2009-07-10 Tracking News

Contents on 10 July '09

Radar Astrometry -- one object
IAU Minor Planet Center
- NEOCP Activity -- none
- New MPECs -- four MPECs
Observers -- twelve observing facilities
Impact Risk Monitoring -- one object
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.

Radar Astrometry on 10 July '09

Radar observation of one object

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:

Data update noted at 2358 UTC when the database was dated 10 July

2008 EV5 from Arecibo (2008 Dec. 27.31 range) - see links

NEOCP Activity on 10 July '09

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 2358 UTC). It was last noted active on July 5th.

New MPECs on 10 July '09

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been four MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2009-N31 time-stamped "06:05 UT" - Daily Orbit Update - see below
MPEC 2009-N32 time-stamped "14:46 UT" - 2008 KV42 - see below
MPEC 2009-N33 time-stamped "18:50 UT" - Comet C/2009 G7, 2009 G8, 2009 H3, 2009 H4 (SOHO) - see below
MPEC 2009-N34 time-stamped "18:57 UT" - Comets C/2009 H5, 2009 H6, 2009 H7, 2009 H8 (SOHO)

MPEC 2009-N34 - "18:57 UT" - Comets C/2009 H5, 2009 H6, 2009 H7, 2009 H8 (SOHO)

CK09H080 C/2009 H8 from the LASCO Coronagraph 3 aboard the Solar & Heliospheric Obs. (SOHO) (April 24.47-53p8, 24.57-61p4 & 24.68-82p14)
CK09H070 C/2009 H7 from the LASCO Coronagraph 2 aboard the Solar & Heliospheric Obs. (SOHO) (April 24.24-33p12)
CK09H060 C/2009 H6 from SOHO C2 (April 23.98-10p18)
CK09H050 C/2009 H5 from SOHO C2 (April 22.35-43p12)

MPEC 2009-N33 - "18:50 UT" - Comet C/2009 G7, 2009 G8, 2009 H3, 2009 H4 (SOHO)

CK09H040 C/2009 H4 from SOHO C2 (April 19.48-60p16)
CK09H030 C/2009 H3 from SOHO C2 (April 18.50-64p18)
CK09G080 C/2009 G8 from SOHO C2 (April 13.96-10p20)
CK09G070 C/2009 G7 from SOHO C3 (April 13.49-53p6, 13.59-93p32 & 13.97-30p32) and SOHO C2 (April 14.29-38p14)

MPEC 2009-N32 - "14:46 UT" - 2008 KV42

K08K42V 2008 KV42 from Mauna Kea (2008 Sept. 24.23-24p2, March 27.59-62p2 & April 23.38-42p2) and Kitt Peak Natl. Obs. (KPNO) (June 21.32-36p2 & 22.33p1)

<< DOU on 10 July '09 >> MPEC 2009-N31 - "06:05 UT" - Daily Orbit Update

Observations of risk-listed objects
K09M09B 2009 MB9 (Q=5.003 AU, arc=10 days, H=18.7 ~616m) from the Siding Spring Survey (SSS) (July 7.39-40p6 & 8.43-44p2)
Observations of recently (no longer) risk-listed objects
K09M00S 2009 MS (i=52.4°, arc=17 days, H=16.0 ~2.14 km, q=0.864 AU) from Sormano Obs. (June 28.91-92p4)
Observations of small asteroids (H>22.0)
K09H21F 2009 HF21 (arc=2 days, H=26.2 ~19m) from Bisei Spaceguard Center (April 21.65-66p3)
K08N03P 2008 NP3 (arc=2 opp, H=23.3 ~74m) from SSS (July 9.54-59p23)
Observations of other objects
K09N00E 2009 NE (q=0.361 AU, Q=4.987 AU, arc=4 opp, H=15.7 ~2.45 km) from Doc Greiner Research Obs. (DGRO) (July 9.19p3) and Petit Jean Mtn. South Obs. (PJMSO) (July 9.29-30p7)
K09M09C 2009 MC9 (arc=9 days, H=17.9 ~891m) from SSS (July 7.54p1 & 8.66p2)
K09M06X 2009 MX6 (arc=14 days, H=19.0 ~537m) from SSS (July 8.48p1) and Sormano Obs. (July 8.87-88p5)
K09M00A 2009 MA (arc=23 days, H=21.6 ~162m) from Rio Cuarto Obs. (July 9.20-22p3)
K09K07M 2009 KM7 (arc=3 opp, H=17.9 ~891m) from Sergio Foglia & Maura Tombelli using the Siding Spring Digitized Sky Survey (1982 April 22.60-64p2) and NEAT's Mt. Palomar telescope (2002 April 30.22-26p3)
K09H21D 2009 HD21 (Q=4.668 AU, arc=107 days, H=18.2 ~776m) from Sormano Obs. (July 8.90-91p2)
K09D01F 2009 DF1 (arc=103 days, H=20.6 ~257m) from Bisei (May 1.60-61p4)
K05S19G 2005 SG19 (Q=4.171 AU, arc=2 opp, H=16.6 ~1.62 km) from Rio Cuarto Obs. (July 9.40-41p3)
K02L00V 2002 LV (arc=3 opp, H=16.6 ~1.62 km) from DGRO (July 9.20-21p8) and PJMSO (July 9.26-27p5)
F4229 154229 2002 JN97 from Rio Cuarto Obs. (July 9.32-34p4)
F2560 152560 1991 BN from SSS (July 7.46-48p2)
A8519 108519 2001 LF from SSS (July 7.43p1)
05693 5693 1993 EA from SSS (July 8.39p1)
04015 4015 Wilson-Harrington (1979 VA) from SSS (July 8.51p1)
03554 3554 Amun (1986 EB) from SSS (July 1.42p1)
01863 1863 Antinous (1948 EA) from SSS (July 1.37p1)
01036 1036 Ganymed (1924 TD) from SSS (July 1.37-38p4)

Observers on 10 July '09

Twelve observing facilities appear in today's MPECs.

Code	Observer / observatory
`251`	Arecibo in Puerto Rico, 1 in radar -- 2008 EV5
`300`	Bisei Spaceguard Center in Japan, 2 in MPEC 2009-N31 -- 2009 HF21, 2009 DF1
`H26`	Doc Greiner Research Obs. (DGRO) in Wisconsin, 2 in MPEC 2009-N31 -- 2009 NE, 2002 LV
`695`	Kitt Peak Natl. Obs. in Arizona, 1 in MPEC 2009-N32 -- 2008 KV42
`568`	Mauna Kea in Hawaii, 1 in MPEC 2009-N32 -- 2008 KV42
`644`	NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2009-N31 -- 2009 KM7
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 2 in MPEC 2009-N31 -- 2009 NE, 2002 LV
`I20`	Rio Cuarto Obs. in Argentina, 3 in MPEC 2009-N31 -- 2009 MA, 2005 SG19, 154229
`260_`	Sergio Foglia & Maura Tombelli in Italy using the Siding Spring Digitized Sky Survey in New South Wales, 1 in MPEC 2009-N31 -- 2009 KM7
`E12`	Siding Spring Survey (SSS) in New South Wales, 11 in MPEC 2009-N31 -- 2009 MX6, 2009 MC9, 2009 MB9, 2008 NP3, 152560, 108519, 5693, 4015, 3554, 1863, 1036
`2492`	LASCO Coronagraph 2 (SOHO C2) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 7 in MPECs 2009-N33 & 2009-N34 -- C/2009 H7, C/2009 H6, C/2009 H5, C/2009 H4, C/2009 H3, C/2009 G8, C/2009 G7
`2493`	LASCO Coronagraph 3 (SOHO C3) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 2 in MPECs 2009-N33 & 2009-N34 -- C/2009 H8, C/2009 G7
`587`	Sormano Obs. in Italy, 3 in MPEC 2009-N31 -- 2009 MX6, 2009 MS, 2009 HD21

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

Impact Risk Monitoring on 10 July '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 MB9	JPL Sentry	1400	2037	1	2.9e-09	-5.28	-5.28	0	JPL: "Analysis based on 32 observations spanning 9.6712 days (2009-Jun-29.47208 to 2009-Jul-09.14333)." Diameter approximately 0.640 km. from mean, weighted H=18.6.
2009 MB9	NEODyS	1400	2037	1	3.54e-09	-4.96	-4.96	0	NEODyS: "Based on 32 optical observations (of which 0 are rejected as outliers) from 2009/06/29.473 to 2009/07/09.144."

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 10 July '09

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

2358	Noted Radar Astrometry database update - see above
2006	Grabbed MPEC 2009-N34 - Comets C/2009 H5, 2009 H6, 2009 H7, 2009 H8 (SOHO) - see above
1900	Grabbed MPEC 2009-N33 - Comet C/2009 G7, 2009 G8, 2009 H3, 2009 H4 (SOHO) - see above
1501	Grabbed MPEC 2009-N32 - 2008 KV42 - see above
1400	Noted that JPL Sentry has updated its 2009 MB9 risk assessment - see above Noted that NEODyS has updated its 2009 MB9 risk assessment - see above Grabbed MPEC 2009-N31 - Daily Orbit Update - see above

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