Contents  on 30 January '12

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

Resources:

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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 30 January '12

Two objects reported inside ten LD

Two asteroids are reported flying within ten lunar distances (LD) of Earth today. Intruder 2012 BX34 is departing, traveling from 5.00 to 7.11 LD, and 2012 BD14 comes its closest to Earth on this passage, reaching 5.78 LD at 2210 UTC.

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

This report was updated at 2335 UTC with follow-up in today's DOU MPEC for 2012 BA77, 2012 BX34, 2012 BF27, 2012 BD14, and 2012 BO11.


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 30 January '12

The MPC's NEO Confirmation Page has 88 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 88 objects listed. Of these, 57 were "one nighters." So far The Tracking News has counted a total of 119 listings on the NEOCP today.

New MPECs  on 30 January '12

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been eleven MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2012-B109 - "18:34 UT" - 2012 BM86


MPEC 2012-B108 - "18:31 UT" - 2012 BL86


MPEC 2012-B107 - "18:29 UT" - 2012 BK86


MPEC 2012-B106 - "18:26 UT" - 2012 BJ86


MPEC 2012-B105 - "18:23 UT" - 2012 BH86


MPEC 2012-B104 - "18:19 UT" - 2012 BG86


MPEC 2012-B103 - "18:16 UT" - 2012 BF86


MPEC 2012-B102 - "17:01 UT" - 2012 BE86


MPEC 2012-B101 - "16:06 UT" - 1999 AU23


MPEC 2012-B100 - "15:54 UT" - 2012 BX85


<< DOU on 30 Jan. '12 >>  MPEC 2012-B99 - "06:05 UT" - Daily Orbit Update

Observers  on 30 January '12

A total of 29 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 31 in MPECs 2012-B99, 2012-B103, 2012-B104, 2012-B106, 2012-B107 & 2012-B108 -- 2012 BV13, 2012 BU61, 2012 BT61, 2012 BT23, 2012 BS23, 2012 BM77, 2012 BL86, 2012 BK86, 2012 BK11, 2012 BJ86, 2012 BG86, 2012 BF86, 2012 BD14, 2012 BC77, 2012 BB77, 2012 BA77, 2012 AA11, 2011 YX10, 2011 YG28, 2011 YD40, 2011 YA63, 2011 XE1, 2011 WM46, 2011 WL2, 2011 SR69, 2011 QY37, 2011 QF14, 302831, 170502, 163081, 5143
300Bisei Spaceguard Center in Japan, 1 in MPEC 2012-B108 -- 2012 BL86
703Catalina Sky Survey (CSS) in Arizona, 13 in MPECs 2012-B99, 2012-B104 & 2012-B108 -- 2012 BX34, 2012 BL86, 2012 BG86, 2012 AU10, 2011 YL6, 2003 BX33, 2003 BK47, 32906, 29075, 162038, 154555, 144901, 143651
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 5 in MPEC 2012-B99 -- 2012 BZ76, 2012 BM77, 2011 QF14, 2009 AK15, 2005 JA22
448Desert Moon Obs. in New Mexico, 3 in MPEC 2012-B99 -- 2012 BT23, 2012 AC13, 2011 XE
F65%Tim Lister in southern California via Faulkes Telescope North in Hawaii, 3 in MPECs 2012-B102, 2012-B105 & 2012-B109 -- 2012 BM86, 2012 BH86, 2012 BE86
C73Galati Obs. in Romania, 5 in MPEC 2012-B99 -- 2011 WV134, 2008 WZ13, 2005 NJ1, 294739, 20826
651Grasslands Obs. in Arizona, 2 in MPECs 2012-B104 & 2012-B108 -- 2012 BL86, 2012 BG86
J95Great Shefford Obs. in England, 2 in MPECs 2012-B103 & 2012-B104 -- 2012 BG86, 2012 BF86
379Hamamatsu-Yuto Obs. in Japan, 2 in MPEC 2012-B99 -- 2008 WZ13, 1866
H15ISON-NM Obs. in New Mexico, 1 in MPEC 2012-B99 -- 2003 BK47
695{Tomas Vorobjov in England via Kitt Peak Natl. Obs. in Arizona, 1 in MPEC 2012-B103 -- 2012 BF86
704LINEAR in New Mexico, 1 in MPEC 2012-B103 -- 2012 BF86
844Los Molinos Obs. in Uruguay, 2 in MPEC 2012-B99 -- 2012 BT23, 2011 YU62
H01Magdalena Ridge Obs. (MRO) in New Mexico, 9 in MPECs 2012-B99, 2012-B101, 2012-B103, 2012-B104, 2012-B105, 2012-B106, 2012-B107, 2012-B108 & 2012-B109 -- 2012 BM86, 2012 BL86, 2012 BK86, 2012 BJ86, 2012 BH86, 2012 BG86, 2012 BF86, 1999 AU23, 101955
G96Mt. Lemmon Survey (MLS) in Arizona, 7 in MPECs 2012-B99, 2012-B103, 2012-B106 & 2012-B107 -- 2012 BK86, 2012 BJ86, 2012 BF86, 2007 YV56, 310842, 175706, 6050
J93Mt. Tuffley Obs. in England, 1 in MPEC 2012-B99 -- 433
A24New Millennium Obs. in Italy, 22 in MPEC 2012-B99 -- 2011 YV15, 2008 QY, 2003 BL1, 1996 AE2, 85990, 32906, 202435, 163000, 162186, 153951, 143651, 142563, 142348, 141018, 137925, 101873, 9400, 6455, 6050, 3554, 3352, 3103
F51Pan-STARRS 1 (PS1) in Hawaii, 9 in MPECs 2012-B99, 2012-B101, 2012-B102, 2012-B105 & 2012-B109 -- 2012 BR23, 2012 BM86, 2012 BK77, 2012 BH86, 2012 BG14, 2012 BE86, 2012 BB77, 1999 AU23, 168378
H23Pear Tree Obs. in Florida, 1 in MPEC 2012-B99 -- 2011 YV15
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 13 in MPEC 2012-B99 -- 2012 BJ11, 2012 AE1, 2011 XE1, 2011 WV134, 2011 SL102, 2008 WZ13, 2003 BL1, 1996 AE2, 32906, 310442, 143651, 138175, 1620
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2012-B99 -- 2012 BO77
H36Sandlot Obs. in Kansas, 1 in MPEC 2012-B99 -- 162421
645Sloan Digital Sky Survey (SDSS) in New Mexico, 14 in MPEC 2012-B99 -- 2009 RD4, 2008 AB31, 2006 SJ134, 2006 KA40, 2005 LO3, 2005 EZ169, 2002 TH68, 2001 SJ262, 2000 YG4, 66251, 41440, 256004, 143381, 138925
691Spacewatch 0.9m telescope in Arizona, 5 in MPEC 2012-B99 -- 96631, 53319, 27002, 192642, 153951
291Spacewatch 1.8m telescope in Arizona, 15 in MPECs 2012-B99, 2012-B102, 2012-B103 & 2012-B105 -- 2012 BV26, 2012 BO11, 2012 BN77, 2012 BN11, 2012 BH86, 2012 BF86, 2012 BF27, 2012 BE86, 2012 BC77, 2012 BB14, 2012 AT10, 2011 YX10, 2011 YW62, 2011 YQ10, 2010 LR33
I93St. Pardon de Conques Obs. in France, 3 in MPECs 2012-B103, 2012-B104 & 2012-B108 -- 2012 BL86, 2012 BG86, 2012 BF86
2905program code 5 via Vatican Advanced Technology Telescope in Arizona, 1 in MPEC 2012-B100 -- 2012 BX85
I15Wishing Star Obs. in Rhode Island, 6 in MPEC 2012-B99 -- 2012 BT23, 2012 BB2, 2011 YU74, 85839, 24475, 162186
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 30 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 BM86JPL Sentry21252026-2108651.2e-07-5.41-6.290JPL: "Analysis based on 12 observations spanning .89972 days (2012-Jan-29.55767 to 2012-Jan-30.457389)." Diameter approximately 0.142 km. from mean, weighted H=21.9.
2012 BL86JPL Sentry21252057-206122.2e-06-5.22-5.400JPL: "Analysis based on 30 observations spanning .91281 days (2012-Jan-29.34034 to 2012-Jan-30.25315)." Diameter approximately 0.055 km. from mean, weighted H=24.0.
2012 BJ86JPL Sentry21252077-2111131.3e-06-4.43-4.820JPL: "Analysis based on 26 observations spanning 1.0493 days (2012-Jan-29.10142 to 2012-Jan-30.15077)." Diameter approximately 0.150 km. from mean, weighted H=21.7.
2012 BA77JPL Sentry15162015-2103701.7e-05-4.96-5.530JPL: "Analysis based on 9 observations spanning 4.9442 days (2012-Jan-24.36724 to 2012-Jan-29.311453)." Diameter approximately 0.022 km. from mean, weighted H=25.9.
NEODyS15162025-2072241.24e-05-4.97-5.360NEODyS: "Based on 9 optical observations (of which 0 are rejected as outliers) from 2012-01-24.368 to 2012-01-29.312."
2012 BU61JPL Sentry15162031-2110208.0e-07-3.96-4.380JPL: "Analysis based on 26 observations spanning 3.0686 days (2012-Jan-26.0941 to 2012-Jan-29.162714)." Diameter approximately 0.211 km. from mean, weighted H=21.0.
NEODyS15162031-209099.05e-07-4.00-4.180NEODyS: "Based on 26 optical observations (of which 0 are rejected as outliers) from 2012-01-26.095 to 2012-01-29.163."
2012 BO11JPL Sentry1516209315.7e-08-7.94-7.940JPL: "Analysis based on 42 observations spanning 10.003 days (2012-Jan-19.49216 to 2012-Jan-29.49508)." Diameter approximately 0.024 km. from mean, weighted H=25.8.
2011 WL2JPL Sentry1516209811.0e-06-4.19-4.190JPL: "Analysis based on 209 observations spanning 73.800 days (2011-Nov-16.31883 to 2012-Jan-29.11929)." Diameter approximately 0.240 km. from mean, weighted H=20.7.

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 30 January '12

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

2335Posted Traffic Report
2125Noted that JPL Sentry has posted 2012 BJ86 as an impact risk - see above
Noted that JPL Sentry has posted 2012 BL86 as an impact risk - see above
Noted that JPL Sentry has posted 2012 BM86 as an impact risk - see above
1925Grabbed MPEC 2012-B103 - 2012 BF86 - see above
Grabbed MPEC 2012-B104 - 2012 BG86 - see above
Grabbed MPEC 2012-B105 - 2012 BH86 - see above
Grabbed MPEC 2012-B106 - 2012 BJ86 - see above
Grabbed MPEC 2012-B107 - 2012 BK86 - see above
Grabbed MPEC 2012-B108 - 2012 BL86 - see above
Grabbed MPEC 2012-B109 - 2012 BM86 - see above
1720Grabbed MPEC 2012-B100 - 2012 BX85 - see above
Grabbed MPEC 2012-B101 - 1999 AU23 - see above
Grabbed MPEC 2012-B102 - 2012 BE86 - see above
1516Noted that JPL Sentry has updated its 2011 WL2 risk assessment - see above
Noted that JPL Sentry has updated its 2012 BA77 risk assessment - see above
Noted that NEODyS has updated its 2012 BA77 risk assessment - see above
Noted that JPL Sentry has updated its 2012 BO11 risk assessment - see above
Noted that JPL Sentry has updated its 2012 BU61 risk assessment - see above
Noted that NEODyS has updated its 2012 BU61 risk assessment - see above
Grabbed MPEC 2012-B99 - Daily Orbit Update - see above