Contents on 1 May '10
- IAU Minor Planet Center
- Observers -- six observing facilities
- Impact Risk Monitoring -- one object
- Consolidated Risk Tables - the CRT page
- Earth's Busy Neighborhood Traffic Report
- 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 1 May '10
The MPC's NEO Confirmation Page has 14 listings: 12 new, 2 updated
When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had twelve new and two updated listings. Of these, four were "one nighters."
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 1 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.
- Observations of risk-listed objects
- K09X00O 2009 XO (arc=116 days, H=20.6 ~257m) from David Tholen's team on Mauna Kea (April 4.62p1 at R=22.8)
- Observations of small asteroids (H>22.0)
- K10G67N 2010 GN67 (arc=5 days, H=22.2 ~123m) from Haute Provence Obs. (April 19.96-97p4)
- Observations of other objects
- K10G24A 2010 GA24 (arc=26 days, H=21.1 ~204m) from Los Molinos Obs. (April 30.10-12p28)
- K09X02C 2009 XC2 (Q=4.187 AU, arc=3 opp, H=17.1 ~1.29 km) from Castelmartini Obs. (April 29.08-09p2)
- J99G05Y 1999 GY5 (arc=5 opp, H=20.0 ~339m) from Astronomical Research Obs. Westfield (April 28.11-12p2)
- L8863 218863 2006 WO127 from Vicksburg Obs. (April 30.13-16p3)
Observers on 1 May '10
Six observing facilities appear in today's MPEC.
|Code||Observer / observatory|
|H21||Astronomical Research Obs. Westfield in Illinois, 1 in MPEC 2010-J01 -- 1999 GY5|
|160||Castelmartini Obs. in Italy, 1 in MPEC 2010-J01 -- 2009 XC2|
|511||Haute Provence Obs. in Germany, 1 in MPEC 2010-J01 -- 2010 GN67|
|844||Los Molinos Obs. in Uruguay, 1 in MPEC 2010-J01 -- 2010 GA24|
|5682||David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-J01 -- 2009 XO|
|H47||Vicksburg Obs. in Mississippi, 1 in MPEC 2010-J01 -- 218863|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 1 May '10
Notes for Today's Latest Risk Assessments
|2009 XO||NEODyS||1804||2083-2088||2||4.81e-07||-4.34||-4.58||0||NEODyS: "Based on 222 optical observations (of which 0 are rejected as outliers) from 2009/12/09.153 to 2010/04/04.619."|
|JPL Sentry||1504||2083||1||2.7e-07||-4.57||-4.57||0||JPL: "Analysis based on 222 observations spanning 116.47 days (2009-Dec-09.152 to 2010-Apr-04.618115)." Diameter approximately 0.270 km. from mean, weighted H=20.5.|
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 1 May '10
Times are UTC for when items were noted or added by The Tracking News.
|1804||Noted that NEODyS has updated its 2009 XO risk assessment - see above|
|1504||Noted that JPL Sentry has updated its 2009 XO risk assessment - see above|
Grabbed MPEC 2010-J01 - Daily Orbit Update - see above