2009-05-14 Tracking News

Contents on 14 May '09

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.

NEOCP Activity on 14 May '09

The MPC's NEO Confirmation Page is currently empty

The NEOCP is currently empty. There were five listings noted earlier today.

New MPECs on 14 May '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-J56 time-stamped "06:06 UT" - Daily Orbit Update - see below
MPEC 2009-J57 time-stamped "16:55 UT" - 2009 JO2 - see below
MPEC 2009-J58 time-stamped "17:01 UT" - 2009 JQ2 - see below
MPEC 2009-J59 time-stamped "17:04 UT" - 2009 JR2

MPEC 2009-J59 - "17:04 UT" - 2009 JR2

K09J02R 2009 JR2 (small asteroid, H=22.6 ~102m) was discovered at 0701 UT on 13 May by the Mt. Lemmon Survey (MLS), which observed it at May 13.29-32p3, 13.37-40p4, and 14.28-31p4. The discovery was confirmed by the Spacewatch 1.8m telescope (May 14.20p1).

MPEC 2009-J58 - "17:01 UT" - 2009 JQ2

K09J02Q 2009 JQ2 (H=21.3 ~186m) was discovered at 0610 UT on 13 May by MLS, which observed it at May 13.26-35p8, 14.23-26p4, and 14.31-34p4. The discovery was confirmed by Remanzacco Obs. (May 13.95p1) and Spacewatch 1.8m (May 14.18-19p3).

MPEC 2009-J57 - "16:55 UT" - 2009 JO2

K09J02O 2009 JO2 (H=19.4 ~446m) was discovered at 0340 UT on 13 May by MLS, which observed it at May 13.15-17p4 and 14.15-17p7. The discovery was confirmed by Spacewatch 1.8m (May 14.14-16p3).

<< DOU on 14 May '09 >> MPEC 2009-J56 - "06:06 UT" - Daily Orbit Update

Observations of recently (no longer) risk-listed objects
K09H58V 2009 HV58 (i=46.9°, arc=18 days, H=19.5 ~426m) from Spacewatch 1.8m (May 13.46-47p3)
Observations of small asteroids (H>22.0)
K09J01M 2009 JM1 (arc=8 days, H=23.2 ~78m) from Spacewatch 1.8m (May 13.42p3)
Observations of other objects
K09J02M 2009 JM2 (arc=1 day, H=18.9 ~562m) from Moriyama Obs. (May 13.63-64p3) and Alter Satzberg Obs. (May 13.86-87p3)
K09J01L 2009 JL1 (arc=26 days, H=21.1 ~204m) from Desert Moon Obs. (May 13.33-36p3) and Spacewatch 1.8m (May 13.44p2)
K09J01K 2009 JK1 (arc=55 days, H=19.6 ~407m) from Desert Moon Obs. (May 13.39-41p3)
K09J00R 2009 JR (arc=10 days, H=21.2 ~195m) from MLS (May 13.29-32p4)
K09H82D 2009 HD82 (arc=19 days, H=21.7 ~155m) from Tenagra II Obs. (May 12.31-34p3 & 13.30-33p3) and Desert Moon Obs. (May 13.43-45p5)
K09D01F 2009 DF1 (arc=83 days, H=20.6 ~257m) from the Catalina Sky Survey (CSS) (May 13.27-29p4)
K08SF0W 2008 SW150 (arc=2 opp, H=19.4 ~446m) from MLS (May 13.26-28p4)
K08J19V 2008 JV19 (arc=2 opp, H=20.7 ~245m) from CSS (May 13.22-24p4)
K07B72F 2007 BF72 (arc=3 opp, H=19.7 ~389m) from MLS (May 13.26-28p4)
K05R01D 2005 RD1 (arc=2 opp, H=18.4 ~708m) from Desert Moon Obs. (May 13.18-25p3)
K00K44N 2000 KN44 (Q=4.247 AU, arc=2 opp, H=18.5 ~676m) from MLS (May 13.37-41p4)
H5706 175706 1996 FG3 from Desert Moon Obs. (May 13.15p4)
E3947 143947 2003 YQ117 from the Siding Spring Survey (SSS) (May 13.53-56p4)
90367 90367 2003 LC5 from CSS (May 13.25-26p4)
86666 86666 2000 FL10 from CSS (May 13.38-40p4)
85774 85774 1998 UT18 from CSS (May 13.27-29p4)
65803 65803 Didymos (1996 GT) from the Spacewatch 0.9m telescope (May 13.26-29p3)
54401 54401 2000 LM from Desert Moon Obs. (May 13.46-47p3)
40267 40267 1999 GJ4 from MLS (May 13.15-17p4)
39557 39557 Gielgud (1992 JG) from Andrushivka Obs. (April 27.84-87p4) and MLS (May 13.25-28p4)
37655 37655 Illapa (1994 PM) from CSS (May 13.30-32p4)
35396 35396 1997 XF11 from MLS (May 13.18-20p4)
31345 31345 1998 PG from Spacewatch 0.9m (May 13.26-29p3)
05693 5693 1993 EA from Andrushivka Obs. (April 19.82p3)
05620 5620 Jasonwheeler (1990 OA) from Goodricke-Pigott Obs. (May 13.31-34p3) and MLS (May 13.38-41p4)
03103 3103 Eger (1982 BB) from CSS (May 13.36-37p4)

Observers on 14 May '09

Twelve observing facilities appear in today's MPECs.

Code	Observer / observatory
`B03`	Alter Satzberg Obs. in Austria, 1 in MPEC 2009-J56 -- 2009 JM2
`A50`	Andrushivka Obs. in the Ukraine, 2 in MPEC 2009-J56 -- 39557, 5693
`703`	Catalina Sky Survey (CSS) in Arizona, 7 in MPEC 2009-J56 -- 2009 DF1, 2008 JV19, 90367, 86666, 85774, 37655, 3103
`448`	Desert Moon Obs. in New Mexico, 6 in MPEC 2009-J56 -- 2009 JL1, 2009 JK1, 2009 HD82, 2005 RD1, 54401, 175706
`683`	Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2009-J56 -- 5620
`900`	Moriyama Obs. in Japan, 1 in MPEC 2009-J56 -- 2009 JM2
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 11 in MPECs 2009-J56, 2009-J57, 2009-J58 & 2009-J59 -- 2009 JR2, 2009 JR, 2009 JQ2, 2009 JO2, 2008 SW150, 2007 BF72, 2000 KN44, 40267, 39557, 35396, 5620
`473`	Remanzacco Obs. in Italy, 1 in MPEC 2009-J58 -- 2009 JQ2
`E12`	Siding Spring Survey in New South Wales, 1 in MPEC 2009-J56 -- 143947
`691`	Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2009-J56 -- 65803, 31345
`291`	Spacewatch 1.8m telescope in Arizona, 6 in MPECs 2009-J56, 2009-J57, 2009-J58 & 2009-J59 -- 2009 JR2, 2009 JQ2, 2009 JO2, 2009 JM1, 2009 JL1, 2009 HV58
`926`	Tenagra II Obs. in Arizona, 1 in MPEC 2009-J56 -- 2009 HD82

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

Impact Risk Monitoring on 14 May '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 JL2	NEODyS	1321	2057-2085	4	8.85e-06	-5.59	-5.90	0	NEODyS: "Based on 53 optical observations (of which 2 are rejected as outliers) from 2009/05/12.387 to 2009/05/13.629."

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 14 May '09

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

1742	Grabbed MPEC 2009-J58 - 2009 JQ2 - see above Grabbed MPEC 2009-J59 - 2009 JR2 - see above
1741	Noted that the NEOCP has become empty
1700	Grabbed MPEC 2009-J57 - 2009 JO2 - see above
1321	Noted that NEODyS has posted 2009 JL2 as an impact risk - see above Grabbed MPEC 2009-J56 - Daily Orbit Update - see above

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