2009-06-02 Tracking News

Contents on 2 June '09

IAU Minor Planet Center
- NEOCP Activity -- two listings: 2 updated
- New MPECs -- two MPECs
Observers -- seventeen 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 2 June '09

The MPC's NEO Confirmation Page has 2 listings: 2 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two updated listings. Of these, one was a "one nighter." So far The Tracking News has counted a total of five 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 at Suno Observatory by Birtwhistle et al.

New MPECs on 2 June '09

Minor Planet Electronic Circulars

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

MPEC 2009-L05 time-stamped "01:41 UT" - 2009 KJ22 - see below
MPEC 2009-L06 time-stamped "06:10 UT" - Daily Orbit Update

<< DOU on 2 June '09 >> MPEC 2009-L06 - "06:10 UT" - Daily Orbit Update

Observations of risk-listed objects
K09K00M 2009 KM (Q=4.353 AU, arc=15 days, H=20.2 ~309m) from Astronomical Research Obs. (ARO) (June 1.11-12p3)
K09K00K 2009 KK (arc=15 days, H=20.5 ~269m) from ARO (June 1.13-15p3)
Observations of recently (no longer) risk-listed objects
K09K05D 2009 KD5 (arc=7 days, H=18.2 ~776m) from ARO (June 1.30-31p3) and La Sagra Obs. (June 2.10-14p4)
K09K02L 2009 KL2 (arc=13 days, H=18.0 ~851m) from Petit Jean Mtn. South Obs. (PJMSO) (June 1.33-34p7) and Naef Obs. (June 1.97-01p2)
Observations of small asteroids (H>22.0)
K09L00A 2009 LA (arc=1 day, H=26.3 ~19m) from Great Shefford Obs. (June 1.93-94p3)
K09K01Y 2009 KY1 (arc=13 days, H=23.7 ~62m) from ARO (June 1.23-24p3)
Observations of other objects
K09K22J 2009 KJ22 (arc=2 days, H=20.0 ~339m) from La Sagra Obs. (June 2.08p2)
K09K07C 2009 KC7 (Q=4.151 AU, arc=5 days, H=19.3 ~467m) from ARO (June 1.28p3) and Desert Moon Obs. (June 1.32-33p3)
K09K05E 2009 KE5 (arc=6 days, H=19.5 ~426m) from ARO (June 1.20-22p4)
K09K02V 2009 KV2 (arc=12 days, H=19.8 ~371m) from Desert Moon Obs. (June 1.22-24p3)
K09K00J 2009 KJ (q=0.351 AU, arc=16 days, H=17.1 ~1.29 km) from Desert Moon Obs. (June 1.13-15p3)
K09J02M 2009 JM2 (arc=20 days, H=19.3 ~467m) from the Mt. Lemmon Survey (MLS) (June 1.25-27p3), Hamamatsu-Yuto Obs. (June 1.54-60p12), and Moriyama Obs. (June 1.61p2)
K09J01L 2009 JL1 (arc=45 days, H=21.1 ~204m) from Desert Moon Obs. (June 1.17-20p3) and ARO (June 1.18-19p3)
K09J01G 2009 JG1 (arc=28 days, H=20.8 ~234m) from Desert Moon Obs. (June 1.26-29p3)
K09J00R 2009 JR (arc=30 days, H=21.3 ~186m) from Jim Young via Table Mtn. Obs. (June 2.21-23p4)
K09H82B 2009 HB82 (Q=4.419 AU, arc=39 days, H=17.7 ~977m) from Desert Moon Obs. (June 1.44-46p3)
K09H44V 2009 HV44 (i=38.0°, arc=40 days, H=18.9 ~562m) from PJMSO (June 1.35p6)
K06S19U 2006 SU19 (arc=4 opp, H=19.0 ~537m) from the Catalina Sky Survey (CSS) (June 1.44-45p4)
K05M13O 2005 MO13 (arc=2 opp, H=20.8 ~234m) from PJMSO (June 1.37p6)
K02L00V 2002 LV (arc=3 opp, H=16.5 ~1.70 km) from PJMSO (June 1.36p5) and Naef Obs. (June 1.91-93p2 & 1.98p1)
K00O22B 2000 OB22 (Q=4.252 AU, arc=4 opp, H=17.1 ~1.29 km) from PJMSO (June 1.37-38p5) and Naef Obs. (June 1.91-96p3)
K00K44N 2000 KN44 (Q=4.247 AU, arc=2 opp, H=18.6 ~645m) from PJMSO (June 1.30p6)
J98S15C 1998 SC15 (arc=6 opp, H=19.4 ~446m) from PJMSO (June 1.30-32p6)
L2546 212546 2006 SV19 from Atlante Obs. (June 1.88-90p3)
J4386 194386 2001 VG5 from Vicksburg Obs. (June 1.33-34p3), Atlante Obs. (June 1.00p3), and El Condor Obs. (June 2.02p2)
I4990 184990 2006 KE89 from LINEAR (June 1.24-29p5)
G2181 162181 1999 LF6 from Atlante Obs. (June 1.97-98p3)
E3651 143651 2003 QO104 from El Condor Obs. (June 2.01p2)
D6617 136617 1994 CC from El Condor Obs. (June 2.01p1 & 2.08p2)
15745 15745 1991 PM5 from Naef Obs. (June 1.94-97p3)
03103 3103 Eger (1982 BB) from Cyclops Obs. (May 29.93p1 & 29.99p3)

MPEC 2009-L05 - "01:41 UT" - 2009 KJ22

K09K22J 2009 KJ22 (H=20.0 ~339m) was discovered at 0957 UT on 31 May by Alianza S4 Obs., which observed it at May 31.41-43p3 and June 1.39p3. The discovery was confirmed by Great Shefford Obs. (June 2.03-05p3).

Observers on 2 June '09

Seventeen observing facilities appear in today's MPECs.

Code	Observer / observatory
`I08`	Alianza S4 Obs. in Argentina, 1 in MPEC 2009-L05 -- 2009 KJ22
`H55`	Astronomical Research Obs. (ARO) in Illinois, 7 in MPEC 2009-L06 -- 2009 KY1, 2009 KM, 2009 KK, 2009 KE5, 2009 KD5, 2009 KC7, 2009 JL1
`J51`	Atlante Obs. in the Canary Islands, 3 in MPEC 2009-L06 -- 212546, 194386, 162181
`703`	Catalina Sky Survey in Arizona, 1 in MPEC 2009-L06 -- 2006 SU19
`B84`	Cyclops Obs. in The Netherlands, 1 in MPEC 2009-L06 -- 3103
`448`	Desert Moon Obs. in New Mexico, 6 in MPEC 2009-L06 -- 2009 KV2, 2009 KJ, 2009 KC7, 2009 JL1, 2009 JG1, 2009 HB82
`I21`	El Condor Obs. in Argentina, 3 in MPEC 2009-L06 -- 194386, 143651, 136617
`J95`	Great Shefford Obs. in England, 2 in MPECs 2009-L05 & 2009-L06 -- 2009 LA, 2009 KJ22
`379`	Hamamatsu-Yuto Obs. in Japan, 1 in MPEC 2009-L06 -- 2009 JM2
`704`	LINEAR in New Mexico, 1 in MPEC 2009-L06 -- 184990
`J75`	La Sagra Obs. in Spain, 2 in MPEC 2009-L06 -- 2009 KJ22, 2009 KD5
`900`	Moriyama Obs. in Japan, 1 in MPEC 2009-L06 -- 2009 JM2
`G96`	Mt. Lemmon Survey in Arizona, 1 in MPEC 2009-L06 -- 2009 JM2
`A13`	Naef Obs. in Switzerland, 4 in MPEC 2009-L06 -- 2009 KL2, 2002 LV, 2000 OB22, 15745
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 7 in MPEC 2009-L06 -- 2009 KL2, 2009 HV44, 2005 MO13, 2002 LV, 2000 OB22, 2000 KN44, 1998 SC15
`6735`	Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2009-L06 -- 2009 JR
`H47`	Vicksburg Obs. in Mississippi, 1 in MPEC 2009-L06 -- 194386

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

Impact Risk Monitoring on 2 June '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 KT21	NEODyS	1327	2016-2090	82	1.73e-08	-4.32	-5.00	0	NEODyS: "Based on 25 optical observations (of which 0 are rejected as outliers) from 2009/05/29.309 to 2009/06/01.352."

2009 KM	JPL Sentry	1327	R E M O V E D						JPL: Risk listing removed at 0852 UTC.

2009 KK	NEODyS	1327	2022	1	8.85e-05	-1.21	-1.21	1	NEODyS: "Based on 89 optical observations (of which 0 are rejected as outliers) from 2009/05/17.261 to 2009/06/01.147. NOTE: The Virtual Impactor in 2022/05/29.761 ... is rated as Torino Scale 1."

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 2 June '09

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

1327	Noted that NEODyS has updated its 2009 KK risk assessment - see above Noted that JPL Sentry has removed 2009 KM as an impact risk - see above Noted that NEODyS has posted 2009 KT21 as an impact risk - see above Grabbed MPEC 2009-L06 - Daily Orbit Update - see above Noted that the NEOCP has become active
0235	Grabbed MPEC 2009-L05 - 2009 KJ22 - see above Noted that the NEOCP has become empty

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