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Comets for 2010

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brianb
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« on: September 30, 2009, 03:09:20 pm »

Just got my copy of the 2010 BAA Handbook.

1. 2007 Q3 (Siding Spring) - this is at its brightest in the Coma region around the turn of the year, the continuation ephemeris has been brightened by 1.5 mags & consequently we may now expect the comet to be around mag. 8.5 at the end of Dec 2009 into early Jan 2010.

2. 81P/Wild is above mag 9 from mid Feb to end April, around 14h -6 deg (Virgo). Peaking at 8.5.

3. The big one ... 103P/Hartley should be a naked eye object in October, reaching mag. 4.7, moving rapidly South through Auriga.

A "new" comet could of course be discovered at any time.
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rjgjr
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« Reply #1 on: September 30, 2009, 04:27:39 pm »

Thanks for the update Brian, always hoping for that next "great one".
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John9929
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« Reply #2 on: September 30, 2009, 05:43:21 pm »

Thanks for the info Brian, 103P/Hartley sounds interesting indeed!
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markt
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« Reply #3 on: October 01, 2009, 06:55:31 am »

Cheers for the heads up Brian!  Hartley sounds like fun - we need  a new naked eye comet, seems like the last one (Holmes?) was ages ago now...
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Roman White
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« Reply #4 on: October 03, 2009, 03:14:54 pm »

2007 Q3 (Siding Spring)
Anybody have seen the recent visual estimates of it?  Huh (The last one I saw were ~12m in June.)
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« Reply #5 on: October 05, 2009, 01:04:27 am »

Cheers for the heads up Brian!  Hartley sounds like fun - we need  a new naked eye comet, seems like the last one (Holmes?) was ages ago now...

A comet Brian sounds like a good idea!  Grin Thanks for the info.
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Andy
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« Reply #6 on: October 26, 2009, 06:17:59 pm »

C/2009 U5 (Grauer)
New comet - C/2009 U5 (Grauer), discovered a few days ago, may be a binocular object next year.
If the ephemeride is correct, it will be brighter than 10.0m from late July to early October 2010, peaking at 7.3m near September 1st.
It will move rapidly southwards since September, and will be below -40° DEC after September 20th.

The preliminary orbit for C/2009U5 was highly inaccurate, now it has significantly changed: the comet will peak only at 18.5m in February 2010, being at 5.2 AU distance from Earth (q = 6.11 AU) (!)


Here is the 'wish list' for year 2010:
  • C/2007 Q3 (Siding Spring) - will remain as bright (as in December) in January 2010
  • 81P/Wild - max 9.3m in late March, >10.0m from early February to early May.
  • C/2009 O2 (Catalina) - >10.0m mid-March to mid-April, max 8.9m
  • C/2009 K5 (McNaught) - >10.0m from April to mid-May, max 9.6m
  • C/2009 R1 (McNaught) - max 4.7m near July 1st, >10.0m mid-May to mid-August
  • 10P/Tempel - max 8.1m in mid-July, brighter than 10.0m from mid-May to September. (Declination -05...-20)
  • 2P/Encke - MPC predicts max 5.0m in early August, >10.0m from mid-July to early September (S.Yoshida predicts maximum near 7.5~8.0m)
  • 103P/Hartley - peaking near 5.0m in late October, >10.0m from September to Jan.2011

P.S. Quite a nice list, isn't it?   Smiley
« Last Edit: November 16, 2009, 08:33:08 pm by Roman White » Report Spam   Logged

SkyWatcher 130/900mm EQ3, Bresser 76/700mm, 20x90 bino. and other, Olympus SP-550UZ
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