Contents on 12 January '12
- IAU Minor Planet Center
- Observers -- three observers
- Impact Risk Monitoring -- one object
- Consolidated Risk Tables - the CRT page (archive)
Of 424 risk-listed objects, 20 have had news in the last 31 days. Updated at 1551 UTC on 12 Jan.
- Earth's Busy Neighborhood close passer Traffic Report
Three objects are known to be within ten LD of Earth today. Updated at 1631 UTC on 12 Jan.
- Ephemerides for risk-rated & nearby objects + potential mission destinations
- News image catalog
- News old archive & Small Objects Archive
- Object Links - mainly for radar targets & close passers - updated 11 Jan.
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 12 January '12
The MPC's NEO Confirmation Page has 5 listings
When last checked at 2307 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had five objects listed.
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 12 January '12
Minor Planet Electronic Circulars
As of last check at 2307 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.
MPEC 2012-A50 - "00:23 UT" - 2003 AF23
Observers on 12 January '12
Three observers appear in today's MPEC.
|Code||Observer / observatory|
|J95||Great Shefford Obs. in England, 1 in MPEC 2012-A50 -- 2003 AF23|
|A24||New Millennium Obs. in Italy, 1 in MPEC 2012-A50 -- 2003 AF23|
|E12||Siding Spring Survey in New South Wales, 1 in MPEC 2012-A50 -- 2003 AF23|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 12 January '12
Notes for Today's Latest Risk Assessments
|2012 AP10||NEODyS||1551||2047-2089||65||6.51e-05||-5.10||-6.01||0||NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2012-01-11.084 to 2012-01-11.287."|
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.