C/SOHO-2000 discovered 26 Dec. 2010 by Marcin Kusiak 
in online SOHO images. Credit: NASA/ESA/SOHO-Battams.

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


The latest A/CC news is available via framed access, RSS news feed 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.

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.

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

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

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

Observers  on 29 December '10

Twelve observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 26 in MPEC 2010-Y34 -- 2010 RS180, 2010 MC, 2010 JG, 2010 JA, 2010 GG7, 2010 GC35, 2010 GA7, 2010 GA34, 2010 GA24, 2010 FV9, 2010 FO, 2010 FM, 2010 FB6, 2010 ES12, 2010 DH77, 2010 CM1, 2010 CG19, 2010 CF19, 2010 AO60, 2009 UV18, 2003 CA, 2000 HD74, 248818, 243025, 231937, 6050
300Bisei Spaceguard Center in Japan, 1 in MPEC 2010-Y34 -- 2010 YO
160Castelmartini Obs. in Italy, 7 in MPEC 2010-Y34 -- 2010 YB, 2010 XP51, 2010 WZ8, 2010 WL, 2010 VK188, 2010 LR68, 2010 JL33
703Catalina Sky Survey (CSS) in Arizona, 3 in MPECs 2010-Y34, 2010-Y35 & 2010-Y36 -- 2010 YS, 2010 YR, 141498
379Hamamatsu-Yuto Obs. in Japan, 2 in MPEC 2010-Y34 -- 2010 JL33, 2002 OS4
585Kiev Comet Station in the Ukraine, 1 in MPEC 2010-Y34 -- 2006 VB14
900Moriyama Obs. in Japan, 2 in MPECs 2010-Y35 & 2010-Y36 -- 2010 YS, 2010 YR
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2010-Y35 -- 2010 YR
H36Sandlot Obs. in Kansas, 2 in MPEC 2010-Y34 -- 2010 YD, 2010 XE25
204Schiaparelli Obs. in Italy, 9 in MPEC 2010-Y34 -- 2010 YB, 2010 XZ67, 2010 XP51, 2010 XD25, 2010 XC24, 2010 WZ8, 2004 BV1, 2002 KL3, 2000 AZ93
C51WISE in Earth polar orbit, 2 in MPEC 2010-Y34 -- 2008 AT28, 249886
I15Wishing Star Obs. in Rhode Island, 4 in MPEC 2010-Y34 -- 2010 WQ7, 2010 WP8, 2010 TP54, 2010 LF86
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

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.

Chronology  on 29 December '10

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

1801Grabbed MPEC 2010-Y36 - 2010 YS - see above
1646Grabbed MPEC 2010-Y34 - Daily Orbit Update - see above
Grabbed MPEC 2010-Y35 - 2010 YR - see above