2008-05-13 Tracking News

Contents on 13 May '08

IAU Minor Planet Center
- NEOCP Activity -- five listings: 1 new, 4 updated
- New MPECs -- three MPECs
Observers -- 33 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 13 May '08

The MPC's NEO Confirmation Page has 5 listings: 1 new, 4 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and four updated listings. Of these, three were "one nighters." So far The Tracking News has counted a total of nine objects listed 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 13 May '08

Minor Planet Electronic Circulars

As of last check at 2354 UTC, there have been three MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2008-J67 time-stamped "06:07 UT" - Daily Orbit Update - see below
MPEC 2008-J68 time-stamped "15:23 UT" - Comet P/2008 J2 (Beshore) - see below
MPEC 2008-J69 time-stamped "17:22 UT" - Comet C/2008 J4 (McNaught)

MPEC 2008-J69 - "17:22 UT" - Comet C/2008 J4 (McNaught)

CK08J040 C/2008 J4 (i=88.4°, q=0.445 AU, TP=2008 June 19.441 TT) from the Siding Spring Survey (SSS) (May 10.79-81p4, 11.76p1, 11.81p1 & 12.76p1) and Tiki Obs. (May 12.60-63p3 & 13.60-63p2)

MPEC 2008-J68 - "15:23 UT" - Comet P/2008 J2 (Beshore)

CK08J020 C/2008 J2 (Beshore) (q=2.455 AU, Q=4.363 AU, TP=2008 Apr. 24.018 TT) from La Silla (May 8.36p1), Kanab Obs. (May 9.39-43p2, 11.36p1 & 11.42p1), Stammersdorf Obs. (May 9.95-97p3), KLENOT (May 10.02p5), Modra Obs. (May 10.08-09p3), Altamira Obs. (May 10.08-09p3 & 12.04-07p3), AAAA Buenos Aires Obs. (May 10.22-27p3), RAS Obs. Mayhill (May 10.29-33p2, 11.26-30p2 & 13.30-34p2), Sabino Canyon Obs. (May 10.36p3), North Ryde Obs. (May 10.55-56p2 & 12.47-48p2), Nazaret Obs. (May 11.15-17p3), Ageo Obs. (May 11.67-71p4), Atlante Obs. (May 11.97-98p3), Monte Deva Obs. (May 11.98-99p5), Yatsuka Obs. (May 12.58-59p3), and Malaga Obs. (May 13.14-15p4)

<< DOU on 13 May '08 >> MPEC 2008-J67 - "06:07 UT" - Daily Orbit Update

Observations of risk-listed objects
K08J24L 2008 JL24 (small asteroid, arc=2 days, H=29.5 ~4m) from Mt. John Obs. (May 12.67p4) and the Spacewatch 1.8m telescope (May 13.20-21p4)
K08J00Q 2008 JQ (small asteroid, arc=8 days, H=25.6 ~26m) from Astronomical Research Obs. (ARO) (May 10.24-26p4)
K07H03X 2007 HX3 (arc=2 opp, H=20.0 ~339m) from Andrea Boattini via Cerro Paranal (2003 May 22.98p4 at R=23.8-24.2)
Observations of recently (no longer) risk-listed objects
K08J00P 2008 JP (arc=8 days, H=20.8 ~234m) from ARO (May 10.09-11p4)
K08H00H 2008 HH (almost small, arc=18 days, H=21.9 ~141m) from ARO (May 12.27-29p4)
Observations of small asteroids (H>22.0)
K08J24P 2008 JP24 (arc=2 days, H=26.6 ~16m) from Mt. John Obs. (May 12.69p4)
K08J14R 2008 JR14 (arc=6 days, H=25.1 ~32m) from ARO (May 10.22p3 & 12.23p3)
K08J02U 2008 JU2 (arc=10 days, H=22.7 ~98m) from Drebach Obs. (May 12.90p5)
K08G03R 2008 GR3 (arc=35 days, H=25.2 ~31m) from ARO (May 12.26-27p4)
K08C22D 2008 CD22 (arc=91 days, H=22.1 ~129m) from ARO (May 10.15-17p3)
K07X23A 2007 XA23 (arc=148 days, H=23.0 ~85m) from ARO (May 10.18-20p3 at V=22.2-5)
K06U00P 2006 UP (arc=2 opp, H=22.9 ~89m) from Spacewatch 1.8m (2002 Nov. 14.33-38p3)
K04R11C 2004 RC11 (arc=28 days, H=23.6 ~65m) from Spacewatch 1.8m (2004 Oct. 5.25-26p3)
Observations of other objects
K08J20N 2008 JN20 (arc=3 days, H=18.5 ~676m) from ARO (May 12.31-32p4) and Drebach Obs. (May 12.87p5)
K08J20M 2008 JM20 (arc=2 days, H=21.0 ~214m) from ARO (May 12.25-26p3) and Drebach Obs. (May 12.93-94p5)
K08J19W 2008 JW19 (arc=4 days, H=20.8 ~234m) from ARO (May 12.24p3)
K08J19T 2008 JT19 (arc=6 days, H=20.0 ~339m) from ARO (May 10.22-24p3) and Spacewatch 1.8m (May 13.22p3)
K08J19S 2008 JS19 (arc=4 days, H=18.9 ~562m) from ARO (May 12.16-17p3)
K08J14P 2008 JP14 (arc=12 days, H=19.3 ~467m) from Drebach Obs. (May 12.91-92p5)
K08J14O 2008 JO14 (arc=5 days, H=21.2 ~195m) from the Catalina Sky Survey (CSS) (May 12.21-23p4)
K08J07Z 2008 JZ7 (Q=4.439 AU, arc=7 days, H=18.5 ~676m) from ARO (May 12.13-14p4)
K08J00J 2008 JJ (i=44.5°, arc=12 days, H=19.0 ~537m) from Drebach Obs. (May 12.88-89p5)
K08H38A 2008 HA38 (arc=2 opp, H=20.5 ~269m) from LONEOS (2003 Oct. 29.22-28p4)
K08H02F 2008 HF2 (arc=16 days, H=19.6 ~407m) from Drebach Obs. (May 12.94-95p5)
K08G00F 2008 GF (arc=39 days, H=20.7 ~245m) from ARO (May 10.12-14p3)
K08F05W 2008 FW5 (arc=43 days, H=21.7 ~155m) from ARO (May 10.26-28p3 at V=22.0-22.1)
K08F00N 2008 FN (i=44.7°, arc=2 opp, H=18.5 ~676m) from Drebach Obs. (May 12.96-97p5)
K08E69D 2008 ED69 (i=36.3°, Q=5.048 AU, arc=62 days, H=16.9 ~1.41 km) from Mirasteilas Obs. (May 12.09-10p3) and Petit Jean Mtn. South Obs. (PJMSO) (May 12.34-35p6)
K08E69C 2008 EC69 (Q=4.458 AU, arc=85 days, H=17.2 ~1.23 km) from PJMSO (May 12.35-36p6) and Drebach Obs. (May 13.01-02p5)
K08E05Z 2008 EZ5 (arc=2 opp, H=19.5 ~426m) from NEAT's Mt. Palomar telescope (2005 Aug. 27.44-47p3)
K08D00Y 2008 DY (Q=4.342 AU, arc=76 days, H=20.9 ~224m) from ARO (May 12.30p3)
K08C01Q 2008 CQ1 (arc=2 opp, H=19.4 ~446m) from NEAT/Palomar (2005 May 19.42-45p3)
K08B18T 2008 BT18 (arc=3 opp, H=18.3 ~741m) from Mirasteilas Obs. (May 12.87-90p3)
K07V04Q 2007 VQ4 (arc=3 opp, H=16.0 ~2.14 km, q=1.271 AU) from Drebach Obs. (May 12.85p5)
K07T68W 2007 TW68 (arc=2 opp, H=19.3 ~467m) from the Spacewatch 0.9m telescope (2003 April 25.32-38p3)
K07R12R 2007 RR12 (arc=2 opp, H=19.8 ~371m) from Marc W. Buie via Cerro Tololo Inter-American Obs. (CTIO) (2004 July 16.34p1 & 2004 July 16.39p1)
K06SD4J 2006 SJ134 (arc=3 opp, H=18.0 ~851m) from ARO (May 10.33-36p3 at V=23.3-5)
K05T45U 2005 TU45 (arc=3 opp, H=17.0 ~1.35 km) from PJMSO (May 12.37-38p5)
K05N07B 2005 NB7 (arc=3 opp, H=18.7 ~616m) from Mirasteilas Obs. (May 11.91-93p3) and Drebach Obs. (May 12.86p5)
K04J02N 2004 JN2 (arc=2 opp, H=20.4 ~282m) from Spacewatch 1.8m (2003 May 11.38-39p3)
K03K02O 2003 KO2 (q=0.356 AU, arc=4 opp, H=20.2 ~309m) from PJMSO (May 12.36-37p5)
K03A01D 2003 AD1 (arc=3 opp, H=18.2 ~776m) from the Mt. Lemmon Survey (MLS) (May 12.40-42p4)
K03A00A 2003 AA (arc=3 opp, H=19.5 ~426m) from ARO (May 10.29-32p3 at V=22.7-23.0)
K01Q34C 2001 QC34 (arc=2 opp, H=20.1 ~323m) from SSS (May 12.43-46p4)
G2723 162723 2000 VM2 from SSS (May 11.78-79p3)
F3591 153591 2001 SN263 from SSS (May 12.54-57p4)
F2964 152964 2000 GP82 from MLS (May 12.14-16p4)
E3637 143637 2003 LP6 from MLS (May 12.23-25p4)
D7170 137170 1999 HF1 from Atlante Obs. (May 13.03-04p3)
96631 96631 1999 FP59 from SSS (May 12.59-63p4)
85818 85818 1998 XM4 from Mirasteilas Obs. (May 12.04-06p3)
85770 85770 1998 UP1 from LONEOS (2004 Oct. 9.45-48p4)
85709 85709 1998 SG36 from the Sloan Digital Sky Survey (SDSS) (2002 Oct. 11.25-26p2)
68359 68359 2001 OZ13 from CSS (May 2.23-25p4)
67399 67399 2000 PJ6 from SDSS (2000 Oct. 2.27-28p2)
39572 39572 1993 DQ1 from SSS (May 12.51-53p4)
35107 35107 1991 VH from PJMSO (May 12.33-34p5), CSS (May 12.38-40p4), and Drebach Obs. (May 13.02-03p5)
16816 16816 1997 UF9 from SDSS (2002 Oct. 11.40p2)
11398 11398 1998 YP11 from Atlante Obs. (May 13.05-06p3)
11066 11066 Sigurd (1992 CC1) from CSS (May 12.14-16p4)
10115 10115 1992 SK from SDSS (2003 Jan. 28.15p2)
06611 6611 1993 VW from SSS (2005 May 4.51-54p4) and LONEOS (2005 May 8.18-24p4, 2005 May 12.21p1 & 2005 May 12.25-28p2)
06455 6455 1992 HE from SDSS (2000 Nov. 27.38p2)
05836 5836 1993 MF from LINEAR (May 12.20-24p5)
05131 5131 1990 BG from CSS (May 12.14-16p4)
04503 4503 Cleobulus (1989 WM) from CSS (May 2.32-34p4)
02368 2368 Beltrovata (1977 RA) from Spacewatch 0.9m (2005 Oct. 10.43-44p2)
02340 2340 Hathor (1976 UA) from LONEOS (2007 Nov. 1.08-13p4)
01685 1685 Toro (1948 OA) from CSS (May 2.16-17p4)

Observers on 13 May '08

A total of 33 observing facilities appear in today's MPECs.

Code	Observer / observatory
`834`	AAAA Buenos Aires Obs. in Argentina, 1 in MPEC 2008-J68 -- P/2008 J2
`349`	Ageo Obs. in Japan, 1 in MPEC 2008-J68 -- P/2008 J2
`J24`	Altamira Obs., 1 in MPEC 2008-J68 -- P/2008 J2
`H55`	Astronomical Research Obs. (ARO) in Illinois, 18 in MPEC 2008-J67 -- 2008 JZ7, 2008 JW19, 2008 JT19, 2008 JS19, 2008 JR14, 2008 JQ, 2008 JP, 2008 JN20, 2008 JM20, 2008 HH, 2008 GR3, 2008 GF, 2008 FW5, 2008 DY, 2008 CD22, 2007 XA23, 2006 SJ134, 2003 AA
`J51`	Atlante Obs. in the Canary Islands, 3 in MPECs 2008-J67 & 2008-J68 -- P/2008 J2, 137170, 11398
`703`	Catalina Sky Survey (CSS) in Arizona, 7 in MPEC 2008-J67 -- 2008 JO14, 68359, 35107, 11066, 5131, 4503, 1685
`3091`	Andrea Boattini via Cerro Paranal in Chile, 1 in MPEC 2008-J67 -- 2007 HX3
`8071`	Marc W. Buie via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2008-J67 -- 2007 RR12
`113`	Drebach Obs. in Germany, 11 in MPEC 2008-J67 -- 2008 JU2, 2008 JP14, 2008 JN20, 2008 JM20, 2008 JJ, 2008 HF2, 2008 FN, 2008 EC69, 2007 VQ4, 2005 NB7, 35107
`246`	KLENOT in the Czech Republic, 1 in MPEC 2008-J68 -- P/2008 J2
`682`	Kanab Obs. in Utah, 1 in MPEC 2008-J68 -- P/2008 J2
`704`	LINEAR in New Mexico, 1 in MPEC 2008-J67 -- 5836
`699`	LONEOS in Arizona, 4 in MPEC 2008-J67 -- 2008 HA38, 85770, 6611, 2340
`809`	La Silla in Chile, 1 in MPEC 2008-J68 -- P/2008 J2
`J40`	Malaga Obs. in Spain, 1 in MPEC 2008-J68 -- P/2008 J2
`B67`	Mirasteilas Obs. in Switzerland, 4 in MPEC 2008-J67 -- 2008 ED69, 2008 BT18, 2005 NB7, 85818
`118`	Modra Obs. in Slovakia, 1 in MPEC 2008-J68 -- P/2008 J2
`945`	Monte Deva Obs. in Spain, 1 in MPEC 2008-J68 -- P/2008 J2
`474`	Mt. John Obs. in New Zealand, 2 in MPEC 2008-J67 -- 2008 JP24, 2008 JL24
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 3 in MPEC 2008-J67 -- 2003 AD1, 152964, 143637
`644`	NEAT's Mt. Palomar telescope in southern California, 2 in MPEC 2008-J67 -- 2008 EZ5, 2008 CQ1
`J47`	Nazaret Obs. in Spain, 1 in MPEC 2008-J68 -- P/2008 J2
`423`	North Ryde Obs. in New South Wales, 1 in MPEC 2008-J68 -- P/2008 J2
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 5 in MPEC 2008-J67 -- 2008 ED69, 2008 EC69, 2005 TU45, 2003 KO2, 35107
`H06`	RAS Obs. Mayhill in New Mexico, 1 in MPEC 2008-J68 -- P/2008 J2
`854`	Sabino Canyon Obs. in Arizona, 1 in MPEC 2008-J68 -- P/2008 J2
`E12`	Siding Spring Survey (SSS) in New South Wales, 7 in MPECs 2008-J67 & 2008-J69 -- C/2008 J4, 2001 QC34, 96631, 39572, 162723, 153591, 6611
`645`	Sloan Digital Sky Survey (SDSS) in New Mexico, 5 in MPEC 2008-J67 -- 85709, 67399, 16816, 10115, 6455
`691`	Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2008-J67 -- 2007 TW68, 2368
`291`	Spacewatch 1.8m telescope in Arizona, 5 in MPEC 2008-J67 -- 2008 JT19, 2008 JL24, 2006 UP, 2004 RC11, 2004 JN2
`A97`	Stammersdorf Obs. in Austria, 1 in MPEC 2008-J68 -- P/2008 J2
`F85`	Tiki Obs. in Tahiti, 1 in MPEC 2008-J69 -- C/2008 J4
`367`	Yatsuka Obs., 1 in MPEC 2008-J68 -- P/2008 J2

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

Impact Risk Monitoring on 13 May '08

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2354 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.
Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090.
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

2008 JL24	NEODyS	1605	2068	1	1.69e-08	-10.23	-10.23	0	NEODyS: "Based on 47 optical observations (of which 0 are rejected as outliers) from 2008/05/11.254 to 2008/05/13.212."
2008 JL24	JPL Sentry	1333	2091	1	6.3e-07	-8.80	-8.80	0	JPL: "Analysis based on 47 observations spanning 1.9572 days (2008-May-11.25353 to 2008-May-13.21077)." Diameter approximately 0.004 km. from mean, weighted H=29.5.

2008 JQ	JPL Sentry	1333	2101	1	2.1e-08	-8.30	-8.30	0	JPL: "Analysis based on 42 observations spanning 7.9563 days (2008-May-02.30115 to 2008-May-10.257429)." Diameter approximately 0.027 km. from mean, weighted H=25.5.

2008 HO3	JPL Sentry	0022	R E M O V E D						JPL: Risk listing removed at 0015 UTC.

2008 HE3	JPL Sentry	0110	R E M O V E D						JPL: Risk listing removed at 0024 UTC.

2007 HX3	NEODyS	1459	R E M O V E D						-
2007 HX3	JPL Sentry	1333	R E M O V E D						JPL: Risk listing removed at 1025 UTC.

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 13 May '08

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

1746	Grabbed MPEC 2008-J69 - Comet C/2008 J4 (McNaught) - see above
1604	Noted that NEODyS has posted 2008 JL24 as an impact risk - see above Grabbed MPEC 2008-J68 - Comet P/2008 J2 (Beshore) - see above
1459	Noted that NEODyS has removed 2007 HX3 as an impact risk - see above
1333	Noted that JPL Sentry has removed 2007 HX3 as an impact risk - see above Noted that JPL Sentry has updated its 2008 JL24 risk assessment - see above Noted that JPL Sentry has reposted 2008 JQ as an impact risk - see above Grabbed MPEC 2008-J67 - Daily Orbit Update - see above
0110	Noted that JPL Sentry has removed 2008 HE3 as an impact risk - see above
0022	Noted that JPL Sentry has removed 2008 HO3 as an impact risk - see above

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