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Contents  on 23 September '07

• IAU Minor Planet Center
  • NEOCP Activity -- three listings: 1 new, 2 updated
  • New MPECs -- five MPECs
  • Observers -- 20 observing facilities
• Impact Risk Monitoring -- one object reported
• Chronology

Resources:

• Consolidated Risk Tables - CRT page
• Ephemerides for risk-rated objects

Notes: Due to travel, these pages will update irregularly for the rest of the month.
Until September 16th this daily news page, which had included links to news and science papers as well as some occasional original reporting, was called Major News About Minor Objects. Without the news-link and science-link sections, this page was renamed as The Tracking News to more more accurately reflect its continuing purpose.

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.

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 23 September '07

The MPC's NEO Confirmation Page has 3 listings: 1 new, 2 updated

When last checked at 2130 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and two updated listings. Of these, two were "one nighters." So far Tracking News has counted a total of nine 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 23 September '07

Minor Planet Electronic Circulars

As of last check at 2130 UTC, there have been five MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

• MPEC 2007-S41 time-stamped "06:11 UT" - Daily Orbit Update - see below
• MPEC 2007-S42 time-stamped "19:16 UT" - 2007 SN6 - see below
• MPEC 2007-S43 time-stamped "19:20 UT" - 2007 SO6 - see below
• MPEC 2007-S44 time-stamped "19:25 UT" - 2007 SP6 - see below
• MPEC 2007-S45 time-stamped "19:29 UT" - 2007 SQ6

MPEC 2007-S45 - "19:29 UT" - 2007 SQ6

• K07S06Q   2007 SQ6 (Earth MOID=4.2 LD, H=21.6 ~162m) was discovered at 0427 UT 22 Sept. by LINEAR, which observed it at Sept. 22.19-22p4. The discovery was confirmed by Great Shefford Obs. (Sept. 22.86-87p3), Schiaparelli Obs. (Sept. 22.91p2), Alter Satzberg Obs. (Sept. 22.95-98p5), Farpoint Obs. (Sept. 23.15-16p2), Astronomical Research Obs. (ARO) (Sept. 23.16p3), and Heidelberg-Konigstuhl Obs. (Sept. 23.77-78p3).

MPEC 2007-S44 - "19:25 UT" - 2007 SP6

• K07S06P   2007 SP6 (H=17.9 ~891m) was discovered at 1151 UT 21 Sept. by the Catalina Sky Survey (CSS), which observed it at Sept. 21.49-51p4. The discovery was confirmed by the Siding Spring Survey (SSS) (Sept. 21.62-63p2), CEAMIG-REA (Sept. 22.32p3), E. Guido via RAS Obs. Mayhill (Sept. 22.40-43p3), ARO (Sept. 22.40-41p3 & 23.39-40p3), Hibiscus Obs. (Sept. 22.48-51p3), Shenton Park Obs. (Sept. 22.85-86p3), Remanzacco Obs. (Sept. 23.06-08p3), Great Shefford Obs. (Sept. 23.11p3), and Farpoint Obs. (Sept. 23.40-41p5).

MPEC 2007-S43 - "19:20 UT" - 2007 SO6

• K07S06O   2007 SO6 (small asteroid, H=25.2 ~31m) was discovered at 0647 UT 21 Sept. by LINEAR, which observed it at Sept. 21.28-33p5. The discovery was confirmed by Hibiscus Obs. (Sept. 22.44-46p5), Schiaparelli Obs. (Sept. 22.94-95p3), Remanzacco Obs. (Sept. 23.02-03p3), Great Shefford Obs. (Sept. 23.06-08p3), ARO (Sept. 23.26p3 & 23.32-33p3), and Farpoint Obs. (Sept. 23.37-38p3).

MPEC 2007-S42 - "19:16 UT" - 2007 SN6

• K07S06N   2007 SN6 (small asteroid, Q=4.012 AU, Earth MOID=1.8 LD, H=25.1 ~32m) was discovered at 0656 UT 19 Sept. by LINEAR, which observed it at Sept. 19.29-32p4 and 21.40-44p4. The discovery was confirmed by Great Shefford Obs. (Sept. 22.92-95p2), Schiaparelli Obs. (Sept. 22.93-97p2), and Farpoint Obs. (Sept. 23.32-36p3).

<< DOU on 23 Sept. '07 >>  MPEC 2007-S41 - "06:11 UT" - Daily Orbit Update

• Observations of risk-listed objects
• K07S00J   2007 SJ (arc=6 days, H=16.3 ~1.86 km) from Desert Moon Obs. (Sept. 22.14-16p3) and Great Shefford Obs. (Sept. 22.90-94p2)
• Observations of small asteroids (H>22.0)
• K07S01U   2007 SU1 (arc=2 days, H=25.3 ~29m) from ARO (Sept. 21.11-12p3)
• K07R19W   2007 RW19 (arc=9 days, H=24.7 ~39m) from Great Shefford Obs. (Sept. 23.03-04p3)
• K07R01H   2007 RH1 (arc=19 days, H=22.6 ~102m) from Desert Moon Obs. (Sept. 22.18-22p3)
• Observations of other objects
• K07S01R   2007 SR1 (arc=2 days, H=19.3 ~467m) from Schiaparelli Obs. (Sept. 19.97p1 & 20.02p1)
• K07RD3L   2007 RL133 (arc=8 days, H=20.2 ~309m) from Desert Moon Obs. (Sept. 22.25-27p2)
• K07R20D   2007 RD20 (arc=8 days, H=21.1 ~204m) from Desert Moon Obs. (Sept. 22.40-41p3) and ARO (Sept. 22.43-44p3)
• K07R19T   2007 RT19 (arc=8 days, H=18.2 ~776m) from Desert Moon Obs. (Sept. 22.35-38p3)
• K07R12U   2007 RU12 (arc=10 days, H=19.6 ~407m) from Desert Moon Obs. (Sept. 22.31-33p3) and ARO (Sept. 22.42-43p3)
• K07R12R   2007 RR12 (arc=10 days, H=19.9 ~355m) from Altenburg Obs. (Sept. 21.98-00p5)
• K07R10U   2007 RU10 (arc=11 days, H=18.9 ~562m) from Desert Moon Obs. (Sept. 22.09-12p3)
• K07P11U   2007 PU11 (Q=4.384 AU, arc=3 opp, H=16.3 ~1.86 km) from Homburg-Erbach Obs. (Sept. 21.98-01p2) and Hamamatsu-Yuto Obs. (Sept. 22.55p1 & 22.70-72p5)
• K07P09P   2007 PP9 (arc=42 days, H=21.3 ~186m) from ARO (Sept. 22.42-43p3)
• K07P08E   2007 PE8 (arc=129 days, H=19.4 ~446m) from New Millennium Obs. (Sept. 11.86-88p3 & 11.93p2)
• K07O00V   2007 OV (arc=68 days, H=19.2 ~490m) from LINEAR (Sept. 22.29-33p5)
• K07L32R   2007 LR32 (arc=119 days, H=17.2 ~1.23 km) from New Millennium Obs. (Sept. 11.87-89p3 & 11.94-95p2) and Homburg-Erbach Obs. (Sept. 21.87-93p3)
• K02S00V   2002 SV (arc=2 opp, H=19.8 ~371m) from Dresden Obs. (Sept. 22.83-85p3)
• K02RC9T   2002 RT129 (arc=2 opp, H=19.5 ~426m) from LINEAR (Sept. 22.36-39p4)
• J98S15D   1998 SD15 (arc=4 opp, H=19.2 ~490m) from Homburg-Erbach Obs. (Sept. 21.81-88p3), Hamamatsu-Yuto Obs. (Sept. 22.50-51p3), and Dresden Obs. (Sept. 22.80-82p5)
• F4278   154278 2002 TB9 from LINEAR (Sept. 22.35-39p4)
• 68359   68359 2001 OZ13 from Desert Moon Obs. (Sept. 22.44-47p3)
• 16636   16636 1993 QP from Homburg-Erbach Obs. (Sept. 21.82p1)
• 03200   3200 Phaethon (1983 TB) from LINEAR (Sept. 22.44-47p3)

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Observers  on 23 September '07

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

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Impact Risk Monitoring  on 23 September '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 an 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" for more about this.

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Chronology  on 23 September '07

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