2008-11-03 Tracking News

Contents on 3 November '08

IAU Minor Planet Center
- NEOCP Activity -- five listings: 3 new, 2 updated
- New MPECs -- seventeen MPECs
Observers -- 21 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 3 November '08

The MPC's NEO Confirmation Page has 5 listings: 3 new, 2 updated

When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had three new and two updated listings. All of these were "one nighters." So far The Tracking News has counted a total of 27 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 3 November '08

Minor Planet Electronic Circulars

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

MPEC 2008-V04 time-stamped "07:15 UT" - Daily Orbit Update - see below
MPEC 2008-V05 time-stamped "14:16 UT" - 2008 UZ201 - see below
MPEC 2008-V06 time-stamped "14:21 UT" - 2008 UA202 - see below
MPEC 2008-V07 time-stamped "14:24 UT" - 2008 UB202 - see below
MPEC 2008-V08 time-stamped "14:27 UT" - 2008 UC202 - see below
MPEC 2008-V09 time-stamped "14:30 UT" - 2008 UD202 - see below
MPEC 2008-V10 time-stamped "14:34 UT" - 2008 UE202 - see below
MPEC 2008-V11 time-stamped "14:36 UT" - 2008 VC - see below
MPEC 2008-V12 time-stamped "14:39 UT" - 2008 VD - see below
MPEC 2008-V13 time-stamped "14:44 UT" - 2008 VE - see below
MPEC 2008-V14 time-stamped "14:47 UT" - 2008 VF - see below
MPEC 2008-V15 time-stamped "14:59 UT" - 2008 VH - see below
MPEC 2008-V16 time-stamped "15:01 UT" - 2008 VK - see below
MPEC 2008-V17 time-stamped "15:04 UT" - 2008 VJ - see below
MPEC 2008-V18 time-stamped "15:07 UT" - 2008 VL - see below
MPEC 2008-V19 time-stamped "15:58 UT" - 2008 VM - see below
MPEC 2008-V20 time-stamped "19:15 UT" - 2008 VN

MPEC 2008-V20 - "19:15 UT" - 2008 VN

K08V00N 2008 VN (Q=4.256 AU, H=16.4 ~1.78 km) was discovered at 0852 UT on 1 Nov. by LINEAR, which observed it at Nov. 1.37-41p4 and 2.43-47p4. The discovery was confirmed by Sabino Canyon Obs. (Nov. 2.38p2), Desert Moon Obs. (Nov. 2.45-46p3), and Astronomical Research Obs. (ARO) (Nov. 3.28p3).

MPEC 2008-V19 - "15:58 UT" - 2008 VM

K08V00M 2008 VM (risk-listed, Earth MOID=0.2 LD, H=30.2 ~3m) was discovered at 0549 UT on 3 Nov. by the Catalina Sky Survey (CSS), which observed it at Nov. 3.24-37p12. The discovery was confirmed by the Mt. Lemmon Survey (MLS) (Nov. 3.35-39p8). This object is now within ten lunar distances (LD) of Earth, reaching 0.1 LD on 3 Nov. (INTRUDER).

MPEC 2008-V18 - "15:07 UT" - 2008 VL

K08V00L 2008 VL (risk-listed, Earth MOID=0.5 LD, H=27.6 ~10m) was discovered at 0939 UT on 2 Nov. by MLS, which observed it at Nov. 2.31-34p4 and 2.40-43p4. This object was within ten lunar distances (LD) of Earth, reaching 5.4 LD on 31 Oct.

MPEC 2008-V17 - "15:04 UT" - 2008 VJ

K08V00J 2008 VJ (small asteroid, H=22.5 ~107m) was discovered at 0618 UT on 2 Nov. by MLS, which observed it at Nov. 2.26-34p8. The discovery was confirmed by the Spacewatch 1.8m telescope (Nov. 3.34-35p2).

MPEC 2008-V16 - "15:01 UT" - 2008 VK

K08V00K 2008 VK (small asteroid, Earth MOID=8.8 LD, H=23.4 ~71m) was discovered at 0748 UT on 2 Nov. by CSS, which observed it at Nov. 2.33-35p4. The discovery was confirmed by Hibiscus Obs. (Nov. 2.53-56p2) and Sabino Canyon Obs. (Nov. 3.30p4).

MPEC 2008-V15 - "14:59 UT" - 2008 VH

K08V00H 2008 VH (H=19.9 ~355m) was discovered at 0327 UT on 2 Nov. by the Spacewatch 0.9m telescope, which observed it at Nov. 2.14-18p3. The discovery was confirmed by Spacewatch 1.8m (Nov. 2.28-29p3 & 3.25-26p3).

MPEC 2008-V14 - "14:47 UT" - 2008 VF

K08V00F 2008 VF (H=19.0 ~537m) was discovered at 0855 UT on 1 Nov. by LINEAR, which observed it at Nov. 1.37-42p4 and 2.43-47p5. The discovery was confirmed by Sabino Canyon Obs. (Nov. 3.34-35p3).

MPEC 2008-V13 - "14:44 UT" - 2008 VE

K08V00E 2008 VE (risk-listed, Q=4.484 AU, H=21.9 ~141m) was discovered at 0735 UT on 1 Nov. by LINEAR, which observed it at Nov. 1.32-36p5 and 2.37-41p5. The discovery was confirmed by MLS (Nov. 2.30-31p4 & 3.39-41p4) and Sabino Canyon Obs. (Nov. 2.36-37p3).

MPEC 2008-V12 - "14:39 UT" - 2008 VD

K08V00D 2008 VD (small asteroid, H=24.1 ~51m) was discovered at 0458 UT on 1 Nov. by LINEAR, which observed it at Nov. 1.21-24p4 and 2.19-24p5. The discovery was confirmed by MLS (Nov. 2.21-22p4 & 3.11p4) and Sabino Canyon Obs. (Nov. 2.25-26p3).

MPEC 2008-V11 - "14:36 UT" - 2008 VC

K08V00C 2008 VC (small asteroid, Earth MOID=2.5 LD, H=26.9 ~14m) was discovered at 0340 UT on 1 Nov. by LINEAR, which observed it at Nov. 1.15-19p4. The discovery was confirmed by MLS (Nov. 2.09-10p4 & 3.11p4) and Sabino Canyon Obs. (Nov. 2.19p2). This object is now within ten lunar distances (LD) of Earth, reaching 4.4 LD on 5 Nov.

MPEC 2008-V10 - "14:34 UT" - 2008 UE202

K08UK2E 2008 UE202 (small asteroid, H=22.4 ~112m) was discovered at 0935 UT on 31 Oct. by MLS, which observed it at Oct. 31.34-41p7 at V=20.8-22.1 and Nov. 3.22-23p3 at V=20.9-21.2. The discovery was confirmed by Spacewatch 1.8m (Nov. 1.18-19p3 & 2.18-19p3).

MPEC 2008-V09 - "14:30 UT" - 2008 UD202

K08UK2D 2008 UD202 (small asteroid, H=23.9 ~56m) was discovered at 0707 UT on 31 Oct. by MLS, which observed it at Oct. 31.30-32p4 at V=21.2-22.3, Nov. 1.25-29p4 at V=21.4-22.1, and 3.12-14p4 at V=20.8-22.0. The discovery was confirmed by Spacewatch 1.8m (Nov. 1.24-25p3 & 2.19-20p3).

MPEC 2008-V08 - "14:27 UT" - 2008 UC202

K08UK2C 2008 UC202 (small asteroid, Earth MOID=3.2 LD, H=28.3 ~7m) was discovered at 0615 UT on 31 Oct. by LINEAR, which observed it at Oct. 31.26-30p4 and Nov. 1.26-30p4. The discovery was confirmed by MLS (Nov. 2.23-26p3 & 3.11-12p4) and Sabino Canyon Obs. (Nov. 2.26-28p6). This object is now within ten lunar distances (LD) of Earth, reaching 5.4 LD on 3 Nov.

MPEC 2008-V07 - "14:24 UT" - 2008 UB202

K08UK2B 2008 UB202 (small asteroid, H=23.2 ~78m) was discovered at 0512 UT on 31 Oct. by Spacewatch 1.8m, which observed it at Oct. 31.22p3 at V=21.6-21.7, 31.28-29p3, Nov. 1.15-16p3, 2.16-17p3, and 3.22-23p3 at V=21.8-22.1. The discovery was confirmed by Magdalena Ridge Obs. (MRO) (Oct. 31.27-28p3).

MPEC 2008-V06 - "14:21 UT" - 2008 UA202

K08UK2A 2008 UA202 (risk-listed, Earth MOID=0.1 LD, H=29.4 ~4m) was discovered at 0830 UT on 29 Oct. by MLS, which observed it at Oct. 29.35-37p4 and 29.42-43p4. The discovery was confirmed by MRO (Oct. 29.42-43p4) and Spacewatch 1.8m (Oct. 30.32p2). This object is now within ten lunar distances (LD) of Earth, reaching 7.1 LD on 31 Oct.

MPEC 2008-V05 - "14:16 UT" - 2008 UZ201

K08UK1Z 2008 UZ201 (H=21.7 ~155m) was discovered at 0019 UT on 25 Oct. by the SZTE Asteroid Program (SZTE), which observed it at Oct. 25.01-03p7, 29.99-01p7, and 30.07p2. The discovery was confirmed by MLS (Nov. 2.27-30p4), Sandlot Obs. (Nov. 2.29-30p3), Junk Bond Obs. (Nov. 2.29p1 & 2.34-36p2), Spacewatch 1.8m (Nov. 2.30-31p3), Tiki Obs. (Nov. 2.54-57p2), and Jim Bedient via Faulkes Telescope North (Nov. 3.29-32p3).

<< DOU on 3 Nov. '08 >> MPEC 2008-V04 - "07:15 UT" - Daily Orbit Update

Observations of risk-listed objects
K08U95U 2008 UU95 (small asteroid, Q=4.214 AU, arc=3 days, H=23.4 ~71m) from Spacewatch 1.8m (Nov. 2.23-24p3)
Observations of recently (no longer) risk-listed objects
K08U07E 2008 UE7 (arc=7 days, H=20.3 ~295m) from Desert Moon Obs. (Nov. 2.41-43p3) and Petit Jean Mtn. South Obs. (PJMSO) (Nov. 2.43-44p7)
K08U05W 2008 UW5 (arc=7 days, H=18.0 ~851m) from CSS (Nov. 2.15-18p4)
K08U05T 2008 UT5 (small asteroid, arc=8 days, H=24.4 ~45m) from Desert Moon Obs. (Nov. 2.22-25p3)
K08T27D 2008 TD27 (arc=23 days, H=20.0 ~339m) from Desert Moon Obs. (Nov. 2.07-14p3)
K08S11V 2008 SV11 (Q=4.503 AU, arc=38 days, H=18.2 ~776m) from MLS (Nov. 2.10-12p3)
Observations of small asteroids (H>22.0)
K08T26M 2008 TM26 (arc=24 days, H=23.3 ~74m) from MLS (Nov. 2.22-25p4)
Observations of other objects
K08U90N 2008 UN90 (arc=6 days, H=19.9 ~355m) from Desert Moon Obs. (Nov. 2.17-20p3)
K08U90L 2008 UL90 (IEO, Q=0.959 AU, arc=6 days, H=18.3 ~741m) from MLS (Nov. 1.48-52p4)
K08U07D 2008 UD7 (arc=7 days, H=18.9 ~562m) from Desert Moon Obs. (Nov. 2.28-30p3)
K08U04S 2008 US4 (arc=27 days, H=20.7 ~245m) from Paus Obs. (Oct. 26.89p1), Balzaretto Obs. (Nov. 1.93-94p3), and PJMSO (Nov. 2.30p7)
K08T26N 2008 TN26 (arc=23 days, H=20.2 ~309m) from MLS (Nov. 1.24-28p4)
K08SP1S 2008 SS251 (arc=37 days, H=21.0 ~214m) from Desert Moon Obs. (Nov. 2.33-39p3)
K08S07V 2008 SV7 (arc=39 days, H=21.6 ~162m) from LINEAR (Nov. 2.43-47p5)
K08S07P 2008 SP7 (Q=4.200 AU, arc=40 days, H=19.0 ~537m) from Spacewatch 0.9m (Nov. 2.26-29p3), LINEAR (Nov. 2.31-36p5), and PJMSO (Nov. 2.33-34p6)
K08S01R 2008 SR1 (arc=40 days, H=20.3 ~295m) from Spacewatch 1.8m (Nov. 2.26-27p3)
K08S01Q 2008 SQ1 (Q=4.682 AU, arc=2 opp, H=18.4 ~708m) from Hradec Kralove Obs. (Nov. 1.83-84p5) and CSS (Nov. 2.19-20p3)
K08S00Q 2008 SQ (arc=42 days, H=19.5 ~426m) from CSS (Nov. 2.19-20p4)
K08S00E 2008 SE (arc=43 days, H=19.4 ~446m) from Hradec Kralove Obs. (Nov. 1.92-93p5)
K08R24Y 2008 RY24 (arc=3 opp, H=17.8 ~933m) from LINEAR (Nov. 2.08-13p5)
K08P03L 2008 PL3 (arc=90 days, H=19.3 ~467m) from LINEAR (Nov. 2.14-19p5)
K07D41M 2007 DM41 (arc=2 opp, H=21.7 ~155m) from LINEAR (Nov. 2.25-29p4)
K07A12E 2007 AE12 (arc=5 opp, H=19.6 ~407m) from LINEAR (Nov. 2.43-48p5) and Desert Moon Obs. (Nov. 2.48-49p3)
K06SL7Z 2006 SZ217 (arc=3 opp, H=17.3 ~1.17 km) from PJMSO (Nov. 2.42-43p5)
K06B00G 2006 BG (arc=4 opp, H=18.6 ~645m) from MLS (Nov. 2.26-30p4)
K05W55S 2005 WS55 (arc=4 opp, H=16.1 ~2.04 km, q=1.108 AU) from Raheny Obs. (Nov. 2.93-97p2)
K05T51Z 2005 TZ51 (arc=3 opp, H=17.9 ~891m) from Raheny Obs. (Nov. 2.88p1 & 2.96p1)
K04T11U 2004 TU11 (arc=2 opp, H=21.2 ~195m) from MLS (Nov. 2.35-39p3)
K03SH0G 2003 SG170 (i=36.9°, arc=4 opp, H=17.7 ~977m) from MLS (Nov. 2.17-20p4)
K01V05G 2001 VG5 (arc=6 opp, H=16.7 ~1.55 km) from LINEAR (Nov. 2.31-36p5)
K01U04Y 2001 UY4 (q=0.309 AU, arc=5 opp, H=18.3 ~741m) from Balzaretto Obs. (Nov. 1.95-96p3)
K01T01W 2001 TW1 (arc=5 opp, H=19.2 ~490m) from PJMSO (Nov. 2.28-29p5)
K01SR6G 2001 SG276 (arc=4 opp, H=17.7 ~977m) from LINEAR (Nov. 2.26-30p5)
K00S43P 2000 SP43 (arc=5 opp, H=18.6 ~645m) from LINEAR (Nov. 2.07-12p5)
J0135 190135 2005 QE30 from Vicksburg Obs. (Nov. 1.06-07p3)
J0119 190119 2004 VA64 from CSS (Nov. 2.25-26p3)
I9552 189552 2000 RL77 from LINEAR (Nov. 2.08-13p5)
I5851 185851 2000 DP107 from CSS (Nov. 2.15-18p4)
H1576 171576 1999 VP11 from LINEAR (Oct. 26.36-41p10 & 27.36-41p5) and CSS (Oct. 30.34-36p4)
F9368 159368 1979 QB from MLS (Nov. 1.44-48p4)
F5140 155140 2005 UD from MLS (Nov. 1.21-24p4)
F5110 155110 2005 TB from MLS (Nov. 1.30-33p4)
F4991 154991 2005 BX26 from LINEAR (Nov. 2.25-28p3)
F3306 153306 2001 JL1 from MLS (Nov. 1.30-32p4)
D8847 138847 2000 VE62 from LINEAR (Nov. 2.19-24p5)
D7925 137925 2000 BJ19 from MLS (Nov. 1.48-52p4)
D7799 137799 1999 YB from LINEAR (Nov. 2.26-30p5)
D7052 137052 1998 VO33 from MLS (Nov. 1.37-39p3)
D7044 137044 1998 UC50 from MLS (Nov. 1.16-19p4)
D7032 137032 1998 UO1 from Raheny Obs. (Nov. 2.89p1 & 2.94p1)
D6773 136773 1996 TR6 from CSS (Nov. 2.36-39p4)
66008 66008 1998 QH2 from LINEAR (Nov. 2.07-11p4)
65733 65733 1993 PC from LINEAR (Nov. 2.08-12p3)
53319 53319 1999 JM8 from CSS (Nov. 2.33-35p4)
52768 52768 1998 OR2 from LINEAR (Nov. 2.43-48p4)
07480 7480 Norwan (1994 PC) from MLS (Nov. 1.48-52p4)
04587 4587 Rees (3239 T-2) from CSS (Nov. 2.32-35p4)
04183 4183 Cuno (1959 LM) from MLS (Nov. 1.21-24p4) and Raheny Obs. (Nov. 2.86p1 & 2.91-95p2)
02212 2212 Hephaistos (1978 SB) from LINEAR (Nov. 2.31-36p5) and Spacewatch 0.9m (Nov. 2.33-36p3)

Observers on 3 November '08

A total of 21 observing facilities appear in today's MPECs.

Code	Observer / observatory
`H55`	Astronomical Research Obs. in Illinois, 1 in MPEC 2008-V20 -- 2008 VN
`A81`	Balzaretto Obs. in Italy, 2 in MPEC 2008-V04 -- 2008 US4, 2001 UY4
`703`	Catalina Sky Survey (CSS) in Arizona, 11 in MPECs 2008-V04, 2008-V16 & 2008-V19 -- 2008 VM, 2008 VK, 2008 UW5, 2008 SQ1, 2008 SQ, 53319, 190119, 185851, 171576, 136773, 4587
`448`	Desert Moon Obs. in New Mexico, 8 in MPECs 2008-V04 & 2008-V20 -- 2008 VN, 2008 UT5, 2008 UN90, 2008 UE7, 2008 UD7, 2008 TD27, 2008 SS251, 2007 AE12
`F654`	Jim Bedient in Hawaii via Faulkes Telescope North in Hawaii, 1 in MPEC 2008-V05 -- 2008 UZ201
`F84`	Hibiscus Obs. in Tahiti, 1 in MPEC 2008-V16 -- 2008 VK
`048`	Hradec Kralove Obs. in the Czech Republic, 2 in MPEC 2008-V04 -- 2008 SQ1, 2008 SE
`701`	Junk Bond Obs. in Arizona, 1 in MPEC 2008-V05 -- 2008 UZ201
`704`	LINEAR in New Mexico, 24 in MPECs 2008-V04, 2008-V08, 2008-V11, 2008-V12, 2008-V13, 2008-V14 & 2008-V20 -- 2008 VN, 2008 VF, 2008 VE, 2008 VD, 2008 VC, 2008 UC202, 2008 SV7, 2008 SP7, 2008 RY24, 2008 PL3, 2007 DM41, 2007 AE12, 2001 VG5, 2001 SG276, 2000 SP43, 66008, 65733, 52768, 189552, 171576, 154991, 138847, 137799, 2212
`H01`	Magdalena Ridge Obs. (MRO) in New Mexico, 2 in MPECs 2008-V06 & 2008-V07 -- 2008 UB202, 2008 UA202
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 27 in MPECs 2008-V04, 2008-V05, 2008-V06, 2008-V08, 2008-V09, 2008-V10, 2008-V11, 2008-V12, 2008-V13, 2008-V17, 2008-V18 & 2008-V19 -- 2008 VM, 2008 VL, 2008 VJ, 2008 VE, 2008 VD, 2008 VC, 2008 UZ201, 2008 UL90, 2008 UE202, 2008 UD202, 2008 UC202, 2008 UA202, 2008 TN26, 2008 TM26, 2008 SV11, 2006 BG, 2004 TU11, 2003 SG170, 159368, 155140, 155110, 153306, 137925, 137052, 137044, 7480, 4183
`B49`	Paus Obs. in Spain, 1 in MPEC 2008-V04 -- 2008 US4
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 5 in MPEC 2008-V04 -- 2008 US4, 2008 UE7, 2008 SP7, 2006 SZ217, 2001 TW1
`J41`	Raheny Obs. in Ireland, 4 in MPEC 2008-V04 -- 2005 WS55, 2005 TZ51, 137032, 4183
`461`	SZTE Asteroid Program in Hungary, 1 in MPEC 2008-V05 -- 2008 UZ201
`854`	Sabino Canyon Obs. in Arizona, 7 in MPECs 2008-V08, 2008-V11, 2008-V12, 2008-V13, 2008-V14, 2008-V16 & 2008-V20 -- 2008 VN, 2008 VK, 2008 VF, 2008 VE, 2008 VD, 2008 VC, 2008 UC202
`H36`	Sandlot Obs. in Kansas, 1 in MPEC 2008-V05 -- 2008 UZ201
`691`	Spacewatch 0.9m telescope in Arizona, 3 in MPECs 2008-V04 & 2008-V15 -- 2008 VH, 2008 SP7, 2212
`291`	Spacewatch 1.8m telescope in Arizona, 9 in MPECs 2008-V04, 2008-V05, 2008-V06, 2008-V07, 2008-V09, 2008-V10, 2008-V15 & 2008-V17 -- 2008 VJ, 2008 VH, 2008 UZ201, 2008 UU95, 2008 UE202, 2008 UD202, 2008 UB202, 2008 UA202, 2008 SR1
`F85`	Tiki Obs. in Tahiti, 1 in MPEC 2008-V05 -- 2008 UZ201
`H47`	Vicksburg Obs. in Mississippi, 1 in MPEC 2008-V04 -- 190135

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

Impact Risk Monitoring on 3 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 VM	JPL Sentry	1830	2016-2031	6	2.4e-05	-6.80	-6.82	0	JPL: "Analysis based on 14 observations spanning .13741 days (2008-Nov-03.2487 to 2008-Nov-03.38611)." Diameter approximately 0.003 km. from mean, weighted H=30.2.

2008 VL	JPL Sentry	1830	2010-2101	717	1.1e-05	-6.50	-8.00	0	JPL: "Analysis based on 8 observations spanning .12404 days (2008-Nov-02.31035 to 2008-Nov-02.43439)." Diameter approximately 0.008 km. from mean, weighted H=28.0.

2008 VE	JPL Sentry	1734	2107	1	3.0e-08	-6.21	-6.21	0	JPL: "Analysis based on 21 observations spanning 2.0936 days (2008-Nov-01.31627 to 2008-Nov-03.40991)." Diameter approximately 0.150 km. from mean, weighted H=21.8.

2008 UA202	JPL Sentry	1627	2022-2105	209	8.6e-04	-5.05	-5.96	0	JPL: "Analysis based on 14 observations spanning .96621 days (2008-Oct-29.35449 to 2008-Oct-30.3207)." Diameter approximately 0.005 km. from mean, weighted H=29.3.

2008 UU95	JPL Sentry	1328	2062-2101	9	1.3e-08	-7.22	-7.62	0	JPL: "Analysis based on 24 observations spanning 2.8599 days (2008-Oct-30.37925 to 2008-Nov-02.23918)." Diameter approximately 0.071 km. from mean, weighted H=23.4.
2008 UU95	NEODyS	1328	2046-2089	11	2.8e-08	-6.82	-6.98	0	NEODyS: "Based on 24 optical observations (of which 0 are rejected as outliers) from 2008/10/30.380 to 2008/11/02.240."

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 3 November '08

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

1935	Grabbed MPEC 2008-V20 - 2008 VN - see above
1830	Noted that JPL Sentry has posted 2008 VL as an impact risk - see above Noted that JPL Sentry has posted 2008 VM as an impact risk - see above
1734	Noted that JPL Sentry has posted 2008 VE as an impact risk - see above
1627	Noted that JPL Sentry has posted 2008 UA202 as an impact risk - see above Grabbed MPEC 2008-V12 - 2008 VD - see above Grabbed MPEC 2008-V13 - 2008 VE - see above Grabbed MPEC 2008-V14 - 2008 VF - see above Grabbed MPEC 2008-V15 - 2008 VH - see above Grabbed MPEC 2008-V16 - 2008 VK - see above Grabbed MPEC 2008-V17 - 2008 VJ - see above Grabbed MPEC 2008-V18 - 2008 VL - see above Grabbed MPEC 2008-V19 - 2008 VM - see above
1441	Grabbed MPEC 2008-V05 - 2008 UZ201 - see above Grabbed MPEC 2008-V06 - 2008 UA202 - see above Grabbed MPEC 2008-V07 - 2008 UB202 - see above Grabbed MPEC 2008-V08 - 2008 UC202 - see above Grabbed MPEC 2008-V09 - 2008 UD202 - see above Grabbed MPEC 2008-V10 - 2008 UE202 - see above Grabbed MPEC 2008-V11 - 2008 VC - see above
1328	Noted that JPL Sentry has updated its 2008 UU95 risk assessment - see above Noted that NEODyS has updated its 2008 UU95 risk assessment - see above Grabbed MPEC 2008-V04 - Daily Orbit Update - see above

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