2008-05-01 Tracking News

Contents on 1 May '08

IAU Minor Planet Center
- NEOCP Activity -- twelve listings: 2 new, 10 updated
- New MPECs -- six MPECs
Observers -- nineteen 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

NOTE: The Tracking News and this Web site will be updating less often, and at sometimes irregular intervals, until around May 4th.

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 1 May '08

The MPC's NEO Confirmation Page has 12 listings: 2 new, 10 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two new and ten updated listings. Of these, six were "one nighters." So far The Tracking News has counted a total of 22 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 1 May '08

Minor Planet Electronic Circulars

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

MPEC 2008-J01 time-stamped "06:07 UT" - Daily Orbit Update - see below
MPEC 2008-J02 time-stamped "12:27 UT" - 2008 HO3 - see below
MPEC 2008-J03 time-stamped "19:08 UT" - 2008 HT4 - see below
MPEC 2008-J04 time-stamped "19:14 UT" - 2008 HU4 - see below
MPEC 2008-J05 time-stamped "19:17 UT" - 2008 HV4 - see below
MPEC 2008-J06 time-stamped "21:30 UT" - 2008 JC

MPEC 2008-J06 - "21:30 UT" - 2008 JC

K08J00C 2008 JC (small asteroid, Earth MOID=2.5 LD, H=26.4 ~18m) was discovered at 0647 UT on 1 May by the Catalina Sky Survey (CSS), which observed it at May 1.28-34p8 and 1.43p3. The discovery was confirmed by Sabino Canyon Obs. (May 1.33p3) and Great Shefford Obs. (May 1.88p3). This object is now within ten lunar distances (LD) of Earth, reaching 2.7 LD on 30 April.

MPEC 2008-J05 - "19:17 UT" - 2008 HV4

K08H04V 2008 HV4 (H=19.3 ~467m) was discovered at 0806 UT on 30 April by the Mt. Lemmon Survey (MLS), which observed it at April 30.34-35p4, 30.40-41p3, and May 1.32p4. The discovery was confirmed by Cordell-Lorenz Obs. (April 30.38-39p2 & May 1.26-32p3), Astronomical Research Obs. (ARO) (April 30.39-40p3), Consell Obs. (April 30.97-99p5), and Sabino Canyon Obs. (May 1.37p1).

MPEC 2008-J04 - "19:14 UT" - 2008 HU4

K08H04U 2008 HU4 (risk-listed, Earth MOID=2.7 LD, H=28.1 ~8m) was discovered at 0747 UT on 30 April by CSS, which observed it at April 30.32-37p10 and May 1.34p8. The discovery was confirmed by Sabino Canyon Obs. (May 1.40p1). This object is now within ten lunar distances (LD) of Earth, reaching 2.6 LD on 24 April.

MPEC 2008-J03 - "19:08 UT" - 2008 HT4

K08H04T 2008 HT4 (small asteroid, H=23.2 ~78m) was discovered at 0527 UT on 30 April by MLS, which observed it at April 30.23-25p4, 30.33p4, and May 1.22p4.

MPEC 2008-J02 - "12:27 UT" - 2008 HO3

K08H03O 2008 HO3 (risk-listed, H=18.4 ~708m) was discovered at 0807 UT on 29 April by MLS, which observed it at April 29.34-40p8, 30.29-32p4, and May 1.24-28p11. The discovery was confirmed by ARO (April 30.21-22p3).

<< DOU on 1 May '08 >> MPEC 2008-J01 - "06:07 UT" - Daily Orbit Update

Observations of risk-listed objects
K08H03R 2008 HR3 (small asteroid, arc=1 day, H=24.8 ~37m) from ARO (April 30.17-18p3)
K08H03D 2008 HD3 (i=56.1°, arc=2 days, H=19.6 ~407m) from the Spacewatch 0.9m telescope (April 30.26-29p3), the Spacewatch 1.8m telescope (April 30.26p3), and LINEAR (April 30.30-33p4)
K08H00J 2008 HJ (small asteroid, arc=6 days, H=25.8 ~23m) from ARO (April 30.37-38p5)
Observations of recently (no longer) risk-listed objects
K08H00H 2008 HH (almost small, arc=6 days, H=22.0 ~135m) from ARO (April 30.29-30p4)
K08H00G 2008 HG (small asteroid, arc=6 days, H=23.8 ~59m) from Greiner Research Obs. (GRO) (April 30.18-19p7)
K08H00E 2008 HE (q=0.113 AU, Q=4.534 AU, arc=10 days, H=18.0 ~851m) from MLS (April 27.17p4)
K08G01D 2008 GD1 (small asteroid, arc=27 days, H=22.5 ~107m) from Spacewatch 1.8m (April 30.16-17p3)
K08G00F 2008 GF (arc=29 days, H=20.7 ~245m) from Spacewatch 1.8m (April 30.14-16p3)
Observations of small asteroids (H>22.0)
K08H03J 2008 HJ3 (arc=2 days, H=23.1 ~81m) from Alter Satzberg Obs. (April 30.87-91p4)
K08H02E 2008 HE2 (arc=4 days, H=23.6 ~65m) from Alter Satzberg Obs. (April 30.93-94p2)
K08H00K 2008 HK (arc=5 days, H=22.2 ~123m) from ARO (April 30.14-15p3)
K08E07Q 2008 EQ7 (arc=55 days, H=22.6 ~102m) from Desert Moon Obs. (April 30.39-45p3)
Observations of other objects
K08H03S 2008 HS3 (arc=1 day, H=21.3 ~186m) from Alter Satzberg Obs. (April 30.83-85p6) and Balzaretto Obs. (April 30.84-88p4)
K08H01W 2008 HW1 (q=0.102 AU, Q=5.067 AU, arc=32 days, H=17.5 ~1.07 km) from GRO (April 30.20-21p20), Petit Jean Mtn. South Obs. (PJMSO) (April 30.27-29p11), and Masquefa Obs. (May 1.08-09p3)
K08GB0B 2008 GB110 (i=36.1°, arc=16 days, H=19.8 ~371m) from Desert Moon Obs. (April 30.22-25p3)
K08G20P 2008 GP20 (arc=19 days, H=19.5 ~426m) from MLS (April 29.23-24p4)
K08G00D 2008 GD (q=0.267 AU, arc=25 days, H=19.8 ~371m) from MLS (April 26.14-16p4)
K08F06N 2008 FN6 (arc=31 days, H=21.4 ~178m) from LINEAR (April 30.29-33p5)
K08E69D 2008 ED69 (i=36.3°, Q=5.047 AU, arc=50 days, H=16.9 ~1.41 km) from PJMSO (April 30.31-33p6)
K08E69C 2008 EC69 (Q=4.458 AU, arc=72 days, H=17.1 ~1.29 km) from PJMSO (April 30.33-34p5)
K08E00S 2008 ES (Q=4.037 AU, arc=2 opp, H=18.3 ~741m) from Desert Moon Obs. (April 30.17-19p3)
K08D00E 2008 DE (arc=78 days, H=19.6 ~407m) from PJMSO (April 30.30-31p7)
K08C70J 2008 CJ70 (arc=87 days, H=21.3 ~186m) from ARO (April 30.08-11p3 at V=22.4-5)
K08C23P 2008 CP23 (arc=88 days, H=19.6 ~407m) from CSS (April 26.20-22p4)
K08B22C 2008 BC22 (arc=110 days, H=19.8 ~371m) from CSS (April 30.28-29p3)
K08A00E 2008 AE (arc=2 opp, H=19.8 ~371m) from LINEAR (April 30.24-28p4)
K07VI3R 2007 VR183 (Q=4.353 AU, arc=229 days, H=17.5 ~1.07 km) from ARO (April 30.10-11p3) and CSS (April 30.18-19p4)
K05S71E 2005 SE71 (arc=2 opp, H=18.1 ~812m) from ARO (April 30.11p3)
K05N07B 2005 NB7 (arc=3 opp, H=18.7 ~616m) from GRO (April 30.19-20p20)
K05F03E 2005 FE3 (arc=2 opp, H=19.4 ~446m) from ARO (April 30.12-14p3)
K05A14H 2005 AH14 (arc=3 opp, H=17.2 ~1.23 km) from David Tholen's team on Mauna Kea (April 22.24p2 & 23.24-25p2)
K04J06G 2004 JG6 (IEO, q=0.298 AU, Q=0.973 AU, arc=2 opp, H=18.9 ~562m) from ARO (April 30.07-08p3), CSS (April 30.15-17p4), and MLS (April 30.19-21p4)
K01H07Y 2001 HY7 (arc=4 opp, H=20.5 ~269m) from LINEAR (April 30.29-33p5)
E4861 144861 2004 LA12 from Desert Moon Obs. (April 30.29-36p3)
D7170 137170 1999 HF1 from PJMSO (April 30.36p5)
A2873 102873 1999 WK11 from Iluro Obs. (April 29.92-93p3)
85628 85628 1998 KV2 from LINEAR (April 30.34-38p5) and Spacewatch 0.9m (April 30.37-40p3)
68278 68278 2001 FC7 from LINEAR (April 30.30-34p5)
53319 53319 1999 JM8 from PJMSO (April 30.35p5)
24445 24445 2000 PM8 from Andrushivka Obs. (April 24.81-82p2 & 25.81-83p4)
07350 7350 1993 VA from LINEAR (April 30.14-17p4)
04954 4954 Eric (1990 SQ) from LINEAR (April 30.14-18p4)

Observers on 1 May '08

Nineteen observing facilities appear in today's MPECs.

Code	Observer / observatory
`B03`	Alter Satzberg Obs. in Austria, 3 in MPEC 2008-J01 -- 2008 HS3, 2008 HJ3, 2008 HE2
`A50`	Andrushivka Obs. in the Ukraine, 1 in MPEC 2008-J01 -- 24445
`H55`	Astronomical Research Obs. (ARO) in Illinois, 11 in MPECs 2008-J01, 2008-J02 & 2008-J05 -- 2008 HV4, 2008 HR3, 2008 HO3, 2008 HK, 2008 HJ, 2008 HH, 2008 CJ70, 2007 VR183, 2005 SE71, 2005 FE3, 2004 JG6
`A81`	Balzaretto Obs. in Italy, 1 in MPEC 2008-J01 -- 2008 HS3
`703`	Catalina Sky Survey (CSS) in Arizona, 6 in MPECs 2008-J01, 2008-J04 & 2008-J06 -- 2008 JC, 2008 HU4, 2008 CP23, 2008 BC22, 2007 VR183, 2004 JG6
`176`	Consell Obs. in Spain, 1 in MPEC 2008-J05 -- 2008 HV4
`850`	Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2008-J05 -- 2008 HV4
`448`	Desert Moon Obs. in New Mexico, 4 in MPEC 2008-J01 -- 2008 GB110, 2008 ES, 2008 EQ7, 144861
`J95`	Great Shefford Obs. in England, 1 in MPEC 2008-J06 -- 2008 JC
`H51`	Greiner Research Obs. (GRO) in Wisconsin, 3 in MPEC 2008-J01 -- 2008 HW1, 2008 HG, 2005 NB7
`B19`	Iluro Obs. in Spain, 1 in MPEC 2008-J01 -- 102873
`704`	LINEAR in New Mexico, 8 in MPEC 2008-J01 -- 2008 HD3, 2008 FN6, 2008 AE, 2001 HY7, 85628, 68278, 7350, 4954
`232`	Masquefa Obs. in Spain, 1 in MPEC 2008-J01 -- 2008 HW1
`5682`	David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-J01 -- 2005 AH14
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 7 in MPECs 2008-J01, 2008-J02, 2008-J03 & 2008-J05 -- 2008 HV4, 2008 HT4, 2008 HO3, 2008 HE, 2008 GP20, 2008 GD, 2004 JG6
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 6 in MPEC 2008-J01 -- 2008 HW1, 2008 ED69, 2008 EC69, 2008 DE, 53319, 137170
`854`	Sabino Canyon Obs. in Arizona, 3 in MPECs 2008-J04, 2008-J05 & 2008-J06 -- 2008 JC, 2008 HV4, 2008 HU4
`691`	Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2008-J01 -- 2008 HD3, 85628
`291`	Spacewatch 1.8m telescope in Arizona, 3 in MPEC 2008-J01 -- 2008 HD3, 2008 GF, 2008 GD1

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

Impact Risk Monitoring on 1 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 HU4	JPL Sentry	2354	2084	1	1.5e-08	-9.77	-9.77	0	JPL: "Analysis based on 19 observations spanning 1.0756 days (2008-Apr-30.32444 to 2008-May-01.40002)." Diameter approximately 0.008 km. from mean, weighted H=28.1.

2008 HR3	NEODyS	1140	2045-2080	4	7.49e-09	-7.77	-8.10	0	NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2008/04/29.278 to 2008/04/30.280."
2008 HR3	JPL Sentry	1139	2039-2106	12	9.4e-08	-6.84	-7.11	0	JPL: "Analysis based on 15 observations spanning 1.0021 days (2008-Apr-29.27703 to 2008-Apr-30.2791)." Diameter approximately 0.038 km. from mean, weighted H=24.8.

2008 HO3	JPL Sentry	1748	2053-2088	3	4.6e-10	-5.63	-6.05	0	JPL: "Analysis based on 26 observations spanning 1.9404 days (2008-Apr-29.33863 to 2008-May-01.279)." Diameter approximately 1.100 km. from mean, weighted H=17.5.

2008 HD3	NEODyS	1140	2020-2090	29	1.04e-07	-3.72	-4.19	0	NEODyS: "Based on 30 optical observations (of which 0 are rejected as outliers) from 2008/04/28.265 to 2008/04/30.330."
2008 HD3	JPL Sentry	1139	2020-2107	42	1.3e-07	-3.67	-4.24	0	JPL: "Analysis based on 30 observations spanning 2.0647 days (2008-Apr-28.26455 to 2008-Apr-30.3293)." Diameter approximately 0.450 km. from mean, weighted H=19.4.

2008 HJ	NEODyS	1140	2077-2087	3	3.35e-05	-5.11	-5.21	0	NEODyS: "Based on 71 optical observations (of which 1 are rejected as outliers) from 2008/04/24.248 to 2008/04/30.377."
2008 HJ	JPL Sentry	1139	2077-2106	21	1.3e-04	-4.60	-5.13	0	JPL: "Analysis based on 70 observations spanning 6.1293 days (2008-Apr-24.24725 to 2008-Apr-30.376536)." Diameter approximately 0.024 km. from mean, weighted H=25.7.

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 1 May '08

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

2354	Noted that JPL Sentry has posted 2008 HU4 as an impact risk - see above Grabbed MPEC 2008-J06 - 2008 JC - see above
2014	Grabbed MPEC 2008-J03 - 2008 HT4 - see above Grabbed MPEC 2008-J04 - 2008 HU4 - see above Grabbed MPEC 2008-J05 - 2008 HV4 - see above
1748	Noted that JPL Sentry has posted 2008 HO3 as an impact risk - see above
1326	Grabbed MPEC 2008-J02 - 2008 HO3 - see above
1140	Noted that NEODyS has updated its 2008 HD3 risk assessment - see above Noted that NEODyS has updated its 2008 HJ risk assessment - see above Grabbed MPEC 2008-J01 - Daily Orbit Update - see above
1139	Noted that JPL Sentry has updated its 2008 HD3 risk assessment - see above Noted that JPL Sentry has updated its 2008 HJ risk assessment - see above Noted that JPL Sentry has updated its 2008 HR3 risk assessment - see above Noted that NEODyS has posted 2008 HR3 as an impact risk - see above

http://www.HohmannTransfer.com/mn/08/08122_0501.htm
Publisher information, privacy statement, and disclaimer.
This page is © Copyright 2008 Columbine, Inc. - All Rights Reserved
Any mentioned trademarks are the property of their respective owners.
Various tabular formats and data used on this page are acknowledged as belonging to JPL, MPC, NEODyS, and/or others.
Do NOT copy, mirror, or embed this page, but you are welcome to link to it, and you may embed the RSS news feed. All information here is subject to very frequent change during the day of news compilation. Individuals may make copies for their own private, non-commercial use. Please report broken links or other problems with this page to <webmaster@hohmanntransfer.com> (HTML 4.01 validation).
Important news updates are flagged by A/CC's RSS news feed (link).