Contents on 6 June '09
- IAU Minor Planet Center
- NEOCP Activity -- none
- New MPECs -- one MPEC
- Observers -- five observing facilities
- Impact Risk Monitoring -- one object
- Chronology
Resources:
- Consolidated Risk Tables - the CRT page
- Earth's Busy Neighborhood Traffic Report
- Ephemerides for risk-rated and nearby objects
- Old & new CRT Archive
- Old News Archive & Small Objects Archive
The latest A/CC news is available via framed access, 
RSS news feed, or redirection. - Note: A/CC has a main Web site and also a backup site with its own duplicate RSS news feed.
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 6 June '09
The MPC's NEO Confirmation Page is currently empty
The NEOCP is currently empty and hasn't been noted by The Tracking News as being active yet today (checked at 2358 UTC). It was last noted active on June 4th.
New MPECs on 6 June '09
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.
<< DOU on 6 June '09 >> MPEC 2009-L22 - "06:08 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K09K00K 2009 KK (arc=19 days, H=20.5 ~269m) from Astronomical Research Obs. (ARO) (June 5.10p3)
- Observations of small asteroids (H>22.0)
- K09K04R 2009 KR4 (arc=10 days, H=25.0 ~34m) from ARO (June 5.12-14p3)
- Observations of other objects
- K09K22J 2009 KJ22 (arc=5 days, H=20.1 ~323m) from Alianza S4 Obs. (June 5.43p2)
- K09K00J 2009 KJ (q=0.351 AU, arc=20 days, H=17.1 ~1.29 km) from ARO (June 5.11p3)
- K09H77V 2009 HV77 (arc=46 days, H=20.8 ~234m) from ARO (June 5.13p3)
- K09H21D 2009 HD21 (Q=4.668 AU, arc=73 days, H=18.1 ~812m) from ARO (June 5.10-11p3)
- K09B02L 2009 BL2 (arc=138 days, H=19.4 ~446m) from ARO (June 5.14-15p5) and Petit Jean Mtn. South Obs. (PJMSO) (June 5.18p5)
- K02L00V 2002 LV (arc=3 opp, H=16.6 ~1.62 km) from Smolyan Obs. (May 28.97p3)
- K7945 207945 1991 JW from Smolyan Obs. (May 27.87p1)
- J4386 194386 2001 VG5 from Smolyan Obs. (May 27.92-93p3)
- D8883 138883 2000 YL29 from Balzaretto Obs. (June 4.93-94p3)
Observers on 6 June '09
Five observing facilities appear in today's MPEC.
| Code | Observer / observatory |
|---|---|
| I08 | Alianza S4 Obs. in Argentina, 1 in MPEC 2009-L22 -- 2009 KJ22 |
| H55 | Astronomical Research Obs. (ARO) in Illinois, 6 in MPEC 2009-L22 -- 2009 KR4, 2009 KK, 2009 KJ, 2009 HV77, 2009 HD21, 2009 BL2 |
| A81 | Balzaretto Obs. in Italy, 1 in MPEC 2009-L22 -- 138883 |
| H45 | Petit Jean Mtn. South Obs. in Arkansas, 1 in MPEC 2009-L22 -- 2009 BL2 |
| 071 | Smolyan Obs. in Bulgaria, 3 in MPEC 2009-L22 -- 2002 LV, 207945, 194386 |
| For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page. | |
Impact Risk Monitoring on 6 June '09
| 0000NNN000 Object | Risk Monitor | When Noted UTC | 0000T0000 Year Range | VI # | 000NN00 Prob Cum | T0000 PS Cum | T0000 PS Max | T S | Notes for Today's Latest Risk Assessments |
| 2009 KK | JPL Sentry | 2139 | 2022 | 1 | 1.2e-04 | -1.09 | -1.09 | 1 | JPL: "Analysis based on 95 observations spanning 18.844 days (2009-May-17.25987 to 2009-Jun-05.10357)." Diameter approximately 0.260 km. from mean, weighted H=20.5. |
| NEODyS | 1500 | 2022 | 1 | 1.16e-04 | -1.10 | -1.10 | 1 | NEODyS: "Based on 95 optical observations (of which 0 are rejected as outliers) from 2009/05/17.261 to 2009/06/05.104. NOTE: The Virtual Impactor in 2022/05/29.761 ... is rated as Torino Scale 1." | |
Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale
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 6 June '09
Times are UTC for when items were noted or added by The Tracking News.
| 2139 | Noted that JPL Sentry has updated its 2009 KK risk assessment - see above |
| 1500 | Noted that NEODyS has updated its 2009 KK risk assessment - see above Grabbed MPEC 2009-L22 - Daily Orbit Update - see above |
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