Contents  on 26 May '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 May '09

The MPC's NEO Confirmation Page has 7 listings: 3 new, 4 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new and four updated listings. Of these, six were "one nighters." So far The Tracking News has counted a total of fourteen 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 26 May '09

Minor Planet Electronic Circulars

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


MPEC 2009-K52 - "23:40 UT" - 2009 KR4


MPEC 2009-K51 - "23:37 UT" - 2009 KQ4


MPEC 2009-K50 - "21:16 UT" - 2008 CM


MPEC 2009-K49 - "15:07 UT" - Comet C/2009 K2 (Catalina)


MPEC 2009-K48 - "14:56 UT" - Comet P/2009 K1 (Gibbs)


MPEC 2009-K47 - "13:49 UT" - 2009 KO4


MPEC 2009-K46 - "13:44 UT" - 2009 KN4


<< DOU on 26 May '09 >>  MPEC 2009-K45 - "06:08 UT" - Daily Orbit Update

Observers  on 26 May '09

A total of 37 observing facilities appear in today's MPECs.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 2 in MPEC 2009-K45 -- 2009 KV2, 2009 KJ
A44Altschwendt Obs. in Austria, 1 in MPEC 2009-K47 -- 2009 KO4
J51Atlante Obs. in the Canary Islands, 1 in MPEC 2009-K45 -- 2009 JM2
A74Bergen-Enkheim Obs. in Germany, 1 in MPEC 2009-K45 -- 2008 WM64
B96Brixiis Obs. in Belgium, 1 in MPEC 2009-K49 -- C/2009 K2
215Buchloe Obs. in Germany, 1 in MPEC 2009-K48 -- P/2009 K1
B09Capannoli Obs. in Italy, 2 in MPEC 2009-K45 -- 2009 JM2, 212546
703Catalina Sky Survey (CSS) in Arizona, 7 in MPECs 2009-K45, 2009-K48 & 2009-K52 -- 2009 KR4, P/2009 K1, 2009 CR2, 2009 CQ1, 2008 WL60, 39557, 143947
693Catalina Station in Arizona, 2 in MPECs 2009-K47 & 2009-K51 -- 2009 KQ4, 2009 KO4
I21El Condor Obs. in Argentina, 2 in MPEC 2009-K45 -- 2009 KW2, 2009 JM2
J95Great Shefford Obs. in England, 3 in MPECs 2009-K45, 2009-K51 & 2009-K52 -- 2009 KW2, 2009 KR4, 2009 KQ4
E16Grove Creek Obs. in New South Wales, 1 in MPEC 2009-K45 -- 2009 KC3
379Hamamatsu-Yuto Obs. in Japan, 1 in MPEC 2009-K45 -- 2009 JM2
J28Jaen Obs. in Spain, 1 in MPEC 2009-K45 -- 161989
585Kiev Comet Station in the Ukraine, 2 in MPECs 2009-K48 & 2009-K49 -- C/2009 K2, P/2009 K1
J75La Sagra Obs. in Spain, 1 in MPEC 2009-K45 -- 2009 CQ1
H01Magdalena Ridge Obs. (MRO) in New Mexico, 3 in MPECs 2009-K46, 2009-K47 & 2009-K52 -- 2009 KR4, 2009 KO4, 2009 KN4
932McCarthy Obs. in Connecticut, 1 in MPEC 2009-K45 -- 2009 KK
B67Mirasteilas Obs. in Switzerland, 1 in MPEC 2009-K45 -- 3103
118Modra Obs. in Slovakia, 2 in MPECs 2009-K45 & 2009-K49 -- C/2009 K2, 2009 HV44
213Montcabre Obs. in Spain, 1 in MPEC 2009-K49 -- C/2009 K2
G96Mt. Lemmon Survey (MLS) in Arizona, 5 in MPECs 2009-K45, 2009-K47 & 2009-K51 -- 2009 KQ4, 2009 KO4, 2008 WL60, 40329, 137175
A13Naef Obs. in Switzerland, 4 in MPEC 2009-K45 -- 1998 SC15, 162181, 137175, 5620
J47Nazaret Obs. in Spain, 2 in MPECs 2009-K48 & 2009-K49 -- C/2009 K2, P/2009 K1
A53Peschiera del Garda Obs. in Italy, 2 in MPEC 2009-K45 -- 2009 JM2, 85989
H45Petit Jean Mtn. South Obs. in Arkansas, 1 in MPEC 2009-K49 -- C/2009 K2
H36Sandlot Obs. in Kansas, 1 in MPEC 2009-K47 -- 2009 KO4
204Schiaparelli Obs. in Italy, 2 in MPECs 2009-K48 & 2009-K49 -- C/2009 K2, P/2009 K1
D21Shenton Park Obs. in Western Australia, 10 in MPEC 2009-K45 -- 2009 KW2, 2009 KV2, 2009 KE3, 2009 KD3, 2009 KC3, 2009 HV77, 2009 HB82, 2004 LC2, 2002 NP1, 155334
E12Siding Spring Survey (SSS) in New South Wales, 6 in MPECs 2009-K45, 2009-K46 & 2009-K50 -- 2009 KW2, 2009 KN4, 2009 KE3, 2009 KD3, 2009 KC3, 2008 CM
B40Skylive Obs. in Italy, 1 in MPEC 2009-K49 -- C/2009 K2
691Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2009-K45 -- 2009 JG1, 2000 KN44
291Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2009-K47 -- 2009 KO4
A71Stixendorf Obs. in Austria, 1 in MPEC 2009-K49 -- C/2009 K2
673Table Mtn. Obs. in southern California, 1 in MPEC 2009-K49 -- C/2009 K2
6735Jim Young via Table Mtn. Obs. in southern California, 2 in MPECs 2009-K47 & 2009-K52 -- 2009 KR4, 2009 KO4
A48Verona Obs. in Italy, 1 in MPEC 2009-K45 -- 2009 JM2
A79Zvezdno Obshtestvo Obs. in Bulgaria, 1 in MPEC 2009-K49 -- C/2009 K2
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 26 May '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 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
2009 KN4JPL Sentry16032013-21081006.0e-07-2.72-3.010JPL: "Analysis based on 12 observations spanning 2.6603 days (2009-May-23.78358 to 2009-May-26.44385)." Diameter approximately 0.853 km. from mean, weighted H=18.0.
2009 KE3JPL Sentry1401R E M O V E DJPL: Risk listing removed at 0850 UTC.
NEODyS1400R E M O V E D-
2009 KC3JPL Sentry1401204331.7e-07-3.18-3.340JPL: "Analysis based on 30 observations spanning 21.166 days (2009-May-04.59432 to 2009-May-25.76019)." Diameter approximately 0.890 km. from mean, weighted H=17.9.
NEODyS1401204331.51e-07-3.24-3.430NEODyS: "Based on 30 optical observations (of which 0 are rejected as outliers) from 2009/05/04.595 to 2009/05/25.761."
2009 KKJPL Sentry15342022-203843.7e-05-1.58-1.581JPL: "Analysis based on 70 observations spanning 8.8622 days (2009-May-17.25987 to 2009-May-26.12204)." Diameter approximately 0.270 km. from mean, weighted H=20.5.
NEODyS14012022-203833.71e-05-1.58-1.581NEODyS: "Based on 70 optical observations (of which 0 are rejected as outliers) from 2009/05/17.261 to 2009/05/26.123. NOTE: The Virtual Impactor in 2022/05/29.763 ... is rated as Torino Scale 1."

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 May '09

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

2358Grabbed MPEC 2009-K51 - 2009 KQ4 - see above
Grabbed MPEC 2009-K52 - 2009 KR4 - see above
2210Grabbed MPEC 2009-K50 - 2008 CM - see above
1603Noted that JPL Sentry has posted 2009 KN4 as an impact risk - see above
1534Noted that JPL Sentry has updated its 2009 KK risk assessment - see above
Grabbed MPEC 2009-K48 - Comet P/2009 K1 (Gibbs) - see above
Grabbed MPEC 2009-K49 - Comet C/2009 K2 (Catalina) - see above
1401Noted that JPL Sentry has updated its 2009 KC3 risk assessment - see above
Noted that NEODyS has updated its 2009 KC3 risk assessment - see above
Noted that JPL Sentry has removed 2009 KE3 as an impact risk - see above
Noted that NEODyS has updated its 2009 KK risk assessment - see above
Grabbed MPEC 2009-K45 - Daily Orbit Update - see above
Grabbed MPEC 2009-K47 - 2009 KO4 - see above
1400Noted that NEODyS has removed 2009 KE3 as an impact risk - see above
Grabbed MPEC 2009-K46 - 2009 KN4 - see above