IPB

Welcome Guest ( Log In | Register )

5 Pages V  « < 3 4 5  
Reply to this topicStart new topic
LRO-LCROSS - Orbit Insertion / Flyby Coverage
Lewis007
post Jun 29 2009, 07:22 AM
Post #61


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.
Go to the top of the page
 
+Quote Post
climber
post Jun 30 2009, 09:34 PM
Post #62


Senior Member
****

Group: Members
Posts: 2917
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


--------------------
Go to the top of the page
 
+Quote Post
zeBeamer
post Jul 1 2009, 03:03 AM
Post #63


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)
Go to the top of the page
 
+Quote Post
JRA
post Aug 10 2009, 03:06 AM
Post #64


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.
Go to the top of the page
 
+Quote Post
jmknapp
post Aug 10 2009, 08:25 PM
Post #65


Senior Member
****

Group: Members
Posts: 1465
Joined: 9-February 04
From: Columbus OH USA
Member No.: 13



QUOTE (JRA @ Aug 9 2009, 10:06 PM) *
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.


--------------------
Go to the top of the page
 
+Quote Post
JRA
post Aug 12 2009, 11:52 PM
Post #66


Newbie
*

Group: Members
Posts: 19
Joined: 17-June 09
Member No.: 4825



QUOTE (jmknapp @ Aug 10 2009, 12:25 PM) *
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! :-)"
Go to the top of the page
 
+Quote Post
2amazing
post Sep 14 2009, 04:42 PM
Post #67


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
Go to the top of the page
 
+Quote Post
Guest_Zvezdichko_*
post Sep 15 2009, 08:37 PM
Post #68





Guests






http://lroupdate.blogspot.com/

LRO now in its final orbit!
Go to the top of the page
 
+Quote Post
elakdawalla
post Sep 15 2009, 08:53 PM
Post #69


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? smile.gif Thanks for this and all your other tips.


--------------------
My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
Go to the top of the page
 
+Quote Post
Guest_Zvezdichko_*
post Sep 15 2009, 09:01 PM
Post #70





Guests






I'll take this as a compliment smile.gif Yes of course, I had a dinner just an hour ago tongue.gif . 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.
Go to the top of the page
 
+Quote Post
Phil Stooke
post Sep 15 2009, 10:13 PM
Post #71


Solar System Cartographer
****

Group: Members
Posts: 10127
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
NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain)
Go to the top of the page
 
+Quote Post
2amazing
post Sep 16 2009, 07:54 PM
Post #72


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 smile.gif

Before final orbit was it 43 and 176 km.

Now wait and see the results of the high res images.

Go to the top of the page
 
+Quote Post

5 Pages V  « < 3 4 5
Reply to this topicStart new topic

 



RSS Lo-Fi Version Time is now: 28th March 2024 - 09:16 AM
RULES AND GUIDELINES
Please read the Forum Rules and Guidelines before posting.

IMAGE COPYRIGHT
Images posted on UnmannedSpaceflight.com may be copyrighted. Do not reproduce without permission. Read here for further information on space images and copyright.

OPINIONS AND MODERATION
Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators.
SUPPORT THE FORUM
Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member.