Contents  on 20 January '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 20 January '12

Four objects reported inside ten LD

There are four rocky visitors reported traveling inside ten lunar distances (LD) of Earth today. Intruder 2012 BV1 is inside the Earth-Moon system. Further away, 2012 AQ10 is departing, traveling from 5.91 to 7.39 LD, 2012 BS1 comes in from 8.4 to 6.6 LD*, and 2011 YH40 exits ten LD, passing from 8.58 to 10.26 LD.

Coming toward Earth, risk-listed 2012 BY1 arrives inside ten LD on January 22nd and radar target 2011 CP4 comes inside on February 22nd.

This report was updated at 2354 UTC with new discovery 2012 BO11 (MPEC) and earlier with follow-up in today's DOU MPEC for 2012 AP10. This report was previously updated at 0059 and 1553 UTC.


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

NEOCP Activity  on 20 January '12

The MPC's NEO Confirmation Page has 30 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 30 objects listed. Of these, 25 were "one nighters." So far The Tracking News has counted a total of 54 listings on the NEOCP today.

New MPECs  on 20 January '12

Minor Planet Electronic Circulars

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


MPEC 2012-B31 - "21:34 UT" - 2012 BO11


MPEC 2012-B30 - "21:32 UT" - 2012 BN11


MPEC 2012-B29 - "21:30 UT" - 2012 BM11


MPEC 2012-B28 - "21:28 UT" - 2012 BL11


MPEC 2012-B27 - "21:25 UT" - 2012 BK11


MPEC 2012-B26 - "21:22 UT" - 2012 BJ11


MPEC 2012-B25 - "21:17 UT" - 2012 BG11


MPEC 2012-B24 - "21:15 UT" - 2012 BF11


<< OOC on 20 Jan. '12 >> MPEC 2012-B23 - "17:34 UT" - Observations and Orbits of Comets


<< DOU on 20 Jan. '12 >>  MPEC 2012-B22 - "06:04 UT" - Daily Orbit Update

Observers  on 20 January '12

A total of 74 observers appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 16 in MPEC 2012-B23 -- P/2011 UA134, P/2011 U2, C/2011 J2, C/2010 S1, C/2010 FB87, C/2008 FK75, 255P, 253P, 246P, 244P, 243P, 242P, 240P, 213P, 48P, 21P
H21Astronomical Research Obs. Westfield in Illinois, 2 in MPECs 2012-B29 & 2012-B30 -- 2012 BN11, 2012 BM11
132Bedoin Obs. in France, 11 in MPEC 2012-B23 -- C/2011 G1, C/2011 F1, P/2010 JC81, C/2010 G2, 246P, 244P, 242P, 164P, 117P, 78P, 49P
B75Betelgeuse Station in Italy, 7 in MPEC 2012-B23 -- C/2011 F1, C/2010 S1, C/2010 G2, C/2008 FK75, 255P, 78P, 49P
300Bisei Spaceguard Center in Japan, 1 in MPEC 2012-B23 -- C/2012 A2
I99Blanquita Obs. in Spain, 2 in MPEC 2012-B23 -- C/2010 G2, 78P
B96Brixiis Obs. in Belgium, 11 in MPEC 2012-B23 -- P/2011 W2, C/2011 G1, C/2011 F1, C/2010 S1, C/2010 G2, C/2009 P1, 255P, 244P, 242P, 164P, 78P
215Buchloe Obs. in Germany, 9 in MPEC 2012-B23 -- P/2011 Y2, C/2010 S1, C/2010 G2, C/2009 S3, C/2008 S3, C/2008 FK75, 242P, 213P, 130P
235CAST Obs. in Italy, 7 in MPEC 2012-B23 -- P/2011 W2, C/2011 G1, C/2010 G2, 255P, 242P, 78P, 65P
160Castelmartini Obs. in Italy, 17 in MPEC 2012-B23 -- P/2011 W2, C/2011 Q4, C/2011 G1, C/2011 F1, C/2010 S1, P/2010 JC81, C/2010 G2, C/2008 S3, C/2008 FK75, 255P, 244P, 213P, 164P, 78P, 65P, 49P, 21P
703Catalina Sky Survey (CSS) in Arizona, 26 in MPECs 2012-B22, 2012-B23, 2012-B26, 2012-B29 & 2012-B31 -- 2012 BO11, 2012 BM11, 2012 BJ11, 2011 YV15, 2011 YM63, C/2011 G1, C/2008 FK75, 2006 MJ10, 2005 YS, 2004 QB17, 1996 AE2, 66959, 32906, 311555, 305090, 29075, 285625, 275714, 204232, 172034, 154269, 138175, 3200, 3103, 255P, 213P
J01Cielo Profundo Obs. in Spain, 5 in MPEC 2012-B23 -- C/2011 F1, C/2010 G2, 244P, 49P, 29P
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2012-B23 -- C/2012 A2
B50Corner Obs. in Germany, 2 in MPEC 2012-B23 -- C/2010 G2, 78P
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2012-B23 -- C/2012 A2
448Desert Moon Obs. in New Mexico, 4 in MPEC 2012-B22 -- 2012 AU10, 2011 YG28, 2005 AH14, 192642
G48Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) in New Mexico, 2 in MPECs 2012-B22 & 2012-B26 -- 2012 BJ11, 2012 BB2
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2012-B23 -- C/2012 A2
F65%Tim Lister in southern California via Faulkes Telescope North in Hawaii, 2 in MPECs 2012-B22 & 2012-B27 -- 2012 BK11, 2012 AP10
157Frasso Sabino Obs. in Italy, 2 in MPEC 2012-B23 -- P/2011 W2, 255P
372Geisei Obs. in Japan, 3 in MPEC 2012-B23 -- C/2012 A1, P/2011 W2, C/2011 S2
B83Gieres Obs. in France, 2 in MPEC 2012-B23 -- C/2010 G2, 78P
E94Gisborne Obs. in New Zealand, 1 in MPEC 2012-B23 -- C/2009 F4
E16Grove Creek Obs. in New South Wales, 1 in MPEC 2012-B23 -- 49P
511Haute Provence Obs. in Germany, 3 in MPEC 2012-B23 -- P/2011 W2, 244P, 97P
I16IAA-AI Atacama in Chile, 1 in MPEC 2012-B23 -- P/2011 N1
H15ISON-NM Obs. in New Mexico, 3 in MPEC 2012-B22 -- 2003 BK47, 275714, 12923
C32Ka-Dar Obs. TAU Station in Russia, 1 in MPEC 2012-B23 -- 255P
585Kiev Comet Station in the Ukraine, 10 in MPEC 2012-B23 -- P/2011 W2, C/2011 G1, C/2010 G2, C/2010 FB87, C/2008 S3, 255P, 164P, 78P, 49P, 48P
D95Kurihara Obs. in Japan, 8 in MPEC 2012-B23 -- C/2011 UF305, C/2011 L4, C/2010 R1, C/2010 G2, C/2009 P1, 255P, 246P, 29P
704LINEAR in New Mexico, 19 in MPECs 2012-B22, 2012-B23 & 2012-B25 -- 2012 BZ1, 2012 BG11, 2012 BB2, C/2012 A2, 2011 XE1, C/2011 J2, P/2010 JC81, C/2010 G2, 2006 VY13, 2003 AF23, 2002 AN11, 66251, 37336, 138524, 138013, 4055, 2062, 1036, 244P
950.Ovidiu Vaduvescu via La Palma in the Canary Islands, 2 in MPECs 2012-B22 & 2012-B23 -- 2011 YC, P/2009 SK280
I36Los Campitos Obs. in Argentina, 3 in MPEC 2012-B23 -- C/2011 R1, C/2010 G2, C/2009 F4
130Lumezzane Obs. in Italy, 16 in MPECs 2012-B22 & 2012-B23 -- 2012 AE1, 2012 AC3, 2011 XO3, 2011 WV134, 2006 MJ10, 2002 BF25, 90147, 39796, 311555, 311044, 29075, 289315, 163696, 2062, 255P, 78P
C94MASTER-II Obs., 1 in MPEC 2012-B23 -- C/2012 A2
H01Magdalena Ridge Obs. (MRO) in New Mexico, 2 in MPECs 2012-B29 & 2012-B30 -- 2012 BN11, 2012 BM11
B82Maidbronn Obs. in Germany, 6 in MPEC 2012-B23 -- C/2010 S1, C/2010 G2, C/2008 FK75, 255P, 176P, 78P
B10Mas des Gres Obs., 1 in MPEC 2012-B23 -- C/2010 G2
213Montcabre Obs. in Spain, 4 in MPEC 2012-B23 -- C/2012 A1, P/2011 W2, C/2010 G2, C/2009 P1
945Monte Deva Obs. in Spain, 2 in MPEC 2012-B23 -- C/2010 G2, 78P
C91Montevenere Obs., 2 in MPEC 2012-B22 -- 175706, 10145
900Moriyama Obs. in Japan, 6 in MPEC 2012-B23 -- P/2011 W2, C/2011 R1, C/2011 G1, 242P, 164P, 78P
G96Mt. Lemmon Survey (MLS) in Arizona, 8 in MPECs 2012-B22, 2012-B23, 2012-B24, 2012-B25, 2012-B27 & 2012-B28 -- 2012 BL11, 2012 BK11, 2012 BG11, 2012 BF11, 168378, 141531, 243P, 45P
E07Murrumbateman Obs. in New South Wales, 5 in MPEC 2012-B23 -- P/2011 W2, C/2011 L2, C/2010 G2, 97P, 91P
J47Nazaret Obs. in Spain, 4 in MPEC 2012-B23 -- P/2011 W2, 255P, 164P, 29P
A24New Millennium Obs. in Italy, 6 in MPEC 2012-B22 -- 2011 WV134, 2011 SL102, 202435, 175706, 8567, 1620
C23Olmen Obs. in Belgium, 18 in MPEC 2012-B23 -- P/2011 W2, C/2011 G1, C/2011 F1, C/2010 S1, C/2010 R1, P/2010 JC81, C/2010 G2, C/2009 P1, C/2008 S3, C/2008 FK75, 255P, 244P, 213P, 164P, 78P, 49P, 29P, 21P
J43Oukaimeden Obs. in Morocco, 3 in MPEC 2012-B23 -- P/2011 W2, 49P, 21P
F51Pan-STARRS 1 (PS1) in Hawaii, 9 in MPECs 2012-B22, 2012-B27, 2012-B28 & 2012-B30 -- 2012 BN11, 2012 BL11, 2012 BK11, 2011 OR15, 2002 AW, 99799, 153951, 141018, 719
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 14 in MPECs 2012-B22 & 2012-B23 -- 2012 AE1, P/2011 W2, C/2011 G1, C/2010 S1, C/2010 G2, C/2008 FK75, 2006 MJ10, 1996 AE2, 138524, 255P, 244P, 242P, 213P, 78P
H06%Ernesto Guido in Italy via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2012-B23 -- C/2009 P1
H06|Hidetaka Sato in Japan via RAS Obs. Mayhill in New Mexico, 5 in MPEC 2012-B23 -- C/2012 A1, C/2011 Y3, P/2011 Y2, C/2011 S2, 255P
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 21 in MPEC 2012-B23 -- P/2011 W2, P/2011 R3, C/2011 R1, P/2011 N1, C/2010 G2, C/2010 B1, C/2009 F4, 253P, 246P, 244P, 242P, 176P, 164P, 130P, 123P, 117P, 97P, 78P, 65P, 49P, 48P
E03`Kevin Hills in England via RAS Obs. Victoria in Victoria, 1 in MPEC 2012-B23 -- C/2009 F4
J41Raheny Obs. in Ireland, 1 in MPEC 2012-B26 -- 2012 BJ11
071Rhozen Obs. in Bulgaria, 2 in MPEC 2012-B23 -- C/2010 G2, 78P
939Rodeno Obs. in Spain, 3 in MPEC 2012-B23 -- C/2010 S1, C/2010 G2, 78P
C49STEREO-A in heliocentric orbit leading Earth, 1 in MPEC 2012-B23 -- C/2008 Y12
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2012-B26 -- 2012 BJ11
104San Marcello Pistoiese Obs. in Italy, 5 in MPEC 2012-B23 -- C/2012 A2, C/2011 Y3, C/2011 G1, 97P, 21P
H36Sandlot Obs. in Kansas, 1 in MPEC 2012-B29 -- 2012 BM11
204Schiaparelli Obs. in Italy, 7 in MPEC 2012-B23 -- P/2011 W2, C/2011 F1, C/2010 FB87, C/2009 P1, 255P, 246P, 29P
D93Sendai Obs. in Japan, 1 in MPEC 2012-B23 -- C/2012 A2
510Siegen Obs. in Germany, 1 in MPEC 2012-B23 -- C/2012 A2
691Spacewatch 0.9m telescope in Arizona, 4 in MPECs 2012-B22 & 2012-B30 -- 2012 BN11, 2011 YM63, 310737, 719
291Spacewatch 1.8m telescope in Arizona, 6 in MPECs 2012-B22, 2012-B24, 2012-B26 & 2012-B28 -- 2012 BL11, 2012 BJ11, 2012 BF11, 2012 AP10, 2011 YZ28, 2005 EE224
A71Stixendorf Obs. in Austria, 2 in MPEC 2012-B23 -- 78P, 21P
I40TRAPPIST in Chile, 1 in MPEC 2012-B23 -- C/2011 L4
I81Tarbatness Obs. in Scotland, 4 in MPEC 2012-B23 -- C/2010 S1, C/2010 G2, 244P, 78P
C92Valdicerro Obs. in Italy, 1 in MPEC 2012-B23 -- C/2012 A2
B51Vallauris Obs. in France, 7 in MPEC 2012-B23 -- C/2011 F1, C/2010 FB87, 164P, 78P, 49P, 29P, 21P
H47Vicksburg Obs. in Mississippi, 2 in MPEC 2012-B23 -- 49P, 29P
C90Vinyols Obs., 1 in MPEC 2012-B23 -- C/2010 G2
940Waterlooville Obs. in England, 2 in MPEC 2012-B23 -- C/2010 G2, 78P
C28Wellinghofen Obs. in Germany, 1 in MPEC 2012-B23 -- C/2010 G2
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 20 January '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 BN11JPL Sentry23592026-2099292.8e-08-5.27-5.760JPL: "Analysis based on 13 observations spanning .90896 days (2012-Jan-19.46782 to 2012-Jan-20.37678)." Diameter approximately 0.230 km. from mean, weighted H=20.8.
2012 BK11JPL Sentry23222038-208859.3e-10-7.90-8.240JPL: "Analysis based on 14 observations spanning 1.0983 days (2012-Jan-19.45989 to 2012-Jan-20.558222)." Diameter approximately 0.097 km. from mean, weighted H=22.7.
2012 BY1NEODyS15172019-20891312.07e-06-6.02-6.850NEODyS: "Based on 10 optical observations (of which 0 are rejected as outliers) from 2012-01-18.391 to 2012-01-19.398."
JPL Sentry00282019-2110851.8e-06-5.97-6.700JPL: "Analysis based on 10 observations spanning 1.0070 days (2012-Jan-18.39002 to 2012-Jan-19.39704)." Diameter approximately 0.021 km. from mean, weighted H=26.0.
2012 BU1NEODyS15172057-208632.49e-05-5.95-6.00NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2012-01-18.322 to 2012-01-19.408."
2012 AP10JPL Sentry15172069-2111729.5e-05-5.09-5.810JPL: "Analysis based on 63 observations spanning 9.1249 days (2012-Jan-11.08359 to 2012-Jan-20.20847)." Diameter approximately 0.018 km. from mean, weighted H=26.4.
NEODyS15172064-2089528.72e-05-5.05-5.70NEODyS: "Based on 57 optical observations (of which 2 are rejected as outliers) from 2012-01-11.084 to 2012-01-19.208."

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 20 January '12

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

2359Noted that JPL Sentry has posted 2012 BN11 as an impact risk - see above
2354Updated Traffic Report
2322Noted that JPL Sentry has posted 2012 BK11 as an impact risk - see above
2218Grabbed MPEC 2012-B24 - 2012 BF11 - see above
Grabbed MPEC 2012-B25 - 2012 BG11 - see above
Grabbed MPEC 2012-B26 - 2012 BJ11 - see above
Grabbed MPEC 2012-B27 - 2012 BK11 - see above
Grabbed MPEC 2012-B28 - 2012 BL11 - see above
Grabbed MPEC 2012-B29 - 2012 BM11 - see above
Grabbed MPEC 2012-B30 - 2012 BN11 - see above
Grabbed MPEC 2012-B31 - 2012 BO11 - see above
1800Grabbed MPEC 2012-B23 - Observations and Orbits of Comets - see above
1517Noted that JPL Sentry has updated its 2012 AP10 risk assessment - see above
Noted that NEODyS has updated its 2012 AP10 risk assessment - see above
Noted that NEODyS has posted 2012 BU1 as an impact risk - see above
Noted that NEODyS has posted 2012 BY1 as an impact risk - see above
Grabbed MPEC 2012-B22 - Daily Orbit Update - see above
0028Noted that JPL Sentry has posted 2012 BY1 as an impact risk - see above