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NASA/Goddard announced yesterday that "the Solar and Heliospheric Observatory (SOHO) discovered its 2000th comet," seen above as a faint spot, and mentions "an unexplained systematic increase in the number of comets around the sun." SOHO-1999 and -2000 were discovered in online images on December 26th by Marcin Kusiak, an astronomy student in Poland. Illustration credit: NASA, ESA, and Karl Battams at SOHO. (One correction: Comet 96P/Machholz was not a SOHO discovery.)

Contents  on 29 December '10

• IAU Minor Planet Center
  • NEOCP Activity -- five listings: 3 new, 2 updated
  • New MPECs -- three MPECs
• Observers -- twelve observers
• Impact Risk Monitoring -- nothing to report
• Chronology

Resources:

• Consolidated Risk Tables - the CRT page
    Of 389 risk-listed objects, 351 have had news in the last 31 days. Updated at 1648 UTC on 29 Dec.
• Earth's Busy Neighborhood Traffic Report
    Four objects are known to be within ten LD of Earth today. Updated at 1931 UTC on 29 Dec.
• 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 29 December '10

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

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new and two updated listings. Of these, three were "one nighters." So far The Tracking News has counted a total of eight 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 29 December '10

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been three MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

• MPEC 2010-Y34 time-stamped "07:10 UT" - Daily Orbit Update - see below
• MPEC 2010-Y35 time-stamped "16:29 UT" - 2010 YR - see below
• MPEC 2010-Y36 time-stamped "16:49 UT" - 2010 YS

MPEC 2010-Y36 - "16:49 UT" - 2010 YS

• K10Y00S   2010 YS (borderline-small, Earth MOID=4.4 LD, H=22.0 ~135m) from the Catalina Sky Survey (CSS) (Dec. 29.35-45p19) and Moriyama Obs. (Dec. 29.62-63p3)

MPEC 2010-Y35 - "16:29 UT" - 2010 YR

• K10Y00R   2010 YR (small asteroid, Earth MOID=5.6 LD, H=23.6 ~65m) from CSS (Dec. 29.15-23p11 & 29.29p4), Sabino Canyon Obs. (Dec. 29.23p3), and Moriyama Obs. (Dec. 29.55p2)

<< DOU on 29 Dec. '10 >>  MPEC 2010-Y34 - "07:10 UT" - Daily Orbit Update

• Observations of recently (no longer) risk-listed objects
• K10Y00D   2010 YD (small asteroid, arc=3 days, H=26.6 ~16m) from Sandlot Obs. (Dec. 28.28-30p3)
• K10X25D   2010 XD25 (arc=11 days, H=20.6 ~257m) from Schiaparelli Obs. (Dec. 14.12-14p3)
• K10W08Z   2010 WZ8 (arc=29 days, H=20.6 ~257m) from Schiaparelli Obs. (Dec. 14.22-23p3) and Castelmartini Obs. (Dec. 28.21p3)
• Observations of small asteroids (H>22.0)
• K10Y00O   2010 YO (arc=1 day, H=24.6 ~41m) from Bisei Spaceguard Center (Dec. 28.50-52p5)
• K10M00C   2010 MC (arc=7 days, H=24.6 ~41m) from Astronomical Research Obs. Westfield (June 19.21p3)
• K10J00A   2010 JA (arc=4 days, H=27.0 ~13m) from ARO Westfield (May 6.20-21p4)
• K10G35C   2010 GC35 (arc=6 days, H=24.7 ~39m) from ARO Westfield (April 15.12-14p3 at V=21.9-22.3)
• K10G34A   2010 GA34 (arc=84 days, H=22.5 ~107m) from ARO Westfield (April 29.18p3)
• K10F09V   2010 FV9 (arc=24 days, H=25.4 ~28m) from ARO Westfield (April 14.13-17p2 at V=22.3-7)
• K10F00O   2010 FO (arc=51 days, H=24.0 ~54m) from ARO Westfield (May 5.16-19p2 at V=22.3)
• K10F00M   2010 FM (arc=6 days, H=27.1 ~13m) from ARO Westfield (March 23.11-16p3 at V=22.2-4)
• K10E12S   2010 ES12 (arc=9 days, H=25.7 ~25m) from ARO Westfield (March 17.25-27p3 at V=21.5-22.2)
• K10C01M   2010 CM1 (arc=7 days, H=25.2 ~31m) from ARO Westfield (Feb. 14.25-27p3 at V=21.9-22.2)
• Observations of almost-small asteroids (21.7<H<=22.0)
• K10F06B   2010 FB6 (arc=22 days, H=22.0 ~135m) from ARO Westfield (March 19.30-33p3)
• K10D77H   2010 DH77 (Q=5.584 AU, arc=107 days, H=21.8 ~148m) from ARO Westfield (March 6.04-08p2 at V=22.9-23.2)
• K10C19F   2010 CF19 (arc=53 days, H=21.9 ~141m) from ARO Westfield (April 6.12-14p2 at V=22.5-7)
• K10A60O   2010 AO60 (arc=63 days, H=21.8 ~148m) from ARO Westfield (March 19.05-09p3 at V=21.9-22.2)
• Observations of other objects
• K10Y00B   2010 YB (arc=12 days, H=20.7 ~245m) from Schiaparelli Obs. (Dec. 26.97-99p3) and Castelmartini Obs. (Dec. 28.18-19p3)
• K10X67Z   2010 XZ67 (arc=21 days, H=19.4 ~446m) from Schiaparelli Obs. (Dec. 26.79-81p2)
• K10X51P   2010 XP51 (Q=4.011 AU, arc=19 days, H=18.5 ~676m) from Schiaparelli Obs. (Dec. 26.91-93p3) and Castelmartini Obs. (Dec. 28.13p3)
• K10X25E   2010 XE25 (arc=20 days, H=21.3 ~186m) from Sandlot Obs. (Dec. 28.35-36p3 & 28.44p1)
• K10X24C   2010 XC24 (i=39.0°, arc=20 days, H=19.8 ~371m) from Schiaparelli Obs. (Dec. 27.02-03p3)
• K10W08P   2010 WP8 (arc=2 opp, H=18.3 ~741m) from Wishing Star Obs. (Dec. 28.99-00p3)
• K10W07Q   2010 WQ7 (arc=32 days, H=18.2 ~776m) from Wishing Star Obs. (Dec. 29.04-06p3)
• K10W00L   2010 WL (arc=39 days, H=20.0 ~339m) from Castelmartini Obs. (Dec. 28.06-07p3)
• K10VI8K   2010 VK188 (arc=2 opp, H=18.5 ~676m) from Castelmartini Obs. (Dec. 28.10-11p3)
• K10T54P   2010 TP54 (arc=80 days, H=21.7 ~155m) from Wishing Star Obs. (Dec. 29.08-10p3)
• K10RI0S   2010 RS180 (arc=58 days, H=20.7 ~245m) from ARO Westfield (Oct. 27.23-25p2)
• K10L86F   2010 LF86 (arc=200 days, H=17.2 ~1.23 km) from Wishing Star Obs. (Dec. 29.01-02p3)
• K10L68R   2010 LR68 (Q=4.878 AU, arc=2 opp, H=18.4 ~708m) from Castelmartini Obs. (Dec. 28.14p3)
• K10J33L   2010 JL33 (Q=4.634 AU, arc=4 opp, H=17.6 ~1.02 km) from Hamamatsu-Yuto Obs. (Dec. 27.38-47p15) and Castelmartini Obs. (Dec. 28.02p3)
• K10J00G   2010 JG (arc=38 days, H=20.9 ~224m) from ARO Westfield (May 6.34-35p4)
• K10G24A   2010 GA24 (arc=189 days, H=21.1 ~204m) from ARO Westfield (April 29.22-23p3)
• K10G07G   2010 GG7 (arc=91 days, H=21.7 ~155m) from ARO Westfield (May 24.28-31p2)
• K10G07A   2010 GA7 (arc=54 days, H=21.2 ~195m) from ARO Westfield (April 29.09-12p2 & May 6.10-11p2)
• K10C19G   2010 CG19 (i=61.9°, arc=51 days, H=19.4 ~446m) from ARO Westfield (April 6.08-11p3 at V=22.1-3)
• K09U18V   2009 UV18 (Q=5.184 AU, arc=2 opp, H=16.0 ~2.14 km, q=1.167 AU) from ARO Westfield (May 28.23-24p3)
• K08A28T   2008 AT28 (arc=2 opp, H=18.5 ~676m) from WISE (Dec. 23.51p1, 23.57p1, 23.64p1, 23.71p1, 23.97p1, 24.04p1, 24.10p1, 24.17p1, 24.24p1, 24.30p2, 24.37p1, 24.43p1, 24.50p2, 24.63p1, 24.76p1, 25.03p1, 25.16p1, 25.29p1, 25.43p2, 25.56p1, 25.69p1, 25.95p1, 26.09p1, 26.62p1, 27.01p1, 27.14p1 & 27.28p1)
• K06V14B   2006 VB14 (arc=3 opp, H=18.5 ~676m) from Kiev Comet Station (Dec. 5.93-04p10)
• K04B01V   2004 BV1 (arc=2 opp, H=19.4 ~446m) from Schiaparelli Obs. (Dec. 13.97-99p3)
• K03C00A   2003 CA (q=0.387 AU, arc=5 opp, H=18.9 ~562m) from ARO Westfield (April 10.14-18p4 at V=22.5-9)
• K02O04S   2002 OS4 (arc=3 opp, H=18.3 ~741m) from Hamamatsu-Yuto Obs. (Dec. 27.53-61p7)
• K02K03L   2002 KL3 (arc=4 opp, H=18.1 ~812m) from Schiaparelli Obs. (Dec. 27.07-08p3)
• K00H74D   2000 HD74 (i=49.2°, Q=4.664 AU, arc=3 opp, H=18.0 ~851m) from ARO Westfield (April 29.29-30p3)
• K00A93Z   2000 AZ93 (arc=4 opp, H=20.7 ~245m) from Schiaparelli Obs. (Dec. 14.20-21p2)
• O9886   249886 2001 RY11 from WISE (Dec. 23.45p1, 23.58p1, 23.72p1, 23.85p1, 23.98p1, 24.11p1, 24.24p1, 24.64p2, 24.71p1, 24.77p1, 24.84p1, 24.91p1, 24.97p1, 25.04p1, 25.10p1, 25.24p1, 25.30p1, 25.37p1, 25.43p1, 25.57p1, 25.63p1, 25.70p1, 25.83p1, 25.90p1, 25.96p1, 26.03p1, 26.10p1, 26.16p1, 26.23p2, 26.43p1, 26.49p1, 26.56p1, 26.96p1, 27.02p1, 27.09p1, 27.15p2, 27.22p1, 27.29p1 & 27.35p1)
• O8818   248818 2006 SZ217 from ARO Westfield (June 26.24-27p3)
• O3025   243025 2006 UM216 from ARO Westfield (June 26.31-32p2)
• N1937   231937 2001 FO32 from ARO Westfield (Jan. 31.48-49p2)
• E1498   141498 2002 EZ16 from CSS (Dec. 28.19p3)
• 06050   6050 Miwablock (1992 AE) from ARO Westfield (April 6.36-37p3)

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

Observers  on 29 December '10

Twelve observers appear in today's MPECs.

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

Impact Risk Monitoring  on 29 December '10

At last check (NEODyS and JPL at 2359 UTC) there was no risk monitoring news to report yet today. Visit the CRT to view activity in the last four weeks and our ephemerides page for a complete list of risk-rated objects under current observation or having recent news.

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

Chronology  on 29 December '10

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