2008-06-17 Tracking News

Contents on 17 June '08

IAU Minor Planet Center
- NEOCP Activity -- one listing: 1 updated
- New MPECs -- three MPECs
Observers -- eight 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 17 June '08

The MPC's NEO Confirmation Page has 1 listing: 1 updated

When last checked at 2357 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one updated listing. This was a "one nighter."

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 17 June '08

Minor Planet Electronic Circulars

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

MPEC 2008-M09 time-stamped "06:08 UT" - Daily Orbit Update - see below
MPEC 2008-M10 time-stamped "15:41 UT" - Comets C/2008 H9, 2008 J10, 2008 J11, 2008 J12 (SOHO) - see below
MPEC 2008-M11 time-stamped "15:49 UT" - Comets C/2008 J13, 2008 J14, 2008 J15, 2008 J16 (SOHO)

MPEC 2008-M11 - "15:49 UT" - Comets C/2008 J13, 2008 J14, 2008 J15, 2008 J16 (SOHO)

CK08J160 C/2008 J16 from the LASCO Coronagraph 2 aboard the Solar & Heliospheric Obs. (SOHO) (May 14.38-46p14)
CK08J150 C/2008 J15 from SOHO C2 (May 13.06-19p20)
CK08J140 C/2008 J14 from the LASCO Coronagraph 3 aboard the Solar & Heliospheric Obs. (SOHO) (May 12.97-01p6, 13.07-20p14, 13.24-26p4, 13.32-39p8, 13.43-53p10, 13.57-61p6, 13.65-76p12, 13.80-85p6, 13.89-93p6 & 13.97-99p4) and SOHO C2 (May 14.02-21p28)
CK08J130 C/2008 J13 from SOHO C2 (May 12.02-17p22)

MPEC 2008-M10 - "15:41 UT" - Comets C/2008 H9, 2008 J10, 2008 J11, 2008 J12 (SOHO)

CK08J120 C/2008 J12 from SOHO C2 (May 7.96-33p50) and SOHO C3 (May 8.35-47p14)
CK08J110 C/2008 J11 from SOHO C2 (May 7.59-67p14)
CK08J100 C/2008 J10 from SOHO C2 (May 6.98-27p42)
CK08H090 C/2008 H9 from SOHO C2 (April 21.69-79p16)

<< DOU on 17 June '08 >> MPEC 2008-M09 - "06:08 UT" - Daily Orbit Update

Observations of risk-listed objects
K08L16W 2008 LW16 (arc=1 day, H=19.6 ~407m) from the Catalina Sky Survey (CSS) (June 16.40-41p4)
K08L16V 2008 LV16 (arc=1 day, H=19.8 ~371m) from Richard Miles via Faulkes Telescope North (June 16.59-60p4)
K08L00A 2008 LA (small asteroid, arc=10 days, H=23.2 ~78m) from David Tholen's team on Mauna Kea (June 8.44p2)
Observations of small asteroids (H>22.0)
K08L02H 2008 LH2 (arc=11 days, H=24.6 ~41m) from Astronomical Research Obs. (ARO) (June 15.26-27p3)
Observations of other objects
K08J35T 2008 JT35 (Q=4.084 AU, arc=41 days, H=21.0 ~214m) from ARO (June 15.25-26p5)
K08J26R 2008 JR26 (arc=33 days, H=20.0 ~339m) from ARO (June 15.23-24p3)
K08J14Q 2008 JQ14 (arc=41 days, H=19.2 ~490m) from ARO (June 15.18-19p3)
K08H03S 2008 HS3 (arc=46 days, H=21.7 ~155m) from ARO (June 15.27-29p5)
K08H03O 2008 HO3 (Q=4.800 AU, arc=47 days, H=18.0 ~851m) from ARO (June 15.15-17p3)
K08H02F 2008 HF2 (arc=51 days, H=19.6 ~407m) from Jim Young via Table Mtn. Obs. (June 17.18-20p4)
K08H01W 2008 HW1 (q=0.102 AU, Q=5.065 AU, arc=44 days, H=17.5 ~1.07 km) from Bornheim Obs. (April 30.96-97p3, May 4.93-94p3 & 5.94-95p4)
K08G20V 2008 GV20 (arc=65 days, H=18.6 ~645m) from ARO (June 15.12-14p3)
K08D00E 2008 DE (arc=108 days, H=19.6 ~407m) from Bornheim Obs. (April 30.94-95p4, May 4.95-96p3 & 5.96-97p3)
K05T45U 2005 TU45 (arc=3 opp, H=17.1 ~1.29 km) from ARO (June 15.31-32p3)
K05N07B 2005 NB7 (arc=3 opp, H=18.7 ~616m) from Bornheim Obs. (April 30.91-92p4, May 2.90-91p4 & 4.86-87p4)
K03F03U 2003 FU3 (arc=2 opp, H=20.9 ~224m) from Tiki Obs. (2007 May 9.23-27p3)
I4266 184266 2004 VW14 from Bornheim Obs. (May 4.90-92p4 & 5.91-93p4)
86667 86667 2000 FO10 from Bornheim Obs. (April 30.88-89p3 & May 2.86-87p2)
11398 11398 1998 YP11 from Bornheim Obs. (April 7.88-90p4, May 4.88-89p3 & 5.88-89p4)
01917 1917 Cuyo (1968 AA) from CSS (June 16.36-38p4)

Observers on 17 June '08

Eight observing facilities appear in today's MPECs.

Code	Observer / observatory
`H55`	Astronomical Research Obs. (ARO) in Illinois, 8 in MPEC 2008-M09 -- 2008 LH2, 2008 JT35, 2008 JR26, 2008 JQ14, 2008 HS3, 2008 HO3, 2008 GV20, 2005 TU45
`127`	Bornheim Obs. in Germany, 6 in MPEC 2008-M09 -- 2008 HW1, 2008 DE, 2005 NB7, 86667, 184266, 11398
`703`	Catalina Sky Survey (CSS) in Arizona, 2 in MPEC 2008-M09 -- 2008 LW16, 1917
`F656`	Richard Miles in England via Faulkes Telescope North in Hawaii, 1 in MPEC 2008-M09 -- 2008 LV16
`5682`	David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-M09 -- 2008 LA
`2492`	LASCO Coronagraph 2 (SOHO C2) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 8 in MPECs 2008-M10 & 2008-M11 -- C/2008 J16, C/2008 J15, C/2008 J14, C/2008 J13, C/2008 J12, C/2008 J11, C/2008 J10, C/2008 H9
`2493`	LASCO Coronagraph 3 (SOHO C3) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 2 in MPECs 2008-M10 & 2008-M11 -- C/2008 J14, C/2008 J12
`6735`	Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2008-M09 -- 2008 HF2
`F85`	Tiki Obs. in Tahiti, 1 in MPEC 2008-M09 -- 2003 FU3

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

Impact Risk Monitoring on 17 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 LW16	NEODyS	1354	2017-2087	10	6.71e-07	-3.20	-3.64	0	NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2008/06/15.382 to 2008/06/16.598."
2008 LW16	JPL Sentry	1353	2017-2107	131	1.1e-06	-2.85	-3.17	0	JPL: "Analysis based on 15 observations spanning 1.2157 days (2008-Jun-15.38141 to 2008-Jun-16.59712)." Diameter approximately 0.411 km. from mean, weighted H=19.6.

2008 LV16	NEODyS	1354	2011-2087	195	1.49e-06	-2.74	-3.45	0	NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2008/06/15.381 to 2008/06/16.603."
2008 LV16	JPL Sentry	1353	2011-2107	233	1.6e-06	-2.72	-3.41	0	JPL: "Analysis based on 19 observations spanning 1.2226 days (2008-Jun-15.3798 to 2008-Jun-16.602388)." Diameter approximately 0.362 km. from mean, weighted H=19.9.

2008 LA	NEODyS	1354	2037-2088	18	3.5e-05	-3.73	-4.09	0	NEODyS: "Based on 55 optical observations (of which 0 are rejected as outliers) from 2008/06/01.170 to 2008/06/11.233."
2008 LA	JPL Sentry	1353	2027-2093	21	3.4e-05	-3.74	-4.11	0	JPL: "Analysis based on 55 observations spanning 10.063 days (2008-Jun-01.16922 to 2008-Jun-11.23216)." Diameter approximately 0.076 km. from mean, weighted H=23.2.

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 17 June '08

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

1619	Grabbed MPEC 2008-M10 - Comets C/2008 H9, 2008 J10, 2008 J11, 2008 J12 (SOHO) - see above Grabbed MPEC 2008-M11 - Comets C/2008 J13, 2008 J14, 2008 J15, 2008 J16 (SOHO) - see above
1354	Noted that NEODyS has updated its 2008 LA risk assessment - see above
1353	Noted that JPL Sentry has updated its 2008 LA risk assessment - see above Noted that JPL Sentry has updated its 2008 LV16 risk assessment - see above Noted that NEODyS has posted 2008 LV16 as an impact risk - see above Noted that JPL Sentry has updated its 2008 LW16 risk assessment - see above Noted that NEODyS has posted 2008 LW16 as an impact risk - see above Grabbed MPEC 2008-M09 - Daily Orbit Update - see above

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