Contents  on 2 February '12

Note: These A/CC news pages will update less often and less regularly than usual through Thursday, February 2nd.

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 2 February '12

One object reported inside ten LD

One object is reported moving within ten lunar distances (LD) of our planet today. 2012 BD14 is outbound, traveling from 6.68 to 7.61 LD. Next up, radar target 2011 CP4 arrives inside ten LD on February 22nd.

This report was updated at 1201 UTC with follow-up in today's DOU MPEC for 2012 BV61 and 2011 CP4, as well as observations of 2011 UO91 and 2011 UT from last October. This report was previously updated at 0232 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 2 February '12

The MPC's NEO Confirmation Page has 33 listings

When last checked at 1631 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 33 objects listed. Of these, 21 were "one nighters." The Tracking News counted a total of 42 listings on the NEOCP on this day.

New MPECs  on 2 February '12

Minor Planet Electronic Circulars

There were eight MPECs posted this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2012-C14 - "22:12 UT" - Comet P/2011 VJ5 (Lemmon)


MPEC 2012-C13 - "18:59 UT" - 2012 CD


<< DOU on 2 Feb. '12 >>  MPEC 2012-C12 - "06:06 UT" - Daily Orbit Update


MPEC 2012-C11 - "01:44 UT" - 2012 CA


MPEC 2012-C10 - "01:00 UT" - 2012 BE124


MPEC 2012-C09 - "00:43 UT" - 2012 BD124


MPEC 2012-C08 - "00:41 UT" - 2012 BC124


MPEC 2012-C07 - "00:39 UT" - 2012 BB124

Observers  on 2 February '12

A total of 31 observers appeared in this day's MPECs.

CodeObserver / observatory
J94Abbeydale Obs. in England, 1 in MPEC 2012-C12 -- 21088
B03Alter Satzberg Obs. in Austria, 1 in MPEC 2012-C08 -- 2012 BC124
H21Astronomical Research Obs. Westfield in Illinois, 1 in MPEC 2012-C07 -- 2012 BB124
J51Atlante Obs. in the Canary Islands, 1 in MPEC 2012-C12 -- 32906
A74Bergen-Enkheim Obs. in Germany, 1 in MPEC 2012-C12 -- 2000 SV20
300Bisei Spaceguard Center in Japan, 3 in MPECs 2012-C08, 2012-C09 & 2012-C10 -- 2012 BE124, 2012 BD124, 2012 BC124
703Catalina Sky Survey (CSS) in Arizona, 12 in MPECs 2012-C07, 2012-C08, 2012-C11, 2012-C12 & 2012-C14 -- 2012 CA, 2012 BO77, 2012 BD27, 2012 BC124, 2012 BB124, P/2011 VJ5, 2006 VY13, 66251, 36236, 152941, 141765, 137925
8073program code 3 via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 6 in MPECs 2012-C12 & 2012-C14 -- 2012 BV61, 2012 BN11, 2012 BB77, 2012 AY, 2011 YM63, P/2011 VJ5
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2012-C07 -- 2012 BB124
970Chelmsford Obs. in England, 1 in MPEC 2012-C08 -- 2012 BC124
595Farra d'Isonzo Obs. in Italy, 2 in MPECs 2012-C07 & 2012-C08 -- 2012 BC124, 2012 BB124
F651UKAPP in Northern Ireland via Faulkes Telescope North in Hawaii, 2 in MPECs 2012-C12 & 2012-C14 -- P/2011 VJ5, 2011 CP4
651Grasslands Obs. in Arizona, 1 in MPEC 2012-C07 -- 2012 BB124
J95Great Shefford Obs. in England, 7 in MPECs 2012-C07, 2012-C08, 2012-C09, 2012-C10, 2012-C11, 2012-C12 & 2012-C13 -- 2012 CD, 2012 CA, 2012 BJ86, 2012 BE124, 2012 BD124, 2012 BC124, 2012 BB124
A17Guidestar Obs. in Germany, 2 in MPEC 2012-C12 -- 2012 BJ11, 2012 AA11
355Hadano Obs. in Japan, 1 in MPEC 2012-C08 -- 2012 BC124
695{Tomas Vorobjov in England via Kitt Peak Natl. Obs. in Arizona, 1 in MPEC 2012-C09 -- 2012 BD124
704LINEAR in New Mexico, 7 in MPEC 2012-C12 -- 2011 YM63, 163000, 153951, 137925, 6455, 6050, 3103
C01Lohrmann Obs. in Germany, 11 in MPEC 2012-C12 -- 2011 SL102, 2003 BL1, 32906, 192642, 162186, 153951, 142563, 142348, 141018, 138524, 433
H01Magdalena Ridge Obs. (MRO) in New Mexico, 4 in MPECs 2012-C07, 2012-C08, 2012-C09 & 2012-C10 -- 2012 BE124, 2012 BD124, 2012 BC124, 2012 BB124
900Moriyama Obs. in Japan, 1 in MPEC 2012-C08 -- 2012 BC124
G96Mt. Lemmon Survey (MLS) in Arizona, 12 in MPECs 2012-C07, 2012-C08, 2012-C09, 2012-C10, 2012-C12, 2012-C13 & 2012-C14 -- 2012 CD, 2012 BE124, 2012 BD124, 2012 BC124, 2012 BB14, 2012 BB124, 2012 AW12, P/2011 VJ5, 2003 BK47, 36236, 279744, 257838
F51Pan-STARRS 1 (PS1) in Hawaii, 10 in MPEC 2012-C12 -- 1997 CZ3, 65706, 35396, 310737, 275976, 163000, 142348, 141018, 137802, 6050
J41Raheny Obs. in Ireland, 3 in MPECs 2012-C07, 2012-C08 & 2012-C11 -- 2012 CA, 2012 BC124, 2012 BB124
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2012-C08 -- 2012 BC124
H36Sandlot Obs. in Kansas, 1 in MPEC 2012-C14 -- P/2011 VJ5
510Siegen Obs. in Germany, 1 in MPEC 2012-C08 -- 2012 BC124
691Spacewatch 0.9m telescope in Arizona, 5 in MPEC 2012-C12 -- 2009 CT5, 2003 BK47, 2002 AW, 68063, 152560
291Spacewatch 1.8m telescope in Arizona, 33 in MPEC 2012-C12 -- 2012 BZ76, 2012 BV26, 2012 BN77, 2012 BN11, 2012 BM86, 2012 BL77, 2012 BK11, 2012 BH86, 2012 BE86, 2012 BD77, 2012 BC77, 2012 BB62, 2012 BA35, 2012 AW12, 2011 YB29, 2011 WQ46, 2011 UZ63, 2011 UY275, 2011 UU106, 2011 UU, 2011 UT20, 2011 UT, 2011 UO91, 2011 UN91, 2011 TC4, 2011 SU68, 2011 SJ189, 2011 SE248, 2011 SD173, 2011 RX, 2011 QY11, 2011 QP96, 2011 QH21
I93St. Pardon de Conques Obs. in France, 1 in MPEC 2012-C07 -- 2012 BB124
B18Terskol Obs. in Russia, 1 in MPEC 2012-C14 -- P/2011 VJ5
718Wiggins Obs. in Utah, 1 in MPEC 2012-C08 -- 2012 BC124
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 2 February '12

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 1631 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 BP123JPL Sentry00532058-210083.6e-09-9.71-9.880JPL: "Analysis based on 13 observations spanning .91365 days (2012-Jan-31.31538 to 2012-Feb-01.22903)." Diameter approximately 0.013 km. from mean, weighted H=27.1.
2012 BN123JPL Sentry00532074-211044.5e-09-7.68-8.070JPL: "Analysis based on 10 observations spanning .93800 days (2012-Jan-31.19728 to 2012-Feb-01.13528)." Diameter approximately 0.078 km. from mean, weighted H=23.2.
2012 BM86JPL Sentry1145210227.9e-08-5.64-5.900JPL: "Analysis based on 17 observations spanning 2.7777 days (2012-Jan-29.55767 to 2012-Feb-01.33537)." Diameter approximately 0.150 km. from mean, weighted H=21.8.
2012 BJ86JPL Sentry11452085-210831.1e-06-4.41-4.710JPL: "Analysis based on 31 observations spanning 3.7036 days (2012-Jan-29.10142 to 2012-Feb-01.80504)." Diameter approximately 0.154 km. from mean, weighted H=21.7.

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 2 February '12

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

0204 2/3Grabbed MPEC 2012-C13 - 2012 CD - see above
Grabbed MPEC 2012-C14 - Comet P/2011 VJ5 (Lemmon) - see above
1201Updated Traffic Report
1145Noted that JPL Sentry has updated its 2012 BJ86 risk assessment - see above
Noted that JPL Sentry has updated its 2012 BM86 risk assessment - see above
Grabbed MPEC 2012-C12 - Daily Orbit Update - see above
0208Grabbed MPEC 2012-C10 - 2012 BE124 - see above
Grabbed MPEC 2012-C11 - 2012 CA - see above
0053Noted that JPL Sentry has posted 2012 BN123 as an impact risk - see above
Noted that JPL Sentry has posted 2012 BP123 as an impact risk - see above
Grabbed MPEC 2012-C07 - 2012 BB124 - see above
Grabbed MPEC 2012-C08 - 2012 BC124 - see above
Grabbed MPEC 2012-C09 - 2012 BD124 - see above