2009-05-27 Tracking News

Contents on 27 May '09

IAU Minor Planet Center
- NEOCP Activity -- five listings: 5 updated
- New MPECs -- seven MPECs
Observers -- eighteen observing facilities
Impact Risk Monitoring -- five 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 27 May '09

The MPC's NEO Confirmation Page has 5 listings: 5 updated

When last checked at 2341 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had five updated listings. Of these, two were "one nighters." So far The Tracking News has counted a total of ten 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 27 May '09

Minor Planet Electronic Circulars

As of last check at 2351 UTC, there have been seven MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2009-K53 time-stamped "00:37 UT" - 2009 KT4 - see below
MPEC 2009-K54 time-stamped "06:08 UT" - Daily Orbit Update - see below
MPEC 2009-K55 time-stamped "15:19 UT" - 2009 KD5 - see below
MPEC 2009-K56 time-stamped "19:31 UT" - 2004 RK9 - see below
MPEC 2009-K57 time-stamped "22:07 UT" - 2002 PQ152 - see below
MPEC 2009-K58 time-stamped "22:22 UT" - 2003 QO91 - see below
MPEC 2009-K59 time-stamped "23:05 UT" - 2004 EP95

MPEC 2009-K59 - "23:05 UT" - 2004 EP95

K04E95P 2004 EP95 (KBO, q=41.965 AU, Q=45.156 AU, H=7.1 ~129 km) from Kitt Peak Natl. Obs. (KPNO) (2005 March 9.49p1 at R=23.1 & 2005 March 10.43p1)

MPEC 2009-K58 - "22:22 UT" - 2003 QO91

K03Q91O 2003 QO91 (KBO, q=39.325 AU, Q=52.007 AU, H=6.8 ~148 km) from Cerro Tololo Inter-American Obs. (CTIO) (2004 July 16.34p1 & 2004 July 16.39p1) and Lowell Obs. Anderson Mesa Station (2007 Oct. 11.15p1 at R=23.2 & 2007 Oct. 11.23p1)

MPEC 2009-K57 - "22:07 UT" - 2002 PQ152

K02PF2Q 2002 PQ152 (Centaur, q=20.919 AU, Q=30.889 AU, H=8.7 ~61.6 km) from CTIO (2004 July 16.34p1 & 2004 July 16.39p1) and Anderson Mesa Sta. (2007 Oct. 11.27p1 at R=22.1 & 2007 Oct. 11.33p1)

MPEC 2009-K56 - "19:31 UT" - 2004 RK9

K04R09K 2004 RK9 (H=21.4 ~178m) from Shenton Park Obs. (May 25.62-63p3, 27.68-69p2 & 27.76-77p2)

MPEC 2009-K55 - "15:19 UT" - 2009 KD5

K09K05D 2009 KD5 (risk-listed, Earth MOID=2.9 LD, H=17.7 ~977m) was discovered at 0308 UT on 26 May by La Sagra Obs., which observed it at May 26.13-15p3 and 27.14-15p3. The discovery was confirmed by the Catalina Sky Survey (CSS) (May 27.39-41p3) and Catalina Station (May 27.42p5).

<< DOU on 27 May '09 >> MPEC 2009-K54 - "06:08 UT" - Daily Orbit Update

Observations of risk-listed objects
K09K04N 2009 KN4 (arc=3 days, H=18.2 ~776m) from CEAMIG-REA (May 26.22p2) and Shenton Park Obs. (May 26.88p2)
K09K00K 2009 KK (arc=9 days, H=20.5 ~269m) from the Spacewatch 1.8m telescope (May 26.21-22p3)
Observations of small asteroids (H>22.0)
K09K02W 2009 KW2 (arc=4 days, H=26.7 ~15m) from Shenton Park Obs. (May 26.84-87p2) and Great Shefford Obs. (May 26.97-98p3)
K09K01Y 2009 KY1 (arc=8 days, H=23.7 ~62m) from La Sagra Obs. (May 26.09-11p2 & 27.03-05p4) and the Spacewatch 0.9m telescope (May 26.37-40p3)
K09J01M 2009 JM1 (arc=21 days, H=23.2 ~78m) from Spacewatch 1.8m (May 26.34-35p3)
Observations of other objects
K09K02V 2009 KV2 (arc=6 days, H=19.8 ~371m) from the Mt. Lemmon Survey (MLS) (May 26.33-36p4)
K09J05R 2009 JR5 (arc=11 days, H=20.3 ~295m) from Spacewatch 0.9m (May 26.32-35p3) and Spacewatch 1.8m (May 26.36-37p3)
K09J02M 2009 JM2 (arc=14 days, H=19.3 ~467m) from Posadas Obs. (May 26.01-02p3)
K09J00R 2009 JR (arc=22 days, H=21.3 ~186m) from Spacewatch 0.9m (May 25.37-41p3)
K09D01L 2009 DL1 (arc=93 days, H=19.0 ~537m) from El Leoncito Obs. (May 21.20-21p3)
K09D01F 2009 DF1 (arc=96 days, H=20.5 ~269m) from Spacewatch 0.9m (May 26.37-40p3)
K08K00P 2008 KP (i=59.8°, q=0.231 AU, arc=2 opp, H=19.0 ~537m) from Spacewatch 0.9m (May 15.30-34p3)
K07H44F 2007 HF44 (arc=2 opp, H=19.2 ~490m) from Spacewatch 1.8m (May 26.19-20p3 at V=21.8-22.2)
K05M13O 2005 MO13 (arc=2 opp, H=20.7 ~245m) from Spacewatch 1.8m (May 26.43p3)
K04L02C 2004 LC2 (arc=2 opp, H=18.7 ~616m) from Spacewatch 0.9m (May 26.20-24p3)
K04J00R 2004 JR (i=45.4°, arc=2 opp, H=18.7 ~616m) from Spacewatch 1.8m (May 26.17-18p2)
K02M03Q 2002 MQ3 (i=36.3°, arc=4 opp, H=18.2 ~776m) from Jaen Obs. (May 26.94-96p2)
K02F06B 2002 FB6 (arc=4 opp, H=17.5 ~1.07 km) from CSS (May 26.17-19p4)
K00K44N 2000 KN44 (Q=4.247 AU, arc=2 opp, H=18.6 ~645m) from Spacewatch 0.9m (May 16.32-36p3)
L4088 214088 2004 JN13 from Chante-Perdrix Obs. (May 20.02-06p3), El Leoncito Obs. (May 23.20-22p3), and Spacewatch 0.9m (May 26.20-24p3)
K7945 207945 1991 JW from El Leoncito Obs. (May 20.09-11p3 & 23.09-10p3)
K6910 206910 2004 NL8 from MLS (May 26.17-20p4)
E3651 143651 2003 QO104 from Posadas Obs. (May 25.91-92p3)
D8911 138911 2001 AE2 from Spacewatch 0.9m (May 15.26-29p3 & 26.21-25p3) and El Leoncito Obs. (May 21.22-23p3)
D6617 136617 1994 CC from El Leoncito Obs. (May 20.06-07p3 & 22.07-08p3)
99799 99799 2002 LJ3 from Spacewatch 0.9m (May 26.38-41p3)
90367 90367 2003 LC5 from CSS (May 26.25-27p4)
65803 65803 Didymos (1996 GT) from Spacewatch 0.9m (May 24.32-36p3)
54660 54660 2000 UJ1 from Jaen Obs. (May 26.99-02p2)
54401 54401 2000 LM from CSS (May 26.37-40p4)
31345 31345 1998 PG from Spacewatch 0.9m (May 24.32-36p3 & 25.32-35p3)
04954 4954 Eric (1990 SQ) from El Leoncito Obs. (May 21.13-14p3 & 23.13-15p3)
03988 3988 1986 LA from Andrushivka Obs. (May 15.83-87p4)
03103 3103 Eger (1982 BB) from Capannoli Obs. (May 26.89p3)
01863 1863 Antinous (1948 EA) from CSS (May 26.15-16p4)

MPEC 2009-K53 - "00:37 UT" - 2009 KT4

K09K04T 2009 KT4 (risk-listed, H=21.9 ~141m) was discovered at 0400 UT on 26 May by MLS, which observed it at May 26.17-19p4 at V=20.3-21.2 and 26.24-27p7 at V=20.1-22.1. The discovery was confirmed by Catalina Sta. (May 26.25p3) and Great Shefford Obs. (May 26.95-96p3).

Observers on 27 May '09

Eighteen observing facilities appear in today's MPECs.

Code	Observer / observatory
`A50`	Andrushivka Obs. in the Ukraine, 1 in MPEC 2009-K54 -- 3988
`I77`	CEAMIG-REA in Brazil, 1 in MPEC 2009-K54 -- 2009 KN4
`B09`	Capannoli Obs. in Italy, 1 in MPEC 2009-K54 -- 3103
`703`	Catalina Sky Survey (CSS) in Arizona, 5 in MPECs 2009-K54 & 2009-K55 -- 2009 KD5, 2002 FB6, 90367, 54401, 1863
`693`	Catalina Station in Arizona, 2 in MPECs 2009-K53 & 2009-K55 -- 2009 KT4, 2009 KD5
`807`	Cerro Tololo Inter-American Obs. (CTIO) in Chile, 2 in MPECs 2009-K57 & 2009-K58 -- 2003 QO91, 2002 PQ152
`A77`	Chante-Perdrix Obs. in France, 1 in MPEC 2009-K54 -- 214088
`808`	El Leoncito Obs. in Argentina, 6 in MPEC 2009-K54 -- 2009 DL1, 214088, 207945, 138911, 136617, 4954
`J95`	Great Shefford Obs. in England, 2 in MPECs 2009-K53 & 2009-K54 -- 2009 KW2, 2009 KT4
`J28`	Jaen Obs. in Spain, 2 in MPEC 2009-K54 -- 2002 MQ3, 54660
`695`	Kitt Peak Natl. Obs. in Arizona, 1 in MPEC 2009-K59 -- 2004 EP95
`J75`	La Sagra Obs. in Spain, 2 in MPECs 2009-K54 & 2009-K55 -- 2009 KY1, 2009 KD5
`688`	Lowell Obs. Anderson Mesa Station in Arizona, 2 in MPECs 2009-K57 & 2009-K58 -- 2003 QO91, 2002 PQ152
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 3 in MPECs 2009-K53 & 2009-K54 -- 2009 KV2, 2009 KT4, 206910
`J53`	Posadas Obs. in Spain, 2 in MPEC 2009-K54 -- 2009 JM2, 143651
`D21`	Shenton Park Obs. in Western Australia, 3 in MPECs 2009-K54 & 2009-K56 -- 2009 KW2, 2009 KN4, 2004 RK9
`691`	Spacewatch 0.9m telescope in Arizona, 12 in MPEC 2009-K54 -- 2009 KY1, 2009 JR5, 2009 JR, 2009 DF1, 2008 KP, 2004 LC2, 2000 KN44, 99799, 65803, 31345, 214088, 138911
`291`	Spacewatch 1.8m telescope in Arizona, 6 in MPEC 2009-K54 -- 2009 KK, 2009 JR5, 2009 JM1, 2007 HF44, 2005 MO13, 2004 JR

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

Impact Risk Monitoring on 27 May '09

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2350 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 KD5	JPL Sentry	1804	2015-2104	85	6.6e-08	-3.30	-3.86	0	JPL: "Analysis based on 14 observations spanning 1.2922 days (2009-May-26.13113 to 2009-May-27.42334)." Diameter approximately 0.991 km. from mean, weighted H=17.7.

2009 KT4	NEODyS	1352	2018-2077	22	5.88e-08	-5.61	-6.07	0	NEODyS: "Based on 17 optical observations (of which 0 are rejected as outliers) from 2009/05/26.168 to 2009/05/26.965."
2009 KT4	JPL Sentry	0325	2018-2108	63	1.9e-07	-5.12	-5.63	0	JPL: "Analysis based on 17 observations spanning .79689 days (2009-May-26.16694 to 2009-May-26.96383)." Diameter approximately 0.130 km. from mean, weighted H=22.0.

2009 KQ4	NEODyS	1352	2014-2070	12	3.76e-09	-5.98	-6.60	0	NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2009/05/26.168 to 2009/05/26.943."
2009 KQ4	JPL Sentry	0325	2014-2106	44	2.1e-08	-5.26	-5.80	0	JPL: "Analysis based on 19 observations spanning .77432 days (2009-May-26.16763 to 2009-May-26.94195)." Diameter approximately 0.278 km. from mean, weighted H=20.4.

2009 KN4	JPL Sentry	1352	2013-2108	66	5.8e-07	-3.05	-3.84	0	JPL: "Analysis based on 16 observations spanning 3.0961 days (2009-May-23.78358 to 2009-May-26.87971)." Diameter approximately 0.796 km. from mean, weighted H=18.1.
2009 KN4	NEODyS	1352	2013-2089	25	3.54e-07	-3.14	-3.62	0	NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2009/05/23.784 to 2009/05/26.880."

2009 KK	JPL Sentry	1516	2022	1	3.6e-05	-1.60	-1.60	1	JPL: "Analysis based on 73 observations spanning 8.9603 days (2009-May-17.25987 to 2009-May-26.22015)." Diameter approximately 0.270 km. from mean, weighted H=20.5.
2009 KK	NEODyS	1352	2022-2038	2	3.62e-05	-1.60	-1.60	1	NEODyS: "Based on 73 optical observations (of which 0 are rejected as outliers) from 2009/05/17.261 to 2009/05/26.221. NOTE: The Virtual Impactor in 2022/05/29.763 ... 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 27 May '09

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

2322	Grabbed MPEC 2009-K59 - 2004 EP95 - see above
2253	Grabbed MPEC 2009-K57 - 2002 PQ152 - see above Grabbed MPEC 2009-K58 - 2003 QO91 - see above
2000	Grabbed MPEC 2009-K56 - 2004 RK9 - see above
1804	Noted that JPL Sentry has posted 2009 KD5 as an impact risk - see above
1601	Grabbed MPEC 2009-K55 - 2009 KD5 - see above
1516	Noted that JPL Sentry has updated its 2009 KK risk assessment - see above
1352	Noted that NEODyS has updated its 2009 KK risk assessment - see above Noted that JPL Sentry has updated its 2009 KN4 risk assessment - see above Noted that NEODyS has posted 2009 KN4 as an impact risk - see above Noted that NEODyS has posted 2009 KQ4 as an impact risk - see above Noted that NEODyS has posted 2009 KT4 as an impact risk - see above Grabbed MPEC 2009-K54 - Daily Orbit Update - see above
0325	Noted that JPL Sentry has posted 2009 KQ4 as an impact risk - see above Noted that JPL Sentry has posted 2009 KT4 as an impact risk - see above Grabbed MPEC 2009-K53 - 2009 KT4 - see above

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