Contents  on 27 January '12

Note: These A/CC news pages will update less often and less regularly than usual through Sunday, January 29th, 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 27 January '12

Four objects reported inside ten LD

Four rocky visitors are reported traveling within ten lunar distances (LD) of Earth today. Intruder 2012 BX34 is inside one LD of both Earth and Moon. Risk-listed 2012 BW13 exits Earth's Hill sphere. Further away, 2012 BS1 is departing, traveling from 6.90 to 8.71 LD, and 2012 BD14 from 8.57 to 7.46 LD.

Next up, radar target 2011 CP4 arrives inside ten LD on February 22nd.

This report was updated at 2348 UTC with new discovery 2012 BV61 (MPEC) and, earlier, follow-up for 2012 BX34 in MPECs DOU and 2012-B65 plus radar, and follow-up in today's DOU MPEC for 2012 BD14, 2012 BW13, 2012 BO11, 2012 BU1, and 2011 YH40.. This report was previously updated at 0630 and 1414 UTC.


Notes: Ten LD has no astronomical significance but is a useful reporting boundary. Earth's Hill sphere (of gravitational influence) has a radius estimated at about 3.89 LD. Distances are interpreted by A/CC from JPL Horizons data. See also today's timeline plus current additional details, sky chart, and ephemerides.

Radar Astrometry  on 27 January '12

Radar observation of two objects

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:


Data update noted at 0506 UTC when the database was dated 26 Jan.


Data update noted at 1412 UTC when the database was dated 27 Jan.



Photometry is needed for upcoming radar targets and also some astrometry. See Arecibo and Goldstone schedules.

NEOCP Activity  on 27 January '12

The MPC's NEO Confirmation Page has 53 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 53 objects listed. Of these, 35 were "one nighters." So far The Tracking News has counted a total of 110 listings on the NEOCP today.

New MPECs  on 27 January '12

Minor Planet Electronic Circulars

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


MPEC 2012-B77 - "21:16 UT" - 2012 BC62


MPEC 2012-B76 - "21:13 UT" - 2012 BB62


MPEC 2012-B75 - "21:11 UT" - 2012 BA62


MPEC 2012-B74 - "21:08 UT" - 2012 BZ61


MPEC 2012-B73 - "21:06 UT" - 2012 BY61


MPEC 2012-B72 - "20:23 UT" - 2012 BW61


MPEC 2012-B71 - "20:17 UT" - 2012 BV61


MPEC 2012-B70 - "20:15 UT" - 2012 BU61


MPEC 2012-B69 - "19:48 UT" - 2012 BT61


MPEC 2012-B68 - "16:24 UT" - 2012 BR61


<< DOU on 27 Jan. '12 >>  MPEC 2012-B67 - "06:05 UT" - Daily Orbit Update


MPEC 2012-B66 - "04:36 UT" - Comet P/2012 B1 (Panstarrs)


MPEC 2012-B65 - "01:30 UT" - 2012 BX34

Observers  on 27 January '12

A total of 40 observers appear in today's MPECs.

CodeObserver / observatory
B37Ametlla del Valles Obs. in Spain, 1 in MPEC 2012-B67 -- 138175
J16An Carraig Obs. in Northern Ireland, 1 in MPEC 2012-B65 -- 2012 BX34
H21Astronomical Research Obs. Westfield in Illinois, 16 in MPEC 2012-B67 -- 2012 BX13, 2012 BX1, 2012 BT23, 2012 BJ11, 2012 BG14, 2012 BD14, 2012 BB2, 2012 BA14, 2012 AF3, 2012 AE1, 2012 AC13, 2011 YW62, 2011 YV15, 2011 YT62, 2011 YL6, 29075
I47Auger Obs. in Argentina, 1 in MPEC 2012-B67 -- 2012 BT23
C77Bernezzo Obs. in Italy, 1 in MPEC 2012-B67 -- 1627
B66Casasco Obs. in Italy, 10 in MPEC 2012-B67 -- 310842, 175706, 7358, 7092, 5653, 4183, 2201, 1943, 1866, 1620
160Castelmartini Obs. in Italy, 4 in MPEC 2012-B67 -- 2011 XE1, 2011 WV134, 209924, 202435
703Catalina Sky Survey (CSS) in Arizona, 19 in MPECs 2012-B67 & 2012-B71 -- 2012 BX13, 2012 BV61, 2006 WU, 2005 NJ1, 42286, 311044, 310842, 262623, 237805, 174806, 163696, 138127, 137802, 136923, 11066, 9400, 8567, 3691, 1866
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 9 in MPEC 2012-B67 -- 2012 BV26, 2012 BV13, 2012 BT23, 2012 BN11, 2012 BG11, 2012 BE27, 2012 BA14, 2011 YH40, 277617
970Chelmsford Obs. in England, 1 in MPEC 2012-B65 -- 2012 BX34
106Crni Vrh Obs. in Slovenia, 2 in MPEC 2012-B67 -- 2009 CT5, 311044
448Desert Moon Obs. in New Mexico, 3 in MPEC 2012-B67 -- 90147, 162980, 141056
G48Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) in New Mexico, 2 in MPEC 2012-B67 -- 2012 BT23, 141018
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2012-B66 -- P/2012 B1
F65%Tim Lister in southern California via Faulkes Telescope North in Hawaii, 1 in MPEC 2012-B69 -- 2012 BT61
203GiaGa Obs. in Italy, 4 in MPEC 2012-B67 -- 2012 AC13, 2012 AA11, 310442, 141018
252Goldstone DSS-13 34m antenna in southern California, 1 in radar -- 2012 BX34
253Goldstone DSS-14 70m antenna in southern California, 2 in radar -- 2012 BX34, 310842
J95Great Shefford Obs. in England, 3 in MPECs 2012-B67, 2012-B70 & 2012-B75 -- 2012 BX34, 2012 BU61, 2012 BA62
379Hamamatsu-Yuto Obs. in Japan, 4 in MPEC 2012-B67 -- 2011 SL102, 2008 WZ13, 209924, 1620
695{Tomas Vorobjov in England via Kitt Peak Natl. Obs. (KPNO) in Arizona, 2 in MPECs 2012-B66 & 2012-B71 -- 2012 BV61, P/2012 B1
704LINEAR in New Mexico, 11 in MPEC 2012-B67 -- 2011 YM63, 66959, 311044, 310842, 275792, 262623, 21088, 10145, 6050, 3352, 3103
D54MASTER-II Obs. Blagoveshchensk in Russia, 1 in MPEC 2012-B67 -- 2011 YP10
C41MASTER-II Obs. Kislovodsk in Russia, 2 in MPEC 2012-B67 -- 141765, 3554
H01Magdalena Ridge Obs. (MRO) in New Mexico, 8 in MPECs 2012-B69, 2012-B70, 2012-B71, 2012-B73, 2012-B74, 2012-B75, 2012-B76 & 2012-B77 -- 2012 BZ61, 2012 BY61, 2012 BV61, 2012 BU61, 2012 BT61, 2012 BC62, 2012 BB62, 2012 BA62
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2012-B67 -- 2012 AW12
B67Mirasteilas Obs. in Switzerland, 2 in MPEC 2012-B67 -- 2011 YU74, 2008 AB31
900Moriyama Obs. in Japan, 1 in MPEC 2012-B65 -- 2012 BX34
G96Mt. Lemmon Survey (MLS) in Arizona, 12 in MPECs 2012-B67, 2012-B72, 2012-B73, 2012-B74, 2012-B75, 2012-B76 & 2012-B77 -- 2012 BZ61, 2012 BY61, 2012 BW61, 2012 BO11, 2012 BF14, 2012 BC62, 2012 BB62, 2012 BA62, 2012 AC11, 2011 OL51, 310737, 243147
608NEAT's USAF Haleakala telescope in Hawaii, 1 in MPEC 2012-B67 -- 433
A24New Millennium Obs. in Italy, 28 in MPECs 2012-B65 & 2012-B67 -- 2012 BX34, 2011 XO3, 2011 WV134, 2008 WZ13, 2008 GE1, 2005 NJ1, 99799, 90147, 85839, 36284, 294739, 29075, 289315, 24475, 21088, 209924, 20826, 202435, 175706, 163696, 137805, 10145, 8567, 7358, 3200, 1943, 1866, 1620
F51Pan-STARRS 1 (PS1) in Hawaii, 11 in MPECs 2012-B66, 2012-B67, 2012-B68 & 2012-B69 -- 2012 BT61, 2012 BR61, P/2012 B1, 2012 AC13, 2011 YG28, 2008 GE1, 2008 AB31, 99799, 138911, 138013, 2329
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 3 in MPECs 2012-B66 & 2012-B67 -- 2012 BW13, 2012 BD14, P/2012 B1
J41Raheny Obs. in Ireland, 1 in MPEC 2012-B65 -- 2012 BX34
I20Rio Cuarto Obs. in Argentina, 3 in MPEC 2012-B67 -- 2012 BT23, 2011 YU62, 2011 WV134
461SZTE Asteroid Program in Hungary, 1 in MPEC 2012-B66 -- P/2012 B1
J84South Obs. in England, 2 in MPEC 2012-B67 -- 2012 BX34, 2012 BD14
691Spacewatch 0.9m telescope in Arizona, 11 in MPECs 2012-B67, 2012-B68 & 2012-B70 -- 2012 BU61, 2012 BR61, 2012 AC13, 2011 YM63, 2011 GD60, 2008 AB31, 96631, 53319, 31346, 27002, 152667
291Spacewatch 1.8m telescope in Arizona, 26 in MPECs 2012-B66, 2012-B67, 2012-B68, 2012-B69 & 2012-B70 -- 2012 BU61, 2012 BU1, 2012 BT61, 2012 BS23, 2012 BR61, 2012 BO11, 2012 BN11, 2012 BJ14, 2012 BH14, 2012 BF11, 2012 BE27, 2012 BE14, P/2012 B1, 2012 AW, 2012 AO10, 2012 AM10, 2012 AD3, 2012 AA3, 2011 YS62, 2011 YH28, 2011 YC29, 2011 WL69, 2010 SO16, 2010 LN14, 2010 FQ, 2005 CZ36
A48Verona Obs. in Italy, 3 in MPEC 2012-B67 -- 2012 BX13, 2012 BJ11, 2012 BD27
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 27 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 BU61JPL Sentry23212017-21111072.8e-07-4.41-5.510JPL: "Analysis based on 20 observations spanning 1.0167 days (2012-Jan-26.0941 to 2012-Jan-27.11079)." Diameter approximately 0.212 km. from mean, weighted H=21.0.
2012 BJ14JPL Sentry14122077-211124.2e-08-7.05-7.100JPL: "Analysis based on 27 observations spanning 4.8981 days (2012-Jan-20.51304 to 2012-Jan-25.41115)." Diameter approximately 0.044 km. from mean, weighted H=24.4.
NEODyS1412R E M O V E D-
2012 BW13JPL Sentry14122072-211173.5e-06-6.78-7.040JPL: "Analysis based on 31 observations spanning 5.6870 days (2012-Jan-19.20743 to 2012-Jan-24.89438)." Diameter approximately 0.012 km. from mean, weighted H=27.2.
NEODyS14122072-208424.13e-08-8.57-8.840NEODyS: "Based on 31 optical observations (of which 1 are rejected as outliers) from 2012-01-19.208 to 2012-01-24.895."
2012 BO11JPL Sentry1412209315.5e-08-7.96-7.960JPL: "Analysis based on 33 observations spanning 7.0280 days (2012-Jan-19.49216 to 2012-Jan-26.52018)." Diameter approximately 0.024 km. from mean, weighted H=25.8.
NEODyS1412R E M O V E D-
2012 BU1JPL Sentry14122071-2112231.3e-04-5.53-6.040JPL: "Analysis based on 31 observations spanning 7.1126 days (2012-Jan-18.32077 to 2012-Jan-25.43338)." Diameter approximately 0.010 km. from mean, weighted H=27.7.
NEODyS14122068-209075.19e-06-6.84-6.860NEODyS: "Based on 31 optical observations (of which 1 are rejected as outliers) from 2012-01-18.322 to 2012-01-25.434."

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 '12

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

2348Updated Traffic Report
2321Noted that JPL Sentry has posted 2012 BU61 as an impact risk - see above
Grabbed MPEC 2012-B74 - 2012 BZ61 - see above
Grabbed MPEC 2012-B75 - 2012 BA62 - see above
Grabbed MPEC 2012-B76 - 2012 BB62 - see above
Grabbed MPEC 2012-B77 - 2012 BC62 - see above
2109Grabbed MPEC 2012-B73 - 2012 BY61 - see above
2040Grabbed MPEC 2012-B70 - 2012 BU61 - see above
Grabbed MPEC 2012-B71 - 2012 BV61 - see above
Grabbed MPEC 2012-B72 - 2012 BW61 - see above
2011Grabbed MPEC 2012-B68 - 2012 BR61 - see above
Grabbed MPEC 2012-B69 - 2012 BT61 - see above
1412Noted that JPL Sentry has updated its 2012 BJ14 risk assessment - see above
Noted that NEODyS has removed 2012 BJ14 as an impact risk - see above
Noted that JPL Sentry has reposted 2012 BO11 as an impact risk - see above
Noted that NEODyS has removed 2012 BO11 as an impact risk - see above
Noted that JPL Sentry has updated its 2012 BU1 risk assessment - see above
Noted that NEODyS has updated its 2012 BU1 risk assessment - see above
Noted that JPL Sentry has updated its 2012 BW13 risk assessment - see above
Noted that NEODyS has updated its 2012 BW13 risk assessment - see above
Grabbed MPEC 2012-B67 - Daily Orbit Update - see above
Noted Radar Astrometry database update - see above
0630Grabbed MPEC 2012-B66 - Comet P/2012 B1 (Panstarrs) - see above
0506Grabbed MPEC 2012-B65 - 2012 BX34 - see above
Noted Radar Astrometry database update - see above