Unmanned Exploration Of Comets & Asteroids |
Unmanned Exploration Of Comets & Asteroids |
Guest_PhilCo126_* |
Jan 2 2006, 07:48 PM
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#1
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Guests |
Trying to give an overview of missions to Asteroids & comets …
Giotto ( 2 July 1985 to comet HALLEY in 1986 and to comet Grigg-Skjellerup in 1992 ) NEAR Shoemaeker ( 17 February 1996 to asteroid 433 Eros in February 2001 ) Deep Space 1 ( 15 October 1998 to comet BORELLY in September 2001 ) StarDust ( 07 February 1999 to comet WILD-2 in January 2004 ) Contour ( July 2002 to comet ENCKE … mission failure ) Deep Impact ( 12 January 2005 to comet TEMPLE-1 in July 2005 ) Which missions did I forget ? … … … |
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Jun 20 2021, 04:51 PM
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#2
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Member Group: Members Posts: 447 Joined: 1-July 05 From: New York City Member No.: 424 |
It seems as though mega-comet 2014 UN271 will be the subject of sustained study and lively discussion, even if it never becomes the object of a mission. In light of Rule 2.8 I’m parking this post here with the request that the mods consider moving it to its own thread.
QUOTE T. Marshall Eubanks @TM_Eubanks Interesting discovery: 2014 UN271- a 100 km object from DECam. Perihelion 2031 Jan 28 a = 5416.99752 +/- 228 AU e = 0.9979808 +/- 8.56e-5 Incl. 95.53003 +/- 0.00023 Period = 398692 years! H = 7.8 q = 10.9377353 +/- 0.000814 AU Q = 10823.0573 +/- 459 AU https://twitter.com/TM_Eubanks/status/1406122217142984704 QUOTE Jason Wright @Astro_Wright No biggie, just a barely-bound dwarf planet coming within 11 au of the sun over the next 10 years… The next decade of planetary science discoveries is going to be WILD! https://twitter.com/Astro_Wright/status/1406327094863446017 QUOTE Emily Lakdawalla @elakdawalla Oh my gosh, how fast can we build and launch something to rendezvous with this mega-comet? Size suggests probably not technically a dwarf planet but it’s a big ‘un. (About Epimetheus size.) 11 AU is near Saturn distance so still cold enough to be quite pristine. https://twitter.com/elakdawalla/status/1406584665859772417 |
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