Contents on 5 July '09
- IAU Minor Planet Center
- Observers -- two observing facilities
- Impact Risk Monitoring -- two objects
- Consolidated Risk Tables - the CRT page
- Earth's Busy Neighborhood Traffic Report
- Ephemerides for risk-rated and nearby objects
- 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 5 July '09
The MPC's NEO Confirmation Page is currently empty
The NEOCP is currently empty. There was one listing noted earlier today.
New MPECs on 5 July '09
Minor Planet Electronic Circulars
As of last check at 2359 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
- K09M09B 2009 MB9 (Q=4.960 AU, arc=5 days, H=18.8 ~589m) from David Tholen's team on Mauna Kea (July 4.25p3)
- K09M01G 2009 MG1 (small asteroid, arc=11 days, H=24.0 ~54m) from Tholen team/Mauna Kea (July 2.37p2)
- Observations of other objects
- K09N00E 2009 NE (q=0.357 AU, Q=5.156 AU, arc=3 days, H=15.5 ~2.69 km) from Doc Greiner Research Obs. (DGRO) (July 5.16-18p5)
- K02L00V 2002 LV (arc=3 opp, H=16.6 ~1.62 km) from DGRO (July 5.18-22p15)
Observers on 5 July '09
Two observing facilities appear in today's MPEC.
|Code||Observer / observatory|
|H26||Doc Greiner Research Obs. (DGRO) in Wisconsin, 2 in MPEC 2009-N11 -- 2009 NE, 2002 LV|
|5682||David Tholen's team on Mauna Kea in Hawaii, 2 in MPEC 2009-N11 -- 2009 MG1, 2009 MB9|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 5 July '09
Notes for Today's Latest Risk Assessments
|2009 MB9||JPL Sentry||1520||2031-2084||2||1.5e-08||-4.47||-4.48||0||JPL: "Analysis based on 14 observations spanning 4.7795 days (2009-Jun-29.47208 to 2009-Jul-04.251543)." Diameter approximately 0.640 km. from mean, weighted H=18.6.|
|NEODyS||1520||2031-2049||2||1.87e-08||-4.13||-4.13||0||NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2009/06/29.473 to 2009/07/04.252."|
|2009 MG1||JPL Sentry||1520||2079||1||8.9e-08||-6.58||-6.58||0||JPL: "Analysis based on 20 observations spanning 11.101 days (2009-Jun-21.27223 to 2009-Jul-02.372809)." Diameter approximately 0.052 km. from mean, weighted H=24.1.|
|NEODyS||1520||2079||1||7.91e-08||-6.63||-6.63||0||NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2009/06/21.273 to 2009/07/02.374."|
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 5 July '09
Times are UTC for when items were noted or added by The Tracking News.
|1732||Noted that the NEOCP has become empty|
|1520||Noted that JPL Sentry has updated its 2009 MB9 risk assessment - see above|
Noted that NEODyS has updated its 2009 MB9 risk assessment - see above
Noted that JPL Sentry has updated its 2009 MG1 risk assessment - see above
Noted that NEODyS has updated its 2009 MG1 risk assessment - see above
Grabbed MPEC 2009-N11 - Daily Orbit Update - see above
Noted that the NEOCP has become active