LRO-LCROSS - Orbit Insertion / Flyby Coverage |
LRO-LCROSS - Orbit Insertion / Flyby Coverage |
Jun 22 2009, 12:39 PM
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#1
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Newbie Group: Members Posts: 6 Joined: 11-January 08 Member No.: 4004 |
Cool video produced by NASA Public Affairs, no ads.
Enjoy LRO-LCROSS Webcast Part 1 of 2 http://www.youtube.com/watch?v=2EDMGH1Esq4 LRO-LCROSS Webcast Part 2 of 2 http://www.youtube.com/watch?v=k1u7tX_4TyI |
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Jun 29 2009, 07:22 AM
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#61
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Junior Member Group: Members Posts: 29 Joined: 11-May 09 Member No.: 4772 |
Following the initial LOI burn of LRO on June 23, an additional four burns have been made, to put the probe into the so-called commissioning orbit. I prepared an overview of these burns below; the info comes from the http://lroupdate.blogspot.com/ website.
burn / date / time (EDT) / duration / (polar) orbit LOI-2 / 24-06-2009 / 06:56 / 12 min / 200 x 1680 km LOI-3 / 25-06-2009 / 06:32 / 12 min / 199 x 740 km LOI-4 / 26-06-2009 / 08:25 / 10 min / 200 x 200 km LOI-5 / 27-06-2009 / 08:34 / 4 min / 31 x 199 km About a week and half after reaching the commissioning orbit, the process starts of activating the remaining instruments and start calibrating them. |
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Jun 30 2009, 09:34 PM
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#62
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Senior Member Group: Members Posts: 2922 Joined: 14-February 06 From: Very close to the Pyrénées Mountains (France) Member No.: 682 |
LCROSS spoted with an amateur telescope: http://www.backyardastronomer.com/lcross/L...90629-anim2.gif
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Jul 1 2009, 03:03 AM
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#63
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Junior Member Group: Members Posts: 22 Joined: 20-June 09 Member No.: 4830 |
This morning, the LOLA instrument was turned on (not the lasers, just the receptors), and began collecting Laser Ranging data later in the afternoon !
Those data are not exactly like SLR (Satellite Laser Ranging), because it is not a two-way link, but they are timetagged at both the transmitting end (the Goddard station) and the receiving end (the LOLA receptor #1, through a fiber optics between a small telescope attached to the Earth-pointing high-gain antenna and the Moon-pointing LOLA instrument). They give an absolute range betwen the Earth and LRO (after some careful correlation and calibration), which will help improve the position knowledge of the spacecraft and benefit all the instruments (especially LROC, which turned on today for a bit!) (see the LRO blog) |
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Aug 10 2009, 03:06 AM
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#64
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Newbie Group: Members Posts: 19 Joined: 17-June 09 Member No.: 4825 |
Does anyone have any news as to when the LRO will move into it's mission orbit? I assume it depends on how all the instruments are checking out, and as far as I've read, everything seems to have been working great so far. I've read in the press kit that the commissioning orbit could last up to 60 days, but I figured it could turn out to be less then that if everything is going well.
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Aug 10 2009, 08:25 PM
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#65
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Senior Member Group: Members Posts: 1465 Joined: 9-February 04 From: Columbus OH USA Member No.: 13 |
Does anyone have any news as to when the LRO will move into it's mission orbit? I assume it depends on how all the instruments are checking out, and as far as I've read, everything seems to have been working great so far. I've read in the press kit that the commissioning orbit could last up to 60 days, but I figured it could turn out to be less then that if everything is going well. FWIW, according to the trajectory files at http://lroc.sese.asu.edu/downloads.html (LRO_Mission_Baseline_Ephemeris_v10), they should already be in a 53x48 km orbit today (Aug. 10). Not a tweet on that score at http://twitter.com/lro_NASA though. -------------------- |
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Aug 12 2009, 11:52 PM
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#66
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Newbie Group: Members Posts: 19 Joined: 17-June 09 Member No.: 4825 |
FWIW, according to the trajectory files at http://lroc.sese.asu.edu/downloads.html (LRO_Mission_Baseline_Ephemeris_v10), they should already be in a 53x48 km orbit today (Aug. 10). Not a tweet on that score at http://twitter.com/lro_NASA though. Thank you for the info and the links. And I just saw this today on the LRO twitter. "Orbit #583 around the Moon! Still humming along in my commissioning orbit, on track for Mission Orbit Insertion end of August! :-)" |
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Sep 14 2009, 04:42 PM
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#67
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Newbie Group: Members Posts: 12 Joined: 24-August 09 Member No.: 4911 |
Orbit #988 about the Moon!! Final instrument calibrations as my team prepares for my Mission Orbit Insertion (MOI) burn tomorrow.
http://twitter.com/LRO_NASA 14-sept-09 |
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Guest_Zvezdichko_* |
Sep 15 2009, 08:37 PM
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#68
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Guests |
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Sep 15 2009, 08:53 PM
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#69
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
Zvedichko, do you do anything but sit in front of your computer hitting "refresh" on your browser? Thanks for this and all your other tips.
-------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Guest_Zvezdichko_* |
Sep 15 2009, 09:01 PM
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#70
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Guests |
I'll take this as a compliment Yes of course, I had a dinner just an hour ago . And I'm preparing to travel to the capital tomorrow so I won't be able to follow the press-conference on Thursday.
I had a lot of work today in front of my monitor, because I'm following the progress of Phobos-Grunt and there are interesting publications in the ru-net. That's why I also had the chance to check LRO's websites. |
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Sep 15 2009, 10:13 PM
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#71
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Solar System Cartographer Group: Members Posts: 10191 Joined: 5-April 05 From: Canada Member No.: 227 |
Your contributions are very useful!
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PD: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf 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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Sep 16 2009, 07:54 PM
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#72
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Newbie Group: Members Posts: 12 Joined: 24-August 09 Member No.: 4911 |
With this the tool on http://lroc.sese.asu.edu/whereislro, you can see the altitude
<Display options,> Altitude (height in km) show. You see that the height orbit is between 32 km and 72 km Before final orbit was it 43 and 176 km. Now wait and see the results of the high res images. |
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