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Contents  on 9 January '10

• IAU Minor Planet Center
  • NEOCP Activity -- five listings: 3 new, 2 updated
  • New MPECs -- ten MPECs
• Observers -- eighteen observing facilities
• Impact Risk Monitoring -- three objects
• Chronology

Resources:

• Consolidated Risk Tables - the CRT page
• Earth's Busy Neighborhood Traffic Report
• Ephemerides for risk-rated and nearby objects
• News image catalog
• 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 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 9 January '10

The MPC's NEO Confirmation Page has 5 listings: 3 new, 2 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new and two updated listings. All of these were "one nighters." So far The Tracking News has counted a total of 20 listings on the NEOCP at some point today.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.

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

New MPECs  on 9 January '10

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been ten MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

• MPEC 2010-A39 time-stamped "07:11 UT" - Daily Orbit Update - see below
• MPEC 2010-A40 time-stamped "17:22 UT" - 2010 AB3 - see below
• MPEC 2010-A41 time-stamped "17:25 UT" - 2010 AC3 - see below
• MPEC 2010-A42 time-stamped "17:28 UT" - 2010 AD3 - see below
• MPEC 2010-A43 time-stamped "17:31 UT" - 2010 AE3 - see below
• MPEC 2010-A44 time-stamped "17:34 UT" - 2010 AF3 - see below
• MPEC 2010-A45 time-stamped "17:37 UT" - 2010 AG3 - see below
• MPEC 2010-A46 time-stamped "17:40 UT" - 2010 AH3 - see below
• MPEC 2010-A47 time-stamped "17:43 UT" - 2010 AJ3 - see below
• MPEC 2010-A48 time-stamped "18:42 UT" - Comet C/2010 A3 (Hill)

MPEC 2010-A48 - "18:42 UT" - Comet C/2010 A3 (Hill)

• CK10A030   C/2010 A3 (Hill) (i=15.1°, q=1.658 AU, TP=2010 Mar. 27.292 TT) from the Catalina Sky Survey (CSS) (Jan. 8.10-11p4), Table Mtn. Obs. (Jan. 8.15-18p4), the Mt. Lemmon Survey (MLS) (Jan. 8.16-17p4), Sabino Canyon Obs. (Jan. 8.26-27p2), Engelhardt Obs. Zelenchukskaya Station (Jan. 8.68-70p5), Raheny Obs. (Jan. 8.79-81p5), Rio Cuarto Obs. (Jan. 9.06-07p3), RAS Obs. Mayhill (Jan. 9.09-10p3 & 9.14-16p2), Magdalena Ridge Obs. (MRO) (Jan. 9.12-15p4), and Ageo Obs. (Jan. 9.51-52p2)

MPEC 2010-A47 - "17:43 UT" - 2010 AJ3

• K10A03J   2010 AJ3 (small asteroid, Earth MOID=4.6 LD, H=24.3 ~47m) was discovered at 1204 UT on 8 Jan. by CSS, which observed it at Jan. 8.50-54p8. The discovery was confirmed by MLS (Jan. 8.55-56p12 & 9.27-30p9), Richard Miles via Faulkes Telescope North (Jan. 8.66-67p5), and MRO (Jan. 9.41-44p4).

MPEC 2010-A46 - "17:40 UT" - 2010 AH3

• K10A03H   2010 AH3 (small asteroid, Earth MOID=2.1 LD, H=26.2 ~19m) was discovered at 1000 UT on 8 Jan. by MLS, which observed it at Jan. 8.42-47p8, 9.25p5, and 9.29-30p4. The discovery was confirmed by MRO (Jan. 9.31-33p4).

MPEC 2010-A45 - "17:37 UT" - 2010 AG3

• K10A03G   2010 AG3 (small asteroid, Earth MOID=5.6 LD, H=27.6 ~10m) was discovered at 0746 UT on 8 Jan. by MLS, which observed it at Jan. 8.32-34p4 at V=20.6-21.6, 8.41p5 at V=20.6-22.1, and 9.24-30p14 at V=20.2-21.1. The discovery was confirmed by MRO (Jan. 9.27-30p4). This object will be coming within ten lunar distances (LD) of Earth, reaching 8.9 LD on 19 Jan.

MPEC 2010-A44 - "17:34 UT" - 2010 AF3

• K10A03F   2010 AF3 (small asteroid, H=26.2 ~19m) was discovered at 0741 UT on 8 Jan. by MLS, which observed it at Jan. 8.32-41p13, 9.23p4, and 9.29p3. The discovery was confirmed by MRO (Jan. 9.24-27p4).

MPEC 2010-A43 - "17:31 UT" - 2010 AE3

• K10A03E   2010 AE3 (small asteroid, H=23.6 ~65m) was discovered at 0719 UT on 8 Jan. by CSS, which observed it at Jan. 8.31-33p4. The discovery was confirmed by Sabino Canyon Obs. (Jan. 8.37-38p3), Mark Trueblood via Kitt Peak Natl. Obs. (KPNO) (Jan. 8.38p4), MLS (Jan. 9.23-24p5), and MRO (Jan. 9.26-28p4).

MPEC 2010-A42 - "17:28 UT" - 2010 AD3

• K10A03D   2010 AD3 (risk-listed, Q=4.820 AU, H=23.9 ~56m) was discovered at 0504 UT on 8 Jan. by MLS, which observed it at Jan. 8.21-23p5, 8.28p3, 9.20p5, and 9.26-27p4. The discovery was confirmed by Trueblood/KPNO (Jan. 8.33p3) and MRO (Jan. 9.21-23p4).

MPEC 2010-A41 - "17:25 UT" - 2010 AC3

• K10A03C   2010 AC3 (small asteroid, H=22.5 ~107m) was discovered at 0500 UT on 8 Jan. by MLS, which observed it at Jan. 8.21-23p4, 8.28p3, 9.17p3, and 9.26-27p2. The discovery was confirmed by Trueblood/KPNO (Jan. 8.29p4) and MRO (Jan. 9.16-20p4).

MPEC 2010-A40 - "17:22 UT" - 2010 AB3

• K10A03B   2010 AB3 (small asteroid, Q=4.182 AU, H=23.2 ~78m) was discovered at 0409 UT on 8 Jan. by MLS, which observed it at Jan. 8.17-20p5, 8.24-25p5, 9.13p4, and 9.28-29p4. The discovery was confirmed by Trueblood/KPNO (Jan. 8.27p4), Jim Young via Table Mtn. Obs. (Jan. 8.28-30p4 & 9.32-35p4), Sabino Canyon Obs. (Jan. 8.28-29p3), and MRO (Jan. 9.14-17p4).

<< DOU on 9 Jan. '10 >>  MPEC 2010-A39 - "07:11 UT" - Daily Orbit Update

• Observations of risk-listed objects
• K10A00K   2010 AK (arc=2 days, H=19.2 ~490m) from the Spacewatch 1.8m telescope (Jan. 8.24p3)
• K09X00O   2009 XO (arc=30 days, H=20.5 ~269m) from Rio Cuarto Obs. (Jan. 8.34-35p2), Trueblood/KPNO (Jan. 8.47p4 & 8.56-57p8), CSS (Jan. 8.49p3), and MLS (Jan. 8.57p12)
• Observations of small asteroids (H>22.0)
• K10A00L   2010 AL (arc=2 days, H=22.2 ~123m) from Spacewatch 1.8m (Jan. 8.42p3)
• K09S00W   2009 SW (arc=111 days, H=22.1 ~129m) from Astronomical Research Obs. Westfield (ARO Westfield) (Jan. 6.10-13p2 at V=22.3-4)
• Observations of almost-small asteroids (21.7<H<=22.0)
• K09R01V   2009 RV1 (Q=4.417 AU, arc=118 days, H=21.9 ~141m) from Spacewatch 1.8m (Jan. 8.43-45p3)
• Observations of other objects
• K10A00E   2010 AE (arc=3 days, H=19.3 ~467m) from Rio Cuarto Obs. (Jan. 8.29-31p3) and Spacewatch 1.8m (Jan. 8.47-48p3)
• K09X02R   2009 XR2 (arc=27 days, H=19.0 ~537m) from Hamamatsu-Yuto Obs. (Jan. 8.62-64p5) and Rio Cuarto Obs. (Jan. 9.16-17p3)
• K09X00D   2009 XD (Q=4.100 AU, arc=33 days, H=18.7 ~616m) from Rio Cuarto Obs. (Jan. 9.11-14p3)
• K09U18W   2009 UW18 (arc=75 days, H=19.6 ~407m) from ARO Westfield (Jan. 6.05-07p3 at V=22.3-6)
• K09U18V   2009 UV18 (Q=5.187 AU, arc=2 opp, H=15.7 ~2.45 km, q=1.167 AU) from Hamamatsu-Yuto Obs. (Jan. 8.84-85p3)
• K09U03N   2009 UN3 (i=37.4°, arc=81 days, H=17.7 ~977m) from BDI Obs. (Jan. 8.49-51p3)
• K08Y32Z   2008 YZ32 (arc=2 opp, H=20.2 ~309m) from Wiggins Obs. (Jan. 8.12-15p5) and Hamamatsu-Yuto Obs. (Jan. 8.51-55p9)
• K07M13K   2007 MK13 (arc=3 opp, H=20.1 ~323m) from Atlante Obs. (Jan. 9.02-04p3)
• K06U00R   2006 UR (arc=2 opp, H=19.4 ~446m) from Hamamatsu-Yuto Obs. (Jan. 8.72-74p8)
• K05M00C   2005 MC (Q=4.167 AU, arc=3 opp, H=16.6 ~1.62 km) from Hamamatsu-Yuto Obs. (Jan. 8.75-76p6)
• K04X50D   2004 XD50 (arc=2 opp, H=18.5 ~676m) from Hamamatsu-Yuto Obs. (Jan. 8.77-80p6)
• K03Q05H   2003 QH5 (arc=2 opp, H=20.1 ~323m) from MLS (Jan. 8.42-43p4)
• K02Y02N   2002 YN2 (i=50.3°, arc=5 opp, H=18.4 ~708m) from MLS (Jan. 8.38-40p3)
• K00EA7B   2000 EB107 (Q=4.805 AU, arc=3 opp, H=17.2 ~1.23 km) from ARO Westfield (Jan. 6.15-18p2 at V=22.1-5)
• D8893   138893 2000 YH66 from Rio Cuarto Obs. (Jan. 8.25-27p5)
• 22753   22753 1998 WT from MLS (Jan. 8.17-20p5)
• 05693   5693 1993 EA from MLS (Jan. 8.52-54p4)
• 05324   5324 Lyapunov (1987 SL) from ARO Westfield (Jan. 6.34-38p3 at V=21.9-22.2)

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Observers  on 9 January '10

Eighteen observing facilities appear in today's MPECs.

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

Impact Risk Monitoring  on 9 January '10

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 9 January '10

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