2008-10-06 Tracking News

JPL is reporting that "an atmospheric impact will very likely occur during early morning twilight over northern Sudan, north-eastern Africa, at 2:46 UT Tuesday morning" for the newly discovered (see below) tiny asteroid 2008 TC3. This A/CC sky graphic shows 2008 TC3's location two and three-quarter hours before the event as seen geocentrically, although, due its closeness to Earth, its sky location would appear very differently depending on your actual location. See news links here.

Contents on 6 October '08

IAU Minor Planet Center
- NEOCP Activity -- eight listings: 2 new, 6 updated
- New MPECs -- 20 MPECs
Observers -- 33 observing facilities
Impact Risk Monitoring -- six 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 6 October '08

The MPC's NEO Confirmation Page has 8 listings: 2 new, 6 updated

When last checked at 2357 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two new and six updated listings. Of these, six were "one nighters." So far The Tracking News has counted a total of eleven objects listed on the NEOCP at some point today.

New MPECs on 6 October '08

Minor Planet Electronic Circulars

As of last check at 2357 UTC, there have been 20 MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2008-T49 time-stamped "06:10 UT" - Daily Orbit Update - see below
MPEC 2008-T50 time-stamped "14:59 UT" - 2008 TC3 - see below
MPEC 2008-T51 time-stamped "18:18 UT" - 2008 TC3 - see below
MPEC 2008-T52 time-stamped "19:15 UT" - 2008 TC3 - see below
MPEC 2008-T53 time-stamped "20:07 UT" - 2008 TC3 - see below
MPEC 2008-T54 time-stamped "20:20 UT" - 2008 TC3 - see below
MPEC 2008-T55 time-stamped "20:53 UT" - 2008 TC3 - see below
MPEC 2008-T56 time-stamped "21:07 UT" - 2008 TC3 - see below
MPEC 2008-T57 time-stamped "21:21 UT" - 2008 TC3 - see below
MPEC 2008-T58 time-stamped "21:37 UT" - 2008 TC3 - see below
MPEC 2008-T59 time-stamped "21:46 UT" - 2008 TC3 - see below
MPEC 2008-T60 time-stamped "22:08 UT" - 2008 TC3 - see below
MPEC 2008-T61 time-stamped "22:15 UT" - 2008 TC3 - see below
MPEC 2008-T62 time-stamped "22:27 UT" - 2008 TC3 - see below
MPEC 2008-T63 time-stamped "22:41 UT" - 2008 TC3 - see below
MPEC 2008-T64 time-stamped "22:49 UT" - 2008 TC3 - see below
MPEC 2008-T65 time-stamped "22:59 UT" - 2008 TC3 - see below
MPEC 2008-T66 time-stamped "23:05 UT" - 2008 TC3 - see below
MPEC 2008-T67 time-stamped "23:30 UT" - 2008 TC3 - see below
MPEC 2008-T68 time-stamped "23:40 UT" - 2008 TC3

MPEC 2008-T68 - "23:40 UT" - 2008 TC3

K08T03C 2008 TC3 (risk-listed, Earth MOID=0.0 LD, H=30.4 ~3m) from La Sagra Obs. (Oct. 6.94-96p5), Posadas Obs. (Oct. 6.94-95p3), Marxuquera Obs. (Oct. 6.96-98p4), Montcabre Obs. (Oct. 6.97-98p5), and Nazaret Obs. (Oct. 6.98p9) This object is now within ten lunar distances (LD) of Earth, reaching 0.0 LD on 7 Oct. (INTRUDER).

MPEC 2008-T67 - "23:30 UT" - 2008 TC3

K08T03C 2008 TC3 (risk-listed, Earth MOID=0.0 LD, H=30.4 ~3m) from Nazaret Obs. (Oct. 6.92p1 & 6.96-97p30), Remanzacco Obs. (Oct. 6.95-96p3), Chante-Perdrix Obs. (Oct. 6.96p16), Montcabre Obs. (Oct. 6.96-97p6), Albigneux Obs. (Oct. 6.96p3), and Gnosca Obs. (Oct. 6.96-97p2) This object is now within ten lunar distances (LD) of Earth, reaching 0.0 LD on 7 Oct. (INTRUDER).

MPEC 2008-T66 - "23:05 UT" - 2008 TC3

K08T03C 2008 TC3 (risk-listed, Earth MOID=0.0 LD, H=30.4 ~3m) from Montcabre Obs. (Oct. 6.95-96p6), Nazaret Obs. (Oct. 6.95-96p14), and Aravaca Obs. (Oct. 6.95-96p3) This object is now within ten lunar distances (LD) of Earth, reaching 0.0 LD on 7 Oct. (INTRUDER).

MPEC 2008-T65 - "22:59 UT" - 2008 TC3

K08T03C 2008 TC3 (risk-listed, Earth MOID=0.0 LD, H=30.4 ~3m) from Mallorca Obs. (Oct. 6.85-88p6), La Sagra Obs. (Oct. 6.86-93p8), Chante-Perdrix Obs. (Oct. 6.93p13), Gnosca Obs. (Oct. 6.93-95p7), and Remanzacco Obs. (Oct. 6.93-94p3) This object is now within ten lunar distances (LD) of Earth, reaching 0.0 LD on 7 Oct. (INTRUDER).

MPEC 2008-T64 - "22:49 UT" - 2008 TC3

K08T03C 2008 TC3 (risk-listed, Earth MOID=0.0 LD, H=30.4 ~3m) from Marxuquera Obs. (Oct. 6.94p3), Nazaret Obs. (Oct. 6.94-95p12), and Montcabre Obs. (Oct. 6.94p5) This object is now within ten lunar distances (LD) of Earth, reaching 0.0 LD on 7 Oct. (INTRUDER).

MPEC 2008-T63 - "22:41 UT" - 2008 TC3

K08T03C 2008 TC3 (risk-listed, Earth MOID=0.0 LD, H=30.4 ~3m) from Remanzacco Obs. (Oct. 6.86p1 & 6.92-93p4), Posadas Obs. (Oct. 6.91p3), Chante-Perdrix Obs. (Oct. 6.91p18), Great Shefford Obs. (Oct. 6.92-93p4), Montcabre Obs. (Oct. 6.92-93p4), Nazaret Obs. (Oct. 6.93-94p7), and Albigneux Obs. (Oct. 6.93p2) This object is now within ten lunar distances (LD) of Earth, reaching 0.0 LD on 7 Oct. (INTRUDER).

MPEC 2008-T62 - "22:27 UT" - 2008 TC3

K08T03C 2008 TC3 (risk-listed, Earth MOID=0.0 LD, H=30.4 ~3m) from Nazaret Obs. (Oct. 6.92p3) and Marxuquera Obs. (Oct. 6.92-93p3) This object is now within ten lunar distances (LD) of Earth, reaching 0.0 LD on 7 Oct. (INTRUDER).

MPEC 2008-T61 - "22:15 UT" - 2008 TC3

K08T03C 2008 TC3 (risk-listed, Earth MOID=0.0 LD, H=30.4 ~3m) from Gnosca Obs. (Oct. 6.89p3), Schiaparelli Obs. (Oct. 6.90p5), Atlante Obs. (Oct. 6.91-92p3), Nazaret Obs. (Oct. 6.92p5), and Montcabre Obs. (Oct. 6.92p3) This object is now within ten lunar distances (LD) of Earth, reaching 0.0 LD on 7 Oct. (INTRUDER).

MPEC 2008-T60 - "22:08 UT" - 2008 TC3

K08T03C 2008 TC3 (risk-listed, Earth MOID=0.0 LD, H=30.4 ~3m) from CAST Obs. (Oct. 6.88-89p2), Nazaret Obs. (Oct. 6.90-92p13), and Montcabre Obs. (Oct. 6.91p3) This object is now within ten lunar distances (LD) of Earth, reaching 0.0 LD on 7 Oct. (INTRUDER).

MPEC 2008-T59 - "21:46 UT" - 2008 TC3

K08T03C 2008 TC3 (risk-listed, Earth MOID=0.0 LD, H=30.4 ~3m) from Farra d'Isonzo Obs. (Oct. 6.78-79p3) and Nazaret Obs. (Oct. 6.89-90p7) This object is now within ten lunar distances (LD) of Earth, reaching 0.0 LD on 7 Oct. (INTRUDER).

MPEC 2008-T58 - "21:37 UT" - 2008 TC3

K08T03C 2008 TC3 (risk-listed, Earth MOID=0.0 LD, H=30.4 ~3m) from Gnosca Obs. (Oct. 6.86-88p3) and Nazaret Obs. (Oct. 6.88-89p10) This object is now within ten lunar distances (LD) of Earth, reaching 0.0 LD on 7 Oct. (INTRUDER).

MPEC 2008-T57 - "21:21 UT" - 2008 TC3

K08T03C 2008 TC3 (risk-listed, Earth MOID=0.0 LD, H=30.4 ~3m) from La Sagra Obs. (Oct. 6.84-86p4), Wildberg Obs. (Oct. 6.87p4), and Montcabre Obs. (Oct. 6.88p3) This object is now within ten lunar distances (LD) of Earth, reaching 0.0 LD on 7 Oct. (INTRUDER).

MPEC 2008-T56 - "21:07 UT" - 2008 TC3

K08T03C 2008 TC3 (risk-listed, Earth MOID=0.0 LD, H=30.4 ~3m) from Mallorca Obs. (Oct. 6.78-84p9) and Montcabre Obs. (Oct. 6.86-87p3) This object is now within ten lunar distances (LD) of Earth, reaching 0.0 LD on 7 Oct. (INTRUDER).

MPEC 2008-T55 - "20:53 UT" - 2008 TC3

K08T03C 2008 TC3 (risk-listed, Earth MOID=0.0 LD, H=30.4 ~3m) from Great Shefford Obs. (Oct. 6.82p2), Gnosca Obs. (Oct. 6.84p2), Remanzacco Obs. (Oct. 6.84-85p4), Klet Obs. (Oct. 6.84-86p11), and Montcabre Obs. (Oct. 6.85-86p3) This object is now within ten lunar distances (LD) of Earth, reaching 0.0 LD on 7 Oct. (INTRUDER).

MPEC 2008-T54 - "20:20 UT" - 2008 TC3

K08T03C 2008 TC3 (risk-listed, Earth MOID=0.0 LD, H=30.4 ~3m) from Gnosca Obs. (Oct. 6.80-83p3), Schiaparelli Obs. (Oct. 6.82-83p6), and Klet Obs. (Oct. 6.84p5) This object is now within ten lunar distances (LD) of Earth, reaching 0.0 LD on 7 Oct. (INTRUDER).

MPEC 2008-T53 - "20:07 UT" - 2008 TC3

K08T03C 2008 TC3 (risk-listed, Earth MOID=0.0 LD, H=30.4 ~3m) from Gnosca Obs. (Oct. 6.78-79p2), Chante-Perdrix Obs. (Oct. 6.79-80p3), Great Shefford Obs. (Oct. 6.81p3), and Schiaparelli Obs. (Oct. 6.82p5) This object is now within ten lunar distances (LD) of Earth, reaching 0.0 LD on 7 Oct. (INTRUDER).

MPEC 2008-T52 - "19:15 UT" - 2008 TC3

K08T03C 2008 TC3 (risk-listed, Earth MOID=0.0 LD, H=30.4 ~3m) from Engelhardt Obs. Zelenchukskaya Station (Oct. 6.74-75p9), Crni Vrh Obs. (Oct. 6.75p3), and Gnosca Obs. (Oct. 6.76-78p4) This object is now within ten lunar distances (LD) of Earth, reaching 0.0 LD on 7 Oct. (INTRUDER).

MPEC 2008-T51 - "18:18 UT" - 2008 TC3

K08T03C 2008 TC3 (risk-listed, Earth MOID=0.0 LD, H=30.4 ~3m) from Zelenchukskaya Sta. (Oct. 6.72-73p5) This object is now within ten lunar distances (LD) of Earth, reaching 0.0 LD on 7 Oct. (INTRUDER).

MPEC 2008-T50 - "14:59 UT" - 2008 TC3

K08T03C 2008 TC3 (risk-listed, Earth MOID=0.0 LD, H=30.4 ~3m) was discovered at 0639 UT on 6 Oct. by the Mt. Lemmon Survey (MLS), which observed it at Oct. 6.28-38p12. The discovery was confirmed by Sabino Canyon Obs. (Oct. 6.35p3), Cristovao Jacques via RAS Obs. Moorook (Oct. 6.61-62p3), and the Siding Spring Survey (SSS) (Oct. 6.64p8). This object is now within ten lunar distances (LD) of Earth, reaching 0.0 LD on 7 Oct. (INTRUDER).

<< DOU on 6 Oct. '08 >> MPEC 2008-T49 - "06:10 UT" - Daily Orbit Update

Observations of risk-listed objects
K08T00E 2008 TE (small asteroid, arc=4 days, H=27.7 ~10m) from Astronomical Research Obs. (ARO) (Oct. 5.19-22p3 at V=22.4-6)
K08S82H 2008 SH82 (arc=9 days, H=21.1 ~204m) from ARO (Oct. 5.06-08p3)
K08S11V 2008 SV11 (Q=4.501 AU, arc=10 days, H=18.3 ~741m) from ARO (Oct. 5.16-18p3)
K08S07T 2008 ST7 (small asteroid, arc=11 days, H=24.1 ~51m) from ARO (Oct. 5.27-29p3)
K08S00T 2008 ST (small asteroid, arc=7 days, H=27.1 ~13m) from program code 8 via Faulkes Telescope North (Sept. 29.27p5)
Observations of recently (no longer) risk-listed objects
K08S00O 2008 SO (arc=12 days, H=20.8 ~234m) from La Sagra Obs. (Oct. 3.04-07p3)
Observations of small asteroids (H>22.0)
K08T02F 2008 TF2 (arc=2 days, H=25.1 ~32m) from Jim Young via Table Mtn. Obs. (Oct. 6.14-16p4)
K08T01C 2008 TC1 (arc=3 days, H=24.0 ~54m) from Mt. John Obs. (Oct. 5.47-49p3)
K08T00Z 2008 TZ (arc=3 days, H=25.3 ~29m) from ARO (Oct. 5.30-31p3)
K08T00L 2008 TL (arc=4 days, H=27.5 ~11m) from ARO (Oct. 5.24-26p2 at V=22.1-2)
K08T00A 2008 TA (arc=4 days, H=23.7 ~62m) from Mt. John Obs. (Oct. 5.50p3)
K08SF0Y 2008 SY150 (arc=6 days, H=24.4 ~45m) from Young/Table Mtn. (Oct. 6.17-18p4)
K08O08Q 2008 OQ8 (arc=64 days, H=22.1 ~129m) from MLS (Oct. 2.31-33p4)
Observations of almost-small asteroids (21.7<H<=22.0)
K08T00F 2008 TF (arc=4 days, H=21.8 ~148m) from Mt. John Obs. (Oct. 5.51p3)
Observations of other objects
K08T01A 2008 TA1 (arc=3 days, H=18.5 ~676m) from La Sagra Obs. (Oct. 5.06-09p3)
K08SF0W 2008 SW150 (arc=6 days, H=19.8 ~371m) from Mt. John Obs. (Oct. 5.58-59p3)
K08S07P 2008 SP7 (Q=4.207 AU, arc=12 days, H=19.0 ~537m) from Crni Vrh Obs. (Oct. 4.97-00p4)
K08S01R 2008 SR1 (arc=11 days, H=20.4 ~282m) from Posadas Obs. (Oct. 5.02-03p3)
K08S01Q 2008 SQ1 (Q=4.682 AU, arc=2 opp, H=18.2 ~776m) from La Sagra Obs. (Oct. 4.88-90p3) and El Guijo Obs. (Oct. 5.87-89p3)
K08S00E 2008 SE (arc=15 days, H=19.2 ~490m) from La Sagra Obs. (Oct. 4.92-95p3) and Posadas Obs. (Oct. 5.06-07p3)
K08R80E 2008 RE80 (arc=21 days, H=18.2 ~776m) from MLS (Oct. 2.31-33p4)
K08R26S 2008 RS26 (Q=4.797 AU, arc=33 days, H=17.8 ~933m) from Mt. John Obs. (Oct. 5.36p2 & 5.57p2)
K08P03L 2008 PL3 (arc=61 days, H=19.4 ~446m) from the Spacewatch 0.9m telescope (Oct. 2.11-13p3)
K06W02Z 2006 WZ2 (arc=3 opp, H=16.8 ~1.48 km) from Crni Vrh Obs. (Oct. 5.05-08p4)
K04RG4Z 2004 RZ164 (Q=4.120 AU, arc=2 opp, H=19.0 ~537m) from Mt. John Obs. (Oct. 5.43-46p4)
K02S41S 2002 SS41 (i=63.7°, arc=3 opp, H=17.2 ~1.23 km) from Posadas Obs. (Oct. 4.97-98p3)
K01U16Z 2001 UZ16 (arc=3 opp, H=19.5 ~426m) from La Fecha Obs. (Oct. 5.88-92p2)
K01S09K 2001 SK9 (q=0.378 AU, arc=4 opp, H=18.0 ~851m) from Posadas Obs. (Oct. 4.88-89p3)
J98S70J 1998 SJ70 (arc=3 opp, H=18.4 ~708m) from Posadas Obs. (Oct. 4.00-01p4)
J0135 190135 2005 QE30 from Vicksburg Obs. (Oct. 4.14-16p3)
I5851 185851 2000 DP107 from Mt. Tuffley Obs. (Oct. 5.94p3)
G4400 164400 2005 GN59 from Mt. Tuffley Obs. (Oct. 5.91p3)
G2873 162873 2001 FB7 from La Sagra Obs. (Sept. 29.96-98p3)
D7044 137044 1998 UC50 from La Sagra Obs. (Sept. 30.94-97p3)
16960 16960 1998 QS52 from La Fecha Obs. (Oct. 5.85p2) and Mt. Tuffley Obs. (Oct. 5.92p3)
09856 9856 1991 EE from Crni Vrh Obs. (Oct. 5.01-04p4)
08567 8567 1996 HW1 from Mt. Tuffley Obs. (Oct. 5.93p3)
04450 4450 Pan (1987 SY) from La Sagra Obs. (Oct. 5.15-17p3)
01627 1627 Ivar (1929 SH) from Mt. Tuffley Obs. (Oct. 5.95-96p3)

Observers on 6 October '08

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

Code	Observer / observatory
`A86`	Albigneux Obs. in France, 1 in MPECs 2008-T63 & 2008-T67 -- 2008 TC3
`J20`	Aravaca Obs., 1 in MPEC 2008-T66 -- 2008 TC3
`H55`	Astronomical Research Obs. (ARO) in Illinois, 6 in MPEC 2008-T49 -- 2008 TZ, 2008 TL, 2008 TE, 2008 SV11, 2008 ST7, 2008 SH82
`J51`	Atlante Obs. in the Canary Islands, 1 in MPEC 2008-T61 -- 2008 TC3
`235`	CAST Obs. in Italy, 1 in MPEC 2008-T60 -- 2008 TC3
`A77`	Chante-Perdrix Obs. in France, 1 in MPECs 2008-T53, 2008-T63, 2008-T65 & 2008-T67 -- 2008 TC3
`106`	Crni Vrh Obs. in Slovenia, 4 in MPECs 2008-T49 & 2008-T52 -- 2008 TC3, 2008 SP7, 2006 WZ2, 9856
`J27`	El Guijo Obs. in Spain, 1 in MPEC 2008-T49 -- 2008 SQ1
`114`	Engelhardt Obs. Zelenchukskaya Station in Karachay-Cherkessia, 1 in MPECs 2008-T51 & 2008-T52 -- 2008 TC3
`595`	Farra d'Isonzo Obs. in Italy, 1 in MPEC 2008-T59 -- 2008 TC3
`F658`	program code 8 via Faulkes Telescope North in Hawaii, 1 in MPEC 2008-T49 -- 2008 ST
`143`	Gnosca Obs. in Switzerland, 1 in MPECs 2008-T52, 2008-T53, 2008-T54, 2008-T55, 2008-T58, 2008-T61, 2008-T65 & 2008-T67 -- 2008 TC3
`J95`	Great Shefford Obs. in England, 1 in MPECs 2008-T53, 2008-T55 & 2008-T63 -- 2008 TC3
`046`	Klet Obs. in the Czech Republic, 1 in MPECs 2008-T54 & 2008-T55 -- 2008 TC3
`J34`	La Fecha Obs. in Spain, 2 in MPEC 2008-T49 -- 2001 UZ16, 16960
`J75`	La Sagra Obs. in Spain, 8 in MPECs 2008-T49, 2008-T57, 2008-T65 & 2008-T68 -- 2008 TC3, 2008 TA1, 2008 SQ1, 2008 SO, 2008 SE, 162873, 137044, 4450
`620`	Mallorca Obs. on Mallorca, 1 in MPECs 2008-T56 & 2008-T65 -- 2008 TC3
`952`	Marxuquera Obs. in Spain, 1 in MPECs 2008-T62, 2008-T64 & 2008-T68 -- 2008 TC3
`213`	Montcabre Obs. in Spain, 1 in MPECs 2008-T55, 2008-T56, 2008-T57, 2008-T60, 2008-T61, 2008-T63, 2008-T64, 2008-T66, 2008-T67 & 2008-T68 -- 2008 TC3
`474`	Mt. John Obs. in New Zealand, 6 in MPEC 2008-T49 -- 2008 TF, 2008 TC1, 2008 TA, 2008 SW150, 2008 RS26, 2004 RZ164
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 3 in MPECs 2008-T49 & 2008-T50 -- 2008 TC3, 2008 RE80, 2008 OQ8
`J93`	Mt. Tuffley Obs. in England, 5 in MPEC 2008-T49 -- 185851, 16960, 164400, 8567, 1627
`J47`	Nazaret Obs. in Spain, 1 in MPECs 2008-T58, 2008-T59, 2008-T60, 2008-T61, 2008-T62, 2008-T63, 2008-T64, 2008-T66, 2008-T67 & 2008-T68 -- 2008 TC3
`J53`	Posadas Obs. in Spain, 6 in MPECs 2008-T49, 2008-T63 & 2008-T68 -- 2008 TC3, 2008 SR1, 2008 SE, 2002 SS41, 2001 SK9, 1998 SJ70
`D90.`	Cristovao Jacques in Brazil via RAS Obs. Moorook in South Australia, 1 in MPEC 2008-T50 -- 2008 TC3
`473`	Remanzacco Obs. in Italy, 1 in MPECs 2008-T55, 2008-T63, 2008-T65 & 2008-T67 -- 2008 TC3
`854`	Sabino Canyon Obs. in Arizona, 1 in MPEC 2008-T50 -- 2008 TC3
`204`	Schiaparelli Obs. in Italy, 1 in MPECs 2008-T53, 2008-T54 & 2008-T61 -- 2008 TC3
`E12`	Siding Spring Survey in New South Wales, 1 in MPEC 2008-T50 -- 2008 TC3
`691`	Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2008-T49 -- 2008 PL3
`6735`	Jim Young via Table Mtn. Obs. in southern California, 2 in MPEC 2008-T49 -- 2008 TF2, 2008 SY150
`H47`	Vicksburg Obs. in Mississippi, 1 in MPEC 2008-T49 -- 190135
`198`	Wildberg Obs. in Germany, 1 in MPEC 2008-T57 -- 2008 TC3

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

Impact Risk Monitoring on 6 October '08

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2357 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 TC3	NEODyS	1950	2008	1	9.98e-01	1.69	1.69	0	NEODyS: "Based on 26 optical observations (of which 0 are rejected as outliers) from 2008/10/06.278 to 2008/10/06.643."
2008 TC3	JPL Sentry	2123	R E M O V E D						JPL #2 for the day: Risk listing removed

2008 TE	NEODyS	1438	2023-2084	12	3.15e-05	-5.27	-5.27	0	NEODyS: "Based on 35 optical observations (of which 0 are rejected as outliers) from 2008/10/01.248 to 2008/10/05.222."
2008 TE	JPL Sentry	1437	2023-2047	3	3.2e-05	-5.25	-5.26	0	JPL: "Analysis based on 35 observations spanning 3.9740 days (2008-Oct-01.24709 to 2008-Oct-05.22111)." Diameter approximately 0.010 km. from mean, weighted H=27.7.

2008 SH82	NEODyS	1438	2043-2081	3	9.23e-07	-4.40	-4.42	0	NEODyS: "Based on 38 optical observations (of which 0 are rejected as outliers) from 2008/09/26.214 to 2008/10/05.081."
2008 SH82	JPL Sentry	1437	2043-2081	3	9.5e-07	-4.35	-4.38	0	JPL: "Analysis based on 38 observations spanning 8.8671 days (2008-Sep-26.21299 to 2008-Oct-05.08005)." Diameter approximately 0.210 km. from mean, weighted H=21.0.

2008 SV11	NEODyS	1438	R E M O V E D						-
2008 SV11	JPL Sentry	1437	R E M O V E D						JPL: Risk listing removed at 0951 UTC.

2008 ST7	NEODyS	1438	2062-2089	12	3.59e-06	-5.17	-5.51	0	NEODyS: "Based on 75 optical observations (of which 6 are rejected as outliers) from 2008/09/24.301 to 2008/10/05.290."
2008 ST7	JPL Sentry	1437	2073-2108	41	4.2e-05	-4.24	-4.81	0	JPL: "Analysis based on 69 observations spanning 10.990 days (2008-Sep-24.29993 to 2008-Oct-05.28952)." Diameter approximately 0.052 km. from mean, weighted H=24.1.

2008 ST	NEODyS	1438	2047-2084	17	2.96e-05	-5.93	-5.97	0	NEODyS: "Based on 36 optical observations (of which 0 are rejected as outliers) from 2008/09/22.162 to 2008/09/29.274."
2008 ST	JPL Sentry	1437	2052	1	2.8e-08	-8.76	-8.76	0	JPL: "Analysis based on 36 observations spanning 7.1120 days (2008-Sep-22.16113 to 2008-Sep-29.27316)." Diameter approximately 0.013 km. from mean, weighted H=27.1.

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 6 October '08

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

2357	Grabbed MPEC 2008-T65 - 2008 TC3 - see above Grabbed MPEC 2008-T66 - 2008 TC3 - see above Grabbed MPEC 2008-T67 - 2008 TC3 - see above Grabbed MPEC 2008-T68 - 2008 TC3 - see above
2259	Grabbed MPEC 2008-T61 - 2008 TC3 - see above Grabbed MPEC 2008-T62 - 2008 TC3 - see above Grabbed MPEC 2008-T63 - 2008 TC3 - see above Grabbed MPEC 2008-T64 - 2008 TC3 - see above
2212	Grabbed MPEC 2008-T59 - 2008 TC3 - see above Grabbed MPEC 2008-T60 - 2008 TC3 - see above
2141	Grabbed MPEC 2008-T56 - 2008 TC3 - see above Grabbed MPEC 2008-T57 - 2008 TC3 - see above Grabbed MPEC 2008-T58 - 2008 TC3 - see above
2123	Noted that JPL Sentry has removed 2008 TC3 as an impact risk - see above
2056	Grabbed MPEC 2008-T55 - 2008 TC3 - see above
2047	Noted that JPL Sentry has posted 2008 TC3 as an impact risk - see above
2027	Grabbed MPEC 2008-T53 - 2008 TC3 - see above Grabbed MPEC 2008-T54 - 2008 TC3 - see above
1950	Noted that NEODyS has posted 2008 TC3 as an impact risk - see above
1930	Grabbed MPEC 2008-T52 - 2008 TC3 - see above
1859	Grabbed MPEC 2008-T50 - 2008 TC3 - see above Grabbed MPEC 2008-T51 - 2008 TC3 - see above
1438	Noted that NEODyS has updated its 2008 SH82 risk assessment - see above Noted that NEODyS has updated its 2008 ST risk assessment - see above Noted that NEODyS has updated its 2008 ST7 risk assessment - see above Noted that NEODyS has removed 2008 SV11 as an impact risk - see above Noted that NEODyS has updated its 2008 TE risk assessment - see above Grabbed MPEC 2008-T49 - Daily Orbit Update - see above
1437	Noted that JPL Sentry has updated its 2008 SH82 risk assessment - see above Noted that JPL Sentry has updated its 2008 ST risk assessment - see above Noted that JPL Sentry has updated its 2008 ST7 risk assessment - see above Noted that JPL Sentry has removed 2008 SV11 as an impact risk - see above Noted that JPL Sentry has updated its 2008 TE risk assessment - see above

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