Contents  on 28 January '12

Note: These A/CC news pages will update less often and less regularly than usual through Tuesday, January 31st, possibly later.

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 28 January '12

Four objects reported inside ten LD

There are four objects reported passing within ten lunar distances (LD) of our planet today. Intruder 2012 BX34 is within one LD of both Earth and Moon. Further away, risk-listed 2012 BW13 is outbound from 4.94 to 7.47 LD, 2012 BD14 travels from 7.46 to 6.56 LD, and 2012 BS1 leaves ten LD, moving from 8.71 to 10.59 LD.

Up next, radar target 2011 CP4 arrives inside ten LD on February 22nd.

This report was updated at 2132 UTC with new discovery 2012 BA77 (MPEC) and follow-up in today's DOU MPEC for 2012 BX34, 2012 BD14, and 2012 BO11, as well as for distant 2010 JK1 and 308635 2005 YU55. This report was previously updated at 1219 UTC.


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 28 January '12

The MPC's NEO Confirmation Page has 37 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 37 objects listed. Of these, 32 were "one nighters." So far The Tracking News has counted a total of 53 listings on the NEOCP today.

New MPECs  on 28 January '12

Minor Planet Electronic Circulars

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


MPEC 2012-B95 - "21:19 UT" - P/2003 HT15 = 2012 B2 (LINEAR)


MPEC 2012-B94 - "20:40 UT" - 2012 BO77


MPEC 2012-B93 - "18:22 UT" - 2012 BN77


MPEC 2012-B92 - "17:21 UT" - 2011 XE = 2010 BK10


MPEC 2012-B91 - "17:17 UT" - 2011 UE256 = 1998 VD31


MPEC 2012-B90 - "16:24 UT" - 2012 BM77


MPEC 2012-B89 - "16:22 UT" - 2012 BL77


MPEC 2012-B88 - "16:20 UT" - 2012 BK77


MPEC 2012-B87 - "12:25 UT" - 2012 BF77


MPEC 2012-B86 - "12:23 UT" - 2012 BE77


MPEC 2012-B85 - "12:21 UT" - 2012 BD77


MPEC 2012-B84 - "12:19 UT" - 2012 BC77


MPEC 2012-B83 - "12:17 UT" - 2012 BB77


MPEC 2012-B82 - "12:15 UT" - 2012 BA77


MPEC 2012-B81 - "12:13 UT" - 2012 BZ76


MPEC 2012-B80 - "12:11 UT" - 2012 BY76


<< DOU on 28 Jan. '12 >>  MPEC 2012-B79 - "06:05 UT" - Daily Orbit Update


<< OOC on 28 Jan. '12 >> MPEC 2012-B78 - "03:04 UT" - Observations and Orbits of Comets

Observers  on 28 January '12

A total of 84 observers appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 2 in MPEC 2012-B78 -- C/2012 A2, C/2012 A1
B37Ametlla del Valles Obs. in Spain, 2 in MPEC 2012-B78 -- P/2011 W1, 10P
A50Andrushivka Obs. in the Ukraine, 1 in MPEC 2012-B94 -- 2012 BO77
I47Auger Obs. in Argentina, 3 in MPECs 2012-B78 & 2012-B83 -- 2012 BB77, C/2011 R1, C/2009 F4
A81Balzaretto Obs. in Italy, 2 in MPEC 2012-B78 -- C/2010 G2, 78P
B75Betelgeuse Station in Italy, 2 in MPEC 2012-B78 -- P/2011 W2, C/2011 G1
300Bisei Spaceguard Center in Japan, 5 in MPEC 2012-B79 -- 2011 SL102, 2003 BL1, 170502, 154656, 433
I99Blanquita Obs. in Spain, 2 in MPEC 2012-B78 -- C/2010 G2, 164P
B96Brixiis Obs. in Belgium, 2 in MPEC 2012-B78 -- 213P, 78P
215Buchloe Obs. in Germany, 19 in MPEC 2012-B78 -- C/2012 A1, P/2011 W2, P/2011 W1, P/2011 UA134, P/2011 U1, P/2011 R3, P/2011 P1, P/2011 N1, C/2011 G1, C/2010 FB87, 255P, 253P, 244P, 176P, 131P, 78P, 65P, 36P, 9P
G51Byrne Obs. in southern California, 2 in MPECs 2012-B85 & 2012-B86 -- 2012 BE77, 2012 BD77
235CAST Obs. in Italy, 3 in MPEC 2012-B78 -- C/2010 G2, 255P, 78P
B66Casasco Obs. in Italy, 4 in MPEC 2012-B78 -- P/2011 W2, C/2011 G1, 244P, 78P
160Castelmartini Obs. in Italy, 14 in MPECs 2012-B78 & 2012-B79 -- P/2011 W2, C/2011 Q4, C/2011 F1, P/2010 JC81, C/2010 G2, 2008 WZ13, 202435, 255P, 244P, 213P, 164P, 78P, 65P, 21P
703Catalina Sky Survey (CSS) in Arizona, 12 in MPECs 2012-B78, 2012-B79, 2012-B83, 2012-B87, 2012-B88 & 2012-B90 -- 2012 BX34, 2012 BM77, 2012 BK77, 2012 BF77, 2012 BB77, 2011 SL102, C/2011 J2, P/2010 JC81, 307493, 254P, 242P, 164P
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 5 in MPECs 2012-B79, 2012-B81, 2012-B83, 2012-B90 & 2012-B94 -- 2012 BZ76, 2012 BO77, 2012 BM77, 2012 BD14, 2012 BB77
A77Chante-Perdrix Obs. in France, 3 in MPEC 2012-B78 -- C/2010 G2, C/2009 P1, 78P
970Chelmsford Obs. in England, 2 in MPEC 2012-B78 -- C/2010 G2, 244P
J01Cielo Profundo Obs. in Spain, 2 in MPEC 2012-B78 -- C/2009 P1, 244P
850Cordell-Lorenz Obs. in Tennessee, 3 in MPEC 2012-B78 -- C/2012 A2, C/2011 G1, C/2009 P1
106Crni Vrh Obs. in Slovenia, 2 in MPEC 2012-B79 -- 85839, 275714
958Dax Obs. in France, 18 in MPEC 2012-B78 -- P/2011 W2, C/2011 S2, P/2011 R3, C/2011 F1, C/2010 S1, P/2010 JC81, C/2010 G2, C/2010 FB87, C/2009 P1, C/2008 S3, 246P, 213P, 164P, 123P, 78P, 49P, 45P, 29P
G48Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) in New Mexico, 2 in MPEC 2012-B79 -- 2012 BT23, 2011 YV15
639Dresden Obs. in Germany, 2 in MPEC 2012-B79 -- 2011 XE1, 2011 WV134
I19El Gato Gris Obs. in Argentina, 1 in MPEC 2012-B83 -- 2012 BB77
J19El Maestrat Obs. in Spain, 1 in MPEC 2012-B78 -- C/2011 G1
F65%Tim Lister in southern California via Faulkes Telescope North in Hawaii, 2 in MPECs 2012-B81 & 2012-B93 -- 2012 BZ76, 2012 BN77
I88Fuensanta de Martos Obs., 2 in MPEC 2012-B78 -- C/2010 G2, C/2009 P1
372Geisei Obs. in Japan, 8 in MPECs 2012-B78 & 2012-B95 -- P/2012 B2, C/2012 A2, C/2012 A1, P/2011 W2, C/2011 UF305, P/2011 U1, P/2011 R3, C/2011 L4
203GiaGa Obs. in Italy, 2 in MPEC 2012-B78 -- C/2011 G1, 244P
J95Great Shefford Obs. in England, 4 in MPECs 2012-B79, 2012-B87, 2012-B88 & 2012-B90 -- 2012 BX34, 2012 BM77, 2012 BK77, 2012 BF77
H15ISON-NM Obs. in New Mexico, 1 in MPEC 2012-B78 -- P/2011 N1
585Kiev Comet Station in the Ukraine, 2 in MPEC 2012-B78 -- C/2010 G2, 244P
695{Tomas Vorobjov in England via Kitt Peak Natl. Obs. (KPNO) in Arizona, 2 in MPECs 2012-B78 & 2012-B83 -- 2012 BB77, P/2012 B1
D95Kurihara Obs. in Japan, 4 in MPEC 2012-B78 -- C/2010 G2, C/2008 FK75, C/2007 Q3, C/2006 S3
704LINEAR in New Mexico, 21 in MPECs 2012-B78 & 2012-B79 -- 2011 YM63, P/2011 W2, P/2011 R3, C/2011 J2, C/2010 G2, C/2010 FB87, 2009 WR6, 2005 NJ1, 275792, 262623, 21088, 163696, 153951, 142348, 141018, 136923, 101873, 246P, 215P, 78P, 49P
J31La Axarquia Obs. in Spain, 2 in MPEC 2012-B78 -- C/2012 A2, P/2011 W2
J14La Corte Obs. in the Canary Islands, 1 in MPEC 2012-B79 -- 1627
J38La Vara Obs. in Spain, 5 in MPEC 2012-B78 -- C/2012 A2, C/2010 S1, C/2010 G2, 255P, 78P
J133Ernesto Guido in Italy via the Liverpool Telescope in the Canary Islands, 2 in MPEC 2012-B78 -- 164P, 49P
I36Los Campitos Obs. in Argentina, 3 in MPECs 2012-B78, 2012-B79 & 2012-B83 -- 2012 BX34, 2012 BB77, C/2009 F4
130Lumezzane Obs. in Italy, 1 in MPEC 2012-B78 -- 243P
H01Magdalena Ridge Obs. (MRO) in New Mexico, 4 in MPECs 2012-B81, 2012-B83, 2012-B87 & 2012-B88 -- 2012 BZ76, 2012 BK77, 2012 BF77, 2012 BB77
B82Maidbronn Obs. in Germany, 5 in MPEC 2012-B78 -- C/2008 FK75, 255P, 176P, 78P, 36P
181Makes Obs., 1 in MPEC 2012-B79 -- 308635
B10Mas des Gres Obs., 1 in MPEC 2012-B78 -- 78P
5682David Tholen's team on Mauna Kea in Hawaii, 5 in MPECs 2012-B80, 2012-B82, 2012-B84, 2012-B85 & 2012-B89 -- 2012 BY76, 2012 BL77, 2012 BD77, 2012 BC77, 2012 BA77
118Modra Obs. in Slovakia, 1 in MPEC 2012-B78 -- C/2012 A1
213Montcabre Obs. in Spain, 8 in MPEC 2012-B78 -- C/2012 A2, C/2012 A1, P/2010 JC81, C/2010 G2, C/2009 P1, 255P, 49P, 29P
945Monte Deva Obs. in Spain, 6 in MPEC 2012-B78 -- C/2012 A2, C/2011 F1, C/2010 G2, 78P, 49P, 21P
C91Montevenere Obs., 3 in MPEC 2012-B79 -- 2011 WV134, 153951, 141018
900Moriyama Obs. in Japan, 3 in MPEC 2012-B78 -- C/2011 G1, C/2010 G2, 255P
G96Mt. Lemmon Survey (MLS) in Arizona, 9 in MPECs 2012-B79, 2012-B86 & 2012-B94 -- 2012 BZ34, 2012 BO77, 2012 BE77, 2011 VR5, 2005 XK8, 1997 CZ3, 311321, 285625, 3200
E07Murrumbateman Obs. in New South Wales, 3 in MPEC 2012-B78 -- P/2011 W2, C/2011 L2, 97P
D81Nagano Obs. in Japan, 2 in MPEC 2012-B78 -- C/2011 Q4, C/2009 P1
J47Nazaret Obs. in Spain, 3 in MPEC 2012-B78 -- 255P, 213P, 164P
I89Nerpio Obs. in Italy, 1 in MPEC 2012-B79 -- 2012 BX34
A24New Millennium Obs. in Italy, 5 in MPEC 2012-B78 -- C/2011 G1, C/2010 S1, C/2008 FK75, 244P, 78P
C23Olmen Obs. in Belgium, 7 in MPEC 2012-B78 -- C/2012 A2, P/2011 W2, C/2011 G1, P/2010 JC81, C/2009 P1, 244P, 49P
F51Pan-STARRS 1 (PS1) in Hawaii, 16 in MPECs 2012-B78, 2012-B79, 2012-B80, 2012-B81, 2012-B82, 2012-B84, 2012-B85, 2012-B86, 2012-B89 & 2012-B93 -- 2012 BZ76, 2012 BY76, 2012 BN77, 2012 BL77, 2012 BF14, 2012 BE77, 2012 BD77, 2012 BC77, 2012 BA77, 2012 AC11, 2002 AX1, 1997 CZ3, 310737, 243147, 11066, 242P
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 12 in MPECs 2012-B78 & 2012-B79 -- C/2012 A2, 2011 YV15, 2011 YU74, 2011 SL102, C/2011 G1, 2008 QY, 2008 GE1, 2006 VY13, 164P, 78P, 49P, 29P
0841Alexander V. Devyatkin via Pulkovo Obs. in Russia, 1 in MPEC 2012-B79 -- 308635
C20Pulkovo Obs. Kislovodsk Mtn. Station in Russia, 1 in MPEC 2012-B79 -- 308635
H06%Ernesto Guido in Italy via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2012-B78 -- 29P
H068program code 8 via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2012-B79 -- 2012 BX34
H06|Hidetaka Sato in Japan via RAS Obs. Mayhill in New Mexico, 2 in MPEC 2012-B78 -- P/2012 B1, C/2011 U3
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 8 in MPECs 2012-B78 & 2012-B83 -- 2012 BB77, P/2011 W2, C/2011 L4, C/2009 F4, 246P, 164P, 117P, 49P
E03`Kevin Hills in England via RAS Obs. Victoria in Victoria, 3 in MPEC 2012-B78 -- C/2011 S2, C/2011 R1, C/2010 B1
J41Raheny Obs. in Ireland, 1 in MPEC 2012-B94 -- 2012 BO77
I20Rio Cuarto Obs. in Argentina, 2 in MPECs 2012-B79 & 2012-B83 -- 2012 BX34, 2012 BB77
939Rodeno Obs. in Spain, 6 in MPEC 2012-B78 -- C/2011 F1, C/2010 S1, C/2010 G2, 78P, 49P, 29P
B04Saint-Barthelemy Obs. in Italy, 1 in MPEC 2012-B79 -- 308635
H36Sandlot Obs. in Kansas, 1 in MPEC 2012-B79 -- 2010 JK1
B56Sant Pere Obs. in Spain, 1 in MPEC 2012-B78 -- C/2010 G2
B74Santa Maria de Montmagastrell Obs. in Spain, 1 in MPEC 2012-B78 -- C/2010 G2
204Schiaparelli Obs. in Italy, 18 in MPECs 2012-B78, 2012-B81 & 2012-B83 -- 2012 BZ76, 2012 BB77, P/2011 W1, P/2011 U1, C/2010 S1, C/2010 G2, C/2008 FK75, C/2005 L3, 253P, 244P, 213P, 176P, 164P, 130P, 117P, 78P, 49P, 36P
D93Sendai Obs. in Japan, 1 in MPEC 2012-B78 -- C/2012 A2
691Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2012-B79 -- 68063, 172722
291Spacewatch 1.8m telescope in Arizona, 9 in MPECs 2012-B79, 2012-B81, 2012-B85 & 2012-B93 -- 2012 BZ76, 2012 BS23, 2012 BO11, 2012 BN77, 2012 BN11, 2012 BJ14, 2012 BD77, 2005 CZ36, 68063
I40TRAPPIST in Chile, 1 in MPEC 2012-B78 -- 27P
I81Tarbatness Obs. in Scotland, 5 in MPEC 2012-B78 -- P/2011 W2, C/2010 S1, C/2010 G2, 78P, 49P
B51Vallauris Obs. in France, 6 in MPEC 2012-B78 -- P/2011 W2, C/2011 G1, C/2010 S1, C/2009 P1, 244P, 29P
C90Vinyols Obs., 4 in MPEC 2012-B78 -- C/2012 A2, C/2010 G2, 78P, 49P
G56Walnut Creek Obs. in northern California, 1 in MPEC 2012-B79 -- 2012 AA11
C42Xingming Obs. in China, 1 in MPEC 2012-B78 -- C/2009 P1
D20Zadko Obs. in Western Australia, 1 in MPEC 2012-B79 -- 308635
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 28 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 BC77NEODyS16042032-2088111.23e-08-7.42-7.610NEODyS: "Based on 6 optical observations (of which 0 are rejected as outliers) from 2012-01-25.415 to 2012-01-26.390."
JPL Sentry14452037-2111364.7e-08-7.15-7.720JPL: "Analysis based on 6 observations spanning .97500 days (2012-Jan-25.41375 to 2012-Jan-26.388754)." Diameter approximately 0.036 km. from mean, weighted H=24.9.
2012 BA77NEODyS16042015-20903403.09e-06-5.37-5.950NEODyS: "Based on 6 optical observations (of which 0 are rejected as outliers) from 2012-01-24.368 to 2012-01-26.371."
JPL Sentry14452015-21112513.0e-06-5.57-6.070JPL: "Analysis based on 6 observations spanning 2.0030 days (2012-Jan-24.36724 to 2012-Jan-26.370203)." Diameter approximately 0.022 km. from mean, weighted H=25.9.
2012 BU61NEODyS12062036-2080112.97e-08-5.34-5.640NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2012-01-26.095 to 2012-01-27.112."
2012 BJ14JPL Sentry1206R E M O V E DJPL: Risk listing removed at 0853 UTC.
2012 BO11NEODyS12062076-207611.19e-08-8.48-8.480NEODyS: "Based on 37 optical observations (of which 1 are rejected as outliers) from 2012-01-19.493 to 2012-01-27.542."
JPL Sentry1206R E M O V E DJPL: Risk listing removed at 0853 UTC.

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 28 January '12

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

2145Grabbed MPEC 2012-B95 - P/2003 HT15 = 2012 B2 (LINEAR) - see above
2053Grabbed MPEC 2012-B94 - 2012 BO77 - see above
1845Grabbed MPEC 2012-B91 - 2011 UE256 = 1998 VD31 - see above
Grabbed MPEC 2012-B92 - 2011 XE = 2010 BK10 - see above
Grabbed MPEC 2012-B93 - 2012 BN77 - see above
1641Grabbed MPEC 2012-B88 - 2012 BK77 - see above
Grabbed MPEC 2012-B89 - 2012 BL77 - see above
Grabbed MPEC 2012-B90 - 2012 BM77 - see above
1604Noted that NEODyS has posted 2012 BA77 as an impact risk - see above
Noted that NEODyS has posted 2012 BC77 as an impact risk - see above
1445Noted that JPL Sentry has posted 2012 BA77 as an impact risk - see above
Noted that JPL Sentry has posted 2012 BC77 as an impact risk - see above
Grabbed MPEC 2012-B80 - 2012 BY76 - see above
Grabbed MPEC 2012-B81 - 2012 BZ76 - see above
Grabbed MPEC 2012-B82 - 2012 BA77 - see above
Grabbed MPEC 2012-B83 - 2012 BB77 - see above
Grabbed MPEC 2012-B84 - 2012 BC77 - see above
Grabbed MPEC 2012-B85 - 2012 BD77 - see above
Grabbed MPEC 2012-B86 - 2012 BE77 - see above
Grabbed MPEC 2012-B87 - 2012 BF77 - see above
1219Updated Traffic Report
1206Noted that JPL Sentry has removed 2012 BJ14 as an impact risk - see above
Noted that JPL Sentry has removed 2012 BO11 as an impact risk - see above
Noted that NEODyS has reposted 2012 BO11 as an impact risk - see above
Noted that NEODyS has posted 2012 BU61 as an impact risk - see above
Grabbed MPEC 2012-B79 - Daily Orbit Update - see above
0352Grabbed MPEC 2012-B78 - Observations and Orbits of Comets - see above