2009-06-20 Tracking News

Contents on 20 June '09

IAU Minor Planet Center
- NEOCP Activity -- eight listings: 2 new, 6 updated
- New MPECs -- one MPEC
Observers -- six 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 20 June '09

The MPC's NEO Confirmation Page has 8 listings: 2 new, 6 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and six updated listings. Of these, six were "one nighters."

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 20 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 20 June '09 >> MPEC 2009-M15 - "06:06 UT" - Daily Orbit Update

Observations of risk-listed objects
K09K08K 2009 KK8 (arc=22 days, H=19.0 ~537m) from the Spacewatch 1.8m telescope (June 19.45-46p3)
Observations of recently (no longer) risk-listed objects
K09L02W 2009 LW2 (arc=4 days, H=19.8 ~371m) from Astronomical Research Obs. (ARO) (June 19.29p3) and Spacewatch 1.8m (June 19.32-34p3)
K09L00S 2009 LS (i=44.9°, arc=7 days, H=17.9 ~891m) from ARO (June 19.12-13p4) and Spacewatch 1.8m (June 19.37-38p3)
K09K21T 2009 KT21 (arc=21 days, H=19.7 ~389m) from Spacewatch 1.8m (June 19.25-26p2)
K09K05D 2009 KD5 (arc=24 days, H=18.2 ~776m) from ARO (June 19.36-37p4)
K09K04T 2009 KT4 (almost small, arc=24 days, H=21.8 ~148m) from Spacewatch 1.8m (June 19.23-24p3)
K09K02L 2009 KL2 (arc=30 days, H=18.1 ~812m) from Petit Jean Mtn. South Obs. (PJMSO) (June 19.30p6)
Observations of small asteroids (H>22.0)
K09L02V 2009 LV2 (arc=4 days, H=22.4 ~112m) from ARO (June 19.14-15p3)
Observations of other objects
K09M00A 2009 MA (arc=3 days, H=21.4 ~178m) from ARO (June 19.14-15p3), Jim Young via Table Mtn. Obs. (June 19.18-20p4), and PJMSO (June 19.28-29p9)
K09K22J 2009 KJ22 (arc=19 days, H=20.0 ~339m) from ARO (June 19.32-34p4)
K09K07C 2009 KC7 (Q=4.053 AU, arc=23 days, H=19.3 ~467m) from ARO (June 19.34-35p3)
K09J01G 2009 JG1 (arc=46 days, H=20.8 ~234m) from ARO (June 19.11-13p4)
K09H82B 2009 HB82 (Q=4.414 AU, arc=57 days, H=17.6 ~1.02 km) from ARO (June 19.35-36p4)
K07L00L 2007 LL (arc=3 opp, H=20.3 ~295m) from ARO (June 19.26-27p5)
K04XG4P 2004 XP164 (arc=4 opp, H=17.4 ~1.12 km) from ARO (June 19.16-18p3 at V=22.0-22.2)
K04L02C 2004 LC2 (arc=2 opp, H=18.7 ~616m) from Spacewatch 1.8m (June 19.22-23p2)
K02L38T 2002 LT38 (arc=2 opp, H=20.3 ~295m) from PJMSO (June 19.16-17p6)
K02L00V 2002 LV (arc=3 opp, H=16.5 ~1.70 km) from PJMSO (June 19.30-31p5)
K01H07Y 2001 HY7 (arc=5 opp, H=20.5 ~269m) from ARO (June 19.24-25p3)
K00O22B 2000 OB22 (Q=4.252 AU, arc=4 opp, H=17.1 ~1.29 km) from ARO (June 19.17p3) and PJMSO (June 19.31-32p5)
G2181 162181 1999 LF6 from PJMSO (June 19.22p5)
52381 52381 1993 HA from ARO (June 19.20-21p3)
16834 16834 1997 WU22 from Jaen Obs. (June 20.11-12p2)
05869 5869 Tanith (1988 VN4) from the Spacewatch 0.9m telescope (June 19.20-22p3)

Observers on 20 June '09

Six observing facilities appear in today's MPEC.

Code	Observer / observatory
`H55`	Astronomical Research Obs. (ARO) in Illinois, 14 in MPEC 2009-M15 -- 2009 MA, 2009 LW2, 2009 LV2, 2009 LS, 2009 KJ22, 2009 KD5, 2009 KC7, 2009 JG1, 2009 HB82, 2007 LL, 2004 XP164, 2001 HY7, 2000 OB22, 52381
`J28`	Jaen Obs. in Spain, 1 in MPEC 2009-M15 -- 16834
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 6 in MPEC 2009-M15 -- 2009 MA, 2009 KL2, 2002 LV, 2002 LT38, 2000 OB22, 162181
`691`	Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2009-M15 -- 5869
`291`	Spacewatch 1.8m telescope in Arizona, 6 in MPEC 2009-M15 -- 2009 LW2, 2009 LS, 2009 KT4, 2009 KT21, 2009 KK8, 2004 LC2
`6735`	Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2009-M15 -- 2009 MA

For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring on 20 June '09

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2358 UTC)
See the CRT page for a list of all objects rated recently as risks and our ephemerides page for a list of risk-listed objects under current observation.
The time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090. Beginning Jan. 22nd, both are also posting impact solutions beyond 100 years for a few objects.
For the latest official risk assessments, and for explanations of the terminology, see the JPL NEO Program Sentry and NEODyS CLOMON (backup) risk pages.
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 KK8	NEODyS	1606	R E M O V E D						-
2009 KK8	JPL Sentry	1606	R E M O V E D						JPL: Risk listing removed at 0849 UTC.

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 20 June '09

Times are UTC for when items were noted or added by The Tracking News.

1606	Noted that JPL Sentry has removed 2009 KK8 as an impact risk - see above Noted that NEODyS has removed 2009 KK8 as an impact risk - see above Grabbed MPEC 2009-M15 - Daily Orbit Update - see above

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