Chandrayaan 3: Launch and Discussions
Re: Chandrayaan 3: Launch and Discussions
Useful description of the landing procedure:
Re: Chandrayaan 3: Launch and Discussions
Since we are talking about craters and names.... here is some tidbit - which you can perhaps only come to know in a BRF dhaga .... Or let me post the questions here, and see if people can guess (Hopefully without google). (I will post an answer if others did not find it)
Is there a crater named Modi (True/False)
Is there a crater name after Ravi? (A common name - but not any great scientist ) (True/False)
How about Sita ? (True / False)
Ramanujan - is a crater on Moon but it is named after a mathematician.
Is there a crater named Modi (True/False)
Is there a crater name after Ravi? (A common name - but not any great scientist ) (True/False)
How about Sita ? (True / False)
Ramanujan - is a crater on Moon but it is named after a mathematician.
Re: Chandrayaan 3: Launch and Discussions
^^^
Just to lighten things up from serious science...
Huh? The Congis didn't push for lunar features to be named after Bandit NeverWho and the Nehru-Gandhi clan? Without them there would never have been any scientific progress in India or even computers and telecommunication facilities according to them.
Amber G and others... Thank you for your informative posts and taking the time to enlighten us all. Really appreciated.
Just to lighten things up from serious science...
Huh? The Congis didn't push for lunar features to be named after Bandit NeverWho and the Nehru-Gandhi clan? Without them there would never have been any scientific progress in India or even computers and telecommunication facilities according to them.
Amber G and others... Thank you for your informative posts and taking the time to enlighten us all. Really appreciated.
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Re: Chandrayaan 3: Launch and Discussions
Dilbu needs to be here from at least 16:00 IST on Wed 23 Aug 2023.
Re: Chandrayaan 3: Launch and Discussions
Thanks.Ashokk wrote: ↑23 Aug 2023 02:53 Good info from Scott Tilley.
https://twitter.com/coastal8049/status/ ... 6243188209
Also my earlier post CH2, CH3PM and CH3, orbits describes them (see <this> .. The positions could be simply calculated by figures (elements derived from JPL/NASA - reduced to simple calculation..(Assuming circular orbits would be fine as error introduced in 1-2 days is quite small).
I might put more recent base figures (especially position of CH2, CH3PM and CH3 - at recent EPOC).
(Plan for Sankara's animation was to show position of PM and CY2 too... but I don't think it is there in the web interface now)
This of course is true for the trajectories - before hard braking (18 minutes of terror starts) ..
Reposting the position of CY2, CY3 PM from Ashokk's post (HT Scott Tilley).
(Moon would below horizon where I live, but it will be above horizon in India)
(Nice thing, as I noted in the last post ;" CH2 and CH3PM are orbiting in such a way at least one of them will be in visible/radio range from CH3 around most of the time during those 14 days....Would have been nice if there were three such relays - 120 degree apart then 100% of the time, some chandrayaan would be visible from Vikram. )
Re: Chandrayaan 3: Launch and Discussions
Elements Keplerian for CH3PM. CH2, CH3:
a= CH3PM -> 1895.6 CH2 -> 1845 , CH3 -> 1816 Km
e = .004, .01, .03 (All are nearly circular - CH3 is little more elliptical)
Inc = 89.66, 90.3, 89.7 --All almost 90 degree (All polar orbits)
OM = 270 degree, 272 Degree, 270 Degree (All almost same plane)
Time Period 7406 secs, 7111 secs, 6946 secs
Angle from node at August 23, 00:00:00 (UTC) (X axis of ellipse)
CH3P -- 186.0, CH2 -> 50.5, CH3 -> 100.2 (All in degrees)
a= CH3PM -> 1895.6 CH2 -> 1845 , CH3 -> 1816 Km
e = .004, .01, .03 (All are nearly circular - CH3 is little more elliptical)
Inc = 89.66, 90.3, 89.7 --All almost 90 degree (All polar orbits)
OM = 270 degree, 272 Degree, 270 Degree (All almost same plane)
Time Period 7406 secs, 7111 secs, 6946 secs
Angle from node at August 23, 00:00:00 (UTC) (X axis of ellipse)
CH3P -- 186.0, CH2 -> 50.5, CH3 -> 100.2 (All in degrees)
Re: Chandrayaan 3: Launch and Discussions
Special Treat for BRF!
Under 8 hours to go... There have been a couple of orbit updates yesterday ..so that has been update .. . Here comes a new Landing drone view which you can play in real time speed while watching the live telecast. !
Enjoy (Click the image to see the animation in real time ... Tomorrow 18:04 IST Landing of Vikram...
Credit: Sankara V. (See:https://sankara.net/chandrayaan3.html
Under 8 hours to go... There have been a couple of orbit updates yesterday ..so that has been update .. . Here comes a new Landing drone view which you can play in real time speed while watching the live telecast. !
Enjoy (Click the image to see the animation in real time ... Tomorrow 18:04 IST Landing of Vikram...
Credit: Sankara V. (See:https://sankara.net/chandrayaan3.html
Last edited by Amber G. on 23 Aug 2023 10:51, edited 1 time in total.
Re: Chandrayaan 3: Launch and Discussions
Reporting for duty sir. Chandrayaan 3 will not successfully soft land onlee.Mort Walker wrote: ↑23 Aug 2023 09:09 Dilbu needs to be here from at least 16:00 IST on Wed 23 Aug 2023.
Re: Chandrayaan 3: Launch and Discussions
Disha What time is the landing in California time?
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Re: Chandrayaan 3: Launch and Discussions
Don't sleep!Dilbu wrote: ↑23 Aug 2023 11:09Reporting for duty sir. Chandrayaan 3 will not successfully soft land onlee.Mort Walker wrote: ↑23 Aug 2023 09:09 Dilbu needs to be here from at least 16:00 IST on Wed 23 Aug 2023.
Re: Chandrayaan 3: Launch and Discussions
Live telecast will begin at
* US 4:50 AM PDT (California), 7:50 AM EDT (New York).
* AUS 9:50 PM Sydney NSW
* IST 5:20 PM (India)
Link for live telecast below:
https://www.isro.gov.in/LIVE_telecast_o ... nding.html
ETA for touchdown is ~ 5:34 AM PDT/7:34 AM EDT / 6:04 PM IST
Re: Chandrayaan 3: Launch and Discussions
https://twitter.com/isro/status/1694248755594436829
Chandrayaan-3 Mission:
All set to initiate the Automatic Landing Sequence (ALS).
Awaiting the arrival of Lander Module (LM) at the designated point, around 17:44 Hrs. IST.
Upon receiving the ALS command, the LM activates the throttleable engines for powered descent.
The mission operations team will keep confirming the sequential execution of commands.
The live telecast of operations at MOX begins at 17:20 Hrs. IST
Re: Chandrayaan 3: Launch and Discussions
https://twitter.com/SGinIndia/status/16 ... 4130397598
Tweet from Singapore High Commission
Tweet from Singapore High Commission
I am joining the billions of people in praying for the success of the #Chandrayaan3 mission. - HC Wong
Re: Chandrayaan 3: Launch and Discussions
Scientific paper on how the landing site for CY3 was chosen - Terrain Characterisation of Potential Landing Sites for Chandrayaan-3 Lander using Orbiter High Resolution Camera (OHRC) Images
Re: Chandrayaan 3: Launch and Discussions
https://eyes.nasa.gov/dsn/dsn.htmlCanberraDSN @CanberraDSN
Antenna Deep Space Station 36 #DSS36, will later be joined by #DSS34 and other antennas around the world in supporting #Chandrayaan3 as it attempts a landing on the Moon at ~10:35pm AEST tonight
Re: Chandrayaan 3: Launch and Discussions
Ought to be sleeping, and not playing video games .... will get up in a few hours..
Meanwhile: descent orbit of 20 minutes is shown in yellow color ... and view angle can be changed.. (Not actual, but mathematically correct view..) Good night (here it is)...
Meanwhile: descent orbit of 20 minutes is shown in yellow color ... and view angle can be changed.. (Not actual, but mathematically correct view..) Good night (here it is)...
Re: Chandrayaan 3: Launch and Discussions
Meanwhile:
""Clear skies in Western Australia as we begin our first of two sessions tracking #Chandrayaan3 with this antenna today..."
""Clear skies in Western Australia as we begin our first of two sessions tracking #Chandrayaan3 with this antenna today..."
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Re: Chandrayaan 3: Launch and Discussions
Concentration on work is very poor today. I am on my 3rd coffee break already.
Re: Chandrayaan 3: Launch and Discussions
Fingers crossed. Let us see if "Somanath" and the two "Pragyans" live up to their names todayMukesh.Kumar wrote: ↑23 Aug 2023 15:29 Concentration on work is very poor today. I am on my 3rd coffee break already.
Re: Chandrayaan 3: Launch and Discussions
Yes! All the best to the other Praggyan as well, though his task is much harder I think
Re: Chandrayaan 3: Launch and Discussions
Chandrayaan 3 will not successfully soft land onlee.
Re: Chandrayaan 3: Launch and Discussions
Prabisi nagar kijiye sab kaaza
Hriday Rahkhi Kaushalpur Raja....
Heart beats increasing...cannot sit at one place.
Good luck India
Good luck ISRO
Hriday Rahkhi Kaushalpur Raja....
Heart beats increasing...cannot sit at one place.
Good luck India
Good luck ISRO
Re: Chandrayaan 3: Launch and Discussions
18 mins to powered descent
Re: Chandrayaan 3: Launch and Discussions
Hey Prabhu, raksha karna!!
Re: Chandrayaan 3: Launch and Discussions
what is the best website to see it?
Re: Chandrayaan 3: Launch and Discussions
Sad dilbu is MIA
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Re: Chandrayaan 3: Launch and Discussions
quote=fanne post_id=2598278 time=1692792159 user_id=321]
what is the best website to see it?
[/quote]
what is the best website to see it?
[/quote]
Re: Chandrayaan 3: Launch and Discussions
Chandrayaan 3 will not successfully soft land onlee.
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Re: Chandrayaan 3: Launch and Discussions
Welcome Dilbu Sir !! Power descent begun
Re: Chandrayaan 3: Launch and Discussions
live feed:
Re: Chandrayaan 3: Launch and Discussions
Chandrayaan 3 will not successfully soft land onlee.
Re: Chandrayaan 3: Launch and Discussions
20% work done, per live commentary
"Performance so far is nominal".
"Performance so far is nominal".
Re: Chandrayaan 3: Launch and Discussions
Altitude is less than 30km.
...
Now less than 28km
...
Now less than 28km
Re: Chandrayaan 3: Launch and Discussions
Youtube shows 5.5M live viewers for the ISRO live stream. It was 4M about 10 mins ago. Good to see the enthusiasm.
Re: Chandrayaan 3: Launch and Discussions
vertical velocity increasing
Re: Chandrayaan 3: Launch and Discussions
Seems that way, altitude < 20km now