2008-06-07 Tracking News

Contents on 7 June '08

IAU Minor Planet Center
- NEOCP Activity -- three listings: 1 new, 2 updated
- New MPECs -- one MPEC
Observers -- twelve observing facilities
Impact Risk Monitoring -- six 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

NOTE: These news pages will update less often and at irregular intervals through June 12th.

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 7 June '08

The MPC's NEO Confirmation Page has 3 listings: 1 new, 2 updated

When last checked at 2357 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and two updated listings. All of these were "one nighters." So far The Tracking News has counted a total of six objects listed on the NEOCP at some point today.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object by Birtwhistle et al. at Suno Observatory.

New MPECs on 7 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 7 June '08 >> MPEC 2008-L30 - "06:08 UT" - Daily Orbit Update

Observations of risk-listed objects
K08L02G 2008 LG2 (small asteroid, arc=4 days, H=25.4 ~28m) from Tiki Obs. (June 6.32-34p2), the Spacewatch 1.8m telescope (June 6.41-42p3), Bergen-Enkheim Obs. (June 6.96-98p6), and Great Shefford Obs. (June 7.07p3)
K08L00B 2008 LB (small asteroid, arc=6 days, H=26.1 ~20m) from program code 6 via Faulkes Telescope North (June 6.41p3) and Great Shefford Obs. (June 7.05p3)
K08L00A 2008 LA (small asteroid, arc=5 days, H=23.2 ~78m) from Spacewatch 1.8m (June 6.23-24p3)
K08K11N 2008 KN11 (small asteroid, arc=7 days, H=23.2 ~78m) from Spacewatch 1.8m (June 6.34p3) and Jim Bedient via Faulkes Telescope North (June 6.37-39p3)
K08K05Z 2008 KZ5 (arc=8 days, H=19.9 ~355m) from Spacewatch 1.8m (June 6.31-32p3) and Bedient/Faulkes North (June 6.36-38p3)
K08H04U 2008 HU4 (small asteroid, arc=37 days, H=28.4 ~7m) from Spacewatch 1.8m (June 6.40-41p2)
Observations of recently (no longer) risk-listed objects
K08K02X 2008 KX2 (small asteroid, arc=8 days, H=25.1 ~32m) from Faulkes North/code 6 (June 6.40p2) and Faulkes Telescope South (June 6.51p2)
K08J19V 2008 JV19 (arc=30 days, H=20.7 ~245m) from Spacewatch 1.8m (June 7.19-20p3)
K08H38B 2008 HB38 (arc=37 days, H=21.1 ~204m) from the Catalina Sky Survey (CSS) (June 6.19-22p4)
Observations of small asteroids (H>22.0)
K08L02H 2008 LH2 (arc=3 days, H=24.4 ~45m) from Great Shefford Obs. (June 7.07p3)
K08L00C 2008 LC (arc=5 days, H=24.4 ~45m) from Spacewatch 1.8m (June 6.28-29p3)
K08F07K 2008 FK7 (arc=58 days, H=23.1 ~81m) from David Tholen's team on Mauna Kea (May 20.49p2)
Observations of other objects
K08K28V 2008 KV28 (arc=6 days, H=20.1 ~323m) from Spacewatch 1.8m (June 6.27-28p3)
K08K06E 2008 KE6 (arc=8 days, H=20.6 ~257m) from Spacewatch 1.8m (June 6.45-47p3)
K08K02W 2008 KW2 (i=37.4°, arc=10 days, H=19.7 ~389m) from Greiner Research Obs. (GRO) (June 7.13-14p10)
K08K00Q 2008 KQ (arc=10 days, H=20.6 ~257m) from Spacewatch 1.8m (June 6.33p3)
K08K00P 2008 KP (i=60.2°, q=0.231 AU, arc=11 days, H=18.9 ~562m) from Jornada Obs. (June 7.20-22p3)
K08J26R 2008 JR26 (arc=24 days, H=19.9 ~355m) from CSS (June 6.25-27p4)
K08J19W 2008 JW19 (arc=29 days, H=20.8 ~234m) from Spacewatch 1.8m (June 6.18-19p3)
K08J19T 2008 JT19 (arc=30 days, H=20.0 ~339m) from Spacewatch 1.8m (June 6.25-26p3)
K08J14Q 2008 JQ14 (arc=32 days, H=19.2 ~490m) from Tiki Obs. (June 6.24-29p3)
K08E69D 2008 ED69 (i=36.3°, Q=5.048 AU, arc=88 days, H=16.9 ~1.41 km) from Great Shefford Obs. (June 7.08p2)
K07V04Q 2007 VQ4 (arc=3 opp, H=16.2 ~1.95 km) from GRO (June 7.13p6)
K07L00L 2007 LL (arc=2 opp, H=20.5 ~269m) from GRO (June 7.20-21p21)
K05U05Y 2005 UY5 (arc=2 opp, H=18.6 ~645m) from Las Campanas Obs. (June 6.19-21p8)
G2039 162039 1996 JG from CSS (June 6.16-18p4)
A2873 102873 1999 WK11 from CSS (June 6.19-22p4)
85236 85236 1993 KH from the Mt. Lemmon Survey (MLS) (June 6.16-18p3)
65996 65996 1998 MX5 from CSS (June 6.41-42p3)
07482 7482 1994 PC1 from CSS (June 6.38-40p3)

Observers on 7 June '08

Twelve observing facilities appear in today's MPEC.

Code	Observer / observatory
`A74`	Bergen-Enkheim Obs. in Germany, 1 in MPEC 2008-L30 -- 2008 LG2
`703`	Catalina Sky Survey (CSS) in Arizona, 6 in MPEC 2008-L30 -- 2008 JR26, 2008 HB38, 65996, 162039, 102873, 7482
`F654`	Jim Bedient in Hawaii via Faulkes Telescope North in Hawaii, 2 in MPEC 2008-L30 -- 2008 KZ5, 2008 KN11
`F656`	program code 6 via Faulkes Telescope North in Hawaii, 2 in MPEC 2008-L30 -- 2008 LB, 2008 KX2
`E10`	Faulkes Telescope South in New South Wales, 1 in MPEC 2008-L30 -- 2008 KX2
`J95`	Great Shefford Obs. in England, 4 in MPEC 2008-L30 -- 2008 LH2, 2008 LG2, 2008 LB, 2008 ED69
`H51`	Greiner Research Obs. (GRO) in Wisconsin, 3 in MPEC 2008-L30 -- 2008 KW2, 2007 VQ4, 2007 LL
`715`	Jornada Obs. in New Mexico, 1 in MPEC 2008-L30 -- 2008 KP
`304`	Las Campanas Obs. in Chile, 1 in MPEC 2008-L30 -- 2005 UY5
`5682`	David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-L30 -- 2008 FK7
`G96`	Mt. Lemmon Survey in Arizona, 1 in MPEC 2008-L30 -- 85236
`291`	Spacewatch 1.8m telescope in Arizona, 12 in MPEC 2008-L30 -- 2008 LG2, 2008 LC, 2008 LA, 2008 KZ5, 2008 KV28, 2008 KQ, 2008 KN11, 2008 KE6, 2008 JW19, 2008 JV19, 2008 JT19, 2008 HU4
`F85`	Tiki Obs. in Tahiti, 2 in MPEC 2008-L30 -- 2008 LG2, 2008 JQ14

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

Impact Risk Monitoring on 7 June '08

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS at 2336 and JPL at 2342 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 LG2	NEODyS	1310	2036-2088	18	6.19e-05	-4.57	-4.58	0	NEODyS: "Based on 25 optical observations (of which 0 are rejected as outliers) from 2008/06/03.318 to 2008/06/07.069."
2008 LG2	JPL Sentry	1309	2034-2105	30	6.0e-05	-4.60	-4.63	0	JPL: "Analysis based on 25 observations spanning 3.7513 days (2008-Jun-03.31737 to 2008-Jun-07.06871)." Diameter approximately 0.029 km. from mean, weighted H=25.3.

2008 LB	NEODyS	1310	2064	1	1.42e-08	-8.44	-8.44	0	NEODyS: "Based on 25 optical observations (of which 0 are rejected as outliers) from 2008/06/01.274 to 2008/06/07.050."
2008 LB	JPL Sentry	1309	2064	1	9.2e-10	-9.63	-9.63	0	JPL: "Analysis based on 25 observations spanning 5.7764 days (2008-Jun-01.27329 to 2008-Jun-07.04967)." Diameter approximately 0.020 km. from mean, weighted H=26.1.

2008 LA	JPL Sentry	1309	2027-2095	65	4.3e-05	-3.58	-4.20	0	JPL: "Analysis based on 32 observations spanning 5.0723 days (2008-Jun-01.16922 to 2008-Jun-06.24156)." Diameter approximately 0.075 km. from mean, weighted H=23.3.
2008 LA	NEODyS	1309	2015-2088	85	4.14e-05	-3.59	-4.22	0	NEODyS: "Based on 32 optical observations (of which 0 are rejected as outliers) from 2008/06/01.170 to 2008/06/06.242."

2008 KN11	JPL Sentry	1309	2037-2046	5	6.6e-07	-5.09	-5.41	0	JPL: "Analysis based on 62 observations spanning 7.0519 days (2008-May-30.33435 to 2008-Jun-06.38622)." Diameter approximately 0.078 km. from mean, weighted H=23.2.
2008 KN11	NEODyS	1309	2037-2046	7	6.84e-07	-5.07	-5.40	0	NEODyS: "Based on 62 optical observations (of which 0 are rejected as outliers) from 2008/05/30.335 to 2008/06/06.387."

2008 KZ5	JPL Sentry	1309	R E M O V E D						JPL: Risk listing removed at 0853 UTC.

2008 HU4	JPL Sentry	1309	2054-2079	3	1.0e-06	-7.98	-8.13	0	JPL: "Analysis based on 67 observations spanning 37.083 days (2008-Apr-30.32444 to 2008-Jun-06.40759)." Diameter approximately 0.007 km. from mean, weighted H=28.4.
2008 HU4	NEODyS	1309	2065-2079	7	5.14e-06	-7.30	-7.73	0	NEODyS: "Based on 67 optical observations (of which 0 are rejected as outliers) from 2008/04/30.325 to 2008/06/06.408."

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 7 June '08

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

1310

Noted that NEODyS has updated its 2008 LB risk assessment - see above
Noted that NEODyS has updated its 2008 LG2 risk assessment - see above

1309

Noted that JPL Sentry has updated its 2008 HU4 risk assessment - see above
Noted that NEODyS has updated its 2008 HU4 risk assessment - see above
Noted that JPL Sentry has updated its 2008 KN11 risk assessment - see above
Noted that NEODyS has updated its 2008 KN11 risk assessment - see above
Noted that JPL Sentry has removed 2008 KZ5 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 LA risk assessment - see above
Noted that NEODyS has updated its 2008 LA risk assessment - see above
Noted that JPL Sentry has reposted 2008 LB as an impact risk - see above
Noted that JPL Sentry has updated its 2008 LG2 risk assessment - see above
Grabbed MPEC 2008-L30 - Daily Orbit Update - see above

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