Contents  on 27 January '11

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.

NEOCP Activity  on 27 January '11

The MPC's NEO Confirmation Page has 6 listings: 6 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had six updated listings. Of these, four were "one nighters." So far The Tracking News has counted a total of fifteen listings on the NEOCP at some point today.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.

New MPECs  on 27 January '11

Minor Planet Electronic Circulars

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


MPEC 2011-B45 - "10:28 UT" - 2011 BV15


<< DOU on 27 Jan. '11 >>  MPEC 2011-B44 - "07:08 UT" - Daily Orbit Update


MPEC 2011-B43 - "05:20 UT" - 2011 BT15


MPEC 2011-B42 - "03:31 UT" - 2011 BR15


MPEC 2011-B41 - "02:39 UT" - Observations and Orbits of Comets

Observers  on 27 January '11

A total of 77 observers appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 18 in MPEC 2011-B41 -- P/2011 A1, C/2010 S1, P/2010 R2, C/2010 KW7, C/2010 B1, C/2009 Y1, C/2009 P1, C/2009 K5, C/2008 P1, C/2006 S3, 248P, 123P, 103P, 88P, 65P, 43P, 29P, 10P
J97Alginet Obs. in Spain, 3 in MPEC 2011-B41 -- C/2010 B1, C/2009 K5, 10P
J24Altamira Obs. in the Canary Islands, 12 in MPEC 2011-B41 -- P/2011 A1, P/2010 WK, C/2010 S1, C/2010 B1, C/2009 K5, C/2008 S3, 248P, 247P, 241P, 240P, 103P, 10P
H21Astronomical Research Obs. Westfield in Illinois, 3 in MPEC 2011-B44 -- 2011 AL5, 2011 AL24, 2011 AA37
J51Atlante Obs. in the Canary Islands, 5 in MPEC 2011-B41 -- C/2010 B1, 247P, 240P, 123P, 103P
300Bisei Spaceguard Center in Japan, 1 in MPEC 2011-B42 -- 2011 BR15
I99Blanquita Obs. in Spain, 7 in MPEC 2011-B41 -- P/2010 WK, C/2010 B1, C/2009 K5, 240P, 123P, 103P, 29P
B96Brixiis Obs. in Belgium, 3 in MPEC 2011-B41 -- C/2010 S1, C/2009 K5, 10P
215Buchloe Obs. in Germany, 5 in MPEC 2011-B41 -- C/2010 S1, P/2010 N1, 123P, 65P, 10P
J02Busot Obs. in Spain, 4 in MPEC 2011-B41 -- C/2008 S3, 241P, 223P, 29P
160Castelmartini Obs. in Italy, 16 in MPECs 2011-B41 & 2011-B44 -- 2010 YB, P/2010 WK, 2010 LR68, C/2009 K5, 2000 CR101, 85275, 36284, 34613, 23183, 175706, 137052, 247P, 240P, 123P, 31P, 10P
703Catalina Sky Survey (CSS) in Arizona, 13 in MPECs 2011-B41 & 2011-B44 -- 2011 BX10, 2010 XP51, 2010 TP54, 2007 EJ, 2007 CA27, C/2006 S3, 2005 GW119, 2002 OS4, 48603, 248P, 241P, 228P, 203P
470Ceccano Obs. in Italy, 1 in MPEC 2011-B41 -- C/2007 Q3
B24Cesson Obs. in France, 1 in MPEC 2011-B41 -- C/2010 B1
G58Chabot Obs. in northern California, 4 in MPEC 2011-B44 -- 2011 BV11, 2011 BB, 2011 AW55, 2000 RJ60
A77Chante-Perdrix Obs. in France, 11 in MPEC 2011-B41 -- C/2011 A3, P/2011 A2, P/2011 A1, C/2010 X1, C/2010 S1, 247P, 236P, 123P, 43P, 29P, 10P
J01Cielo Profundo Obs. in Spain, 13 in MPEC 2011-B41 -- C/2011 A3, P/2011 A1, C/2010 X1, P/2010 WK, C/2010 KW7, C/2010 G2, C/2010 B1, C/2009 K5, 247P, 241P, 123P, 103P, 29P
958Dax Obs. in France, 19 in MPEC 2011-B41 -- C/2010 X1, P/2010 WK, P/2010 U2, C/2010 S1, C/2010 B1, C/2009 Y1, C/2009 K5, C/2008 S3, 247P, 241P, 240P, 223P, 203P, 162P, 123P, 103P, 43P, 29P, 10P
J04ESA Optical Ground Station in the Canary Islands, 1 in MPEC 2011-B44 -- 2011 AO4
E85Farm Cove Obs. in New Zealand, 2 in MPEC 2011-B41 -- P/2011 A2, 231P
F65%T. Lister via Faulkes Telescope North in Hawaii, 1 in MPEC 2011-B43 -- 2011 BT15
F659Marco Micheli in Hawaii via Faulkes Telescope North in Hawaii, 1 in MPEC 2011-B44 -- 2010 TF54
C18Frasnes-Lez-Anvaing Obs., 1 in MPEC 2011-B41 -- 123P
372Geisei Obs. in Japan, 2 in MPEC 2011-B41 -- P/2011 A1, C/2010 X1
203GiaGa Obs. in Italy, 3 in MPEC 2011-B41 -- P/2010 WK, C/2009 K5, 123P
B83Gieres Obs. in France, 1 in MPEC 2011-B41 -- 103P
E94Gisborne Obs. in New Zealand, 2 in MPEC 2011-B41 -- C/2010 FB87, C/2010 B1
E16Grove Creek Obs. in New South Wales, 2 in MPEC 2011-B41 -- C/2010 B1, 103P
442Gualba Obs. in Spain, 1 in MPEC 2011-B41 -- 29P
379Hamamatsu-Yuto Obs. in Japan, 1 in MPEC 2011-B44 -- 2011 AL37
H15ISON-NM Obs. in New Mexico, 2 in MPEC 2011-B41 -- C/2010 X1, C/2010 D4
G92Jarnac Obs. in Arizona, 2 in MPEC 2011-B41 -- C/2009 K5, 123P
046Klet Obs. in the Czech Republic, 6 in MPEC 2011-B41 -- C/2010 S1, C/2010 B1, C/2008 S3, 223P, 103P, 10P
D95Kurihara Obs. in Japan, 5 in MPEC 2011-B41 -- C/2010 B1, C/2009 Y1, 247P, 240P, 103P
704LINEAR in New Mexico, 11 in MPECs 2011-B41 & 2011-B44 -- 2011 AB3, P/2010 WK, C/2010 S1, 2010 PR10, C/2010 B1, 207945, 198856, 137052, 3122, 247P, 103P
699LONEOS in Arizona, 1 in MPEC 2011-B41 -- C/2006 S3
212La Dehesilla Obs. in Spain, 2 in MPEC 2011-B41 -- C/2008 S3, 103P
J38La Vara Obs. in Spain, 9 in MPEC 2011-B41 -- P/2010 WK, C/2010 S1, C/2010 B1, C/2009 Y1, 247P, 240P, 123P, 103P, 29P
844Los Molinos Obs. in Uruguay, 1 in MPEC 2011-B41 -- 103P
560Madonna di Dossobuono Obs. in Italy, 1 in MPEC 2011-B41 -- 247P
H01Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2011-B41 -- 9P
B82Maidbronn Obs. in Germany, 4 in MPEC 2011-B41 -- C/2010 S1, C/2009 Y1, C/2008 FK75, 247P
C10Maisoncelles Obs. in France, 3 in MPEC 2011-B41 -- C/2010 B1, 236P, 103P
J40Malaga Obs. in Spain, 2 in MPEC 2011-B41 -- 123P, 103P
232Masquefa Obs. in Spain, 4 in MPEC 2011-B41 -- C/2010 B1, 240P, 103P, 29P
213Montcabre Obs. in Spain, 8 in MPEC 2011-B41 -- C/2011 A3, P/2011 A2, P/2011 A1, P/2010 WK, C/2010 B1, 247P, 240P, 29P
945Monte Deva Obs. in Spain, 6 in MPEC 2011-B41 -- P/2010 WK, C/2010 B1, C/2009 Y1, 240P, 103P, 29P
900Moriyama Obs. in Japan, 4 in MPEC 2011-B41 -- C/2010 B1, C/2009 K5, 123P, 103P
G96Mt. Lemmon Survey (MLS) in Arizona, 10 in MPECs 2011-B41 & 2011-B44 -- 2010 WQ7, C/2010 KW7, P/2010 D2, C/2008 S3, 2003 MJ4, 2002 OS4, 2002 BN, 259802, 163373, 228P
A13Naef Obs. in Switzerland, 10 in MPECs 2011-B41 & 2011-B44 -- 2011 BZ11, 2011 BX11, 2011 BU10, 2010 VK188, 36284, 144922, 138175, 246P, 231P, 31P
J47Nazaret Obs. in Spain, 7 in MPEC 2011-B41 -- P/2011 A1, C/2010 X1, 247P, 244P, 223P, 103P, 29P
C23Olmen Obs. in Belgium, 2 in MPEC 2011-B41 -- C/2010 S1, C/2009 Y1
D92Osaki Obs. in Japan, 7 in MPEC 2011-B41 -- P/2010 WK, C/2010 B1, C/2009 Y1, C/2009 K5, 247P, 123P, 103P
F51Pan-STARRS 1 in Hawaii, 1 in MPEC 2011-B43 -- 2011 BT15
B49Paus Obs. in Spain, 5 in MPEC 2011-B41 -- P/2011 A1, 247P, 241P, 240P, 123P
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 3 in MPEC 2011-B44 -- 1999 XR35, 96590, 198856
H06#M. Suzuki via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2011-B41 -- C/2011 A3
H06%Ernesto Guido in Italy via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2011-B41 -- C/2010 B1
H06|H. Sato in Japan via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2011-B41 -- P/2006 U1
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2011-B41 -- 29P
473Remanzacco Obs. in Italy, 2 in MPEC 2011-B41 -- C/2010 B1, 103P
071Rhozen Obs. in Bulgaria, 1 in MPEC 2011-B41 -- C/2007 Q3
I20Rio Cuarto Obs. in Argentina, 1 in MPEC 2011-B42 -- 2011 BR15
C09Rouet Obs. in France, 5 in MPEC 2011-B41 -- C/2010 S1, C/2010 B1, 240P, 123P, 103P
104San Marcello Pistoiese Obs. in Italy, 3 in MPEC 2011-B41 -- P/2010 WK, C/2009 K5, 248P
H36Sandlot Obs. in Kansas, 3 in MPECs 2011-B41, 2011-B44 & 2011-B45 -- 2011 BV15, 2011 BA, C/2007 VO53
B56Sant Pere Obs. in Spain, 2 in MPEC 2011-B41 -- C/2010 B1, 123P
B74Santa Maria de Montmagastrell Obs. in Spain, 3 in MPEC 2011-B41 -- C/2010 S1, C/2009 K5, 29P
204Schiaparelli Obs. in Italy, 13 in MPEC 2011-B41 -- P/2011 A2, P/2011 A1, C/2010 X1, C/2010 S1, C/2008 FK75, C/2005 L3, 241P, 240P, 223P, 203P, 123P, 103P, 29P
E12Siding Spring Survey (SSS) in New South Wales, 2 in MPECs 2011-B41 & 2011-B42 -- 2011 BR15, 9P
G68Sierra Stars Obs. in northern California, 1 in MPEC 2011-B41 -- 103P
691Spacewatch 0.9m telescope in Arizona, 11 in MPECs 2011-B41, 2011-B44 & 2011-B45 -- 2011 BV15, 53550, 53319, 48603, 175189, 15745, 152889, 241P, 231P, 203P, 31P
291Spacewatch 1.8m telescope in Arizona, 13 in MPECs 2011-B43, 2011-B44 & 2011-B45 -- 2011 BV15, 2011 BV10, 2011 BT15, 2011 BR15, 2011 BG10, 2011 AX22, 2011 AS26, 2011 AR26, 2011 AM12, 2011 AH37, 2011 AG5, 2010 XW58, 2010 VY139
B18Terskol Obs. in Russia, 2 in MPEC 2011-B41 -- C/2009 K5, 22P
H10Tzec Maun Obs. Mayhill in New Mexico, 20 in MPEC 2011-B41 -- P/2011 A1, C/2010 X1, P/2010 WK, C/2010 S1, C/2010 G2, C/2010 B1, C/2009 K5, C/2008 S3, C/2007 Q3, C/2005 L3, 247P, 241P, 240P, 231P, 203P, 123P, 103P, 43P, 29P, 10P
D96Tzec Maun Obs. Moorook in South Australia, 4 in MPECs 2011-B41 & 2011-B42 -- 2011 BR15, C/2010 FB87, C/2010 B1, 103P
H47Vicksburg Obs. in Mississippi, 10 in MPEC 2011-B41 -- C/2010 B1, C/2009 K5, C/2008 S3, C/2005 L3, 240P, 203P, 123P, 103P, 29P, 10P
B42Vitebsk Obs. in Belarus, 2 in MPEC 2011-B41 -- C/2009 K5, 123P
C51WISE in Earth polar orbit, 2 in MPEC 2011-B41 -- C/2010 FB87, 43P
J08Zonalunar Obs. in Spain, 2 in MPEC 2011-B41 -- C/2010 S1, C/2009 Y1
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 27 January '11

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 CLOMON (backup) 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
2011 BT15JPL Sentry17002016-21111596.0e-05-2.76-3.140JPL: "Analysis based on 10 observations spanning 2.8847 days (2011-Jan-24.28933 to 2011-Jan-27.17399)." Diameter approximately 0.131 km. from mean, weighted H=22.0.
NEODyS17002020-2089537.77e-05-2.50-3.070NEODyS: "Based on 10 optical observations (of which 0 are rejected as outliers) from 2011-01-24.290 to 2011-01-27.175."
2011 BA12NEODyS17002060-207943.18e-06-4.60-4.610NEODyS: "Based on 24 optical observations (of which 0 are rejected as outliers) from 2011-01-25.195 to 2011-01-26.401."
2011 BZ11JPL Sentry1700R E M O V E DJPL #2 for the day: Risk listing removed at 1134 UTC.
2011 BW11NEODyS17002018-2089252.52e-08-8.37-8.60NEODyS: "Based on 8 optical observations (of which 0 are rejected as outliers) from 2011-01-26.266 to 2011-01-26.446."
2011 BV11JPL Sentry17002041-2107197.0e-08-6.16-6.750JPL: "Analysis based on 15 observations spanning 1.9107 days (2011-Jan-25.26063 to 2011-Jan-27.17135)." Diameter approximately 0.075 km. from mean, weighted H=23.3.
NEODyS17002041-2087123.02e-08-6.26-6.580NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2011-01-25.261 to 2011-01-27.172."
2011 BX10JPL Sentry17002020-2106141.2e-07-3.78-4.220JPL: "Analysis based on 36 observations spanning 2.0340 days (2011-Jan-24.13405 to 2011-Jan-26.1681)." Diameter approximately 0.744 km. from mean, weighted H=18.3.
NEODyS17002044-209059.28e-09-4.76-4.950NEODyS: "Based on 36 optical observations (of which 0 are rejected as outliers) from 2011-01-24.135 to 2011-01-26.169."
2011 BG10JPL Sentry17002051-207442.2e-05-5.19-5.460JPL: "Analysis based on 25 observations spanning 3.1633 days (2011-Jan-23.26948 to 2011-Jan-26.43276)." Diameter approximately 0.018 km. from mean, weighted H=26.3.
NEODyS17002051-205132.03e-05-5.22-5.490NEODyS: "Based on 26 optical observations (of which 1 are rejected as outliers) from 2011-01-23.270 to 2011-01-26.434."
2011 AH37NEODyS1700R E M O V E D-
2011 AA37JPL Sentry1700R E M O V E DJPL: Risk listing removed at 1216 UTC.
2011 AX22JPL Sentry17002052-2107218.4e-05-3.99-4.090JPL: "Analysis based on 50 observations spanning 15.930 days (2011-Jan-10.30552 to 2011-Jan-26.23511)." Diameter approximately 0.038 km. from mean, weighted H=24.7.
NEODyS17002050-2088168.14e-05-4.00-4.090NEODyS: "Based on 50 optical observations (of which 0 are rejected as outliers) from 2011-01-10.306 to 2011-01-26.236."
2011 AG5JPL Sentry17002036-205794.8e-05-2.81-3.000JPL: "Analysis based on 70 observations spanning 18.920 days (2011-Jan-08.2673 to 2011-Jan-27.18725)." Diameter approximately 0.140 km. from mean, weighted H=22.0.
NEODyS17002036-205794.81e-05-2.81-3.010NEODyS: "Based on 70 optical observations (of which 0 are rejected as outliers) from 2011-01-08.268 to 2011-01-27.188."
2010 XW58JPL Sentry17002069-211083.5e-06-5.71-6.040JPL: "Analysis based on 54 observations spanning 45.828 days (2010-Dec-11.47391 to 2011-Jan-26.30199)." Diameter approximately 0.039 km. from mean, weighted H=24.7.
NEODyS17002069-208976.32e-07-6.33-6.530NEODyS: "Based on 55 optical observations (of which 1 are rejected as outliers) from 2010-12-11.475 to 2011-01-26.303."

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 27 January '11

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

1700Noted that JPL Sentry has updated its 2010 XW58 risk assessment - see above
Noted that NEODyS has updated its 2010 XW58 risk assessment - see above
Noted that JPL Sentry has removed 2011 AA37 as an impact risk - see above
Noted that JPL Sentry has updated its 2011 AG5 risk assessment - see above
Noted that NEODyS has updated its 2011 AG5 risk assessment - see above
Noted that NEODyS has removed 2011 AH37 as an impact risk - see above
Noted that JPL Sentry has updated its 2011 AX22 risk assessment - see above
Noted that NEODyS has updated its 2011 AX22 risk assessment - see above
Noted that NEODyS has posted 2011 BA12 as an impact risk - see above
Noted that JPL Sentry has updated its 2011 BG10 risk assessment - see above
Noted that NEODyS has updated its 2011 BG10 risk assessment - see above
Noted that JPL Sentry has posted 2011 BT15 as an impact risk - see above
Noted that NEODyS has posted 2011 BT15 as an impact risk - see above
Noted that JPL Sentry has updated its 2011 BV11 risk assessment - see above
Noted that NEODyS has posted 2011 BV11 as an impact risk - see above
Noted that NEODyS has posted 2011 BW11 as an impact risk - see above
Noted that JPL Sentry has updated its 2011 BX10 risk assessment - see above
Noted that NEODyS has updated its 2011 BX10 risk assessment - see above
Noted that JPL Sentry has removed 2011 BZ11 as an impact risk - see above
Grabbed MPEC 2011-B44 - Daily Orbit Update - see above
Grabbed MPEC 2011-B45 - 2011 BV15 - see above
0700Grabbed MPEC 2011-B43 - 2011 BT15 - see above
0346Grabbed MPEC 2011-B41 - Observations and Orbits of Comets - see above
Grabbed MPEC 2011-B42 - 2011 BR15 - see above
0250Noted that JPL Sentry has posted 2011 BZ11 as an impact risk - see above