dmuller
Jul 10 2010, 07:06 AM
QUOTE (Hungry4info @ Jul 10 2010, 04:02 PM)
![*](http://www.unmannedspaceflight.com/style_images/ip.boardpr/post_snapback.gif)
According to the Rosetta Real-Time Simulation, they've started the flip manouevre.
Not yet ... the red box is the "next event" ... start of the flip maneuver is still some 4 hours away.
EDIT: Will try to make it clearer in version 3 of the sim
Hungry4info
Jul 10 2010, 10:37 AM
Ahh okay. My mistake.
From the Rosetta Blog.
Less than 330,000 km!
http://webservices.esa.int/blog/post/5/1238QUOTE
Richard Moissl on the OSIRIS team just wrote: "We are closing in at a steady pace (less than 330,000km distance to the asteroid now) and the narrow angle camera is starting to resolve surface structures." -- Daniel
cassioli
Jul 10 2010, 12:58 PM
160.000 km and counting!
http://www.dmuller.net/ is a REALLY cool site!
Will flyby image be live, or will they be released only after "18:19:53 Resume radio communications via high-gain antenna - Acquisition of TM signal (latest)" ?
Hungry4info
Jul 10 2010, 01:58 PM
I'm guessing after they re-establish contact with Rosetta.
Maybe at
"16:00:00 Resume Webcast - Media Event Life from ESA/ESOC - Science Team Present Images"
elakdawalla
Jul 10 2010, 02:17 PM
The first images will not be released until just after the World Cup Match is over; the schedule says 23:05 CEST but it could be later if the match runs into overtime.
Daniel: Your simulation is, as usual, terrific, but there's one thing about it that's a bit confusing -- all spacecraft events are reported as SCET but the Earth events are reported in Earth time. Since one way light time is 25 minutes there's a significant difference. So your countdown has the webcast starting after closest approach, when in fact it starts before closest approach ERT....not sure what to recommend as a fix though, because I like events being reported as SCET but it wouldn't make sense to convert Earth events to SCET.
dmuller
Jul 10 2010, 02:46 PM
Emily: You've described my problem quite well! The ultimate solution will be to offer two realtime simulations, one in SCET, the other in ERT. The problem is the data processing, in particular converting events from SCET into ERT without blowing up the database (or doing everything manually!) My target to have that sorted out is the MESSENGER Mercury Orbit Insertion. Unfortunately there is no quick fix, other than leaving out Earth-based events (which I usually do), however, in this case I wanted to draw attention that ESA has a webcast.
maschnitz: it's great that people find the website useful. The link from ESA has certainly yielded many referrals. On 10 July (my local time in Australia), I had 2,200 visits (usually between 40 to 100).
elakdawalla
Jul 10 2010, 02:49 PM
Perhaps as a short term solution, for the few events you report that are on Earth (like the webcast) , you could just include text indicating what OWLT is and how to correct...
dmuller
Jul 10 2010, 02:55 PM
Sounds like a feasible idea. Too late to implement for Rosetta @ Lutetia, traffic to the site is too high at the moment and I won't risk messing up the database now
Hungry4info
Jul 10 2010, 03:34 PM
A webcast has started.
http://webservices.esa.int/blog/post/5/1244"Rosetta is a spacecraft. Lutetia is an asteroid. Rosetta will fly by Lutetia." kind of stuff.
volcanopele
Jul 10 2010, 03:35 PM
LOL, of course the images will be presented only after I board my flight in Dallas...
Hungry4info
Jul 10 2010, 03:54 PM
Well, we passed closest approach a few minutes ago.
Edit: And here comes the live webcast.
Phil Stooke
Jul 10 2010, 04:21 PM
Hungry4info
Jul 10 2010, 04:22 PM
Behold Lutetia:
Edit: He beat me to it
Alan Stern
Jul 10 2010, 04:38 PM
QUOTE (Paolo @ May 1 2010, 08:38 AM)
![*](http://www.unmannedspaceflight.com/style_images/ip.boardpr/post_snapback.gif)
This is interesting: the Ptolemy mass spectrometer on the Rosetta orbiter will attempt to detect a faint exosphere around Lutetia
Alice UVS is doing the same.
alan
Jul 10 2010, 04:48 PM
Contact reestablished following close approach
kenny
Jul 10 2010, 05:02 PM
Wonderful images! 100 km across and no evidence of gravitional rounding. Any thoughts / evidence on what size that effect kicks in?
Congratulations to ESA.
cassioli
Jul 10 2010, 05:03 PM
fly-by mission accomplished.
heading to the comet now.
Phil Stooke
Jul 10 2010, 05:07 PM
"100 km across and no evidence of gravitional rounding. Any thoughts / evidence on what size that effect kicks in?"
That depends on the internal strength of the object, including its temperature history. Vesta at 500 km across is noticeably irregular - but rocky - whereas icy Mimas is only 400 km across and a bit elongated by tidal effects but a nice ellipsoidal shape.
Phil
Loiserl
Jul 10 2010, 05:08 PM
I just put the Lutetia close-up animation. I'll add more info for the Spanish speakers too:
http://www.espaciosur.com.ar/2010/07/image...on-rosetta.html - Cheers.
dilo
Jul 10 2010, 05:27 PM
Loiserl, you beat me. In my version, I introduced dissolvence between most recent frames because the time lapse is clearly larger...
Stu
Jul 10 2010, 05:37 PM
QUOTE (Hungry4info @ Jul 10 2010, 04:36 PM)
![*](http://www.unmannedspaceflight.com/style_images/ip.boardpr/post_snapback.gif)
Phil Stooke just posted that.
Very easily done, and it really doesn't matter, does it?
Phil Stooke
Jul 10 2010, 06:10 PM
Playing around with contrast a bit and rearranging the images in the big composite...
Click to view attachmentOne frame was flipped (mirror-image) left-right - the top one in the left column in this version.
The second image in the sequence (one up from lower left corner) is approximately the same view as the last image, so these cover a full rotation. They are approximately north-up here. Images of course are courtesy ESA and the Rosetta and OSIRIS teams, and a big thanks to them for releasing them so soon.
Phil
dilo
Jul 10 2010, 07:23 PM
Thank you Phil for your analysis... I used last two frames (with some relative rotation) in order to create following stereograms:
crossed eyes:
Click to view attachmentparallel eyes:
Click to view attachmentSome artifacts/incongruences are due to slightly different illumination, I guess!
alan
Jul 10 2010, 09:03 PM
Live webcast is started
ugordan
Jul 10 2010, 09:04 PM
alan
Jul 10 2010, 09:07 PM
Phil Stooke
Jul 10 2010, 09:15 PM
The best set of grooves on any object since Phobos. This has to put an end to the 'grooves caused by Mars ejecta' argument. fantastic object and a wonderful data set. And this is just the highest priority data, all the rest still to come.
Phil
cassioli
Jul 10 2010, 09:21 PM
Never seen before: an asteroid with a planet in its background... and it's not ITS "own" planet!
nprev
Jul 10 2010, 09:38 PM
QUOTE (Phil Stooke @ Jul 10 2010, 01:15 PM)
![*](http://www.unmannedspaceflight.com/style_images/ip.boardpr/post_snapback.gif)
The best set of grooves on any object since Phobos. This has to put an end to the 'grooves caused by Mars ejecta' argument.
Very first thing I thought when seeing these as well, Phil.
The image with Saturn in the distance...
![ohmy.gif](http://www.unmannedspaceflight.com/style_emoticons/default/ohmy.gif)
(I think ESA's figuring out this outreach business...)
ugordan
Jul 10 2010, 09:40 PM
A bit of a colorization of that image:
Click to view attachment
cassioli
Jul 10 2010, 09:42 PM
quick and dirt anaglyph:
nprev
Jul 10 2010, 09:44 PM
Sweet, Gordan!
So far, gotta say that Rosetta would be a frontrunner choice if I was allowed to ride along with a spacecraft (remember the Mars flyby pic?)
dilo
Jul 10 2010, 09:57 PM
Starting from now, this is my wallpaper!
ugordan
Jul 10 2010, 10:06 PM
Some parts of that terrain look so smooth, it reminds me of one MRO image where the surface imaged is so smooth you get the effect the camera is out of focus (and only a crater here and there broke that illusion).
ElkGroveDan
Jul 10 2010, 10:11 PM
QUOTE (ugordan @ Jul 10 2010, 01:04 PM)
![*](http://www.unmannedspaceflight.com/style_images/ip.boardpr/post_snapback.gif)
Lutetia and Saturn!!!
WOW OH WOW OH WOW!
Someone tell me there's at least a three filter set of this image.
peter59
Jul 10 2010, 10:11 PM
Strange, It looks like shadows. The first is clearly elongated. Optical errors or real shadows ?
Click to view attachment
ugordan
Jul 10 2010, 10:14 PM
Crud in in the optics, I'd say.
ElkGroveDan
Jul 10 2010, 10:15 PM
QUOTE (alan @ Jul 10 2010, 01:07 PM)
![*](http://www.unmannedspaceflight.com/style_images/ip.boardpr/post_snapback.gif)
Reminds me of Phobos
Totally agree. It has a very "Phobosian" look about it. If I may coin a phrase.
machi
Jul 10 2010, 10:24 PM
Fantastic flyby! Evidently NAC camera worked flawlessly.
Some smooth areas - possible landslides ?
ngunn
Jul 10 2010, 10:28 PM
QUOTE (ElkGroveDan @ Jul 10 2010, 11:11 PM)
![*](http://www.unmannedspaceflight.com/style_images/ip.boardpr/post_snapback.gif)
Someone tell me there's at least a three filter set of this image.
Don't worry. If there wasn't Gordan will provide one.
I'm kicking myself now because when I looked at the last few approach shots I thought I saw linear features that might be Phobos-like grooves (at the bottom of the images) but didn't have the courage to post.
NickF
Jul 10 2010, 11:13 PM
Here's a quick composite showing Lutetia very approximately to scale with some other icy and rocky bodies from the Solar System.
Click to view attachment
nprev
Jul 10 2010, 11:17 PM
Nice, Nick! That's an excellent scale reference.
Alan Stern
Jul 10 2010, 11:41 PM
QUOTE (nprev @ Jul 11 2010, 12:17 AM)
![*](http://www.unmannedspaceflight.com/style_images/ip.boardpr/post_snapback.gif)
Nice, Nick! That's an excellent scale reference.
I'd love to see Triton on there for scale!
alan
Jul 10 2010, 11:55 PM
QUOTE (machi @ Jul 10 2010, 05:24 PM)
![*](http://www.unmannedspaceflight.com/style_images/ip.boardpr/post_snapback.gif)
Some smooth areas - possible landslides ?
Above the smooth areas in the left crater the surface looks either wrinkled or layered.
NickF
Jul 11 2010, 12:31 AM
QUOTE (Alan Stern @ Jul 11 2010, 12:41 AM)
![*](http://www.unmannedspaceflight.com/style_images/ip.boardpr/post_snapback.gif)
I'd love to see Triton on there for scale!
Happy to oblige
Click to view attachment
Alan Stern
Jul 11 2010, 12:53 AM
Thanks Nick- That shows just what I wanted!
Alan
Phil Stooke
Jul 11 2010, 01:53 AM
Triton? Are you sure you don't mean Pluto?
Phil
DrShank
Jul 11 2010, 02:21 AM
QUOTE (machi @ Jul 10 2010, 05:24 PM)
![*](http://www.unmannedspaceflight.com/style_images/ip.boardpr/post_snapback.gif)
Fantastic flyby! Evidently NAC camera worked flawlessly.
Some smooth areas - possible landslides ?
looks that way. my guess would be that it is material displaced laterally when the small crater on the rim just above it hit.
a landslide true but one with a violent origin!
Alan Stern
Jul 11 2010, 02:56 AM
QUOTE (Phil Stooke @ Jul 11 2010, 02:53 AM)
![*](http://www.unmannedspaceflight.com/style_images/ip.boardpr/post_snapback.gif)
Triton? Are you sure you don't mean Pluto?
Phil
;-)
Mirek
Jul 11 2010, 03:36 AM
Just for a joke. Sorry NickF
Click to view attachment
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