Contents  on 18 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 18 January '09

The MPC's NEO Confirmation Page has 18 listings: 4 new, 14 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had four new and fourteen updated listings. Of these, seven were "one nighters." So far The Tracking News has counted a total of 27 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 18 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.


<< DOU on 18 Jan. '09 >>  MPEC 2009-B18 - "07:05 UT" - Daily Orbit Update


MPEC 2009-B17 - "02:00 UT" - 2009 BG


MPEC 2009-B16 - "01:57 UT" - 2009 BF


MPEC 2009-B15 - "01:54 UT" - 2009 BE


MPEC 2009-B14 - "01:51 UT" - 2009 BD


MPEC 2009-B13 - "01:48 UT" - 2009 BC


MPEC 2009-B12 - "01:45 UT" - 2009 BB

Observers  on 18 January '09

A total of 24 observing facilities appear in today's MPECs.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 1 in MPEC 2009-B12 -- 2009 BB
H55Astronomical Research Obs. (ARO) in Illinois, 6 in MPECs 2009-B12, 2009-B13, 2009-B14 & 2009-B18 -- 2009 BD, 2009 BC, 2009 BB, 2008 RT26, 2008 MN1, 1999 AQ10
493Calar Alto Obs. in Spain, 6 in MPECs 2009-B12, 2009-B13, 2009-B14, 2009-B15, 2009-B16, 2009-B17 & 2009-B18 -- 2009 BG, 2009 BF, 2009 BE, 2009 BD, 2009 BC, 2009 BB
703Catalina Sky Survey (CSS) in Arizona, 2 in MPEC 2009-B18 -- 2008 UC, 2005 YS
448Desert Moon Obs. in New Mexico, 7 in MPEC 2009-B18 -- 2009 BB, 2009 AH16, 2009 AG16, 2009 AF16, 2008 VU4, 2008 SX245, 2004 KT
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2009-B14 -- 2009 BD
379Hamamatsu-Yuto Obs. in Japan, 4 in MPEC 2009-B18 -- 2009 AE16, 2009 AD16, 2008 QT3, 2008 EV5
704LINEAR in New Mexico, 27 in MPECs 2009-B12, 2009-B17 & 2009-B18 -- 2009 BG, 2009 BE, 2009 BD, 2009 BB, 2009 AM, 2009 AH16, 2009 AF16, 2009 AE16, 2009 AD16, 2008 UC, 2008 SQ1, 2008 MB5, 2006 AS2, 2005 WS55, 2005 TZ51, 2002 VY94, 2000 AE6, 1999 AQ10, 52768, 36236, 200840, 200754, 162361, 141052, 137925, 4179, 2368
H01Magdalena Ridge Obs. (MRO) in New Mexico, 6 in MPECs 2009-B13, 2009-B14, 2009-B15, 2009-B16, 2009-B17 & 2009-B18 -- 2009 BG, 2009 BF, 2009 BE, 2009 BD, 2009 BC, 2008 YC3
B67Mirasteilas Obs. in Switzerland, 1 in MPEC 2009-B18 -- 141052
G96Mt. Lemmon Survey (MLS) in Arizona, 4 in MPECs 2009-B13, 2009-B14, 2009-B15 & 2009-B16 -- 2009 BF, 2009 BE, 2009 BD, 2009 BC
B49Paus Obs. in Spain, 1 in MPEC 2009-B18 -- 2009 AD16
H45Petit Jean Mtn. South Obs. in Arkansas, 1 in MPEC 2009-B18 -- 2008 EA32
H06%Ernesto Guido in Italy via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2009-B18 -- 2009 AH16
J17Ragdon Obs. in England, 1 in MPEC 2009-B18 -- 142348
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2009-B14 -- 2009 BD
B04Saint-Barthelemy Obs. in Italy, 2 in MPECs 2009-B15 & 2009-B18 -- 2009 BE, 2009 BD
H36Sandlot Obs. in Kansas, 2 in MPECs 2009-B17 & 2009-B18 -- 2009 BG, 2009 BB
204Schiaparelli Obs. in Italy, 2 in MPECs 2009-B12 & 2009-B14 -- 2009 BD, 2009 BB
E12Siding Spring Survey in New South Wales, 1 in MPEC 2009-B14 -- 2009 BD
G68Sierra Stars Obs. in northern California, 1 in MPEC 2009-B18 -- 141765
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2009-B18 -- 198752
291Spacewatch 1.8m telescope in Arizona, 3 in MPEC 2009-B18 -- 2009 AL15, 2008 YJ3, 2006 FD51
G56Walnut Creek Obs. in northern California, 3 in MPECs 2009-B12 & 2009-B18 -- 2009 BB, 2008 YE29, 2008 XE3
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 18 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.
Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090.
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 BEJPL Sentry15572048-2107261.8e-04-4.38-4.660JPL #2 for the day: "Analysis based on 32 observations spanning 1.6458 days (2009-Jan-16.36105 to 2009-Jan-18.00684)." Diameter approximately 0.022 km. from mean, weighted H=26.0.
NEODyS15572047-2086181.63e-04-4.43-4.690NEODyS: "Based on 32 optical observations (of which 0 are rejected as outliers) from 2009/01/16.362 to 2009/01/18.008."
2009 BDJPL Sentry15572023-2070222.6e-04-5.65-6.080JPL #2 for the day: "Analysis based on 56 observations spanning 1.7703 days (2009-Jan-16.27641 to 2009-Jan-18.04668)." Diameter approximately 0.006 km. from mean, weighted H=28.7.
NEODyS15572053-2090673.97e-04-5.50-6.090NEODyS: "Based on 56 optical observations (of which 0 are rejected as outliers) from 2009/01/16.277 to 2009/01/18.047."
2008 YC3JPL Sentry15572088-210688.4e-07-6.67-6.850JPL: "Analysis based on 32 observations spanning 26.862 days (2008-Dec-22.25277 to 2009-Jan-18.11446)." Diameter approximately 0.028 km. from mean, weighted H=25.4.
NEODyS1557R E M O V E D-
2008 TS10NEODyS17332068-208969.12e-06-7.22-7.640NEODyS: "Based on 17 optical observations (of which 0 are rejected as outliers) from 2008/10/08.362 to 2008/10/22.499."

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 18 January '09

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

1733Noted that NEODyS has updated its 2008 TS10 risk assessment - see above
1557Noted that JPL Sentry has updated its 2008 YC3 risk assessment - see above
Noted that NEODyS has removed 2008 YC3 as an impact risk - see above
Noted that JPL Sentry has updated its 2009 BD risk assessment - see above
Noted that NEODyS has posted 2009 BD as an impact risk - see above
Noted that JPL Sentry has updated its 2009 BE risk assessment - see above
Noted that NEODyS has posted 2009 BE as an impact risk - see above
Grabbed MPEC 2009-B18 - Daily Orbit Update - see above
0428Noted that JPL Sentry has posted 2009 BD as an impact risk - see above
0358Noted that JPL Sentry has posted 2009 BE as an impact risk - see above
0228Grabbed MPEC 2009-B17 - 2009 BG - see above
0159Grabbed MPEC 2009-B12 - 2009 BB - see above
Grabbed MPEC 2009-B13 - 2009 BC - see above
Grabbed MPEC 2009-B14 - 2009 BD - see above
Grabbed MPEC 2009-B15 - 2009 BE - see above
Grabbed MPEC 2009-B16 - 2009 BF - see above