Contents  on 20 May '10


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 20 May '10

The MPC's NEO Confirmation Page has 15 listings: 5 new, 10 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had five new and ten updated listings. Of these, five were "one nighters." So far The Tracking News has counted a total of 22 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 20 May '10

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been eight MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2010-K31 - "20:44 UT" - Comet C/2010 J2 (McNaught)

MPEC 2010-K30 - "17:17 UT" - 2010 KX7

MPEC 2010-K29 - "17:05 UT" - 2010 KW7

MPEC 2010-K28 - "17:01 UT" - 2010 JC147

MPEC 2010-K27 - "15:35 UT" - 2010 KV7

MPEC 2010-K26 - "15:22 UT" - 2010 KU7

<< DOU on 20 May '10 >>  MPEC 2010-K25 - "06:10 UT" - Daily Orbit Update

MPEC 2010-K24 - "01:36 UT" - 2010 JH124

Observers  on 20 May '10

Nineteen observing facilities appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 1 in MPEC 2010-K31 -- C/2010 J2
H21Astronomical Research Obs. Westfield in Illinois, 1 in MPEC 2010-K24 -- 2010 JH124
B75Betelgeuse Station in Italy, 2 in MPEC 2010-K25 -- 2009 JM2, 212546
I99Blanquita Obs. in Spain, 1 in MPEC 2010-K25 -- 2010 FC81
703Catalina Sky Survey (CSS) in Arizona, 4 in MPEC 2010-K25 -- 2009 KD5, 234061, 6050, 887
H26Doc Greiner Research Obs. (DGRO) in Wisconsin, 2 in MPEC 2010-K25 -- 2010 JV34, 2010 FC81
A27Eridanus Obs. in Germany, 1 in MPEC 2010-K25 -- 218863
704LINEAR in New Mexico, 3 in MPEC 2010-K25 -- 2010 JG88, 2006 CX10, 68216
H01Magdalena Ridge Obs. (MRO) in New Mexico, 2 in MPECs 2010-K24 & 2010-K26 -- 2010 KU7, 2010 JH124
5682David Tholen's team on Mauna Kea in Hawaii, 2 in MPECs 2010-K24 & 2010-K25 -- 2010 JH124, 2010 AG79
G96Mt. Lemmon Survey (MLS) in Arizona, 3 in MPECs 2010-K25, 2010-K26 & 2010-K27 -- 2010 KV7, 2010 KU7, 2010 FP
H06RAS Obs. Mayhill in New Mexico, 1 in MPEC 2010-K31 -- C/2010 J2
E12Siding Spring Survey in New South Wales, 1 in MPEC 2010-K29 -- 2010 KW7
691Spacewatch 0.9m telescope in Arizona, 4 in MPECs 2010-K24 & 2010-K25 -- 2010 JH88, 2010 JH124, 2010 GO33, 3551
291Spacewatch 1.8m telescope in Arizona, 13 in MPECs 2010-K25, 2010-K26, 2010-K27, 2010-K28, 2010-K29 & 2010-K30 -- 2010 KX7, 2010 KW7, 2010 KV7, 2010 KU7, 2010 JT39, 2010 JH80, 2010 JG80, 2010 JE88, 2010 JC147, 2010 GX62, 2010 GR33, 2006 TB, 2004 BW58
926Tenagra II Obs. in Arizona, 4 in MPEC 2010-K25 -- 2010 KD, 2010 JN71, 2010 JL41, 2010 JH88
H83Timberlake Obs. in Virginia, 1 in MPEC 2010-K25 -- 2010 JV34
H10Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2010-K31 -- C/2010 J2
C51WISE in Earth polar orbit, 4 in MPECs 2010-K24, 2010-K28, 2010-K29 & 2010-K30 -- 2010 KX7, 2010 KW7, 2010 JH124, 2010 JC147
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 20 May '10

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 CLOMON (backup) risk pages.





Notes for Today's Latest Risk Assessments
2010 KX7JPL Sentry1920201911.4e-10-7.48-7.480JPL: "Analysis based on 16 observations spanning 2.9080 days (2010-May-16.26929 to 2010-May-19.17731)." Diameter approximately 0.150 km. from mean, weighted H=21.7.
2010 KV7JPL Sentry19202034-2109482.8e-05-5.10-5.510JPL: "Analysis based on 14 observations spanning 3.0485 days (2010-May-17.2011 to 2010-May-20.24965)." Diameter approximately 0.021 km. from mean, weighted H=26.0.
2010 JE88JPL Sentry1410204117.0e-09-5.92-5.920JPL: "Analysis based on 67 observations spanning 4.9987 days (2010-May-14.24843 to 2010-May-19.24711)." Diameter approximately 0.170 km. from mean, weighted H=21.5.
2010 JH80NEODyS21492074-208432.09e-06-5.19-5.220NEODyS: "Based on 25 optical observations (of which 0 are rejected as outliers) from 2010/05/13.256 to 2010/05/19.281."
JPL Sentry14102074-209552.1e-06-5.19-5.230JPL: "Analysis based on 25 observations spanning 6.0246 days (2010-May-13.25519 to 2010-May-19.27974)." Diameter approximately 0.042 km. from mean, weighted H=24.5.
153814 2001 WN5NEODyS14102106-212254.07e-10-6.46-6.810NEODyS: "Based on 198 optical observations (of which 4 are rejected as outliers) from 1996/02/10.397 to 2010/05/18.512."

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 20 May '10

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

2149Noted that NEODyS has updated its 2010 JH80 risk assessment - see above
2131Grabbed MPEC 2010-K31 - Comet C/2010 J2 (McNaught) - see above
1920Noted that JPL Sentry has posted 2010 KV7 as an impact risk - see above
Noted that JPL Sentry has posted 2010 KX7 as an impact risk - see above
1739Grabbed MPEC 2010-K28 - 2010 JC147 - see above
Grabbed MPEC 2010-K29 - 2010 KW7 - see above
Grabbed MPEC 2010-K30 - 2010 KX7 - see above
1539Grabbed MPEC 2010-K26 - 2010 KU7 - see above
Grabbed MPEC 2010-K27 - 2010 KV7 - see above
1410Noted that NEODyS has updated its 153814 2001 WN5 risk assessment - see above
Noted that JPL Sentry has updated its 2010 JE88 risk assessment - see above
Noted that JPL Sentry has updated its 2010 JH80 risk assessment - see above
Grabbed MPEC 2010-K25 - Daily Orbit Update - see above
0504Grabbed MPEC 2010-K24 - 2010 JH124 - see above