26 Nov '07 Tracking News

Contents on 26 November '07

IAU Minor Planet Center
- NEOCP Activity -- none
- New MPECs -- nine MPECs
- Observers -- 45 observing facilities
Impact Risk Monitoring -- two 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 news: framed access (best), RSS news feed (flags updates), or redirection - Note: A/CC has a main Web site and a backup site, which now has its own backup 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 this year 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 26 November '07

The MPC's NEO Confirmation Page is currently empty

The NEOCP is currently empty and hasn't been noted by The Tracking News as being active yet today (last checked at 2354 UTC).

New MPECs on 26 November '07

Minor Planet Electronic Circulars

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

MPEC 2007-W66 time-stamped "07:09 UT" - Daily Orbit Update - see below
MPEC 2007-W67 time-stamped "15:40 UT" - Comet C/2007 D1 (LINEAR) - see below
MPEC 2007-W68 time-stamped "15:48 UT" - Comet C/2007 M2 (Catalina) - see below
MPEC 2007-W69 time-stamped "15:53 UT" - Comet P/2007 T2 (Kowalski) - see below
MPEC 2007-W70 time-stamped "15:57 UT" - Comet C/2007 T5 (Gibbs) - see below
MPEC 2007-W71 time-stamped "16:05 UT" - Comet P/2007 T6 (Catalina) - see below
MPEC 2007-W72 time-stamped "16:14 UT" - Comet C/2007 U1 (LINEAR) - see below
MPEC 2007-W73 time-stamped "16:20 UT" - Comet P/2007 V2 (Hill) - see below
MPEC 2007-W74 time-stamped "16:41 UT" - Observations of Comets

MPEC 2007-W74 - "16:41 UT" - Observations of Comets

PK07V010 P/2007 V1 from Hadano Obs. (Nov. 12.62p3 & 14.73-74p3), Schiaparelli Obs. (Nov. 13.17p1), Remanzacco Obs. (Nov. 16.91p1), Kiev Comet Station (Nov. 19.90-94p5), and the Mt. Lemmon Survey (MLS) (Nov. 20.22-24p4)
PK07R040 P/2007 R4 (Garradd) from Lumezzane Obs. (Nov. 11.89p2), Schiaparelli Obs. (Nov. 17.91-95p2), and Montcabre Obs. (Nov. 25.90-91p2)
PK07H010 P/2007 H1 (McNaught) from Hadano Obs. (Oct. 8.58-59p3 & Nov. 12.42-43p4), Pinsoro Obs. (Nov. 10.89-90p3), Remanzacco Obs. (Nov. 16.86p2), Moriyama Obs. (Nov. 17.43-44p2), Ageo Obs. (Nov. 17.55-56p3), and Auckland Obs. (Nov. 21.42p3)
PK07C020 P/2007 C2 (Catalina) from the Catalina Sky Survey (CSS) (Nov. 7.40-43p2) and Lumezzane Obs. (Nov. 12.05p2)
CK06W030 C/2006 W3 (Christensen) from Pinsoro Obs. (Nov. 11.16-17p3), Hiratsuka Obs. (Nov. 17.59-60p3), Moriyama Obs. (Nov. 17.66p2), and Ageo Obs. (Nov. 23.66p3)
CK06U060 C/2006 U6 (Spacewatch) from Southern TIE (SoTIE) (Nov. 16.08p4) and Auckland Obs. (Nov. 21.40p3)
CK06S050 C/2006 S5 (Hill) from Pinsoro Obs. (Nov. 11.20p3), LINEAR (Nov. 15.39-44p5), Vega del Thader Obs. (Nov. 17.09-10p3), Hiratsuka Obs. (Nov. 17.64-65p3), and Moriyama Obs. (Nov. 17.71-72p2)
CK06S030 C/2006 S3 (LONEOS) from Red Barn Obs. (Nov. 12.09-11p3) and Schiaparelli Obs. (Nov. 17.85p1 & 17.90p1)
CK06O02F C/2006 OF2 (Broughton) from Pinsoro Obs. (Nov. 10.83-84p3), SoTIE (Nov. 16.07p4), Vicksburg Obs. (Nov. 24.05-06p2), and Montcabre Obs. (Nov. 25.81-82p3)
CK06M010 C/2006 M1 (LINEAR) from Hadano Obs. (Oct. 8.70p3), Pinsoro Obs. (Nov. 11.08-09p3), the Spacewatch 0.9m telescope (Nov. 17.09-12p3), LINEAR (Nov. 17.25-31p5 & 20.07-11p4), and Moriyama Obs. (Nov. 17.57p2)
CK06K010 C/2006 K1 (McNaught) from LINEAR (Nov. 17.25-28p4), Hiratsuka Obs. (Nov. 17.57-58p3), and Auckland Obs. (Nov. 21.41p3)
PK04F030 P/2004 F3 (NEAT) from Ageo Obs. (Nov. 12.72-73p2 & 20.68-69p2) and Schiaparelli Obs. (Nov. 16.00p1 & 17.05p1)
0191P 191P/McNaught from Hadano Obs. (Oct. 8.68-69p4), Pinsoro Obs. (Nov. 11.00-01p3), Lumezzane Obs. (Nov. 11.97p4), LINEAR (Nov. 16.26-29p3), Linceo Obs. (Nov. 16.94-96p3), Schiaparelli Obs. (Nov. 16.99p1 & 17.04p1), Masquefa Obs. (Nov. 16.99-00p3), Moriyama Obs. (Nov. 17.58-60p2), Auckland Obs. (Nov. 21.41-42p2 & 21.48p2), and Ageo Obs. (Nov. 23.62-63p3)
0150P 150P/LONEOS from CSS (Nov. 12.39-41p4) and Table Mtn. Obs. (Nov. 20.23-25p2, 20.29p1 & 21.22-25p2)
0136P 136P/Mueller 3 from Lumezzane Obs. (Nov. 11.81-82p2 & 18.77p1)
0117P 117P/Helin-Roman-Alu 1 from Pinsoro Obs. (Nov. 10.98-99p3), Schiaparelli Obs. (Nov. 16.98p1 & 17.03p1), Malaga Obs. (Nov. 18.99-01p3), and Montcabre Obs. (Nov. 25.78p3)
0110P 110P/Hartley 3 from Hadano Obs. (Nov. 12.70-71p4), Hiratsuka Obs. (Nov. 17.62-63p3), and Moriyama Obs. (Nov. 17.65p2)
0093P 93P/Lovas 1 from Yamagata Obs. (Oct. 18.62-63p4), Pinsoro Obs. (Nov. 10.92-94p3), Moriyama Obs. (Nov. 17.45-46p2), Cesson Obs. (Nov. 17.89-90p2 & 25.73p1), Montcabre Obs. (Nov. 18.85-86p3 & 24.86p3), Kiev Comet Station (Nov. 19.79-81p4), Auckland Obs. (Nov. 21.44p3), Montana Blanca Obs. (Nov. 22.82-83p2), Hamamatsu-Yuto Obs. (Nov. 23.51p2), Vega del Thader Obs. (Nov. 23.90p5), Vicksburg Obs. (Nov. 24.10-11p2), Monte Deva Obs. (Nov. 25.03-04p3), and Carmelita Obs. (Nov. 25.73-74p3)
0074P 74P/Smirnova-Chernykh from Hadano Obs. (Nov. 12.68-69p3), Moriyama Obs. (Nov. 17.69p2), and Ageo Obs. (Nov. 21.70-71p2)
0065P 65P/Gunn from Pinsoro Obs. (Nov. 11.21-23p2) and Ageo Obs. (Nov. 16.80-81p2)
0050P 50P/Arend from Hadano Obs. (Oct. 8.66-67p4 & Nov. 12.48p3), Pinsoro Obs. (Nov. 11.02-03p3), Moriyama Obs. (Nov. 17.47-48p2), Cesson Obs. (Nov. 17.86p1, 17.93p1 & 21.87-89p3), Vicksburg Obs. (Nov. 21.07p2), and Montcabre Obs. (Nov. 24.87p2)
0046P 46P/Wirtanen from SoTIE (Nov. 16.07p2), Auckland Obs. (Nov. 21.43p2), Montana Blanca Obs. (Nov. 21.79-80p3), Ageo Obs. (Nov. 24.40p3), and Montcabre Obs. (Nov. 25.79-80p3)
0029P 29P/Schwassmann-Wachmann 1 from Pinsoro Obs. (Nov. 11.18-19p3), Vega del Thader Obs. (Nov. 17.06-07p5), Moriyama Obs. (Nov. 17.67-68p2), LINEAR (Nov. 18.35-40p4 & 20.26-31p5), Gualba Obs. (Nov. 21.23p2), and Montcabre Obs. (Nov. 24.88-89p3)
0017P 17P/Holmes from Moletai Obs. (Nov. 5.68-69p2 & 5.87-90p5), Pinsoro Obs. (Nov. 11.10-11p3), Hadano Obs. (Nov. 12.59-60p3), Schiaparelli Obs. (Nov. 13.10p2 & 13.18p1), Moriyama Obs. (Nov. 17.50p2), Hiratsuka Obs. (Nov. 17.54-55p3), Cesson Obs. (Nov. 17.88p1, 17.94p1 & 25.73p1), Vallauris Obs. (Nov. 18.05p1), Montcabre Obs. (Nov. 18.80-82p3, 24.84-85p3 & 25.76-77p3), Guadarrama Obs. (Nov. 18.95-96p3), Malaga Obs. (Nov. 19.02-03p4), Hamamatsu-Yuto Obs. (Nov. 19.63p3, 21.49-51p2 & 23.55-56p3), Uppsala Obs. (Nov. 19.71-72p4), Petit Jean Mtn. South Obs. (PJMSO) (Nov. 20.19-23p8), Desert Moon Obs. (Nov. 20.23-25p5), Siegen Obs. (Nov. 22.84p3 & 23.91p3), Nazaret Obs. (Nov. 22.88-91p3 & 24.91p3), Monte Deva Obs. (Nov. 22.94-95p5 & 25.02-03p5), Tosa Obs. (Nov. 24.58-59p3), and Atlante Obs. (Nov. 24.87p2)
0008P 8P/Tuttle from Pinsoro Obs. (Nov. 11.05-07p3) and Tosa Obs. (Nov. 24.60-61p3)

MPEC 2007-W73 - "16:20 UT" - Comet P/2007 V2 (Hill)

PK07V020 P/2007 V2 (q=2.773 AU, Q=5.361 AU, TP=2007 July 31.3514 TT) from Schiaparelli Obs. (Nov. 16.97p1 & 17.03p1) and Montcabre Obs. (Nov. 18.97-00p3)

MPEC 2007-W72 - "16:14 UT" - Comet C/2007 U1 (LINEAR)

CK07U010 C/2007 U1 (LINEAR) (i=157.8°, q=3.329 AU, TP=2008 Aug. 7.2098 TT) from Lumezzane Obs. (Nov. 8.10-11p4), Hadano Obs. (Nov. 12.77-82p4), Ageo Obs. (Nov. 15.77p2, 17.79p2 & 18.75p3), Schiaparelli Obs. (Nov. 17.09p1 & 17.15p1), Kiev Comet Station (Nov. 20.02-04p3), and Montcabre Obs. (Nov. 24.95p1 & 24.00p1)

MPEC 2007-W71 - "16:05 UT" - Comet P/2007 T6 (Catalina)

PK07T060 P/2007 T6 (Catalina) (q=2.233 AU, Q=6.755 AU, TP=2007 Aug. 19.7107 TT) from Pinsoro Obs. (Nov. 11.24p2), LINEAR (Nov. 20.38-43p5), and Ageo Obs. (Nov. 20.73p3)

MPEC 2007-W70 - "15:57 UT" - Comet C/2007 T5 (Gibbs)

CK07T050 C/2007 T5 (Gibbs) (i=45.6°, q=4.048 AU, Q=89.892 AU, TP=2008 May 24.4275 TT) from Hadano Obs. (Nov. 12.83p2), Kiev Comet Station (Nov. 20.05-07p4), and LINEAR (Nov. 20.34-38p4)

MPEC 2007-W69 - "15:53 UT" - Comet P/2007 T2 (Kowalski)

PK07T020 P/2007 T2 (Kowalski) (q=0.696 AU, Q=5.486 AU, TP=2007 Sept. 19.0220 TT) from Montcabre Obs. (Nov. 19.15-19p3), Kiev Comet Station (Nov. 20.10-11p4), and MLS (Nov. 20.44p1)

MPEC 2007-W68 - "15:48 UT" - Comet C/2007 M2 (Catalina)

CK07M020 C/2007 M2 (Catalina) (i=81.0°, q=3.541 AU, Q=7670.711 AU, TP=2008 Dec. 8.59097 TT) from MLS (Nov. 3.52p4) and Ageo Obs. (Nov. 23.83-84p2 & 24.83-84p2)

MPEC 2007-W67 - "15:40 UT" - Comet C/2007 D1 (LINEAR)

CK07D010 C/2007 D1 (LINEAR) (i=41.4°, q=8.794 AU, TP=2007 June 19.36422 TT) from Ageo Obs. (Nov. 17.83-84p2 & 18.80-81p2)

<< DOU on 26 Nov. '07 >> MPEC 2007-W66 - "07:09 UT" - Daily Orbit Update

Observations of risk-listed objects
K07W03Y 2007 WY3 (Q=4.958 AU, arc=7 days, H=18.1 ~812m) from Astronomical Research Obs. (ARO) (Nov. 25.34-37p4)
K07VJ1E 2007 VE191 (small asteroid, arc=11 days, H=23.8 ~59m) from Dark Roseanne Obs. (Nov. 25.96-97p3)
Observations of recently (no longer) risk-listed objects
K07W03V 2007 WV3 (arc=7 days, H=19.2 ~490m) from ARO (Nov. 25.37-39p3)
K07W00A 2007 WA (small asteroid, arc=8 days, H=24.7 ~39m) from Schiaparelli Obs. (Nov. 17.08p5) and Shenton Park Obs. (Nov. 24.74-75p3)
K07VO3P 2007 VP243 (arc=5 days, H=21.5 ~170m) from MLS (Nov. 20.16-17p4)
K07VJ1B 2007 VB191 (small asteroid, arc=11 days, H=25.1 ~32m) from ARO (Nov. 25.40-42p6)
K07V12D 2007 VD12 (arc=19 days, H=20.0 ~339m) from Schiaparelli Obs. (Nov. 17.09-10p2)
Observations of small asteroids (H>22.0)
K07VI4L 2007 VL184 (arc=6 days, H=24.1 ~51m) from Schiaparelli Obs. (Nov. 13.15p2)
K07VD8E 2007 VE138 (arc=2 days, H=25.8 ~23m) from Schiaparelli Obs. (Nov. 13.11-12p3)
Observations of other objects
K07VI4M 2007 VM184 (arc=13 days, H=20.9 ~224m) from LONEOS (Nov. 19.37-44p4)
K07V06T 2007 VT6 (arc=22 days, H=20.3 ~295m) from LONEOS (Nov. 18.28-32p4)
K07V04Q 2007 VQ4 (Q=4.004 AU, arc=18 days, H=16.0 ~2.14 km, q=1.272 AU) from CSS (Nov. 21.37-38p3)
K07U06B 2007 UB6 (arc=32 days, H=19.7 ~389m) from the Spacewatch 1.8m telescope (Nov. 20.32-33p3)
K07T25G 2007 TG25 (arc=41 days, H=18.9 ~562m) from MLS (Nov. 18.20-22p4)
K07T18X 2007 TX18 (arc=42 days, H=17.2 ~1.23 km) from MLS (Nov. 20.16-17p4)
K07S06P 2007 SP6 (arc=65 days, H=18.1 ~812m) from MLS (Nov. 18.41-43p4) and ARO (Nov. 25.33-34p3)
K07L32R 2007 LR32 (arc=177 days, H=17.2 ~1.23 km) from CSS (Nov. 18.14-16p4)
J96M00O 1996 MO (arc=3 opp, H=18.4 ~708m) from CSS (Nov. 19.44-47p4)
J96F03G 1996 FG3 (arc=7 opp, H=18.2 ~776m) from MLS (Nov. 21.50-52p4)
E1079 141079 2001 XS30 from Spacewatch 0.9m (Nov. 20.34-37p3)
66251 66251 1999 GJ2 from CSS (Nov. 20.36-38p4)
21374 21374 1997 WS22 from Spacewatch 0.9m (Nov. 20.16-20p3) and CSS (Nov. 20.22-24p4)
16834 16834 1997 WU22 from CSS (Nov. 20.08-10p4)
09400 9400 1994 TW1 from CSS (Nov. 19.51-52p4)
03671 3671 Dionysus (1984 KD) from CSS (Nov. 20.20-21p4)
01620 1620 Geographos (1951 RA) from MLS (Nov. 21.39-40p4)

Observers on 26 November '07

A total of 45 observing facilities appear in today's MPECs.

Code	Observer / observatory
`349`	Ageo Obs. in Japan, 11 in MPECs 2007-W67, 2007-W68, 2007-W71, 2007-W72 & 2007-W74 -- C/2007 U1, P/2007 T6, C/2007 M2, P/2007 H1, C/2007 D1, C/2006 W3, P/2004 F3, 191P, 74P, 65P, 46P
`H55`	Astronomical Research Obs. (ARO) in Illinois, 4 in MPEC 2007-W66 -- 2007 WY3, 2007 WV3, 2007 VB191, 2007 SP6
`J51`	Atlante Obs. in the Canary Islands, 1 in MPEC 2007-W74 -- 17P
`467`	Auckland Obs. in New Zealand, 6 in MPEC 2007-W74 -- P/2007 H1, C/2006 U6, C/2006 K1, 191P, 93P, 46P
`B20`	Carmelita Obs. in Spain, 1 in MPEC 2007-W74 -- 93P
`703`	Catalina Sky Survey (CSS) in Arizona, 10 in MPECs 2007-W66 & 2007-W74 -- 2007 VQ4, 2007 LR32, P/2007 C2, 1996 MO, 66251, 21374, 16834, 9400, 3671, 150P
`B24`	Cesson Obs. in France, 3 in MPEC 2007-W74 -- 93P, 50P, 17P
`H98`	Dark Roseanne Obs. in Connecticut, 1 in MPEC 2007-W66 -- 2007 VE191
`448`	Desert Moon Obs. in New Mexico, 1 in MPEC 2007-W74 -- 17P
`458`	Guadarrama Obs. in Spain, 1 in MPEC 2007-W74 -- 17P
`442`	Gualba Obs. in Spain, 1 in MPEC 2007-W74 -- 29P
`355`	Hadano Obs. in Japan, 10 in MPECs 2007-W70, 2007-W72 & 2007-W74 -- P/2007 V1, C/2007 U1, C/2007 T5, P/2007 H1, C/2006 M1, 191P, 110P, 74P, 50P, 17P
`379`	Hamamatsu-Yuto Obs. in Japan, 2 in MPEC 2007-W74 -- 93P, 17P
`D88`	Hiratsuka Obs., 5 in MPEC 2007-W74 -- C/2006 W3, C/2006 S5, C/2006 K1, 110P, 17P
`585`	Kiev Comet Station in the Ukraine, 5 in MPECs 2007-W69, 2007-W70, 2007-W72 & 2007-W74 -- P/2007 V1, C/2007 U1, C/2007 T5, P/2007 T2, 93P
`704`	LINEAR in New Mexico, 7 in MPECs 2007-W70, 2007-W71 & 2007-W74 -- P/2007 T6, C/2007 T5, C/2006 S5, C/2006 M1, C/2006 K1, 191P, 29P
`699`	LONEOS in Arizona, 2 in MPEC 2007-W66 -- 2007 VT6, 2007 VM184
`J59`	Linceo Obs. in Spain, 1 in MPEC 2007-W74 -- 191P
`130`	Lumezzane Obs. in Italy, 5 in MPECs 2007-W72 & 2007-W74 -- C/2007 U1, P/2007 R4, P/2007 C2, 191P, 136P
`J40`	Malaga Obs. in Spain, 2 in MPEC 2007-W74 -- 117P, 17P
`232`	Masquefa Obs. in Spain, 1 in MPEC 2007-W74 -- 191P
`152`	Moletai Obs. in Lithuania, 1 in MPEC 2007-W74 -- 17P
`J46`	Montana Blanca Obs. in the Canary Islands, 2 in MPEC 2007-W74 -- 93P, 46P
`213`	Montcabre Obs. in Spain, 11 in MPECs 2007-W69, 2007-W72, 2007-W73 & 2007-W74 -- P/2007 V2, C/2007 U1, P/2007 T2, P/2007 R4, C/2006 OF2, 117P, 93P, 50P, 46P, 29P, 17P
`945`	Monte Deva Obs. in Spain, 2 in MPEC 2007-W74 -- 93P, 17P
`900`	Moriyama Obs. in Japan, 11 in MPEC 2007-W74 -- P/2007 H1, C/2006 W3, C/2006 S5, C/2006 M1, 191P, 110P, 93P, 74P, 50P, 29P, 17P
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 9 in MPECs 2007-W66, 2007-W68, 2007-W69 & 2007-W74 -- 2007 VP243, P/2007 V1, 2007 TX18, 2007 TG25, P/2007 T2, 2007 SP6, C/2007 M2, 1996 FG3, 1620
`J47`	Nazaret Obs. in Spain, 1 in MPEC 2007-W74 -- 17P
`H45`	Petit Jean Mtn. South Obs. in Arkansas, 1 in MPEC 2007-W74 -- 17P
`J52`	Pinsoro Obs. in Spain, 14 in MPECs 2007-W71 & 2007-W74 -- P/2007 T6, P/2007 H1, C/2006 W3, C/2006 S5, C/2006 OF2, C/2006 M1, 191P, 117P, 93P, 65P, 50P, 29P, 17P, 8P
`H68`	Red Barn Obs. in Georgia, 1 in MPEC 2007-W74 -- C/2006 S3
`473`	Remanzacco Obs. in Italy, 2 in MPEC 2007-W74 -- P/2007 V1, P/2007 H1
`204`	Schiaparelli Obs. in Italy, 13 in MPECs 2007-W66, 2007-W72, 2007-W73 & 2007-W74 -- 2007 WA, 2007 VL184, 2007 VE138, 2007 VD12, P/2007 V2, P/2007 V1, C/2007 U1, P/2007 R4, C/2006 S3, P/2004 F3, 191P, 117P, 17P
`D21`	Shenton Park Obs. in Western Australia, 1 in MPEC 2007-W66 -- 2007 WA
`510`	Siegen Obs. in Germany, 1 in MPEC 2007-W74 -- 17P
`I05`	Southern TIE (SoTIE) in Chile, 3 in MPEC 2007-W74 -- C/2006 U6, C/2006 OF2, 46P
`691`	Spacewatch 0.9m telescope in Arizona, 3 in MPECs 2007-W66 & 2007-W74 -- C/2006 M1, 21374, 141079
`291`	Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2007-W66 -- 2007 UB6
`673`	Table Mtn. Obs. in southern California, 1 in MPEC 2007-W74 -- 150P
`D70`	Tosa Obs., 2 in MPEC 2007-W74 -- 17P, 8P
`049`	Uppsala Obs. in Sweden, 1 in MPEC 2007-W74 -- 17P
`B51`	Vallauris Obs. in France, 1 in MPEC 2007-W74 -- 17P
`J70`	Vega del Thader Obs. in Spain, 3 in MPEC 2007-W74 -- C/2006 S5, 93P, 29P
`H47`	Vicksburg Obs. in Mississippi, 3 in MPEC 2007-W74 -- C/2006 OF2, 93P, 50P
`D89`	Yamagata Obs., 1 in MPEC 2007-W74 -- 93P

Impact Risk Monitoring on 26 November '07

**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.
Note that the time horizon for JPL is 100 years from today and for NEODyS is now 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

2007 WY3	JPL Sentry	1523	2065-2106	14	1.4e-08	-4.52	-4.86	0	JPL: "Analysis based on 25 observations spanning 6.9246 days (2007-Nov-18.44048 to 2007-Nov-25.365113)." Diameter approximately 0.787 km. from mean, weighted H=18.2.
2007 WY3	NEODyS	1408	2065-2090	7	3.77e-09	-5.03	-5.49	0	NEODyS: "Based on 25 optical observations (of which 0 are rejected as outliers) from 2007/11/18.441 to 2007/11/25.366."

2007 VE191	JPL Sentry	1407	2015	1	6.8e-06	-3.64	-3.64	0	JPL: "Analysis based on 48 observations spanning 10.701 days (2007-Nov-15.26603 to 2007-Nov-25.96729)." Diameter approximately 0.059 km. from mean, weighted H=23.8.
2007 VE191	NEODyS	1407	2015	1	7.92e-06	-3.58	-3.58	0	NEODyS: "Based on 48 optical observations (of which 0 are rejected as outliers) from 2007/11/15.267 to 2007/11/25.968."

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 26 November '07

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

1719	Grabbed MPEC 2007-W67 - Comet C/2007 D1 (LINEAR) - see above Grabbed MPEC 2007-W68 - Comet C/2007 M2 (Catalina) - see above Grabbed MPEC 2007-W69 - Comet P/2007 T2 (Kowalski) - see above Grabbed MPEC 2007-W70 - Comet C/2007 T5 (Gibbs) - see above Grabbed MPEC 2007-W71 - Comet P/2007 T6 (Catalina) - see above Grabbed MPEC 2007-W72 - Comet C/2007 U1 (LINEAR) - see above Grabbed MPEC 2007-W73 - Comet P/2007 V2 (Hill) - see above Grabbed MPEC 2007-W74 - Observations of Comets - see above
1523	Noted that JPL Sentry has updated its 2007 WY3 risk assessment - see above
1408	Noted that NEODyS has updated its 2007 WY3 risk assessment - see above
1407	Noted that JPL Sentry has updated its 2007 VE191 risk assessment - see above Noted that NEODyS has updated its 2007 VE191 risk assessment - see above Grabbed MPEC 2007-W66 - Daily Orbit Update - see above

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