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Contents  on 15 January '08

• IAU Minor Planet Center
  • NEOCP Activity -- twelve listings: 3 new, 9 updated
  • New MPECs -- six MPECs
  • Observers -- ten 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 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 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 15 January '08

The MPC's NEO Confirmation Page has 12 listings: 3 new, 9 updated

When last checked at 2355 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had three new and nine updated listings. Of these, six were "one nighters." So far The Tracking News has counted a total of eighteen 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 15 January '08

Minor Planet Electronic Circulars

As of last check at 2355 UTC, there have been six MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

• MPEC 2008-A71 time-stamped "02:56 UT" - Comets C/2007 S11, 2007 U7, 2007 U8, 2007 U9 (SOHO) - see below
• MPEC 2008-A72 time-stamped "03:06 UT" - Comets C/2007 U10, 2007 U11, 2007 U12, 2007 U13 (SOHO) - see below
• MPEC 2008-A73 time-stamped "07:09 UT" - Daily Orbit Update - see below
• MPEC 2008-A74 time-stamped "17:40 UT" - 2008 AF32 - see below
• MPEC 2008-A75 time-stamped "21:48 UT" - Comets C/2007 V3, 2007 V4, 2007 V5, 2007 V6 (SOHO) - see below
• MPEC 2008-A76 time-stamped "21:54 UT" - Comets C/2007 V7, 2007 V8, 2007 V9, 2007 V10 (SOHO)

MPEC 2008-A76 - "21:54 UT" - Comets C/2007 V7, 2007 V8, 2007 V9, 2007 V10 (SOHO)

• CK07V100   C/2007 V10 from the LASCO Coronagraph 2 on the Solar & Heliospheric Obs. (SOHO) (Nov. 9.34-43p14)
• CK07V090   C/2007 V9 from the LASCO Coronagraph 3 on the Solar & Heliospheric Obs. (SOHO) (Nov. 6.20-28p10, 6.36-39p4, 6.47-72p26, 6.82-93p12, 6.97-03p8 & 7.07-14p8) and SOHO C2 (Nov. 7.14-28p22)
• CK07V080   C/2007 V8 from SOHO C2 (Nov. 6.14-25p16)
• CK07V070   C/2007 V7 from SOHO C2 (Nov. 5.67-75p14)

MPEC 2008-A75 - "21:48 UT" - Comets C/2007 V3, 2007 V4, 2007 V5, 2007 V6 (SOHO)

• CK07V060   C/2007 V6 from SOHO C2 (Nov. 4.64-75p18)
• CK07V050   C/2007 V5 from SOHO C2 (Nov. 3.58-64p12)
• CK07V040   C/2007 V4 from SOHO C3 (Nov. 2.47-78p30, 2.82-93p12, 2.97-18p20, 3.22-32p10, 3.36p2, 3.40p2 & 3.45-49p6) and SOHO C2 (Nov. 3.49-63p20)
• CK07V030   C/2007 V3 from SOHO C2 (Nov. 1.55-64p16)

MPEC 2008-A74 - "17:40 UT" - 2008 AF32

• K08A32F   2008 AF32 (H=21.1 ~204m) was discovered at 0807 UT on 13 Jan. by the Catalina Sky Survey (CSS), which observed it at Jan. 13.34-36p4 and 15.23-24p4. The discovery was confirmed by Farpoint Obs. (Jan. 15.41-42p4).

<< DOU on 15 Jan. '08 >>  MPEC 2008-A73 - "07:09 UT" - Daily Orbit Update

• Observations of risk-listed objects
• K08A28S   2008 AS28 (Q=4.002 AU, arc=5 days, H=19.5 ~426m) from the Spacewatch 1.8m telescope (Jan. 14.16-17p4 & 15.20p3)
• K08A04F   2008 AF4 (arc=5 days, H=19.5 ~426m) from Petit Jean Mtn. South Obs. (PJMSO) (Jan. 14.39-40p12), Paus Obs. (Jan. 15.01p2), and the SZTE Asteroid Program (SZTE) (Jan. 15.20p3)
• Observations of recently (no longer) risk-listed objects
• K07Y56M   2007 YM56 (small asteroid, arc=16 days, H=22.2 ~123m) from Spacewatch 1.8m (Jan. 15.16p3)
• K07X25F   2007 XF25 (arc=31 days, H=21.3 ~186m) from Spacewatch 1.8m (Jan. 15.25-26p3)
• K07X11K   2007 XK11 (Q=4.490 AU, arc=39 days, H=19.2 ~490m) from Spacewatch 1.8m (Jan. 14.28-29p3)
• Observations of small asteroids (H>22.0)
• K08A03F   2008 AF3 (arc=5 days, H=26.1 ~20m) from SZTE (Jan. 15.19-20p3)
• Observations of almost-small asteroids (21.7<H<=22.0)
• K07Y56U   2007 YU56 (arc=14 days, H=22.0 ~135m) from Spacewatch 1.8m (Jan. 14.37-38p3)
• Observations of other objects
• K08A01X   2008 AX1 (arc=6 days, H=21.3 ~186m) from Rob McNaught via Australian Natl. Univ. 1m telescope (Jan. 14.46p2)
• K08A01G   2008 AG1 (arc=8 days, H=21.1 ~204m) from the Siding Spring Survey (SSS) (Jan. 14.73-74p2)
• K07X10C   2007 XC10 (i=47.9°, arc=40 days, H=19.4 ~446m) from Spacewatch 1.8m (Jan. 14.14-15p3)
• K07X09Y   2007 XY9 (arc=42 days, H=21.0 ~214m) from Spacewatch 1.8m (Jan. 15.13p3)
• K07W55F   2007 WF55 (arc=44 days, H=19.1 ~513m) from PJMSO (Jan. 14.29-30p5)
• K07VO3P   2007 VP243 (arc=20 days, H=21.4 ~178m) from Spacewatch 1.8m (Dec. 5.15-16p2)
• K07J20Z   2007 JZ20 (i=40.5°, arc=248 days, H=18.4 ~708m) from McNaught/ANU 1m (Jan. 11.70p2 & 14.49p2)
• K05X08K   2005 XK8 (arc=2 opp, H=19.8 ~371m) from PJMSO (Jan. 14.24-25p5)
• K05X01D   2005 XD1 (arc=2 opp, H=19.4 ~446m) from PJMSO (Jan. 14.27p6)
• K05T45U   2005 TU45 (arc=3 opp, H=17.0 ~1.35 km) from PJMSO (Jan. 14.37p5)
• K02X04Y   2002 XY4 (i=43.1°, arc=3 opp, H=19.0 ~537m) from SSS (Jan. 14.56-59p3)
• J93T02Q   1993 TQ2 (arc=2 opp, H=19.9 ~355m) from PJMSO (Jan. 14.33p5)
• F3591   153591 2001 SN263 from PJMSO (Jan. 14.26p5)
• D6793   136793 1997 AQ18 from PJMSO (Jan. 14.30-31p5)
• 90403   90403 2003 YE45 from Dresden Obs. (Jan. 13.89-91p3) and PJMSO (Jan. 14.35p5)
• 68359   68359 2001 OZ13 from PJMSO (Jan. 14.31-32p5)
• 68063   68063 2000 YJ66 from PJMSO (Jan. 14.36-37p5)
• 54686   54686 2001 DU8 from SSS (Jan. 14.63-64p2)
• 05131   5131 1990 BG from PJMSO (Jan. 14.32-33p5)

MPEC 2008-A72 - "03:06 UT" - Comets C/2007 U10, 2007 U11, 2007 U12, 2007 U13 (SOHO)

• CK07U130   C/2007 U13 from SOHO C3 (2007 Oct. 30.76-78p4, 2007 Oct. 30.82-93p12, 2007 Oct. 30.97-99p4 & 2007 Oct. 31.03-15p14) and SOHO C2 (2007 Oct. 31.20-28p14)
• CK07U120   C/2007 U12 from SOHO C3 (2007 Oct. 30.18-40p24, 2007 Oct. 30.45-53p10 & 2007 Oct. 30.57-72p16) and SOHO C2 (2007 Oct. 30.71-78p12)
• CK07U110   C/2007 U11 from SOHO C2 (2007 Oct. 29.06-14p14)
• CK07U100   C/2007 U10 from SOHO C3 (2007 Oct. 28.68-78p12 & 2007 Oct. 28.82-90p10) and SOHO C2 (2007 Oct. 28.98-02p8)

MPEC 2008-A71 - "02:56 UT" - Comets C/2007 S11, 2007 U7, 2007 U8, 2007 U9 (SOHO)

• CK07U090   C/2007 U9 from SOHO C3 (2007 Oct. 28.15-18p4 & 2007 Oct. 28.24-26p4) and SOHO C2 (2007 Oct. 28.33-43p16)
• CK07U080   C/2007 U8 from SOHO C3 (2007 Oct. 27.64-78p16, 2007 Oct. 27.82-93p12, 2007 Oct. 27.97-01p6 & 2007 Oct. 28.07p2) and SOHO C2 (2007 Oct. 28.00-12p16)
• CK07U070   C/2007 U7 from SOHO C2 (2007 Oct. 27.23-31p12)
• CK07S110   C/2007 S11 from SOHO C2 (2007 Sept. 28.60-75p24)

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Observers  on 15 January '08

Ten observing facilities appear in today's MPECs.

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Impact Risk Monitoring  on 15 January '08

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 15 January '08

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