2008-11-07 Tracking News

Contents on 7 November '08

IAU Minor Planet Center
- NEOCP Activity -- seven listings: 1 new, 6 updated
- New MPECs -- five MPECs
Observers -- twelve 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 7 November '08

The MPC's NEO Confirmation Page has 7 listings: 1 new, 6 updated

When last checked today, the Minor Planet Center's NEO discovery Confirmation Page was unavailable. Yesterday it had one new and six updated listings. Of these, six were "one nighters." The Tracking News counted a total of eleven objects listed on the NEOCP at some point on this day.

New MPECs on 7 November '08

Minor Planet Electronic Circulars

There were five MPECs issued this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2008-V37 time-stamped "07:17 UT" - Daily Orbit Update - see below
MPEC 2008-V38 time-stamped "16:44 UT" - 2008 VQ4 - see below
MPEC 2008-V39 time-stamped "16:47 UT" - 2008 VR4 - see below
MPEC 2008-V40 time-stamped "16:51 UT" - 2008 VS4 - see below
MPEC 2008-V41 time-stamped "19:58 UT" - 2000 YN30

MPEC 2008-V41 - "19:58 UT" - 2000 YN30

K00Y30N 2000 YN30 (q=1.654 AU, Q=6.203 AU, H=17.0 ~1.35 km) from the Spacewatch 0.9m telescope (Oct. 30.48-51p3 & Nov. 3.47-50p3)

MPEC 2008-V40 - "16:51 UT" - 2008 VS4

K08V04S 2008 VS4 (risk-listed, H=24.4 ~45m) was discovered at 0954 UT on 7 Nov. by the Mt. Lemmon Survey (MLS), which observed it at Nov. 7.41-50p7. The discovery was confirmed by Magdalena Ridge Obs. (MRO) (Nov. 7.46-47p3).

MPEC 2008-V39 - "16:47 UT" - 2008 VR4

K08V04R 2008 VR4 (risk-listed, Earth MOID=0.9 LD, H=22.7 ~98m) was discovered at 0137 UT on 7 Nov. by the Catalina Sky Survey (CSS), which observed it at Nov. 7.07-09p4 and 7.27-29p4. The discovery was confirmed by MRO (Nov. 7.16-18p3).

MPEC 2008-V38 - "16:44 UT" - 2008 VQ4

K08V04Q 2008 VQ4 (H=18.9 ~562m) was discovered at 0453 UT on 4 Nov. by LINEAR, which observed it at Nov. 4.20-24p4. The discovery was confirmed by the Spacewatch 1.8m telescope (Nov. 7.10-11p3), MLS (Nov. 7.13-17p12), MRO (Nov. 7.23-24p3), and Sabino Canyon Obs. (Nov. 7.25-27p3).

<< DOU on 7 Nov. '08 >> MPEC 2008-V37 - "07:17 UT" - Daily Orbit Update

Observations of risk-listed objects
K08V03Z 2008 VZ3 (small asteroid, arc=1 day, H=24.5 ~43m) from Spacewatch 1.8m (Nov. 7.12-15p6)
K08U99W 2008 UW99 (small asteroid, arc=6 days, H=24.4 ~45m) from Spacewatch 1.8m (Nov. 6.24-25p3)
K08U95U 2008 UU95 (small asteroid, Q=4.173 AU, arc=7 days, H=23.4 ~71m) from MLS (Nov. 6.27-29p4)
Observations of recently (no longer) risk-listed objects
K08U05W 2008 UW5 (arc=12 days, H=18.0 ~851m) from Modra Obs. (Nov. 6.80-83p2)
K08U05T 2008 UT5 (small asteroid, arc=12 days, H=24.4 ~45m) from MLS (Nov. 6.25-27p4)
Observations of small asteroids (H>22.0)
K08V00J 2008 VJ (arc=4 days, H=22.9 ~89m) from MLS (Nov. 6.30-31p4 at V=20.8-22.2)
K08U99U 2008 UU99 (arc=7 days, H=25.1 ~32m) from Spacewatch 1.8m (Nov. 6.36-37p3)
K08U99T 2008 UT99 (arc=7 days, H=24.4 ~45m) from Spacewatch 1.8m (Nov. 6.44-45p3)
K08U91Z 2008 UZ91 (arc=9 days, H=22.3 ~117m) from MLS (Nov. 6.32-34p4)
K08U07A 2008 UA7 (arc=11 days, H=24.9 ~35m) from MLS (Nov. 6.32-34p4)
K08U05U 2008 UU5 (arc=12 days, H=23.2 ~78m) from MLS (Nov. 6.33-34p3)
Observations of other objects
K08U91W 2008 UW91 (arc=10 days, H=21.6 ~162m) from Spacewatch 1.8m (Nov. 7.08-09p3)
K08U90O 2008 UO90 (arc=10 days, H=20.5 ~269m) from Spacewatch 1.8m (Nov. 6.29-30p3)
K08TF7E 2008 TE157 (Q=4.442 AU, arc=35 days, H=20.5 ~269m) from MLS (Nov. 6.19-20p4)
K08T02D 2008 TD2 (arc=31 days, H=21.7 ~155m) from Spacewatch 0.9m (Nov. 3.32-36p3)
K08S00Q 2008 SQ (arc=46 days, H=19.6 ~407m) from LINEAR (Nov. 6.19-24p5)
K08Q01D 2008 QD1 (arc=75 days, H=18.9 ~562m) from CSS (Nov. 6.26-28p4)
K08N00U 2008 NU (Q=4.202 AU, arc=128 days, H=17.5 ~1.07 km) from Jarnac Obs. (Nov. 6.06-09p3)
K08M01R 2008 MR1 (arc=3 opp, H=18.4 ~708m) from LINEAR (Nov. 6.25-30p5)
K08M00Z 2008 MZ (Q=4.207 AU, arc=144 days, H=18.6 ~645m) from Mirasteilas Obs. (Nov. 6.96-97p3)
K07J35J 2007 JJ35 (i=56.1°, arc=2 opp, H=18.4 ~708m) from Spacewatch 0.9m (Oct. 31.28-32p2)
K07E88M 2007 EM88 (arc=2 opp, H=19.4 ~446m) from Spacewatch 0.9m (Nov. 1.51-53p2)
K07D41M 2007 DM41 (arc=2 opp, H=21.7 ~155m) from Spacewatch 0.9m (Nov. 6.08-12p3)
K06S19U 2006 SU19 (arc=3 opp, H=19.1 ~513m) from Spacewatch 0.9m (Nov. 2.10-14p2)
K05W56J 2005 WJ56 (arc=3 opp, H=18.1 ~812m) from LINEAR (Nov. 6.44-48p4)
K05W55S 2005 WS55 (arc=4 opp, H=16.1 ~2.04 km, q=1.108 AU) from LINEAR (Nov. 6.13-18p5)
K05T51Z 2005 TZ51 (arc=3 opp, H=17.9 ~891m) from LINEAR (Nov. 6.15-18p4)
K04T19L 2004 TL19 (arc=2 opp, H=20.6 ~257m) from CSS (Nov. 6.19-21p4)
K03Y01X 2003 YX1 (arc=2 opp, H=20.9 ~224m) from Spacewatch 1.8m (Nov. 6.51-52p3)
K03W25X 2003 WX25 (Q=4.606 AU, arc=2 opp, H=18.6 ~645m) from CSS (Nov. 6.19-21p4)
K03SH0G 2003 SG170 (i=36.9°, arc=4 opp, H=17.7 ~977m) from CSS (Nov. 6.16-18p4)
K01W02J 2001 WJ2 (arc=3 opp, H=19.7 ~389m) from Mirasteilas Obs. (Nov. 6.93-94p3)
K01V05G 2001 VG5 (arc=6 opp, H=16.7 ~1.55 km) from Spacewatch 0.9m (Nov. 6.43-47p3)
K01U04Y 2001 UY4 (q=0.309 AU, arc=5 opp, H=18.3 ~741m) from Balzaretto Obs. (Nov. 5.90p3)
J96T09E 1996 TE9 (arc=3 opp, H=18.8 ~589m) from CSS (Nov. 6.11-12p3)
I9700 189700 2001 TA45 from CSS (Nov. 6.13-15p3)
I9062 189062 2000 VA45 from CSS (Nov. 6.13-15p4)
G3051 163051 2001 YJ4 from Spacewatch 1.8m (Nov. 6.51-52p3)
G2900 162900 2001 HG31 from Spacewatch 0.9m (Nov. 1.28-29p2) and Mirasteilas Obs. (Nov. 6.88-89p3)
F9929 159929 2005 UK from MLS (Nov. 6.41-43p4 at V=20.7-22.2)
F5110 155110 2005 TB from Mirasteilas Obs. (Nov. 6.85-86p3)
F4991 154991 2005 BX26 from MLS (Nov. 6.21-22p4)
D8852 138852 2000 WN10 from CSS (Nov. 6.43-46p3)
D7032 137032 1998 UO1 from CSS (Nov. 6.10-12p4)
22753 22753 1998 WT from Spacewatch 0.9m (Nov. 6.49-51p2)
13651 13651 1997 BR from CSS (Nov. 6.39-41p4)
03200 3200 Phaethon (1983 TB) from LINEAR (Nov. 6.25-30p5)
02212 2212 Hephaistos (1978 SB) from Spacewatch 0.9m (Nov. 6.32-36p3)
01865 1865 Cerberus (1971 UA) from Ondrejov Obs. (Nov. 3.71-81p6)

Observers on 7 November '08

Twelve observing facilities appeared in this day's MPECs.

Code	Observer / observatory
`A81`	Balzaretto Obs. in Italy, 1 in MPEC 2008-V37 -- 2001 UY4
`703`	Catalina Sky Survey (CSS) in Arizona, 11 in MPECs 2008-V37 & 2008-V39 -- 2008 VR4, 2008 QD1, 2004 TL19, 2003 WX25, 2003 SG170, 1996 TE9, 189700, 189062, 138852, 137032, 13651
`G92`	Jarnac Obs. in Arizona, 1 in MPEC 2008-V37 -- 2008 NU
`704`	LINEAR in New Mexico, 7 in MPECs 2008-V37 & 2008-V38 -- 2008 VQ4, 2008 SQ, 2008 MR1, 2005 WS55, 2005 WJ56, 2005 TZ51, 3200
`H01`	Magdalena Ridge Obs. (MRO) in New Mexico, 3 in MPECs 2008-V38, 2008-V39 & 2008-V40 -- 2008 VS4, 2008 VR4, 2008 VQ4
`B67`	Mirasteilas Obs. in Switzerland, 4 in MPEC 2008-V37 -- 2008 MZ, 2001 WJ2, 162900, 155110
`118`	Modra Obs. in Slovakia, 1 in MPEC 2008-V37 -- 2008 UW5
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 11 in MPECs 2008-V37, 2008-V38 & 2008-V40 -- 2008 VS4, 2008 VQ4, 2008 VJ, 2008 UZ91, 2008 UU95, 2008 UU5, 2008 UT5, 2008 UA7, 2008 TE157, 159929, 154991
`557`	Ondrejov Obs. in the Czech Republic, 1 in MPEC 2008-V37 -- 1865
`854`	Sabino Canyon Obs. in Arizona, 1 in MPEC 2008-V38 -- 2008 VQ4
`691`	Spacewatch 0.9m telescope in Arizona, 10 in MPECs 2008-V37 & 2008-V41 -- 2008 TD2, 2007 JJ35, 2007 EM88, 2007 DM41, 2006 SU19, 2001 VG5, 2000 YN30, 22753, 162900, 2212
`291`	Spacewatch 1.8m telescope in Arizona, 9 in MPECs 2008-V37 & 2008-V38 -- 2008 VZ3, 2008 VQ4, 2008 UW99, 2008 UW91, 2008 UU99, 2008 UT99, 2008 UO90, 2003 YX1, 163051

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

Impact Risk Monitoring on 7 November '08

**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.
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 VS4	JPL Sentry	2358	2011-2106	344	9.1e-07	-5.28	-6.12	0	JPL: "Analysis based on 10 observations spanning .08330 days (2008-Nov-07.413 to 2008-Nov-07.4963)." Diameter approximately 0.048 km. from mean, weighted H=24.2.

2008 VB4	NEODyS	1230	2011-2069	116	3.65e-08	-8.43	-9.03	0	NEODyS: "Based on 12 optical observations (of which 0 are rejected as outliers) from 2008/11/06.345 to 2008/11/06.458."
2008 VB4	JPL Sentry	0505	2012-2106	21	3.1e-07	-7.71	-8.18	0	JPL: "Analysis based on 12 observations spanning .11318 days (2008-Nov-06.34423 to 2008-Nov-06.45741)." Diameter approximately 0.008 km. from mean, weighted H=28.2.

2008 VZ3	JPL Sentry	1230	R E M O V E D						JPL #2 for the day: Risk listing removed at 1051 UTC.

2008 UW99	JPL Sentry	1230	R E M O V E D						JPL: Risk listing removed at 1051 UTC.

2008 UU95	JPL Sentry	1230	2062-2085	4	4.9e-09	-7.52	-7.62	0	JPL: "Analysis based on 31 observations spanning 6.9105 days (2008-Oct-30.37925 to 2008-Nov-06.28973)." Diameter approximately 0.072 km. from mean, weighted H=23.4.

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 7 November '08

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

0758 11/9	Grabbed MPEC 2008-V38 - 2008 VQ4 - see above Grabbed MPEC 2008-V39 - 2008 VR4 - see above Grabbed MPEC 2008-V40 - 2008 VS4 - see above Grabbed MPEC 2008-V41 - 2000 YN30 - see above
2358	Noted that JPL Sentry has posted 2008 VS4 as an impact risk - see above
1230	Noted that JPL Sentry has updated its 2008 UU95 risk assessment - see above Noted that JPL Sentry has removed 2008 UW99 as an impact risk - see above Noted that NEODyS has posted 2008 VB4 as an impact risk - see above Noted that JPL Sentry has removed 2008 VZ3 as an impact risk - see above Grabbed MPEC 2008-V37 - Daily Orbit Update - see above
0505	Noted that JPL Sentry has posted 2008 VB4 as an impact risk - see above
0106	Noted that JPL Sentry has posted 2008 VZ3 as an impact risk - see above

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