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Contents  on 22 October '07

• IAU Minor Planet Center
  • NEOCP Activity -- seven listings: 1 new, 6 updated
  • New MPECs -- nine MPECs
  • Observers -- 26 observing facilities
• Impact Risk Monitoring -- four objects reported
• Chronology

Resources:

• Consolidated Risk Tables - CRT page
• Old & new CRT Archive
• Ephemerides for risk-rated objects
• Old News Archive & Small Objects Archive

Note: Marching toward complete automation, we inaugurated on October 18th an  RSS news feed that is generated from the same scripts used to produce these daily news pages, replacing previously manual RSS creation. This provides faster and more complex (and surer) linking to both the related A/CC news items and, when available, now also to the original documents. And so this means not only an RSS news feed for A/CC reporting but also for MPECs and active risk assessments. Additionally, this change allows providing an alternate RSS feed for the copy of the daily news published on A/CC's backup Web site.

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.

<<   Top | Contents | NEOCP | MPECs | Observers | Risks | Chronology | Index   >>

NEOCP Activity  on 22 October '07

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

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

<<   Top | Contents | NEOCP | MPECs | Observers | Risks | Chronology | Index   >>

New MPECs  on 22 October '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-U46 time-stamped "06:11 UT" - Daily Orbit Update - see below
• MPEC 2007-U47 time-stamped "14:14 UT" - 2007 UB6 - see below
• MPEC 2007-U48 time-stamped "14:19 UT" - 2007 UC6 - see below
• MPEC 2007-U49 time-stamped "14:23 UT" - 2007 UD6 - see below
• MPEC 2007-U50 time-stamped "14:29 UT" - 2007 UE6 - see below
• MPEC 2007-U51 time-stamped "14:32 UT" - 2007 UF6 - see below
• MPEC 2007-U52 time-stamped "14:34 UT" - 2007 UG6 - see below
• MPEC 2007-U53 time-stamped "15:29 UT" - Comet C/2007 U1 (LINEAR) - see below
• MPEC 2007-U54 time-stamped "19:33 UT" - Comet C/2007 T5 (Gibbs)

MPEC 2007-U54 - "19:33 UT" - Comet C/2007 T5 (Gibbs)

• CK07T050   C/2007 T5 (i=45.4°, q=4.139 AU, TP=2008 May 11.677 TT) from Schiaparelli Obs. (Oct. 16.13p1 & 22.14p1), Kiev Comet Station (Oct. 17.07-09p5), and Australian Natl. Univ. 1m telescope (Oct. 22.74-75p2)

MPEC 2007-U53 - "15:29 UT" - Comet C/2007 U1 (LINEAR)

• CK07U010   C/2007 U1 (i=157.8°, q=3.310 AU, TP=2008 Aug. 7.291 TT) from LINEAR (Oct. 19.41-45p5, 20.42-46p3 & 21.42-47p4), Astronomical Research Obs. (ARO) (Oct. 20.39-41p4), ANU 1m (Oct. 20.76-77p2 & 21.76-77p5), Remanzacco Obs. (Oct. 21.06-10p3), Schiaparelli Obs. (Oct. 21.11p1, 22.13p1 & 22.18p1), Libbiano Obs. (Oct. 21.11-15p2), Cordell-Lorenz Obs. (Oct. 21.38-42p3), Junk Bond Obs. (Oct. 21.46-50p3), and Lindenberg Obs. (Oct. 22.08-09p4)

MPEC 2007-U52 - "14:34 UT" - 2007 UG6

• K07U06G   2007 UG6 (small asteroid, H=22.9 ~89m) was discovered at 0741 UT on 21 Oct. by the Catalina Sky Survey (CSS), which observed it at Oct. 21.32-42p8. The discovery was confirmed by Saint-Barthelemy Obs. (Oct. 21.79-81p4), Gnosca Obs. (Oct. 21.83-84p2), and Schiaparelli Obs. (Oct. 21.94-95p3).

MPEC 2007-U51 - "14:32 UT" - 2007 UF6

• K07U06F   2007 UF6 (small asteroid, Earth MOID=6.2 LD, H=25.7 ~25m) was discovered at 0610 UT on 21 Oct. by the Mt. Lemmon Survey (MLS), which observed it at Oct. 21.26-36p11 and 22.21p4. This object will be coming within ten lunar distances (LD) of Earth, reaching 7.5 LD on 27 Oct.

MPEC 2007-U50 - "14:29 UT" - 2007 UE6

• K07U06E   2007 UE6 (small asteroid, Earth MOID=8.8 LD, H=24.0 ~54m) was discovered at 0829 UT on 20 Oct. by the MLS, which observed it at Oct. 20.35-37p4, 20.41-47p8, and 21.34-36p4.

MPEC 2007-U49 - "14:23 UT" - 2007 UD6

• K07U06D   2007 UD6 (risk-listed, Earth MOID=0.3 LD, H=28.3 ~7m) was discovered at 0705 UT on 20 Oct. by the CSS, which observed it at Oct. 20.30-32p4 and 20.48p4. The discovery was confirmed by Grasslands Obs. (Oct. 20.35p3), ARO (Oct. 20.36-37p3), Farpoint Obs. (Oct. 20.38p3), Farra d'Isonzo Obs. (Oct. 20.79p2), Guidestar Obs. (Oct. 20.80-82p3), Remanzacco Obs. (Oct. 20.82p2), Gnosca Obs. (Oct. 20.84p2 & 21.86-87p2), Schiaparelli Obs. (Oct. 20.92-93p5), and McCarthy Obs. (Oct. 21.07-11p3). This object is now within ten lunar distances (LD) of Earth, reaching 0.6 LD on 19 Oct. (INTRUDER).

MPEC 2007-U48 - "14:19 UT" - 2007 UC6

• K07U06C   2007 UC6 (small asteroid, Earth MOID=5.3 LD, H=23.2 ~78m) was discovered at 0245 UT on 20 Oct. by the MLS, which observed it at Oct. 20.12-13p4, 20.17-19p4, 20.24-26p4, and 21.09-12p8. The discovery was confirmed by ARO (Oct. 20.27-28p3) and Grasslands Obs. (Oct. 20.29p3).

MPEC 2007-U47 - "14:14 UT" - 2007 UB6

• K07U06B   2007 UB6 (H=20.7 ~245m) was discovered at 0714 UT on 19 Oct. by LINEAR, which observed it at Oct. 19.30-34p5 and 20.38-41p4. The discovery was confirmed by Grasslands Obs. (Oct. 20.34p3) and Junk Bond Obs. (Oct. 20.39-46p4 & 21.32-44p6).

<< DOU on 22 Oct. '07 >>  MPEC 2007-U46 - "06:11 UT" - Daily Orbit Update

• Observations of risk-listed objects
• K07T72H   2007 TH72 (small asteroid, arc=5 days, H=24.4 ~45m) from ARO (Oct. 20.28-29p2)
• K07T71D   2007 TD71 (i=49.6°, arc=8 days, H=18.4 ~708m) from the Siding Spring Survey (SSS) (Oct. 20.68p1 & 21.66p1)
• Observations of recently (no longer) risk-listed objects
• K07U00H   2007 UH (small asteroid, arc=5 days, H=22.1 ~129m) from ARO (Oct. 20.31p3) and Desert Moon Obs. (Oct. 21.27-30p3)
• K07T68U   2007 TU68 (small asteroid, arc=7 days, H=25.7 ~25m) from ARO (Oct. 20.36-37p3)
• K07T66E   2007 TE66 (arc=8 days, H=21.1 ~204m) from ARO (Oct. 20.33p3)
• K07T24Y   2007 TY24 (small asteroid, arc=9 days, H=25.3 ~29m) from ARO (Oct. 20.38-39p3)
• K07T18X   2007 TX18 (arc=12 days, H=17.4 ~1.12 km) from Petit Jean Mtn. South Obs. (PJMSO) (Oct. 21.39-40p6)
• Observations of small asteroids (H>22.0)
• K07U03U   2007 UU3 (arc=2 days, H=23.7 ~62m) from Tiki Obs. (Oct. 21.59-61p2)
• K07T68V   2007 TV68 (Q=4.075 AU, arc=7 days, H=23.0 ~85m) from ARO (Oct. 20.32p3)
• Observations of other objects
• K07U01X   2007 UX1 (arc=4 days, H=20.4 ~282m) from PJMSO (Oct. 21.42p5)
• K07T74O   2007 TO74 (arc=5 days, H=19.7 ~389m) from ARO (Oct. 20.30p3)
• K07T65R   2007 TR65 (i=43.5°, arc=9 days, H=18.9 ~562m) from Desert Moon Obs. (Oct. 21.16-17p3)
• K07T25G   2007 TG25 (arc=13 days, H=19.0 ~537m) from Desert Moon Obs. (Oct. 21.24-25p2)
• K07T24V   2007 TV24 (arc=10 days, H=17.8 ~933m) from ARO (Oct. 20.34p3) and Desert Moon Obs. (Oct. 21.32-34p3)
• K07T19S   2007 TS19 (arc=11 days, H=20.7 ~245m) from MLS (Oct. 21.11-13p4), LINEAR (Oct. 21.13-18p5), and PJMSO (Oct. 21.24-25p8)
• K07T19A   2007 TA19 (arc=11 days, H=19.6 ~407m) from SSS (Oct. 20.47p2)
• K07T18Z   2007 TZ18 (arc=11 days, H=21.0 ~214m) from ARO (Oct. 20.37-38p3)
• K07T15G   2007 TG15 (arc=12 days, H=19.7 ~389m) from New Millennium Obs. (Oct. 15.94-01p7)
• K07T08K   2007 TK8 (arc=14 days, H=21.1 ~204m) from Desert Moon Obs. (Oct. 21.19-21p3)
• K07T08G   2007 TG8 (Q=4.307 AU, arc=36 days, H=18.8 ~589m) from New Millennium Obs. (Oct. 15.93-00p7)
• K07S01R   2007 SR1 (arc=33 days, H=19.6 ~407m) from MLS (Oct. 21.11-13p4)
• K07R19T   2007 RT19 (arc=2 opp, H=18.4 ~708m) from PJMSO (Oct. 21.35-36p6)
• K07R12U   2007 RU12 (arc=39 days, H=19.9 ~355m) from PJMSO (Oct. 21.38-39p6)
• K07R09A   2007 RA9 (Q=4.127 AU, arc=41 days, H=19.8 ~371m) from SSS (Oct. 20.65p1)
• K07R05F   2007 RF5 (arc=46 days, H=18.4 ~708m) from New Millennium Obs. (Oct. 15.95-01p10), LINEAR (Oct. 21.20-22p3), and PJMSO (Oct. 21.27-28p6)
• K07P11U   2007 PU11 (Q=4.384 AU, arc=3 opp, H=16.3 ~1.86 km) from Tradate Obs. (Oct. 10.88-91p2), New Millennium Obs. (Oct. 16.03-06p6), Purple Mtn. Obs. XuYi Station (Oct. 20.64-69p4), LINEAR (Oct. 21.33-35p3), PJMSO (Oct. 21.34-35p6), and Lindenberg Obs. (Oct. 22.04p3)
• K07L32R   2007 LR32 (arc=149 days, H=17.2 ~1.23 km) from New Millennium Obs. (Oct. 15.93-00p10) and PJMSO (Oct. 21.21-22p6)
• K07G03S   2007 GS3 (arc=2 opp, H=19.3 ~467m) from Lindenberg Obs. (Oct. 22.06p3)
• K07D41L   2007 DL41 (arc=2 opp, H=20.7 ~245m) from PJMSO (Oct. 21.43-44p6)
• K05S00G   2005 SG (arc=4 opp, H=19.0 ~537m) from PJMSO (Oct. 21.40-41p5) and Lindenberg Obs. (Oct. 22.05p3)
• K02U31A   2002 UA31 (arc=4 opp, H=19.0 ~537m) from PJMSO (Oct. 21.23-24p5)
• K02U03R   2002 UR3 (i=48.6°, q=0.285 AU, arc=5 opp, H=16.4 ~1.78 km) from New Millennium Obs. (Oct. 16.11-15p4)
• K02RB8C   2002 RC118 (Q=4.624 AU, arc=2 opp, H=16.7 ~1.55 km) from New Millennium Obs. (Oct. 16.03-06p6), LINEAR (Oct. 21.26-30p4), PJMSO (Oct. 21.32-33p6), and Lindenberg Obs. (Oct. 22.04p3)
• K01R47Y   2001 RY47 (arc=3 opp, H=19.5 ~426m) from New Millennium Obs. (Oct. 15.93-00p10) and PJMSO (Oct. 21.23p5)
• J97E30T   1997 ET30 (arc=8 opp, H=16.9 ~1.41 km) from MLS (Oct. 21.38-46p12)
• G2723   162723 2000 VM2 from MLS (Oct. 21.18-19p4)
• G2215   162215 1999 TL12 from Desert Moon Obs. (Oct. 21.36-37p3)
• G2004   162004 1991 VE from LINEAR (Oct. 21.37-42p5)
• F2787   152787 1999 TB10 from New Millennium Obs. (Oct. 15.94-01p7) and PJMSO (Oct. 21.29-30p3)
• E3678   143678 2003 SA224 from New Millennium Obs. (Oct. 16.04-07p6)
• A5140   105140 2000 NL10 from LINEAR (Oct. 21.08-13p5)
• 85770   85770 1998 UP1 from New Millennium Obs. (Oct. 16.04-06p4)
• 66959   66959 1999 XO35 from SSS (Oct. 21.42-44p4)
• 66251   66251 1999 GJ2 from LINEAR (Oct. 20.37-42p5)
• 22771   22771 1999 CU3 from New Millennium Obs. (Oct. 16.04-07p6)
• 20826   20826 2000 UV13 from New Millennium Obs. (Oct. 15.96-02p6)
• 18736   18736 1998 NU from MLS (Oct. 21.38-40p4)
• 11500   11500 1989 UR from Purple Mtn. Obs. XuYi Station (Oct. 20.70-74p8)
• 07889   7889 1994 LX from SSS (Oct. 21.73-76p4)
• 03553   3553 Mera (1985 JA) from New Millennium Obs. (Oct. 16.09-14p5)
• 02212   2212 Hephaistos (1978 SB) from New Millennium Obs. (Oct. 16.03-06p6), LINEAR (Oct. 21.26-30p4), and PJMSO (Oct. 21.32p5)
• 01865   1865 Cerberus (1971 UA) from LINEAR (Oct. 21.39-42p3)

<<   Top | Contents | NEOCP | MPECs | Observers | Risks | Chronology | Index   >>

Observers  on 22 October '07

A total of 26 observing facilities appear in today's MPECs.

<<   Top | Contents | NEOCP | MPECs | Observers | Risks | Chronology | Index   >>

Impact Risk Monitoring  on 22 October '07

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.

<<   Top | Contents | NEOCP | MPECs | Observers | Risks | Chronology | Index   >>

Chronology  on 22 October '07

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