Contents on 18 July '10
- IAU Minor Planet Center
- Observers -- seven observing facilities
- Impact Risk Monitoring -- two objects
Note: A/CC news pages will update infrequently for much of the remainder of July.
- Consolidated Risk Tables - the CRT page
Of 328 risk-listed objects, 25 have had news in the last month. Updated at 1231 UTC.
- Earth's Busy Neighborhood Traffic Report
One object is known to be within ten LD of Earth today. Updated at 0226 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 18 July '10
The MPC's NEO Confirmation Page has 13 listings: 7 new, 6 updated
When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had seven new and six updated listings. Of these, two were "one nighters." So far The Tracking News has counted a total of sixteen 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 18 July '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
- K10N02B 2010 NB2 (arc=8 days, H=20.3 ~295m) from Great Shefford Obs. (July 17.94-98p3)
- F3814 153814 2001 WN5 from David Tholen's team on Mauna Kea (July 15.26p3)
- Observations of recently (no longer) risk-listed objects
- K10M01F 2010 MF1 (arc=30 days, H=19.5 ~426m) from Schiaparelli Obs. (July 15.87-88p2) and Astronomical Research Obs. Westfield (July 18.11-12p3)
- Observations of small asteroids (H>22.0)
- K10N01K 2010 NK1 (arc=11 days, H=22.4 ~112m) from ARO Westfield (July 18.11p3)
- Observations of other objects
- K10L15E 2010 LE15 (arc=2 opp, H=19.5 ~426m) from Guidestar Obs. (July 18.04-06p3)
- K10E20H 2010 EH20 (arc=133 days, H=18.0 ~851m) from Hamamatsu-Yuto Obs. (July 17.51-55p12)
- K07L00L 2007 LL (arc=4 opp, H=20.4 ~282m) from Schiaparelli Obs. (July 15.94-95p2)
- I9011 189011 Ogmios (1997 NJ6) from Guidestar Obs. (July 18.00-02p3)
- E3381 143381 2003 BC21 from La Sagra Obs. (July 17.10-12p3)
- 85989 85989 1999 JD6 from Schiaparelli Obs. (July 15.93-97p3)
- 19764 19764 2000 NF5 from La Sagra Obs. (July 17.04-07p3)
Observers on 18 July '10
Seven observing facilities appear in today's MPEC.
|Code||Observer / observatory|
|H21||Astronomical Research Obs. Westfield in Illinois, 2 in MPEC 2010-O06 -- 2010 NK1, 2010 MF1|
|J95||Great Shefford Obs. in England, 1 in MPEC 2010-O06 -- 2010 NB2|
|A17||Guidestar Obs. in Germany, 2 in MPEC 2010-O06 -- 2010 LE15, 189011|
|379||Hamamatsu-Yuto Obs. in Japan, 1 in MPEC 2010-O06 -- 2010 EH20|
|J75||La Sagra Obs. in Spain, 2 in MPEC 2010-O06 -- 19764, 143381|
|5682||David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-O06 -- 153814|
|204||Schiaparelli Obs. in Italy, 3 in MPEC 2010-O06 -- 2010 MF1, 2007 LL, 85989|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 18 July '10
Notes for Today's Latest Risk Assessments
|2010 NB2||JPL Sentry||1231||R E M O V E D||JPL: Risk listing removed at 0952 UTC.|
|153814 2001 WN5||NEODyS||1231||2106-2107||2||3.42e-11||-7.53||-7.75||0||NEODyS: "Based on 232 optical observations (of which 4 are rejected as outliers) from 1996/02/10.397 to 2010/07/15.260."|
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 18 July '10
Times are UTC for when items were noted or added by The Tracking News.
|1231||Noted that NEODyS has updated its 153814 2001 WN5 risk assessment - see above|
Noted that JPL Sentry has removed 2010 NB2 as an impact risk - see above
Grabbed MPEC 2010-O06 - Daily Orbit Update - see above