2009-03-16 Tracking News

Contents on 16 March '09

IAU Minor Planet Center
- NEOCP Activity -- six listings: 1 new, 5 updated
- New MPECs -- six MPECs
Observers -- nineteen 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 16 March '09

The MPC's NEO Confirmation Page has 6 listings: 1 new, 5 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and five updated listings. Of these, two were "one nighters." So far The Tracking News has counted a total of twelve listings 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 16 March '09

Minor Planet Electronic Circulars

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

MPEC 2009-F01 time-stamped "02:42 UT" - 2009 DD45 - see below
MPEC 2009-F02 time-stamped "06:08 UT" - Daily Orbit Update - see below
MPEC 2009-F03 time-stamped "16:34 UT" - 2009 EF3 - see below
MPEC 2009-F04 time-stamped "16:37 UT" - 2009 EG3 - see below
MPEC 2009-F05 time-stamped "16:40 UT" - 2009 EH3 - see below
MPEC 2009-F06 time-stamped "19:51 UT" - 2009 FA

MPEC 2009-F06 - "19:51 UT" - 2009 FA

K09F00A 2009 FA (i=42.8°, Q=4.647 AU, H=18.6 ~645m) was discovered at 1022 UT on 16 March by the Catalina Sky Survey (CSS), which observed it at March 16.43-45p4 and 16.50-51p4. The discovery was confirmed by Ernesto Guido via RAS Obs. Mayhill (March 16.48-50p3), Grove Creek Obs. (March 16.60-61p3), Eschenberg Obs. (March 16.78-79p7), and Modra Obs. (March 16.79-80p4).

MPEC 2009-F05 - "16:40 UT" - 2009 EH3

K09E03H 2009 EH3 (small asteroid, Earth MOID=2.0 LD, H=24.1 ~51m) was discovered at 0844 UT on 15 March by the Mt. Lemmon Survey (MLS), which observed it at March 15.32-39p8 and 16.29-31p4. The discovery was confirmed by Great Shefford Obs. (March 15.95-96p3), Jim Young via Table Mtn. Obs. (March 16.22-23p4), and Sabino Canyon Obs. (March 16.25-27p3).

MPEC 2009-F04 - "16:37 UT" - 2009 EG3

K09E03G 2009 EG3 (H=21.2 ~195m) was discovered at 0539 UT on 15 March by MLS, which observed it at March 15.20-26p8 and 16.25-28p4. The discovery was confirmed by the Spacewatch 1.8m telescope (March 16.21p3) and Young/Table Mtn. (March 16.26-28p4).

MPEC 2009-F03 - "16:34 UT" - 2009 EF3

K09E03F 2009 EF3 (H=21.6 ~162m) was discovered at 0525 UT on 15 March by the Spacewatch 0.9m telescope, which observed it at March 15.23-26p3. The discovery was confirmed by Spacewatch 1.8m (March 15.31-32p3 & 16.35-36p3), Astronomical Research Obs. (ARO) (March 15.32-33p3), Great Shefford Obs. (March 15.00-01p3), Sabino Canyon Obs. (March 16.28-30p3), Young/Table Mtn. (March 16.29-31p4), Sandlot Obs. (March 16.36-38p3), and MLS (March 16.40-43p4).

<< DOU on 16 Mar. '09 >> MPEC 2009-F02 - "06:08 UT" - Daily Orbit Update

Observations of risk-listed objects
K09E01K 2009 EK1 (arc=13 days, H=21.3 ~186m) from ARO (March 15.19-21p3) and Spacewatch 1.8m (March 15.32-33p3)
K09DB1O 2009 DO111 (small asteroid, arc=22 days, H=22.6 ~102m) from Great Shefford Obs. (March 15.88-89p3)
Observations of recently (no longer) risk-listed objects
K09E01E 2009 EE1 (small asteroid, arc=12 days, H=25.5 ~27m) from Spacewatch 1.8m (March 15.42p3)
K09D46L 2009 DL46 (arc=15 days, H=21.4 ~178m) from Spacewatch 1.8m (March 15.37-38p3)
K09D45A 2009 DA45 (small asteroid, arc=16 days, H=22.4 ~112m) from Spacewatch 1.8m (March 15.43-45p3)
K09D42V 2009 DV42 (arc=17 days, H=18.5 ~676m) from ARO (March 15.34-35p3)
K09D01F 2009 DF1 (arc=24 days, H=20.7 ~245m) from ARO (March 15.36-37p3)
K09C03B 2009 CB3 (q=0.294 AU, arc=39 days, H=19.5 ~426m) from ARO (March 15.35-36p8) and Spacewatch 1.8m (March 15.36-37p3)
Observations of small asteroids (H>22.0)
K09E01M 2009 EM1 (arc=12 days, H=22.9 ~89m) from ARO (March 15.28p3)
K09E01G 2009 EG1 (arc=12 days, H=23.6 ~65m) from CSS (March 15.21-23p3 & 15.28-29p4), Sabino Canyon Obs. (March 15.27p3), and ARO (March 15.29p4)
K09E01C 2009 EC1 (arc=14 days, H=22.8 ~93m) from Great Shefford Obs. (March 16.14-15p3)
K09E00R 2009 ER (arc=14 days, H=25.0 ~34m) from Great Shefford Obs. (March 16.09-10p3)
K09D45D 2009 DD45 (arc=7 days, H=25.8 ~23m) from the Siding Spring Survey (SSS) (March 2.42-46p22, 2.55p5, 2.63-67p19 & 2.72p5)
K09D01B 2009 DB1 (arc=24 days, H=23.0 ~85m) from Spacewatch 1.8m (March 15.26-27p3 at V=22.3-6)
K09C01T 2009 CT1 (arc=40 days, H=24.2 ~49m) from ARO (March 15.38-40p3)
Observations of almost-small asteroids (21.7<H<=22.0)
K09C05R 2009 CR5 (arc=30 days, H=22.0 ~135m) from Spacewatch 1.8m (March 16.15p2)
K09B71L 2009 BL71 (arc=44 days, H=22.0 ~135m) from ARO (March 15.05-07p3 at V=21.9-22.1)
Observations of other objects
K09E02Q 2009 EQ2 (arc=9 days, H=20.6 ~257m) from Great Shefford Obs. (March 16.12-13p3)
K09E02P 2009 EP2 (arc=10 days, H=21.5 ~170m) from ARO (March 15.26p5)
K09E00Z 2009 EZ (arc=13 days, H=20.5 ~269m) from ARO (March 15.28p3)
K09D46K 2009 DK46 (arc=15 days, H=18.2 ~776m) from ARO (March 15.21-22p3)
K09D36R 2009 DR36 (arc=19 days, H=20.6 ~257m) from ARO (March 15.34p5)
K09D09G 2009 DG9 (Q=4.674 AU, arc=22 days, H=21.0 ~214m) from ARO (March 15.25-27p3)
K09D04Q 2009 DQ4 (arc=23 days, H=21.2 ~195m) from ARO (March 15.27-28p5)
K09D01L 2009 DL1 (arc=24 days, H=18.9 ~562m) from ARO (March 15.29-30p3)
K09D00Z 2009 DZ (arc=25 days, H=21.4 ~178m) from ARO (March 15.23p3)
K09C05S 2009 CS5 (arc=30 days, H=19.4 ~446m) from Spacewatch 1.8m (March 16.18p2)
K09C05N 2009 CN5 (arc=29 days, H=20.0 ~339m) from Spacewatch 1.8m (March 15.24-25p3)
K09C02A 2009 CA2 (arc=40 days, H=18.8 ~589m) from ARO (March 15.36-38p3)
K09C01W 2009 CW1 (arc=40 days, H=21.7 ~155m) from ARO (March 15.21-22p3)
K09C01Q 2009 CQ1 (arc=55 days, H=20.6 ~257m) from Young/Table Mtn. (March 16.19-21p4)
K09C00Z 2009 CZ (arc=41 days, H=17.9 ~891m) from Young/Table Mtn. (March 16.17-19p4)
K09C00S 2009 CS (arc=41 days, H=19.8 ~371m) from Spacewatch 1.8m (March 15.27-28p3)
K09B58C 2009 BC58 (arc=2 opp, H=18.8 ~589m) from NEAT's Mt. Palomar telescope (2002 Feb. 13.31p1, 2002 Feb. 13.37p1 & 2002 Feb. 13.44p1)
K09B11B 2009 BB11 (arc=49 days, H=19.4 ~446m) from ARO (March 15.23-24p3)
K09B02D 2009 BD2 (arc=55 days, H=17.6 ~1.02 km) from ARO (March 15.20-21p3)
K09A16H 2009 AH16 (arc=59 days, H=17.6 ~1.02 km) from ARO (March 15.24p3)
K09A15M 2009 AM15 (arc=67 days, H=18.7 ~616m) from ARO (March 15.06-07p3)
K09A00M 2009 AM (Q=4.759 AU, arc=74 days, H=21.4 ~178m) from Spacewatch 1.8m (March 15.23p3 & 16.19-20p3 at V=21.3-22.3)
K08Y27S 2008 YS27 (arc=76 days, H=21.2 ~195m) from ARO (March 15.31-32p3 & 15.38-39p3) and Spacewatch 1.8m (March 15.40-41p3)
K08Y27R 2008 YR27 (arc=98 days, H=18.1 ~812m) from ARO (March 15.05p3)
K08E05Y 2008 EY5 (q=0.234 AU, arc=2 opp, H=20.1 ~323m) from SSS (March 15.46-49p4)
K07E88M 2007 EM88 (arc=2 opp, H=19.4 ~446m) from Spacewatch 0.9m (March 15.11-15p3)
K02E02Z 2002 EZ2 (arc=3 opp, H=20.1 ~323m) from CSS (March 15.35-37p3)
J98Y04M 1998 YM4 (arc=3 opp, H=19.7 ~389m) from Spacewatch 1.8m (March 15.31-32p3)
J4386 194386 2001 VG5 from SSS (March 15.43-45p4)
F5336 155336 2006 GA1 from CSS (March 15.42-43p4)
85275 85275 1994 LY from MLS (March 15.37-40p4)
68350 68350 2001 MK3 from El Guijo Obs. (March 15.95-98p3)
18109 18109 2000 NG11 from MLS (March 15.24-27p4)
16834 16834 1997 WU22 from Los Campitos Obs. (March 14.07-08p4)
05604 5604 1992 FE from SSS (March 15.77-80p4)

MPEC 2009-F01 - "02:42 UT" - 2009 DD45

K09D45D 2009 DD45 (small asteroid, Earth MOID=0.0 LD, H=25.8 ~23m) from Kambah Obs. (March 2.41-43p19) and Marsfield Obs. (March 2.52-53p13)

Observers on 16 March '09

Nineteen observing facilities appear in today's MPECs.

Code	Observer / observatory
`H55`	Astronomical Research Obs. (ARO) in Illinois, 25 in MPECs 2009-F02 & 2009-F03 -- 2009 EZ, 2009 EP2, 2009 EM1, 2009 EK1, 2009 EG1, 2009 EF3, 2009 DZ, 2009 DV42, 2009 DR36, 2009 DQ4, 2009 DL1, 2009 DK46, 2009 DG9, 2009 DF1, 2009 CW1, 2009 CT1, 2009 CB3, 2009 CA2, 2009 BL71, 2009 BD2, 2009 BB11, 2009 AM15, 2009 AH16, 2008 YS27, 2008 YR27
`703`	Catalina Sky Survey (CSS) in Arizona, 4 in MPECs 2009-F02 & 2009-F06 -- 2009 FA, 2009 EG1, 2002 EZ2, 155336
`J27`	El Guijo Obs. in Spain, 1 in MPEC 2009-F02 -- 68350
`151`	Eschenberg Obs. in Switzerland, 1 in MPEC 2009-F06 -- 2009 FA
`J95`	Great Shefford Obs. in England, 6 in MPECs 2009-F02, 2009-F03 & 2009-F05 -- 2009 ER, 2009 EQ2, 2009 EH3, 2009 EF3, 2009 EC1, 2009 DO111
`E16`	Grove Creek Obs. in New South Wales, 1 in MPEC 2009-F06 -- 2009 FA
`415`	Kambah Obs. in the Australian Capital Territory, 1 in MPEC 2009-F01 -- 2009 DD45
`I36`	Los Campitos Obs. in Argentina, 1 in MPEC 2009-F02 -- 16834
`E20`	Marsfield Obs., 1 in MPEC 2009-F01 -- 2009 DD45
`118`	Modra Obs. in Slovakia, 1 in MPEC 2009-F06 -- 2009 FA
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 5 in MPECs 2009-F02, 2009-F03, 2009-F04 & 2009-F05 -- 2009 EH3, 2009 EG3, 2009 EF3, 85275, 18109
`644`	NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2009-F02 -- 2009 BC58
`H06%`	Ernesto Guido in Italy via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2009-F06 -- 2009 FA
`854`	Sabino Canyon Obs. in Arizona, 3 in MPECs 2009-F02, 2009-F03 & 2009-F05 -- 2009 EH3, 2009 EG1, 2009 EF3
`H36`	Sandlot Obs. in Kansas, 1 in MPEC 2009-F03 -- 2009 EF3
`E12`	Siding Spring Survey (SSS) in New South Wales, 4 in MPEC 2009-F02 -- 2009 DD45, 2008 EY5, 194386, 5604
`691`	Spacewatch 0.9m telescope in Arizona, 2 in MPECs 2009-F02 & 2009-F03 -- 2009 EF3, 2007 EM88
`291`	Spacewatch 1.8m telescope in Arizona, 15 in MPECs 2009-F02, 2009-F03 & 2009-F04 -- 2009 EK1, 2009 EG3, 2009 EF3, 2009 EE1, 2009 DL46, 2009 DB1, 2009 DA45, 2009 CS5, 2009 CS, 2009 CR5, 2009 CN5, 2009 CB3, 2009 AM, 2008 YS27, 1998 YM4
`6735`	Jim Young via Table Mtn. Obs. in southern California, 5 in MPECs 2009-F02, 2009-F03, 2009-F04 & 2009-F05 -- 2009 EH3, 2009 EG3, 2009 EF3, 2009 CZ, 2009 CQ1

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

Impact Risk Monitoring on 16 March '09

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS at 2229 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 EK1	NEODyS	1432	R E M O V E D						-
2009 EK1	JPL Sentry	1432	R E M O V E D						JPL: Risk listing removed at 0939 UTC.

2009 DO111	JPL Sentry	1432	2068-2108	25	1.1e-04	-3.19	-3.50	0	JPL: "Analysis based on 24 observations spanning 21.558 days (2009-Feb-22.33494 to 2009-Mar-15.89344)." Diameter approximately 0.096 km. from mean, weighted H=22.7.
2009 DO111	NEODyS	1432	2055-2087	12	8.2e-07	-5.17	-5.51	0	NEODyS: "Based on 24 optical observations (of which 0 are rejected as outliers) from 2009/02/22.336 to 2009/03/15.894."

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 16 March '09

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

2034	Grabbed MPEC 2009-F06 - 2009 FA - see above
1732	Grabbed MPEC 2009-F03 - 2009 EF3 - see above Grabbed MPEC 2009-F04 - 2009 EG3 - see above Grabbed MPEC 2009-F05 - 2009 EH3 - see above
1432	Noted that JPL Sentry has updated its 2009 DO111 risk assessment - see above Noted that NEODyS has posted 2009 DO111 as an impact risk - see above Noted that JPL Sentry has removed 2009 EK1 as an impact risk - see above Noted that NEODyS has removed 2009 EK1 as an impact risk - see above Grabbed MPEC 2009-F02 - Daily Orbit Update - see above
0436	Grabbed MPEC 2009-F01 - 2009 DD45 - see above

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