2008-06-21 Tracking News

Contents on 21 June '08

IAU Minor Planet Center
- NEOCP Activity -- none
- New MPECs -- one MPEC
Observers -- eight observing facilities
Impact Risk Monitoring -- two 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 21 June '08

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 (last checked at 2357 UTC).

New MPECs on 21 June '08

Minor Planet Electronic Circulars

As of last check at 2357 UTC, there has been one MPEC issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

<< DOU on 21 June '08 >> MPEC 2008-M22 - "06:05 UT" - Daily Orbit Update

Observations of risk-listed objects
K08L16V 2008 LV16 (arc=4 days, H=20.1 ~323m) from Magdalena Ridge Obs. (MRO) (June 19.36p3)
K08L02G 2008 LG2 (small asteroid, arc=16 days, H=25.2 ~31m) from Astronomical Research Obs. (ARO) (June 19.13p3)
Observations of recently (no longer) risk-listed objects
K08L08W 2008 LW8 (arc=10 days, H=17.2 ~1.23 km) from ARO (June 18.30-31p3)
K08K06D 2008 KD6 (arc=22 days, H=19.6 ~407m) from ARO (June 18.28-29p3) and Desert Moon Obs. (June 20.33-35p3)
K08J24O 2008 JO24 (arc=41 days, H=18.0 ~851m) from Desert Moon Obs. (June 20.41-43p3)
Observations of other objects
K08K02W 2008 KW2 (i=37.4°, arc=22 days, H=19.7 ~389m) from ARO (June 18.15-16p4)
K08J35T 2008 JT35 (Q=4.081 AU, arc=47 days, H=21.0 ~214m) from ARO (June 18.17-18p5) and Atlante Obs. (June 20.94p3)
K08J26R 2008 JR26 (arc=37 days, H=19.9 ~355m) from ARO (June 18.19-21p4)
K08J14P 2008 JP14 (arc=49 days, H=19.4 ~446m) from ARO (June 19.09-10p3)
K08H66E 2008 HE66 (arc=50 days, H=21.7 ~155m) from ARO (June 18.19-20p3)
K08H03S 2008 HS3 (arc=50 days, H=21.7 ~155m) from ARO (June 19.19-20p3)
K08G00X 2008 GX (arc=77 days, H=19.5 ~426m) from ARO (June 19.11-12p3)
K08E01J 2008 EJ1 (i=38.8°, arc=52 days, H=15.8 ~2.34 km, q=0.981 AU) from Tiki Obs. (March 26.38p1 & 26.47p1)
K07X16H 2007 XH16 (arc=193 days, H=19.7 ~389m) from ARO (June 18.25-26p3)
K07L00L 2007 LL (arc=2 opp, H=20.5 ~269m) from Mirasteilas Obs. (June 20.93-96p3) and Atlante Obs. (June 20.99-00p3)
K05T45U 2005 TU45 (arc=3 opp, H=17.1 ~1.29 km) from Mirasteilas Obs. (June 20.89-91p3)
K05G21P 2005 GP21 (arc=2 opp, H=19.9 ~355m) from the Spacewatch 1.8m telescope (Jan. 18.45p1)
K03B35T 2003 BT35 (i=57.3°, arc=3 opp, H=18.6 ~645m) from ARO (June 18.23-25p3)
K02M03Q 2002 MQ3 (i=36.3°, arc=3 opp, H=18.2 ~776m) from Desert Moon Obs. (June 20.16-21p3)
07482 7482 1994 PC1 from Iluro Obs. (June 21.11-12p3)
01917 1917 Cuyo (1968 AA) from Iluro Obs. (June 21.12-13p3)

Observers on 21 June '08

Eight observing facilities appear in today's MPEC.

Code	Observer / observatory
`H55`	Astronomical Research Obs. (ARO) in Illinois, 12 in MPEC 2008-M22 -- 2008 LW8, 2008 LG2, 2008 KW2, 2008 KD6, 2008 JT35, 2008 JR26, 2008 JP14, 2008 HS3, 2008 HE66, 2008 GX, 2007 XH16, 2003 BT35
`J51`	Atlante Obs. in the Canary Islands, 2 in MPEC 2008-M22 -- 2008 JT35, 2007 LL
`448`	Desert Moon Obs. in New Mexico, 3 in MPEC 2008-M22 -- 2008 KD6, 2008 JO24, 2002 MQ3
`B19`	Iluro Obs. in Spain, 2 in MPEC 2008-M22 -- 7482, 1917
`H01`	Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2008-M22 -- 2008 LV16
`B67`	Mirasteilas Obs. in Switzerland, 2 in MPEC 2008-M22 -- 2007 LL, 2005 TU45
`291`	Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2008-M22 -- 2005 GP21
`F85`	Tiki Obs. in Tahiti, 1 in MPEC 2008-M22 -- 2008 EJ1

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

Impact Risk Monitoring on 21 June '08

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2357 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.
Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090.
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

2008 LV16	NEODyS	1349	2022-2089	19	5.26e-07	-3.56	-4.19	0	NEODyS: "Based on 37 optical observations (of which 0 are rejected as outliers) from 2008/06/15.381 to 2008/06/19.362."
2008 LV16	JPL Sentry	1348	2021-2081	14	4.2e-07	-3.60	-4.08	0	JPL: "Analysis based on 37 observations spanning 3.9814 days (2008-Jun-15.3798 to 2008-Jun-19.36118)." Diameter approximately 0.348 km. from mean, weighted H=19.9.

2008 LG2	NEODyS	1349	2058-2089	13	2.78e-06	-6.01	-6.26	0	NEODyS: "Based on 106 optical observations (of which 0 are rejected as outliers) from 2008/06/03.318 to 2008/06/19.135."
2008 LG2	JPL Sentry	1348	2058-2108	14	6.9e-06	-5.67	-6.25	0	JPL: "Analysis based on 106 observations spanning 15.817 days (2008-Jun-03.31737 to 2008-Jun-19.134528)." Diameter approximately 0.030 km. from mean, weighted H=25.2.

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 21 June '08

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

1349	Noted that NEODyS has updated its 2008 LG2 risk assessment - see above Noted that NEODyS has updated its 2008 LV16 risk assessment - see above
1348	Noted that JPL Sentry has updated its 2008 LG2 risk assessment - see above Noted that JPL Sentry has updated its 2008 LV16 risk assessment - see above Grabbed MPEC 2008-M22 - Daily Orbit Update - see above

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