Contents on 16 May '11
- IAU Minor Planet Center
- Observers -- six observers
- Impact Risk Monitoring -- one object
- Consolidated Risk Tables - the CRT page
Of 403 risk-listed objects, 17 have had news in the last 31 days. Updated at 1547 UTC on 16 May.
- Earth's Busy Neighborhood Traffic Report
No objects are known to be within ten LD of Earth today. Updated at 1647 UTC on 16 May.
- 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 16 May '11
The MPC's NEO Confirmation Page has 5 listings
When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had five objects listed. Of these, three were "one nighters." So far The Tracking News has counted a total of eleven listings on the NEOCP 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 16 May '11
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
- K11H05O 2011 HO5 (small asteroid, arc=18 days, H=24.3 ~47m) from Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (May 15.33-34p4)
- Observations of recently (no longer) risk-listed objects
- K11J00K 2011 JK (arc=12 days, H=18.4 ~708m) from Schiaparelli Obs. (May 4.85-87p2)
- K11H04S 2011 HS4 (q=0.300 AU, arc=17 days, H=20.9 ~224m) from Schiaparelli Obs. (May 13.02-04p2)
- K11H00T 2011 HT (almost small, arc=20 days, H=21.9 ~141m) from Holmes/CTIO (May 15.35p4)
- Observations of small asteroids (H>22.0)
- K11J10B 2011 JB10 (arc=7 days, H=24.7 ~39m) from Holmes/CTIO (May 15.07-08p3)
- Observations of almost-small asteroids (21.7<H<=22.0)
- K11H00P 2011 HP (arc=21 days, H=22.0 ~135m) from Holmes/CTIO (May 15.34-37p6)
- Observations of other objects
- K11J13R 2011 JR13 (q=0.355 AU, arc=5 days, H=19.7 ~389m) from Holmes/CTIO (May 15.03-04p4)
- K11J01D 2011 JD1 (arc=10 days, H=21.7 ~155m) from Schiaparelli Obs. (May 6.85-86p2)
- K11H01H 2011 HH1 (arc=13 days, H=21.7 ~155m) from Schiaparelli Obs. (May 7.07-09p2)
- K11H00R 2011 HR (arc=19 days, H=19.7 ~389m) from Schiaparelli Obs. (May 12.97-99p2)
- K11G65X 2011 GX65 (arc=28 days, H=21.7 ~155m) from Schiaparelli Obs. (May 7.00-02p2)
- K11G62D 2011 GD62 (Q=5.247 AU, arc=28 days, H=17.0 ~1.35 km) from Schiaparelli Obs. (May 6.93-94p2)
- K11C46Y 2011 CY46 (arc=33 days, H=19.9 ~355m) from Bornheim Obs. (March 8.97-98p3)
- K10X00J 2010 XJ (arc=157 days, H=19.7 ~389m) from Schiaparelli Obs. (May 6.88-90p2)
- K10TE9V 2010 TV149 (arc=3 opp, H=18.6 ~645m) from Schiaparelli Obs. (May 7.04-05p2) and Sandlot Obs. (May 15.37-38p3)
- K10T05U 2010 TU5 (arc=2 opp, H=18.9 ~562m) from New Millennium Obs. (May 8.03-08p7)
- K07L19Q 2007 LQ19 (Q=4.247 AU, arc=3 opp, H=17.2 ~1.23 km) from Schiaparelli Obs. (May 8.87p2)
- K06G02Y 2006 GY2 (arc=3 opp, H=18.8 ~589m) from Schiaparelli Obs. (May 12.94-95p2)
- K04G00P 2004 GP (q=0.356 AU, arc=3 opp, H=19.4 ~446m) from New Millennium Obs. (May 8.05p3)
- R4138 274138 2008 FU6 from Bornheim Obs. (April 21.90p2 & May 1.86-87p5)
- Q7759 267759 2003 MC7 from New Millennium Obs. (May 8.04-09p6)
- Q0141 260141 2004 QT24 from Bornheim Obs. (May 1.88-89p3)
- I8174 188174 2002 JC from New Millennium Obs. (May 8.04-09p6) and Pear Tree Obs. (May 15.14-17p3)
- D7170 137170 1999 HF1 from New Millennium Obs. (May 8.05-10p6)
- 68348 68348 2001 LO7 from New Millennium Obs. (May 8.06-10p6)
- 01917 1917 Cuyo (1968 AA) from New Millennium Obs. (May 8.05-09p5)
Observers on 16 May '11
Six observers appear in today's MPEC.
|Code||Observer / observatory|
|127||Bornheim Obs. in Germany, 3 in MPEC 2011-K01 -- 2011 CY46, 274138, 260141|
|807|||Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 5 in MPEC 2011-K01 -- 2011 JR13, 2011 JB10, 2011 HT, 2011 HP, 2011 HO5|
|A24||New Millennium Obs. in Italy, 7 in MPEC 2011-K01 -- 2010 TU5, 2004 GP, 68348, 267759, 188174, 137170, 1917|
|H23||Pear Tree Obs. in Florida, 1 in MPEC 2011-K01 -- 188174|
|H36||Sandlot Obs. in Kansas, 1 in MPEC 2011-K01 -- 2010 TV149|
|204||Schiaparelli Obs. in Italy, 11 in MPEC 2011-K01 -- 2011 JK, 2011 JD1, 2011 HS4, 2011 HR, 2011 HH1, 2011 GX65, 2011 GD62, 2010 XJ, 2010 TV149, 2007 LQ19, 2006 GY2|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 16 May '11
Notes for Today's Latest Risk Assessments
|2011 HO5||JPL Sentry||1547||2079-2090||2||2.7e-07||-6.55||-6.56||0||JPL: "Analysis based on 63 observations spanning 17.942 days (2011-Apr-27.39956 to 2011-May-15.34108)." Diameter approximately 0.048 km. from mean, weighted H=24.3.|
|NEODyS||1547||R E M O V E D||-|
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.