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Contents  on 5 December '07

• IAU Minor Planet Center
  • NEOCP Activity -- 13 listings: 6 new, 7 updated
  • New MPECs -- six MPECs
  • Observers -- 20 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.

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

NEOCP Activity  on 5 December '07

The MPC's NEO Confirmation Page has 13 listings: 6 new, 7 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had six new and seven updated listings. Of these, ten were "one nighters." So far The Tracking News has counted a total of 36 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 5 December '07

Minor Planet Electronic Circulars

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

• MPEC 2007-X19 time-stamped "07:10 UT" - Daily Orbit Update - see below
• MPEC 2007-X20 time-stamped "20:39 UT" - 2007 XN3 - see below
• MPEC 2007-X21 time-stamped "20:48 UT" - 2007 XO3 - see below
• MPEC 2007-X22 time-stamped "21:42 UT" - 2007 XP3 - see below
• MPEC 2007-X23 time-stamped "21:46 UT" - 2007 XQ3 - see below
• MPEC 2007-X24 time-stamped "23:18 UT" - 2007 XT3

MPEC 2007-X24 - "23:18 UT" - 2007 XT3

• K07X03T   2007 XT3 (H=21.1 ~204m) was discovered at 0530 UT on 5 Dec. by the Catalina Sky Survey (CSS), which observed it at Dec. 5.23-31p7 and 5.40-41p4. The discovery was confirmed by San Marcello Pistoiese Obs. (Dec. 5.87-88p3) and Remanzacco Obs. (Dec. 5.91-93p3).

MPEC 2007-X23 - "21:46 UT" - 2007 XQ3

• K07X03Q   2007 XQ3 (H=21.4 ~178m) was discovered at 1042 UT on 4 Dec. by the Spacewatch 0.9m telescope, which observed it at Dec. 4.45-48p3. The discovery was confirmed by the Spacewatch 1.8m telescope (Dec. 5.28p3).

MPEC 2007-X22 - "21:42 UT" - 2007 XP3

• K07X03P   2007 XP3 (q=0.265 AU, Q=4.713 AU, H=18.8 ~589m) was discovered at 0910 UT on 4 Dec. by LINEAR, which observed it at Dec. 4.38-42p4. The discovery was confirmed by Spacewatch 1.8m (Dec. 5.31-32p2).

MPEC 2007-X21 - "20:48 UT" - 2007 XO3

• K07X03O   2007 XO3 (small asteroid, H=22.8 ~93m) was discovered at 0847 UT on 4 Dec. by the CSS, which observed it at Dec. 4.37-39p4, 4.45p4, and 5.40p4. The discovery was confirmed by the Mt. Lemmon Survey (MLS) (Dec. 5.39-41p4).

MPEC 2007-X20 - "20:39 UT" - 2007 XN3

• K07X03N   2007 XN3 (Q=4.490 AU, H=20.3 ~295m) was discovered at 0455 UT on 3 Dec. by LINEAR, which observed it at Dec. 3.20-24p4. The discovery was confirmed by Gnosca Obs. (Dec. 4.86-87p2) and Spacewatch 1.8m (Dec. 5.13p2).

<< DOU on 5 Dec. '07 >>  MPEC 2007-X19 - "07:10 UT" - Daily Orbit Update

• Observations of risk-listed objects
• K07W03Y   2007 WY3 (Q=4.928 AU, arc=16 days, H=18.2 ~776m) from Spacewatch 1.8m (Dec. 4.36-37p3) and Spacewatch 0.9m (Dec. 4.50-53p3)
• K07W03P   2007 WP3 (small asteroid, arc=15 days, H=23.5 ~68m) from Spacewatch 1.8m (Dec. 4.19p3)
• K07VI4K   2007 VK184 (almost small, arc=23 days, H=22.0 ~135m) from Spacewatch 1.8m (Dec. 5.07-08p3)
• Observations of recently (no longer) risk-listed objects
• K07W04V   2007 WV4 (i=38.3°, arc=15 days, H=19.1 ~513m) from LINEAR (Dec. 4.26-31p5), Desert Moon Obs. (Dec. 4.29-31p3), and CSS (Dec. 4.34-36p3)
• K07VO3P   2007 VP243 (arc=16 days, H=21.4 ~178m) from Astronomical Research Obs. (ARO) (Dec. 1.11-15p3 at V=22.1-2)
• K07VI9G   2007 VG189 (arc=21 days, H=19.2 ~490m) from ARO (Dec. 1.26-27p3) and MLS (Dec. 4.32-34p4)
• K07VD7W   2007 VW137 (arc=26 days, H=18.1 ~812m) from Petit Jean Mtn. South Obs. (PJMSO) (Dec. 4.11-12p6)
• K07V03H   2007 VH3 (small asteroid, arc=32 days, H=22.4 ~112m) from Desert Moon Obs. (Dec. 4.23-27p3)
• K07T24U   2007 TU24 (arc=54 days, H=20.1 ~323m) from Spacewatch 1.8m (Dec. 4.11p1)
• Observations of small asteroids (H>22.0)
• K07W05D   2007 WD5 (Q=4.181 AU, arc=15 days, H=24.3 ~47m) from Spacewatch 1.8m (Dec. 5.23p3)
• K07W04T   2007 WT4 (arc=15 days, H=22.5 ~107m) from Spacewatch 1.8m (Dec. 4.31-32p3)
• K07V03B   2007 VB3 (arc=32 days, H=25.1 ~32m) from Spacewatch 1.8m (Dec. 4.24-25p2)
• K07U06P   2007 UP6 (arc=40 days, H=23.1 ~81m) from ARO (Dec. 1.09-11p3)
• Observations of almost-small asteroids (21.7<H<=22.0)
• K07VI4H   2007 VH184 (Q=4.090 AU, arc=23 days, H=21.9 ~141m) from Desert Moon Obs. (Dec. 4.18-20p3)
• K07V03K   2007 VK3 (arc=29 days, H=21.9 ~141m) from ARO (Dec. 1.08p2)
• Observations of other objects
• K07X00N   2007 XN (arc=1 day, H=19.8 ~371m) from LINEAR (Dec. 4.45-50p5) and MLS (Dec. 4.50-51p4)
• K07W55F   2007 WF55 (arc=5 days, H=19.0 ~537m) from New Millennium Obs. (Dec. 3.95p2)
• K07W04U   2007 WU4 (arc=15 days, H=18.9 ~562m) from Spacewatch 1.8m (Dec. 4.33-34p2)
• K07V06T   2007 VT6 (arc=31 days, H=20.3 ~295m) from Desert Moon Obs. (Dec. 4.15-16p3)
• K07V04Q   2007 VQ4 (arc=31 days, H=16.0 ~2.14 km, q=1.271 AU) from PJMSO (Dec. 4.47p7)
• K07U13Q   2007 UQ13 (arc=35 days, H=19.7 ~389m) from Spacewatch 1.8m (Dec. 4.23-24p3)
• K07U12M   2007 UM12 (arc=40 days, H=21.6 ~162m) from Jornada Obs. (Dec. 5.08-11p3)
• K07U03R   2007 UR3 (arc=53 days, H=21.3 ~186m) from ARO (Dec. 1.12-14p3)
• K07U01X   2007 UX1 (arc=48 days, H=20.5 ~269m) from MLS (Dec. 4.31-33p4)
• K07S06P   2007 SP6 (arc=74 days, H=18.2 ~776m) from PJMSO (Dec. 4.44-45p7)
• K07S00J   2007 SJ (arc=2 opp, H=16.5 ~1.70 km) from Desert Moon Obs. (Dec. 4.07p1 & 4.11p1)
• K07R12U   2007 RU12 (arc=83 days, H=20.0 ~339m) from Spacewatch 0.9m (Dec. 4.07-10p3), PJMSO (Dec. 4.12-13p6), and CSS (Dec. 4.19-20p4)
• K07O03G   2007 OG3 (arc=138 days, H=18.4 ~708m) from ARO (Sept. 18.40-41p3 & Dec. 4.33-34p3), Spacewatch 0.9m (Dec. 3.31-35p3), Jim Young via Table Mtn. Obs. (Dec. 3.40-42p4), Farpoint Obs. (Dec. 3.44-45p3), Cordell-Lorenz Obs. (Dec. 4.34-39p4), and Spacewatch 1.8m (Dec. 4.34-35p3)
• K07L19Q   2007 LQ19 (Q=4.247 AU, arc=171 days, H=17.4 ~1.12 km) from ARO (Dec. 1.30p3)
• K05Y55W   2005 YW55 (arc=4 opp, H=19.4 ~446m) from LINEAR (Dec. 4.25-30p5)
• K05T45U   2005 TU45 (arc=3 opp, H=16.9 ~1.41 km) from PJMSO (Dec. 4.48-49p5)
• K04X35K   2004 XK35 (arc=2 opp, H=18.1 ~812m) from Spacewatch 1.8m (Dec. 4.38-41p9)
• K04V64A   2004 VA64 (q=0.268 AU, Q=4.658 AU, arc=3 opp, H=17.2 ~1.23 km) from Spacewatch 1.8m (Dec. 4.41-42p3)
• K02X04Y   2002 XY4 (i=43.1°, arc=3 opp, H=19.1 ~513m) from PJMSO (Dec. 4.46p5)
• K00C59H   2000 CH59 (arc=3 opp, H=19.6 ~407m) from Desert Moon Obs. (Dec. 4.48-50p2)
• J96A01J   1996 AJ1 (q=0.286 AU, arc=3 opp, H=20.1 ~323m) from Spacewatch 1.8m (Dec. 4.53-54p3)
• J93T02Q   1993 TQ2 (arc=2 opp, H=20.1 ~323m) from New Millennium Obs. (Dec. 3.89-94p6)
• H0903   170903 2004 WS2 from New Millennium Obs. (Dec. 3.88-93p6) and LINEAR (Dec. 4.26-31p5)
• H0891   170891 2004 TY16 from New Millennium Obs. (Dec. 4.00p2)
• G2273   162273 1999 VL12 from LINEAR (Dec. 4.19-24p5)
• G2142   162142 1998 VR from Green Island Obs. (Dec. 3.68p1, 3.73p1 & 3.79p1)
• F4589   154589 2003 MX2 from Desert Moon Obs. (Dec. 4.33-36p2)
• E3404   143404 2003 BD44 from Spacewatch 0.9m (Dec. 4.39-43p3)
• 90403   90403 2003 YE45 from PJMSO (Dec. 4.48p5)
• 85804   85804 1998 WQ5 from Malaga Obs. (Dec. 2.90-91p3) and New Millennium Obs. (Dec. 3.86-88p3)
• 68359   68359 2001 OZ13 from New Millennium Obs. (Dec. 3.96p2)
• 68063   68063 2000 YJ66 from LONEOS (Dec. 4.34-42p4)
• 66272   66272 1999 JW6 from Green Island Obs. (Dec. 3.74-77p3)
• 21374   21374 1997 WS22 from New Millennium Obs. (Dec. 3.86-91p6) and PJMSO (Dec. 4.02p5)
• 18736   18736 1998 NU from New Millennium Obs. (Dec. 3.87-92p6) and LONEOS (Dec. 4.24-31p4)
• 04544   4544 Xanthus (1989 FB) from Montana Blanca Obs. (Dec. 4.83p2)
• 01580   1580 Betulia (1950 KA) from New Millennium Obs. (Dec. 3.88-93p6)

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Observers  on 5 December '07

A total of 20 observing facilities appear in today's MPECs.

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

Impact Risk Monitoring  on 5 December '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.

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Chronology  on 5 December '07

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