2009-06-14 Tracking News

Contents on 14 June '09

IAU Minor Planet Center
- NEOCP Activity -- four listings: 2 new, 2 updated
- New MPECs -- one MPEC
Observers -- 23 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 14 June '09

The MPC's NEO Confirmation Page has 4 listings: 2 new, 2 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and two updated listings. All of these were "one nighters." So far The Tracking News has counted a total of six 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 14 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 14 June '09 >> MPEC 2009-L45 - "06:06 UT" - Daily Orbit Update

Observations of risk-listed objects
K09L00S 2009 LS (i=47.2°, arc=2 days, H=17.6 ~1.02 km) from Siegen Obs. (June 13.01-04p2), the Spacewatch 1.8m telescope (June 13.25p3), Sormano Obs. (June 13.91-92p3), and Alter Satzberg Obs. (June 13.95-97p3)
K09K08K 2009 KK8 (arc=16 days, H=18.9 ~562m) from Farpoint Obs. (June 13.39-41p2)
Observations of recently (no longer) risk-listed objects
K09K03C 2009 KC3 (Q=5.454 AU, arc=40 days, H=17.9 ~891m) from Rio Cuarto Obs. (June 13.19-20p3) and the Siding Spring Survey (SSS) (June 13.40-43p3)
K09K02L 2009 KL2 (arc=25 days, H=18.1 ~812m) from Piszkesteto Sta. (June 13.87-88p3), Naef Obs. (June 13.91-93p2), Verona Obs. (June 13.91-93p3), and Madonna di Dossobuono Obs. (June 13.92-93p3)
Observations of almost-small asteroids (21.7<H<=22.0)
K09L00Q 2009 LQ (arc=3 days, H=21.8 ~148m) from Alter Satzberg Obs. (June 13.87-89p4), Sormano Obs. (June 13.88-89p3), and Verona Obs. (June 13.89-90p4)
K09H21C 2009 HC21 (arc=55 days, H=22.0 ~135m) from Spacewatch 1.8m (June 14.20-21p3 at V=22.8)
Observations of other objects
K09K22J 2009 KJ22 (arc=14 days, H=20.1 ~323m) from Suno Obs. (June 14.07p2)
K09K07C 2009 KC7 (Q=4.052 AU, arc=18 days, H=19.3 ~467m) from Guidestar Obs. (June 13.97-99p3), Sormano Obs. (June 14.01-02p4), and Suno Obs. (June 14.05-06p2)
K09K03D 2009 KD3 (arc=7 days, H=21.4 ~178m) from SSS (May 30.56p1)
K09H82C 2009 HC82 (i=154.5°, Q=4.568 AU, arc=46 days, H=16.1 ~2.04 km, q=0.487 AU) from Spacewatch 1.8m (June 14.19-20p3)
K09H77V 2009 HV77 (arc=54 days, H=20.8 ~234m) from Rio Cuarto Obs. (June 13.07-08p3)
K09E02Q 2009 EQ2 (arc=99 days, H=20.8 ~234m) from Naef Obs. (June 13.89-92p2)
K09E02O 2009 EO2 (arc=101 days, H=19.6 ~407m) from Spacewatch 1.8m (June 14.16-17p3)
K09B02L 2009 BL2 from Fiamene Obs. (June 12.86-87p4)
K08W64M 2008 WM64 (arc=202 days, H=20.6 ~257m) from Guidestar Obs. (June 14.02-04p3)
K05M13O 2005 MO13 (arc=2 opp, H=20.7 ~245m) from the Catalina Sky Survey (CSS) (June 13.28-34p8)
K02L00V 2002 LV (arc=3 opp, H=16.5 ~1.70 km) from Atlante Obs. (June 14.01-02p3)
K01F90E 2001 FE90 (arc=2 opp, H=20.0 ~339m) from Suno Obs. (June 13.90-91p2)
K00K44N 2000 KN44 (Q=4.247 AU, arc=2 opp, H=18.5 ~676m) from La Sagra Obs. (May 5.11-14p3)
L5442 215442 2002 MQ3 from Zonalunar Obs. (June 12.90p1) and Capannoli Obs. (June 14.04p2)
L4088 214088 2004 JN13 from the Spacewatch 0.9m telescope (June 13.16-19p3)
L2546 212546 2006 SV19 from Zonalunar Obs. (June 12.95p1 & 13.00p1)
G2181 162181 1999 LF6 from Atlante Obs. (June 13.97-98p3)
D8911 138911 2001 AE2 from Zonalunar Obs. (June 10.92p1) and Tentlingen Obs. (June 12.90-94p4)
86829 86829 2000 GR146 from Zonalunar Obs. (June 13.04p1)
85989 85989 1999 JD6 from San Benedetto Po Obs. (June 10.92p4)
15745 15745 1991 PM5 from Atlante Obs. (June 14.05-06p3)
05620 5620 Jasonwheeler (1990 OA) from San Benedetto Po Obs. (June 10.90-91p3) and Purple Mtn. Obs. XuYi Station (XuYi Sta.) (June 12.59-65p4)
04954 4954 Eric (1990 SQ) from SSS (May 30.51-54p4)

Observers on 14 June '09

A total of 23 observing facilities appear in today's MPEC.

Code	Observer / observatory
`B03`	Alter Satzberg Obs. in Austria, 2 in MPEC 2009-L45 -- 2009 LS, 2009 LQ
`J51`	Atlante Obs. in the Canary Islands, 3 in MPEC 2009-L45 -- 2002 LV, 162181, 15745
`B09`	Capannoli Obs. in Italy, 1 in MPEC 2009-L45 -- 215442
`703`	Catalina Sky Survey in Arizona, 1 in MPEC 2009-L45 -- 2005 MO13
`734`	Farpoint Obs. in Kansas, 1 in MPEC 2009-L45 -- 2009 KK8
`B23`	Fiamene Obs. in Italy, 1 in MPEC 2009-L45 -- 2009 BL2
`A17`	Guidestar Obs. in Germany, 2 in MPEC 2009-L45 -- 2009 KC7, 2008 WM64
`J75`	La Sagra Obs. in Spain, 1 in MPEC 2009-L45 -- 2000 KN44
`560`	Madonna di Dossobuono Obs. in Italy, 1 in MPEC 2009-L45 -- 2009 KL2
`A13`	Naef Obs. in Switzerland, 2 in MPEC 2009-L45 -- 2009 KL2, 2009 EQ2
`561`	Piszkesteto Sta. in Hungary, 1 in MPEC 2009-L45 -- 2009 KL2
`D29`	Purple Mtn. Obs. XuYi Station in China, 1 in MPEC 2009-L45 -- 5620
`I20`	Rio Cuarto Obs. in Argentina, 2 in MPEC 2009-L45 -- 2009 KC3, 2009 HV77
`434`	San Benedetto Po Obs. in Italy, 2 in MPEC 2009-L45 -- 85989, 5620
`E12`	Siding Spring Survey (SSS) in New South Wales, 3 in MPEC 2009-L45 -- 2009 KD3, 2009 KC3, 4954
`510`	Siegen Obs. in Germany, 1 in MPEC 2009-L45 -- 2009 LS
`587`	Sormano Obs. in Italy, 3 in MPEC 2009-L45 -- 2009 LS, 2009 LQ, 2009 KC7
`691`	Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2009-L45 -- 214088
`291`	Spacewatch 1.8m telescope in Arizona, 4 in MPEC 2009-L45 -- 2009 LS, 2009 HC82, 2009 HC21, 2009 EO2
`147`	Suno Obs. in Italy, 3 in MPEC 2009-L45 -- 2009 KJ22, 2009 KC7, 2001 FE90
`A16`	Tentlingen Obs. in Switzerland, 1 in MPEC 2009-L45 -- 138911
`A48`	Verona Obs. in Italy, 2 in MPEC 2009-L45 -- 2009 LQ, 2009 KL2
`J08`	Zonalunar Obs. in Spain, 4 in MPEC 2009-L45 -- 86829, 215442, 212546, 138911

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

Impact Risk Monitoring on 14 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	NEODyS	1509	2071-2088	2	3.25e-11	-7.92	-8.10	0	NEODyS: "Based on 11 optical observations (of which 0 are rejected as outliers) from 2009/06/11.692 to 2009/06/13.568."

2009 LS	JPL Sentry	1509	2017-2107	35	6.1e-08	-3.02	-3.50	0	JPL: "Analysis based on 48 observations spanning 1.5820 days (2009-Jun-12.39072 to 2009-Jun-13.972687)." Diameter approximately 1.100 km. from mean, weighted H=17.5.
2009 LS	NEODyS	1509	2017-2085	26	9.42e-08	-2.80	-3.15	0	NEODyS: "Based on 48 optical observations (of which 0 are rejected as outliers) from 2009/06/12.391 to 2009/06/13.973."

2009 KK8	JPL Sentry	1509	2042	1	4.6e-08	-4.32	-4.32	0	JPL: "Analysis based on 33 observations spanning 15.972 days (2009-May-28.43417 to 2009-Jun-13.406)." Diameter approximately 0.560 km. from mean, weighted H=18.9.
2009 KK8	NEODyS	1509	2050	1	3.74e-09	-5.51	-5.51	0	NEODyS: "Based on 33 optical observations (of which 0 are rejected as outliers) from 2009/05/28.435 to 2009/06/13.407."

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 14 June '09

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

1509

Noted that JPL Sentry has updated its 2009 KK8 risk assessment - see above
Noted that NEODyS has updated its 2009 KK8 risk assessment - see above
Noted that JPL Sentry has updated its 2009 LS risk assessment - see above
Noted that NEODyS has updated its 2009 LS risk assessment - see above
Noted that NEODyS has posted 2009 LX as an impact risk - see above
Grabbed MPEC 2009-L45 - Daily Orbit Update - see above

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