Contents on 31 May '10
- IAU Minor Planet Center
- Observers -- three observing facilities
- Impact Risk Monitoring -- three objects
- Consolidated Risk Tables - the CRT page
Of 325 risk-listed objects, 31 have had news in the last month. Updated at 1458 UTC.
- Earth's Busy Neighborhood Traffic Report
Three objects are known to be within ten LD of Earth today. Updated at 0216 UTC.
- Ephemerides for risk-rated and nearby objects
- News image catalog
- Old & new CRT Archive
- Old News Archive & Small Objects Archive
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 31 May '10
The MPC's NEO Confirmation Page has 12 listings: 7 new, 5 updated
When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had seven new and five updated listings. Of these, four 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 31 May '10
Minor Planet Electronic Circulars
As of last check at 2358 UTC, there has been one MPEC posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts. No Daily Orbit Update DOU MPEC has been posted yet, so visit the MPC Status Page for possible explanation and check the MPC Mirror Page for alternate access to key pages, maybe including new MPECs. (The MPC Status Page reported today that "Last night's DOU MPEC has been abandoned as a result of a system failure overnight.")
MPEC 2010-K76 - "01:37 UT" - 2010 KB61
- K10K61B 2010 KB61 (i=47.9°, H=20.3 ~295m) was discovered at 1859 UT on 26 May by WISE, which observed it at May 26.79p1, 26.92p1, 26.99p1, 27.06p2, 27.12p1, 27.19p1, 27.25p1, 27.32p1, and 27.39p1. The discovery was confirmed by Astronomical Research Obs. Westfield (May 30.11-15p3) and Great Shefford Obs. (May 30.92-93p2).
Observers on 31 May '10
Three observing facilities appear in today's MPEC.
|Code||Observer / observatory|
|H21||Astronomical Research Obs. Westfield in Illinois, 1 in MPEC 2010-K76 -- 2010 KB61|
|J95||Great Shefford Obs. in England, 1 in MPEC 2010-K76 -- 2010 KB61|
|C51||WISE in Earth polar orbit, 1 in MPEC 2010-K76 -- 2010 KB61|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 31 May '10
Notes for Today's Latest Risk Assessments
|2010 KU10||NEODyS||1457||R E M O V E D||-|
|JPL Sentry||0104||R E M O V E D||JPL: Risk listing removed at 0050 UTC.|
|2010 KR10||NEODyS||1457||R E M O V E D||-|
|JPL Sentry||0104||R E M O V E D||JPL: Risk listing removed at 0054 UTC.|
|153814 2001 WN5||NEODyS||1457||2106-2122||5||3.97e-10||-6.47||-6.77||0||NEODyS: "Based on 202 optical observations (of which 4 are rejected as outliers) from 1996/02/10.397 to 2010/05/29.194."|
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 31 May '10
Times are UTC for when items were noted or added by The Tracking News.
|1457||Noted that NEODyS has updated its 153814 2001 WN5 risk assessment - see above|
Noted that NEODyS has removed 2010 KR10 as an impact risk - see above
Noted that NEODyS has removed 2010 KU10 as an impact risk - see above
|0537||Grabbed MPEC 2010-K76 - 2010 KB61 - see above|
|0104||Noted that JPL Sentry has removed 2010 KR10 as an impact risk - see above|
Noted that JPL Sentry has removed 2010 KU10 as an impact risk - see above