2009-06-13 Tracking News

Contents on 13 June '09

IAU Minor Planet Center
- NEOCP Activity -- two listings: 2 new
- New MPECs -- three MPECs
Observers -- eighteen observing facilities
Impact Risk Monitoring -- three objects
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 13 June '09

The MPC's NEO Confirmation Page has 2 listings: 2 new

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new listings. Both of these were "one nighters." So far The Tracking News has counted a total of five 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 13 June '09

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been three MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2009-L42 time-stamped "01:50 UT" - 2009 LS - see below
MPEC 2009-L43 time-stamped "06:06 UT" - Daily Orbit Update - see below
MPEC 2009-L44 time-stamped "15:28 UT" - 2009 LX

MPEC 2009-L44 - "15:28 UT" - 2009 LX

K09L00X 2009 LX (risk-listed, Q=4.832 AU, H=19.4 ~446m) was discovered at 1636 UT on 11 June by the Siding Spring Survey (SSS), which observed it at June 11.69-71p4, 11.76p1, 11.81-83p3, and 13.56-57p3.

<< DOU on 13 June '09 >> MPEC 2009-L43 - "06:06 UT" - Daily Orbit Update

Observations of risk-listed objects
K09K21T 2009 KT21 (arc=15 days, H=19.7 ~389m) from the Spacewatch 1.8m telescope (June 13.21p3)
Observations of recently (no longer) risk-listed objects
K09K03C 2009 KC3 (Q=5.453 AU, arc=39 days, H=17.8 ~933m) from Boambee Obs. (June 12.35-36p2)
Observations of almost-small asteroids (21.7<H<=22.0)
K09L00Q 2009 LQ (arc=2 days, H=21.8 ~148m) from Raheny Obs. (June 13.03p1)
Observations of other objects
K09K07M 2009 KM7 (arc=17 days, H=17.9 ~891m) from Spacewatch 1.8m (June 12.41-43p3)
K09J05R 2009 JR5 (arc=29 days, H=20.3 ~295m) from Spacewatch 1.8m (June 13.19-20p2)
K09J02M 2009 JM2 (arc=30 days, H=19.4 ~446m) from SSS (June 11.61-65p3)
K09J00R 2009 JR (arc=41 days, H=21.4 ~178m) from Spacewatch 1.8m (June 12.29-30p3 & 13.24p3)
K09H58V 2009 HV58 (i=47.0°, arc=49 days, H=19.6 ~407m) from Spacewatch 1.8m (June 12.25-26p3 & 13.22-23p3)
K09H44W 2009 HW44 (i=41.0°, Q=4.281 AU, arc=52 days, H=17.5 ~1.07 km) from Spacewatch 1.8m (June 13.18-19p3)
K09F04V 2009 FV4 (i=45.9°, arc=86 days, H=18.4 ~708m) from Spacewatch 1.8m (June 13.16p2)
K09D47E 2009 DE47 (arc=90 days, H=18.7 ~616m) from SSS (May 29.55-58p4)
K09B02L 2009 BL2 (arc=145 days, H=19.4 ~446m) from Fiamene Obs. (June 11.88-89p3)
K07B02T 2007 BT2 (arc=3 opp, H=17.1 ~1.29 km) from SSS (May 29.49-53p4)
K06H29R 2006 HR29 (arc=4 opp, H=20.7 ~245m) from the Catalina Sky Survey (CSS) (June 12.31-33p4)
K05M13O 2005 MO13 (arc=2 opp, H=20.8 ~234m) from CSS (June 12.41-43p4) and Fiamene Obs. (June 12.89-90p3)
K02L38T 2002 LT38 (arc=2 opp, H=20.1 ~323m) from SSS (May 28.68-69p2), Boambee Obs. (June 11.36-39p3 & 12.34-35p2), and Bigmuskie Obs. (June 12.86-87p3)
K02L00V 2002 LV (arc=3 opp, H=16.6 ~1.62 km) from Fiamene Obs. (June 11.86-87p4) and Castelmartini Obs. (June 12.92-93p3)
K00CA1O 2000 CO101 (arc=2 opp, H=19.2 ~490m) from SSS (May 29.79-81p2)
L5442 215442 2002 MQ3 from Bigmuskie Obs. (June 12.88-90p3) and Naef Obs. (June 12.93-95p3)
L4088 214088 2004 JN13 from CSS (June 12.22-24p3)
L2546 212546 2006 SV19 from Castelmartini Obs. (June 12.87p3)
K7945 207945 1991 JW from SSS (May 29.55-58p3) and Boambee Obs. (June 11.36-37p2 & 12.34-37p3)
G2181 162181 1999 LF6 from Fiamene Obs. (June 12.93p4)
F9399 159399 1998 UL1 from Naef Obs. (June 12.94-96p2)
F3311 153311 2001 MG1 from CSS (June 12.45-46p4)
F2560 152560 1991 BN from SSS (May 28.66-68p3 & June 11.61-63p3)
E3651 143651 2003 QO104 from Boambee Obs. (June 11.36-39p3 & 12.34-37p3)
D8883 138883 2000 YL29 from Naef Obs. (June 12.94-97p2)
85989 85989 1999 JD6 from Fiamene Obs. (June 12.92p3)
54660 54660 2000 UJ1 from Naef Obs. (June 12.97p1)
05620 5620 Jasonwheeler (1990 OA) from CSS (June 12.36-38p4) and the Spacewatch 0.9m telescope (June 12.43-46p3)
04954 4954 Eric (1990 SQ) from Boambee Obs. (June 11.35-38p3 & 12.33-36p3)
04953 4953 1990 MU from SSS (May 28.80p1)
03552 3552 Don Quixote (1983 SA) from Boambee Obs. (June 11.36-39p3 & 12.34-37p3)
03103 3103 Eger (1982 BB) from Fiamene Obs. (June 11.90p2)

MPEC 2009-L42 - "01:50 UT" - 2009 LS

K09L00S 2009 LS (risk-listed, i=47.0°, H=17.6 ~1.02 km) was discovered at 0922 UT on 12 June by CSS, which observed it at June 12.39-44p7. The discovery was confirmed by Farra d'Isonzo Obs. (June 12.87-90p3), Balzaretto Obs. (June 12.87-90p4), Starkenburg Obs. (June 12.89-90p3), Suno Obs. (June 12.90-91p3), Consell Obs. (June 12.91-92p5), Schiaparelli Obs. (June 12.94-95p3), Masquefa Obs. (June 12.94-97p5), Raheny Obs. (June 12.95-98p3), and Jaen Obs. (June 12.99p1).

Observers on 13 June '09

Eighteen observing facilities appear in today's MPECs.

Code	Observer / observatory
`A81`	Balzaretto Obs. in Italy, 1 in MPEC 2009-L42 -- 2009 LS
`B88`	Bigmuskie Obs. in Italy, 2 in MPEC 2009-L43 -- 2002 LT38, 215442
`432`	Boambee Obs. in New South Wales, 6 in MPEC 2009-L43 -- 2009 KC3, 2002 LT38, 207945, 143651, 4954, 3552
`160`	Castelmartini Obs. in Italy, 2 in MPEC 2009-L43 -- 2002 LV, 212546
`703`	Catalina Sky Survey (CSS) in Arizona, 6 in MPECs 2009-L42 & 2009-L43 -- 2009 LS, 2006 HR29, 2005 MO13, 214088, 153311, 5620
`176`	Consell Obs. in Spain, 1 in MPEC 2009-L42 -- 2009 LS
`595`	Farra d'Isonzo Obs. in Italy, 1 in MPEC 2009-L42 -- 2009 LS
`B23`	Fiamene Obs. in Italy, 6 in MPEC 2009-L43 -- 2009 BL2, 2005 MO13, 2002 LV, 85989, 162181, 3103
`J28`	Jaen Obs. in Spain, 1 in MPEC 2009-L42 -- 2009 LS
`232`	Masquefa Obs. in Spain, 1 in MPEC 2009-L42 -- 2009 LS
`A13`	Naef Obs. in Switzerland, 4 in MPEC 2009-L43 -- 54660, 215442, 159399, 138883
`J41`	Raheny Obs. in Ireland, 2 in MPECs 2009-L42 & 2009-L43 -- 2009 LS, 2009 LQ
`204`	Schiaparelli Obs. in Italy, 1 in MPEC 2009-L42 -- 2009 LS
`E12`	Siding Spring Survey (SSS) in New South Wales, 9 in MPECs 2009-L43 & 2009-L44 -- 2009 LX, 2009 JM2, 2009 DE47, 2007 BT2, 2002 LT38, 2000 CO101, 207945, 152560, 4953
`691`	Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2009-L43 -- 5620
`291`	Spacewatch 1.8m telescope in Arizona, 7 in MPEC 2009-L43 -- 2009 KT21, 2009 KM7, 2009 JR5, 2009 JR, 2009 HW44, 2009 HV58, 2009 FV4
`611`	Starkenburg Obs. in Germany, 1 in MPEC 2009-L42 -- 2009 LS
`147`	Suno Obs. in Italy, 1 in MPEC 2009-L42 -- 2009 LS

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

Impact Risk Monitoring on 13 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 LX	JPL Sentry	1816	2059-2098	4	1.6e-09	-6.25	-6.55	0	JPL: "Analysis based on 11 observations spanning 1.8757 days (2009-Jun-11.69171 to 2009-Jun-13.56741)." Diameter approximately 0.441 km. from mean, weighted H=19.4.

2009 LS	NEODyS	1525	2011-2090	48	9.86e-09	-3.65	-4.00	0	NEODyS: "Based on 37 optical observations (of which 0 are rejected as outliers) from 2009/06/12.391 to 2009/06/12.988."
2009 LS	JPL Sentry	0426	2033-2106	48	9.7e-08	-3.11	-4.16	0	JPL: "Analysis based on 37 observations spanning .59689 days (2009-Jun-12.39072 to 2009-Jun-12.98761)." Diameter approximately 1.000 km. from mean, weighted H=17.6.

2009 KT21	JPL Sentry	1525	R E M O V E D						JPL: Risk listing removed at 0848 UTC.
2009 KT21	NEODyS	1525	R E M O V E D						-

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 13 June '09

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

1816	Noted that JPL Sentry has posted 2009 LX as an impact risk - see above
1643	Grabbed MPEC 2009-L44 - 2009 LX - see above
1525	Noted that JPL Sentry has removed 2009 KT21 as an impact risk - see above Noted that NEODyS has removed 2009 KT21 as an impact risk - see above Noted that NEODyS has posted 2009 LS as an impact risk - see above Grabbed MPEC 2009-L43 - Daily Orbit Update - see above
0426	Noted that JPL Sentry has posted 2009 LS as an impact risk - see above
0305	Grabbed MPEC 2009-L42 - 2009 LS - see above

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