Contents on 28 June '10
- IAU Minor Planet Center
- Observers -- seven observing facilities
- Impact Risk Monitoring -- two objects
- Consolidated Risk Tables - the CRT page
Of 326 risk-listed objects, 23 have had news in the last month. Updated at 2359 UTC.
- Earth's Busy Neighborhood Traffic Report
Two objects are known to be within ten LD of Earth today. Updated at 1610 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 28 June '10
The MPC's NEO Confirmation Page has 6 listings: 4 new, 2 updated
When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had four new and two updated listings. So far The Tracking News has counted a total of eight 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 28 June '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 recently (no longer) risk-listed objects
- K10M01F 2010 MF1 (Q=4.002 AU, arc=9 days, H=19.4 ~446m) from Astronomical Research Obs. Westfield (June 27.11-13p3)
- K10L34L 2010 LL34 (arc=18 days, H=19.4 ~446m) from Tenagra II Obs. (June 27.40-42p3)
- Observations of small asteroids (H>22.0)
- K10M01Y 2010 MY1 (arc=4 days, H=23.8 ~59m) from ARO Westfield (June 27.11-12p4)
- K10L68E 2010 LE68 (arc=8 days, H=25.9 ~22m) from ARO Westfield (June 23.21-25p2)
- Observations of other objects
- K10M01P 2010 MP1 (arc=9 days, H=21.3 ~186m) from ARO Westfield (June 27.19-21p5) and Doc Greiner Research Obs. (DGRO) (June 28.13p2)
- K10M01H 2010 MH1 (arc=8 days, H=21.1 ~204m) from ARO Westfield (June 27.15-18p3)
- K10M00Q 2010 MQ (q=0.385 AU, arc=9 days, H=19.9 ~355m) from Tenagra II Obs. (June 24.21-22p3) and ARO Westfield (June 25.15-17p3)
- K10LA8T 2010 LT108 (arc=10 days, H=19.8 ~371m) from the Spacewatch 0.9m telescope (June 23.26-27p3)
- K10L68M 2010 LM68 (arc=12 days, H=20.8 ~234m) from ARO Westfield (June 27.25-27p3)
- K10J87G 2010 JG87 (q=0.146 AU, Q=5.380 AU, arc=42 days, H=19.3 ~467m) from Spacewatch 0.9m (June 23.34-35p3)
- K10F80X 2010 FX80 (i=37.0°, arc=84 days, H=20.6 ~257m) from David Tholen's team on Mauna Kea (June 19.35p2 at R=22.6-7)
- K10E20H 2010 EH20 (arc=112 days, H=18.0 ~851m) from ARO Westfield (June 27.31-33p3)
- K10C18L 2010 CL18 (Q=4.186 AU, arc=134 days, H=18.3 ~741m) from ARO Westfield (June 27.22-24p3)
- K09SA3M 2009 SM103 (Q=4.413 AU, arc=100 days, H=16.8 ~1.48 km) from Betelgeuse Station (2009 Oct. 12.84p3)
- K07X10B 2007 XB10 (i=41.4°, arc=2 opp, H=17.6 ~1.02 km) from Mirasteilas Obs. (June 27.89-91p3)
- K06SL7Z 2006 SZ217 (arc=4 opp, H=17.3 ~1.17 km) from ARO Westfield (June 27.29-32p3)
- K06K21L 2006 KL21 (arc=2 opp, H=20.8 ~234m) from ARO Westfield (June 27.36-37p4)
- K04J20X 2004 JX20 (arc=3 opp, H=19.4 ~446m) from ARO Westfield (June 27.15-17p4)
- 54789 54789 2001 MZ7 from Mirasteilas Obs. (June 27.93-95p3)
Observers on 28 June '10
Seven observing facilities appear in today's MPEC.
|Code||Observer / observatory|
|H21||Astronomical Research Obs. Westfield in Illinois, 12 in MPEC 2010-M66 -- 2010 MY1, 2010 MQ, 2010 MP1, 2010 MH1, 2010 MF1, 2010 LM68, 2010 LE68, 2010 EH20, 2010 CL18, 2006 SZ217, 2006 KL21, 2004 JX20|
|B75||Betelgeuse Station in Italy, 1 in MPEC 2010-M66 -- 2009 SM103|
|H26||Doc Greiner Research Obs. in Wisconsin, 1 in MPEC 2010-M66 -- 2010 MP1|
|5682||David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-M66 -- 2010 FX80|
|B67||Mirasteilas Obs. in Switzerland, 2 in MPEC 2010-M66 -- 2007 XB10, 54789|
|691||Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2010-M66 -- 2010 LT108, 2010 JG87|
|926||Tenagra II Obs. in Arizona, 2 in MPEC 2010-M66 -- 2010 MQ, 2010 LL34|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 28 June '10
Notes for Today's Latest Risk Assessments
|2010 LD64||JPL Sentry||2359||2043-2098||9||1.0e-07||-7.28||-7.37||0||JPL: "Analysis based on 18 observations spanning 1.0585 days (2010-Jun-14.28757 to 2010-Jun-15.34605)." Diameter approximately 0.028 km. from mean, weighted H=25.4.|
|2010 JH110||JPL Sentry||2359||2071-2092||3||6.8e-05||-5.11||-5.26||0||JPL: "Analysis based on 60 observations spanning 34.114 days (2010-May-15.30867 to 2010-Jun-18.42252)." Diameter approximately 0.019 km. from mean, weighted H=26.3.|
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 28 June '10
Times are UTC for when items were noted or added by The Tracking News.
|2359||Noted that JPL Sentry has updated its 2010 JH110 risk assessment - see above|
Noted that JPL Sentry has updated its 2010 LD64 risk assessment - see above
|1505||Grabbed MPEC 2010-M66 - Daily Orbit Update - see above|