Contents  on 26 January '09

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 26 January '09

The MPC's NEO Confirmation Page has 5 listings: 1 new, 4 updated

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

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

New MPECs  on 26 January '09

Minor Planet Electronic Circulars

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


MPEC 2009-B59 - "23:42 UT" - 2009 BH11


MPEC 2009-B58 - "23:38 UT" - 2009 BG11


MPEC 2009-B57 - "17:23 UT" - 2009 BD11


MPEC 2009-B56 - "17:19 UT" - 2009 BC11


MPEC 2009-B55 - "17:16 UT" - 2009 BA11


MPEC 2009-B54 - "17:09 UT" - 2009 BB11


<< DOU on 26 Jan. '09 >>  MPEC 2009-B53 - "07:05 UT" - Daily Orbit Update

Observers  on 26 January '09

A total of 22 observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 6 in MPEC 2009-B53 -- 2009 BK2, 2008 YM2, 2007 UY1, 2005 SN25, 2005 PY16, 2005 NE7
703Catalina Sky Survey (CSS) in Arizona, 9 in MPECs 2009-B53, 2009-B54, 2009-B55 & 2009-B56 -- 2009 BC11, 2009 BB11, 2009 BA11, 68350, 22771, 152889, 10302, 7480, 6050
448Desert Moon Obs. in New Mexico, 7 in MPEC 2009-B53 -- 2009 BG, 2009 AM, 2009 AH16, 2008 YR27, 2008 YR2, 2005 SG19, 2000 OM
151Eschenberg Obs. in Switzerland, 4 in MPEC 2009-B53 -- 2008 SQ1, 2008 QT3, 2005 SN25, 2003 XB22
B21Gaisberg Obs. in Austria, 1 in MPEC 2009-B54 -- 2009 BB11
J95Great Shefford Obs. in England, 3 in MPECs 2009-B53, 2009-B58 & 2009-B59 -- 2009 BH11, 2009 BG11, 2009 BD
E16Grove Creek Obs. in New South Wales, 1 in MPEC 2009-B53 -- 2009 AD16
A17Guidestar Obs. in Germany, 3 in MPECs 2009-B53 & 2009-B55 -- 2009 BW2, 2009 BA11, 2008 YR27
379Hamamatsu-Yuto Obs. in Japan, 4 in MPEC 2009-B53 -- 2009 BM2, 2008 QT3, 2008 EV5, 2006 AS2
B15Inastars Obs. in Germany, 1 in MPEC 2009-B53 -- 1999 CW8
704LINEAR in New Mexico, 14 in MPECs 2009-B53, 2009-B58 & 2009-B59 -- 2009 BP5, 2009 BH11, 2009 BG11, 2008 YR27, 2008 QT3, 2007 UY1, 36236, 162004, 142348, 12711, 111253, 7822, 6050, 3199
H01Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2009-B53 -- 2008 YC3
B67Mirasteilas Obs. in Switzerland, 4 in MPEC 2009-B53 -- 2008 YV148, 2006 AS2, 2001 OE84, 3122
G96Mt. Lemmon Survey (MLS) in Arizona, 4 in MPECs 2009-B54, 2009-B55, 2009-B56 & 2009-B57 -- 2009 BD11, 2009 BC11, 2009 BB11, 2009 BA11
A13Naef Obs. in Switzerland, 4 in MPEC 2009-B53 -- 2006 AS2, 2001 WT1, 141765, 111253
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 9 in MPEC 2009-B53 -- 2009 AD16, 2008 XE3, 2008 SQ1, 2008 QT3, 2008 EV5, 2006 AS2, 2003 XB22, 2002 AC5, 2001 WT1
J17Ragdon Obs. in England, 1 in MPEC 2009-B53 -- 1863
204Schiaparelli Obs. in Italy, 1 in MPEC 2009-B53 -- 2009 BH2
E12Siding Spring Survey in New South Wales, 1 in MPEC 2009-B53 -- 2009 AM15
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2009-B53 -- 3122
291Spacewatch 1.8m telescope in Arizona, 16 in MPEC 2009-B53 -- 2009 BT5, 2009 BS5, 2009 BR5, 2009 BQ5, 2009 BP5, 2009 BK2, 2009 BE2, 2009 AL15, 2008 YT30, 2008 YA29, 2006 YN, 2006 OD7, 2006 KT1, 2002 JY8, 2001 QG96, 2001 FE90
198Wildberg Obs. in Germany, 1 in MPEC 2009-B56 -- 2009 BC11
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 26 January '09

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2358 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. Beginning Jan. 22nd, both are also posting some objects with impact solutions beyond 100 years.
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
2009 BR5JPL Sentry14252025-2108362.7e-06-4.04-4.800JPL: "Analysis based on 15 observations spanning 4.8517 days (2009-Jan-20.45513 to 2009-Jan-25.30679)." Diameter approximately 0.122 km. from mean, weighted H=22.2.
NEODyS14252025-2081492.74e-06-4.04-4.820NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2009/01/20.456 to 2009/01/25.308."
2009 BP5JPL Sentry1425R E M O V E DJPL: Risk listing removed at 0952 UTC.
NEODyS1425R E M O V E D-
2009 BDJPL Sentry14252060-210796.5e-04-5.11-5.290JPL: "Analysis based on 118 observations spanning 9.7514 days (2009-Jan-16.27641 to 2009-Jan-26.027773)." Diameter approximately 0.007 km. from mean, weighted H=28.3.
NEODyS14252060-2088176.55e-04-5.11-5.290NEODyS: "Based on 119 optical observations (of which 1 are rejected as outliers) from 2009/01/16.277 to 2009/01/26.029."
2008 YC3JPL Sentry14252088-210642.0e-08-8.26-8.340JPL: "Analysis based on 34 observations spanning 29.911 days (2008-Dec-22.25277 to 2009-Jan-21.16386)." Diameter approximately 0.029 km. from mean, weighted H=25.4.

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 26 January '09

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

2358Grabbed MPEC 2009-B58 - 2009 BG11 - see above
Grabbed MPEC 2009-B59 - 2009 BH11 - see above
1730Grabbed MPEC 2009-B54 - 2009 BB11 - see above
Grabbed MPEC 2009-B55 - 2009 BA11 - see above
Grabbed MPEC 2009-B56 - 2009 BC11 - see above
Grabbed MPEC 2009-B57 - 2009 BD11 - see above
1425Noted that JPL Sentry has updated its 2008 YC3 risk assessment - see above
Noted that JPL Sentry has updated its 2009 BD risk assessment - see above
Noted that NEODyS has updated its 2009 BD risk assessment - see above
Noted that JPL Sentry has removed 2009 BP5 as an impact risk - see above
Noted that NEODyS has removed 2009 BP5 as an impact risk - see above
Noted that JPL Sentry has updated its 2009 BR5 risk assessment - see above
Noted that NEODyS has updated its 2009 BR5 risk assessment - see above
Grabbed MPEC 2009-B53 - Daily Orbit Update - see above