Contents  on 15 January '10

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 15 January '10

The MPC's NEO Confirmation Page has 3 listings: 1 new, 2 updated

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

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

New MPECs  on 15 January '10

Minor Planet Electronic Circulars

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


MPEC 2010-A85 - "23:21 UT" - Comet P/2010 A3 (Hill)


MPEC 2010-A84 - "22:24 UT" - 2010 AO60


MPEC 2010-A83 - "19:04 UT" - 2010 AN60


MPEC 2010-A82 - "18:54 UT" - 2010 AM60


MPEC 2010-A81 - "18:50 UT" - 2010 AL60


MPEC 2010-A80 - "13:22 UT" - 2009 BT5


<< DOU on 15 Jan. '10 >>  MPEC 2010-A79 - "07:11 UT" - Daily Orbit Update


MPEC 2010-A78 - "03:01 UT" - Comet P/2010 A2 (LINEAR)


MPEC 2010-A77 - "02:55 UT" - Comet P/2010 A1 (Hill)

Observers  on 15 January '10

A total of 29 observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 10 in MPEC 2010-A79 -- 2010 AL2, 2010 AL, 2010 AH30, 2010 AF40, 2010 AE30, 2010 AE3, 2009 XR2, 2009 WZ104, 2009 WM139, 2009 UK
703Catalina Sky Survey (CSS) in Arizona, 3 in MPECs 2010-A82, 2010-A83 & 2010-A84 -- 2010 AO60, 2010 AN60, 2010 AM60
A77Chante-Perdrix Obs. in France, 3 in MPECs 2010-A77, 2010-A78 & 2010-A85 -- P/2010 A3, P/2010 A2, P/2010 A1
J01Cielo Profundo Obs. in Spain, 1 in MPEC 2010-A78 -- P/2010 A2
448Desert Moon Obs. in New Mexico, 1 in MPEC 2010-A79 -- 2010 AL30
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2010-A84 -- 2010 AO60
372Geisei Obs. in Japan, 2 in MPECs 2010-A78 & 2010-A85 -- P/2010 A3, P/2010 A2
735George Obs. in Texas, 1 in MPEC 2010-A79 -- 1985 WA
379Hamamatsu-Yuto Obs. in Japan, 1 in MPEC 2010-A79 -- 2007 MK13
704LINEAR in New Mexico, 1 in MPEC 2010-A79 -- 1685
J75La Sagra Obs. in Spain, 1 in MPEC 2010-A85 -- P/2010 A3
809La Silla in Chile, 1 in MPEC 2010-A78 -- P/2010 A2
H01Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2010-A78 -- P/2010 A2
B82Maidbronn Obs. in Germany, 2 in MPECs 2010-A77 & 2010-A78 -- P/2010 A2, P/2010 A1
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-A80 -- 2009 BT5
B67Mirasteilas Obs. in Switzerland, 1 in MPEC 2010-A79 -- 2009 WE253
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPECs 2010-A81 & 2010-A83 -- 2010 AN60, 2010 AL60
D92Osaki Obs. in Japan, 1 in MPEC 2010-A85 -- P/2010 A3
H06RAS Obs. Mayhill in New Mexico, 2 in MPECs 2010-A78 & 2010-A85 -- P/2010 A3, P/2010 A2
I20Rio Cuarto Obs. in Argentina, 6 in MPEC 2010-A79 -- 2001 BE10, 86067, 85818, 161989, 152742, 137084
854Sabino Canyon Obs. in Arizona, 3 in MPECs 2010-A81, 2010-A82 & 2010-A83 -- 2010 AN60, 2010 AM60, 2010 AL60
H36Sandlot Obs. in Kansas, 4 in MPECs 2010-A79, 2010-A82 & 2010-A83 -- 2010 AN60, 2010 AM60, 2010 AJ30, 2010 AH30
D93Sendai Obs. in Japan, 2 in MPECs 2010-A77 & 2010-A85 -- P/2010 A3, P/2010 A1
B40Skylive Obs. in Italy, 1 in MPEC 2010-A85 -- P/2010 A3
071Smolyan Obs. in Bulgaria, 5 in MPEC 2010-A79 -- 2009 XR2, 2009 XD, 2009 WZ104, 2009 NA, 2006 KZ37
691Spacewatch 0.9m telescope in Arizona, 10 in MPEC 2010-A79 -- 2010 AB3, 2009 WK6, 2008 BS2, 2007 DB56, 2003 BA21, 2000 OG8, 39572, 23606, 164216, 152679
291Spacewatch 1.8m telescope in Arizona, 11 in MPECs 2010-A78, 2010-A79 & 2010-A81 -- 2010 AR1, 2010 AL60, 2010 AL, 2010 AK, 2010 AJ, 2010 AH30, 2010 AF40, 2010 AE, P/2010 A2, 2009 XV, 2003 BH
926Tenagra II Obs. in Arizona, 7 in MPECs 2010-A79, 2010-A82 & 2010-A83 -- 2010 AN60, 2010 AM60, 2010 AK2, 2010 AH30, 2009 XO, 2009 XH8, 2005 FN4
H10Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2010-A77 -- P/2010 A1
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 15 January '10

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 impact solutions beyond 100 years for a few objects.
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
2010 AF40NEODyS1502R E M O V E D-
JPL Sentry1502R E M O V E DJPL: Risk listing removed at 1056 UTC.
2009 XOJPL Sentry15022038-208123.1e-07-4.18-4.250JPL: "Analysis based on 217 observations spanning 36.320 days (2009-Dec-09.152 to 2010-Jan-14.47163)." Diameter approximately 0.270 km. from mean, weighted H=20.5.
NEODyS1502203812.17e-07-4.25-4.250NEODyS: "Based on 217 optical observations (of which 0 are rejected as outliers) from 2009/12/09.153 to 2010/01/14.472."

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 15 January '10

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

2358Grabbed MPEC 2010-A85 - Comet P/2010 A3 (Hill) - see above
2305Grabbed MPEC 2010-A84 - 2010 AO60 - see above
2023Grabbed MPEC 2010-A83 - 2010 AN60 - see above
1902Grabbed MPEC 2010-A81 - 2010 AL60 - see above
Grabbed MPEC 2010-A82 - 2010 AM60 - see above
1502Noted that JPL Sentry has updated its 2009 XO risk assessment - see above
Noted that NEODyS has updated its 2009 XO risk assessment - see above
Noted that JPL Sentry has removed 2010 AF40 as an impact risk - see above
Noted that NEODyS has removed 2010 AF40 as an impact risk - see above
Grabbed MPEC 2010-A79 - Daily Orbit Update - see above
Grabbed MPEC 2010-A80 - 2009 BT5 - see above
0342Grabbed MPEC 2010-A77 - Comet P/2010 A1 (Hill) - see above
Grabbed MPEC 2010-A78 - Comet P/2010 A2 (LINEAR) - see above