2008-07-17 Tracking News

Contents on 17 July '08

IAU Minor Planet Center
- NEOCP Activity -- none
- New MPECs -- seven MPECs
Observers -- thirteen 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 17 July '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 (checked at 2359 UTC). It was last noted active on July 15th.

New MPECs on 17 July '08

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been seven MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2008-O03 time-stamped "06:07 UT" - Daily Orbit Update - see below
MPEC 2008-O04 time-stamped "23:12 UT" - Observable Comets - see below
MPEC 2008-O05 time-stamped "23:23 UT" - Distant Minor Planets - see below
MPEC 2008-O06 time-stamped "23:31 UT" - Atens and Apollos - see below
MPEC 2008-O07 time-stamped "23:31 UT" - Amors - see below
MPEC 2008-O08 time-stamped "23:31 UT" - Unusual Minor Planets - see below
MPEC 2008-O09 time-stamped "23:31 UT" - PHAs

MPEC 2008-O09 - "23:31 UT" - PHAs

MPEC 2008-O08 - "23:31 UT" - Unusual Minor Planets

MPEC 2008-O07 - "23:31 UT" - Amors

MPEC 2008-O06 - "23:31 UT" - Atens and Apollos

MPEC 2008-O05 - "23:23 UT" - Distant Minor Planets

MPEC 2008-O04 - "23:12 UT" - Observable Comets

<< DOU on 17 July '08 >> MPEC 2008-O03 - "06:07 UT" - Daily Orbit Update

Observations of risk-listed objects
K08N03Q 2008 NQ3 (arc=2 days, H=20.5 ~269m) from the Siding Spring Survey (SSS) (July 16.80-81p2)
K08N03O 2008 NO3 (Q=5.574 AU, arc=2 days, H=18.3 ~741m) from SSS (July 16.40-41p3)
Observations of recently (no longer) risk-listed objects
K08L16V 2008 LV16 (arc=31 days, H=20.2 ~309m) from Astronomical Research Obs. (ARO) (July 16.35-37p3)
Observations of small asteroids (H>22.0)
K08N03P 2008 NP3 (arc=2 days, H=23.5 ~68m) from SSS (July 16.65p3 & 16.83p2)
K08N00X 2008 NX (arc=14 days, H=24.8 ~37m) from ARO (July 16.27-28p3)
K08M01Q 2008 MQ1 (arc=16 days, H=24.2 ~49m) from Mirasteilas Obs. (July 16.02-05p3) and ARO (July 16.26p4)
Observations of other objects
K08N01S 2008 NS1 (Q=4.287 AU, arc=11 days, H=17.3 ~1.17 km) from SSS (July 16.39p2)
K08N00U 2008 NU (Q=5.294 AU, arc=15 days, H=17.5 ~1.07 km) from ARO (July 16.33-34p3)
K08M01U 2008 MU1 (i=40.8°, arc=16 days, H=19.5 ~426m) from SSS (July 16.48p2) and Naef Obs. (July 16.98-99p3)
K08M01R 2008 MR1 (arc=16 days, H=18.5 ~676m) from ARO (July 16.32-33p3) and Tiki Obs. (July 16.53p1 & 16.64p1)
K08M01N 2008 MN1 (i=37.2°, arc=17 days, H=20.1 ~323m) from SSS (July 16.79p2)
K08M01H 2008 MH1 (Q=4.270 AU, arc=18 days, H=18.3 ~741m) from SSS (July 16.42-43p2)
K08M00Z 2008 MZ from Tiki Obs. (July 15.50-52p2)
K08L16Q 2008 LQ16 (arc=31 days, H=20.3 ~295m) from ARO (July 15.18-19p3)
K08L08W 2008 LW8 (arc=37 days, H=17.3 ~1.17 km) from ARO (July 16.34-35p3)
K08K06D 2008 KD6 (arc=48 days, H=19.6 ~407m) from ARO (July 16.30-31p2)
K08K05Z 2008 KZ5 from ARO (July 15.17-19p4)
K08J35T 2008 JT35 (Q=4.080 AU, arc=72 days, H=21.3 ~186m) from ARO (July 16.22-23p3)
K08J26R 2008 JR26 from ARO (July 15.20-22p4)
K08J14Q 2008 JQ14 (arc=72 days, H=19.2 ~490m) from ARO (July 16.14-16p3)
K08J07Z 2008 JZ7 from ARO (July 15.10-11p4)
K08J00F 2008 JF from ARO (July 15.13-14p4)
K08H66E 2008 HE66 from ARO (July 15.13-15p4)
K08H03S 2008 HS3 from ARO (July 15.15-17p4)
K08E32B 2008 EB32 (arc=128 days, H=19.3 ~467m) from ARO (July 16.11-13p2)
K08B18T 2008 BT18 (arc=4 opp, H=18.3 ~741m) from SSS (July 16.65p7 & 16.84p3)
K07W04V 2007 WV4 from ARO (July 15.21-23p3)
K07L00L 2007 LL (arc=2 opp, H=20.5 ~269m) from ARO (July 16.12-13p3)
K05TH4J 2005 TJ174 (arc=5 opp, H=16.5 ~1.70 km) from ARO (July 16.11p1)
K05T45U 2005 TU45 (arc=3 opp, H=17.2 ~1.23 km) from ARO (July 16.17-18p4)
K05R34C 2005 RC34 (arc=2 opp, H=19.7 ~389m) from Great Shefford Obs. (July 15.91p3) and ARO (July 16.20-21p5)
K04T10G 2004 TG10 from Rothney Astrophysical Obs. (July 8.28-30p5)
K04N08L 2004 NL8 (Q=4.419 AU, arc=3 opp, H=17.1 ~1.29 km) from ARO (July 16.24-25p3)
K03X11E 2003 XE11 (arc=4 opp, H=17.5 ~1.07 km) from ARO (July 16.19-20p3)
K03O04B 2003 OB4 (Q=4.516 AU, arc=2 opp, H=19.2 ~490m) from Petit Jean Mtn. South Obs. (PJMSO) (July 16.29-30p6)
K02W11P 2002 WP11 (arc=3 opp, H=18.1 ~812m) from ARO (July 16.18-20p4)
K01XQ6W 2001 XW266 (arc=3 opp, H=19.5 ~426m) from ARO (July 16.16p4)
J99S05O 1999 SO5 from ARO (July 15.11-12p4)
H3689 173689 2001 PK9 from Linceo Obs. (July 16.01-02p2)
G2186 162186 1999 OP3 from Naef Obs. (July 16.94-95p2)
D7170 137170 1999 HF1 from Gualba Obs. (July 15.93p2)
90403 90403 2003 YE45 from Guidestar Obs. (July 15.89-91p4) and Modra Obs. (July 16.83-85p7)
87311 87311 2000 QJ1 from Mirasteilas Obs. (July 15.98-99p3)
35107 35107 1991 VH from Stonegate Obs. (July 14.12-19p4, 15.11-19p4 & 15.26-33p4)
11398 11398 1998 YP11 from PJMSO (July 16.31-32p5)
08567 8567 1996 HW1 from Gualba Obs. (July 15.90p2)
01917 1917 Cuyo (1968 AA) from Mirasteilas Obs. (July 15.95-96p3)

Observers on 17 July '08

Thirteen observing facilities appear in today's MPEC.

Code	Observer / observatory
`H55`	Astronomical Research Obs. (ARO) in Illinois, 27 in MPEC 2008-O03 -- 2008 NX, 2008 NU, 2008 MR1, 2008 MQ1, 2008 LW8, 2008 LV16, 2008 LQ16, 2008 KZ5, 2008 KD6, 2008 JZ7, 2008 JT35, 2008 JR26, 2008 JQ14, 2008 JF, 2008 HS3, 2008 HE66, 2008 EB32, 2007 WV4, 2007 LL, 2005 TU45, 2005 TJ174, 2005 RC34, 2004 NL8, 2003 XE11, 2002 WP11, 2001 XW266, 1999 SO5
`J95`	Great Shefford Obs. in England, 1 in MPEC 2008-O03 -- 2005 RC34
`442`	Gualba Obs. in Spain, 2 in MPEC 2008-O03 -- 137170, 8567
`A17`	Guidestar Obs. in Germany, 1 in MPEC 2008-O03 -- 90403
`J59`	Linceo Obs. in Spain, 1 in MPEC 2008-O03 -- 173689
`B67`	Mirasteilas Obs. in Switzerland, 3 in MPEC 2008-O03 -- 2008 MQ1, 87311, 1917
`118`	Modra Obs. in Slovakia, 1 in MPEC 2008-O03 -- 90403
`A13`	Naef Obs. in Switzerland, 2 in MPEC 2008-O03 -- 2008 MU1, 162186
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 2 in MPEC 2008-O03 -- 2003 OB4, 11398
`661`	Rothney Astrophysical Obs. in Alberta, 1 in MPEC 2008-O03 -- 2004 TG10
`E12`	Siding Spring Survey (SSS) in New South Wales, 8 in MPEC 2008-O03 -- 2008 NS1, 2008 NQ3, 2008 NP3, 2008 NO3, 2008 MU1, 2008 MN1, 2008 MH1, 2008 BT18
`H67`	Stonegate Obs. in Michigan, 1 in MPEC 2008-O03 -- 35107
`F85`	Tiki Obs. in Tahiti, 2 in MPEC 2008-O03 -- 2008 MZ, 2008 MR1

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

Impact Risk Monitoring on 17 July '08

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2359 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 NQ3	JPL Sentry	1437	R E M O V E D						JPL: Risk listing removed at 0850 UTC.

2008 NO3	JPL Sentry	1437	2032-2105	38	1.7e-07	-3.42	-4.00	0	JPL: "Analysis based on 12 observations spanning 2.0506 days (2008-Jul-14.36382 to 2008-Jul-16.41445)." Diameter approximately 0.730 km. from mean, weighted H=18.3.
2008 NO3	NEODyS	1437	2032-2090	24	1.19e-07	-3.54	-4.12	0	NEODyS: "Based on 12 optical observations (of which 0 are rejected as outliers) from 2008/07/14.365 to 2008/07/16.415."

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 July '08

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

2329	Grabbed MPEC 2008-O04 - Observable Comets - see above Grabbed MPEC 2008-O05 - Distant Minor Planets - see above Grabbed MPEC 2008-O06 - Atens and Apollos - see above Grabbed MPEC 2008-O07 - Amors - see above Grabbed MPEC 2008-O08 - Unusual Minor Planets - see above Grabbed MPEC 2008-O09 - PHAs - see above
1437	Noted that JPL Sentry has updated its 2008 NO3 risk assessment - see above Noted that NEODyS has updated its 2008 NO3 risk assessment - see above Noted that JPL Sentry has removed 2008 NQ3 as an impact risk - see above Grabbed MPEC 2008-O03 - Daily Orbit Update - see above

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