Stardust + Deep Impact mission extensions, ...two new comet flybys approved |
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Stardust + Deep Impact mission extensions, ...two new comet flybys approved |
 Dec 27 2008, 09:00 PM
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#31
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 Senior Member  Group: Members Posts: 1729 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004  |
While waiting for news of Deep Impact's Earth flyby, did anybody else notice the CONTOUR-like orbit design of the Hartley 2 encounter?
I am looking for more informations but I am finding none... |
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Dec 28 2008, 10:05 AM
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#32
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Senior Member Group: Members Posts: 1729 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
QUOTE (Paolo @ Dec 27 2008, 10:00 PM)  I am looking for more informations but I am finding none... A few details here |
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Dec 28 2008, 11:37 AM
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#33
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Member Group: Members Posts: 470 Joined: 24-March 04 From: Finland Member No.: 63 |
Are there any information about flyby visibility from Earth? I assume EPOXI will be very faint, but probably still possible to image with a telescope.
-------------------- Antti Kuosmanen
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Dec 28 2008, 01:46 PM
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#34
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Member Group: Members Posts: 470 Joined: 24-March 04 From: Finland Member No.: 63 |
Answering to my own query, I got the following information from the SeeSat mailing list:
QUOTE The perigee is in daylight over Southern Hemisphere but visible
beforehand here in Australia. The departure is on daylight side of Earth so not of any interest. I dont expect it will get brighter than mag 15 . -------------------- Antti Kuosmanen
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Dec 28 2008, 09:13 PM
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#35
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Junior Member Group: Members Posts: 57 Joined: 21-September 06 Member No.: 1172 |
HORIZONS predicts EPOXI flyby as follows:
CODE Date (CT) Body CA Dist Vrel ---------------------- ----- -------- ------ A.D. 2008 Dec 29.90349 Earth 0.000333 5.289 A.D. 2008 Dec 30.08001 Moon 0.002322 4.697 43500 km above Pacific - most distant Earth flyby I've ever seen. |
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Dec 28 2008, 09:19 PM
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#36
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Senior Member Group: Members Posts: 1729 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
QUOTE (IM4 @ Dec 28 2008, 10:13 PM) 43500 km above Pacific - most distant Earth flyby I've ever seen. The flyby does not appear to be necessarily close. It will only need to boost the orbit eccentricity, while the semiaxis will remain fixed at 1 AU. There is one more flyby coming in just one year in late December 2009 |
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Dec 30 2008, 05:53 AM
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#37
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 Junior Member Group: Members Posts: 87 Joined: 9-November 07 Member No.: 3958 |
QUOTE (akuo @ Dec 28 2008, 05:37 AM) Are there any information about flyby visibility from Earth? I assume EPOXI will be very faint, but probably still possible to image with a telescope. I seem to have not detected it with a 0.9m telescope in Arizona early on the 28th UT. The same setup did see it last time, but I haven't had a chance to dig into the new images very carefully. |
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Dec 30 2008, 08:00 AM
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#38
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Member Group: Members Posts: 118 Joined: 18-November 07 Member No.: 3964 |
QUOTE (IM4 @ Dec 28 2008, 11:13 PM) 43500 km above Pacific - most distant Earth flyby I've ever seen. Flyby distance was a tiny bit closer than that - "within 43000 km" (http://www.nasa.gov/mission_pages/epoxi/index.html |
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Jan 4 2009, 06:03 PM
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#39
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 Member Group: Members Posts: 340 Joined: 11-April 08 From: Sydney, Australia Member No.: 4093 |
At last I have put a preliminary version of the EPOXI realtime simulation online: http://www.dmuller.net/epoxi
As usual, please report any bugs and further mission information you may have :-) Incidentally I noticed a "close-ish" Earth flyby on 29 Jun 2009 around 8am UTC, distance 1.3 million km -------------------- |
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Jan 4 2009, 06:09 PM
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#40
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Senior Member Group: Members Posts: 1729 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
QUOTE (dmuller @ Jan 4 2009, 07:03 PM) Incidentally I noticed a "close-ish" Earth flyby on 29 Jun 2009 around 8am UTC, distance 1.3 million km This is due to the one-year orbit of EPOXI |
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Jan 14 2009, 12:18 AM
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#41
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Solar System Cartographer Group: Members Posts: 10146 Joined: 5-April 05 From: Canada Member No.: 227 |
Here are some images of the moon taken by Stardust:
http://stardustnext.jpl.nasa.gov/multimedia/ega_images.html And more information: http://stardustnext.jpl.nasa.gov/mission/ega.html Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Jan 14 2009, 12:52 AM
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#42
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 Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197 |
QUOTE (Phil Stooke @ Jan 13 2009, 04:18 PM) Here are some images of the moon taken by Stardust: Which moon? Titan? -------------------- If Occam had heard my theory, things would be very different now.
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Jan 14 2009, 01:33 AM
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#43
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Solar System Cartographer Group: Members Posts: 10146 Joined: 5-April 05 From: Canada Member No.: 227 |
Oops, I should have said The Moon.
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Jan 14 2009, 05:26 AM
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#44
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Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197 |
The hazy appearance had me confused.
-------------------- If Occam had heard my theory, things would be very different now.
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Jan 14 2009, 07:22 AM
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#45
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Member Group: Members Posts: 340 Joined: 11-April 08 From: Sydney, Australia Member No.: 4093 |
I somehow seem to have missed these two mission extensions completely. My apologies. Very preliminary Stardust realtime simulation page now at http://www.dmuller.net/stardust - I hope I have trajectory data in there within 48 hours.
-------------------- |
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