JPL Sentry has removed 2012 ER14 as an impact risk - see above
Noted that NEODyS has removed 2012 ER14 as an impact risk - see above
Noted that JPL Sentry has updated its 2012 ES10 risk assessment - see above
Noted that JPL Sentry has updated its 2012 FA14 risk assessment - see above
Noted that NEODyS has posted 2012 FA14 as an impact risk - see above
Noted that JPL Sentry has updated its 2012 FQ1 risk assessment - see above
Noted that NEODyS has updated its 2012 FQ1 risk assessment - see above
Noted that JPL Sentry has removed 2012 FR1 as an impact risk - see above
Grabbed MPEC 2012-F56 - Daily Orbit Update - see above