Contents on 25 December '10
- IAU Minor Planet Center
- Observers -- five observers
- Impact Risk Monitoring -- one object
- Consolidated Risk Tables - the CRT page
Of 388 risk-listed objects, 350 have had news in the last 31 days. Updated at 1731 UTC on 25 Dec.
- Earth's Busy Neighborhood Traffic Report
Four objects are known to be within ten LD of Earth today. Updated at 1740 UTC on 25 Dec.
- 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 25 December '10
The MPC's NEO Confirmation Page has 2 listings: 1 new, 1 updated
When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and one updated listing.
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 25 December '10
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
- K10X69Q 2010 XQ69 (small asteroid, arc=10 days, H=22.9 ~89m) from the Spacewatch 1.8m telescope (Dec. 24.29p2)
- Observations of recently (no longer) risk-listed objects
- K10W08Z 2010 WZ8 (arc=25 days, H=20.5 ~269m) from Spacewatch 1.8m (Dec. 24.44-45p2)
- Observations of almost-small asteroids (21.7<H<=22.0)
- K10X24B 2010 XB24 (arc=17 days, H=21.9 ~141m) from Spacewatch 1.8m (Dec. 24.30-31p3)
- Observations of other objects
- K10X72Z 2010 XZ72 (arc=9 days, H=19.9 ~355m) from Spacewatch 1.8m (Dec. 24.48-50p5)
- K10X72Y 2010 XY72 (arc=10 days, H=18.4 ~708m) from Spacewatch 1.8m (Dec. 25.07-08p3)
- K10X52K 2010 XK52 (arc=14 days, H=17.9 ~891m) from Spacewatch 1.8m (Dec. 24.46-47p3)
- K10X11G 2010 XG11 (arc=19 days, H=19.9 ~355m) from Spacewatch 1.8m (Dec. 24.34-37p6)
- K10X11B 2010 XB11 (IEO, q=0.288 AU, Q=0.948 AU, arc=22 days, H=19.9 ~355m) from Spacewatch 1.8m (Dec. 24.51-52p3)
- K10X03J 2010 XJ3 (arc=22 days, H=21.3 ~186m) from Spacewatch 1.8m (Dec. 25.26p3)
- K10X00Z 2010 XZ (Q=4.686 AU, arc=23 days, H=20.3 ~295m) from Spacewatch 1.8m (Dec. 25.24-25p3)
- K10W08Y 2010 WY8 (arc=24 days, H=21.1 ~204m) from Spacewatch 1.8m (Dec. 24.32-33p3 at V=21.2-22.1)
- K10V00Z 2010 VZ (arc=53 days, H=19.4 ~446m) from WISE (Dec. 20.99p2, 21.13p1, 21.26p1, 21.39p1 & 21.52p1) and Spacewatch 1.8m (Dec. 25.19-20p3)
- K10U08K 2010 UK8 (arc=55 days, H=20.0 ~339m) from Spacewatch 1.8m (Dec. 25.08-09p3)
- K10T54P 2010 TP54 (arc=76 days, H=21.7 ~155m) from Great Shefford Obs. (Dec. 24.89-92p3)
- K10S16O 2010 SO16 (arc=99 days, H=20.6 ~257m) from Spacewatch 1.8m (Dec. 25.14-15p3)
- K10S13D 2010 SD13 (Q=4.305 AU, arc=83 days, H=18.8 ~589m) from Castelmartini Obs. (Dec. 11.74-75p3)
- K10K00H 2010 KH (Q=4.283 AU, arc=222 days, H=19.4 ~446m) from Spacewatch 1.8m (Dec. 24.38p3)
- K10J33L 2010 JL33 (Q=4.634 AU, arc=4 opp, H=17.6 ~1.02 km) from Castelmartini Obs. (Dec. 11.71-72p6) and Hamamatsu-Yuto Obs. (Dec. 23.48-56p12)
- K08A28T 2008 AT28 (arc=2 opp, H=18.5 ~676m) from WISE (Dec. 20.47p1, 20.60p1, 20.73p1, 20.99p1, 21.13p1, 21.26p1, 21.52p2, 22.05p1, 22.18p1, 22.32p1, 22.38p1, 22.45p1, 22.52p1, 22.58p1, 22.65p1, 22.71p1, 22.98p1, 23.04p1, 23.18p1, 23.24p1, 23.31p1, 23.38p1 & 23.44p1)
- K05UF7O 2005 UO157 (Q=4.495 AU, arc=2 opp, H=18.3 ~741m) from Spacewatch 1.8m (Dec. 24.53-54p3)
- O9886 249886 2001 RY11 from WISE (Dec. 22.26p1, 22.39p1, 22.53p1, 22.66p1, 22.92p1, 23.05p2 & 23.19p1)
- O4977 244977 2004 BE68 from WISE (Dec. 20.46p1, 20.53p1, 20.59p2, 20.66p1, 20.72p1, 20.79p1, 20.99p1 & 21.12p1)
- 89830 89830 2002 CE from WISE (Dec. 20.62p1 & 20.75p1)
Observers on 25 December '10
Five observers appear in today's MPEC.
|Code||Observer / observatory|
|160||Castelmartini Obs. in Italy, 2 in MPEC 2010-Y25 -- 2010 SD13, 2010 JL33|
|J95||Great Shefford Obs. in England, 1 in MPEC 2010-Y25 -- 2010 TP54|
|379||Hamamatsu-Yuto Obs. in Japan, 1 in MPEC 2010-Y25 -- 2010 JL33|
|291||Spacewatch 1.8m telescope in Arizona, 16 in MPEC 2010-Y25 -- 2010 XZ72, 2010 XZ, 2010 XY72, 2010 XQ69, 2010 XK52, 2010 XJ3, 2010 XG11, 2010 XB24, 2010 XB11, 2010 WZ8, 2010 WY8, 2010 VZ, 2010 UK8, 2010 SO16, 2010 KH, 2005 UO157|
|C51||WISE in Earth polar orbit, 5 in MPEC 2010-Y25 -- 2010 VZ, 2008 AT28, 89830, 249886, 244977|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 25 December '10
Notes for Today's Latest Risk Assessments
|2010 XQ69||JPL Sentry||1730||R E M O V E D||JPL: Risk listing removed at 1102 UTC.|
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.