Author Topic: Fobos-Grunt EOM Re-Entry Latest  (Read 235079 times)

Offline ugordan

  • Senior Member
  • *****
  • Posts: 8562
    • My mainly Cassini image gallery
  • Liked: 3631
  • Likes Given: 775
Re: LIVE: Fobos-Grunt EOM Re-Entry Latest
« Reply #180 on: 01/15/2012 04:08 pm »
We won't know it real time. The best we can hope for right now, IMHO, is observers along the ground track reporting if they see any fireballs or not.
« Last Edit: 01/15/2012 04:09 pm by ugordan »

Offline jcm

  • Senior Member
  • *****
  • Posts: 3701
  • Jonathan McDowell
  • Somerville, Massachusetts, USA
    • Jonathan's Space Report
  • Liked: 1405
  • Likes Given: 816
Re: LIVE: Fobos-Grunt EOM Re-Entry Latest
« Reply #181 on: 01/15/2012 04:09 pm »
Then how are we going to know when this re-enters?

When it fails to appear to the radars the next orbit round.

Or, possibly, if we get visual reports if it comes down over land
-----------------------------

Jonathan McDowell
http://planet4589.org

Offline InvalidAttitude

  • Full Member
  • *
  • Posts: 119
  • Liked: 0
  • Likes Given: 3
Re: LIVE: Fobos-Grunt EOM Re-Entry Latest
« Reply #182 on: 01/15/2012 04:10 pm »
Then how are we going to know when this re-enters?

Will the NORAD publicly announce it?

Offline kevin-rf

  • Elite Veteran
  • Senior Member
  • *****
  • Posts: 8823
  • Overlooking the path Mary's little Lamb took..
  • Liked: 1318
  • Likes Given: 306
Re: LIVE: Fobos-Grunt EOM Re-Entry Latest
« Reply #183 on: 01/15/2012 04:10 pm »
We won't know it real time. The best we can hope for right now, IMHO, is observers along the ground track reporting if they see any fireballs or not.

Unless an NSF'r see's it and posts pictures in real time. Chris you really need to talk to the Russian's about getting a better live feed ;)
If you're happy and you know it,
It's your med's!

Offline jcm

  • Senior Member
  • *****
  • Posts: 3701
  • Jonathan McDowell
  • Somerville, Massachusetts, USA
    • Jonathan's Space Report
  • Liked: 1405
  • Likes Given: 816
Re: LIVE: Fobos-Grunt EOM Re-Entry Latest
« Reply #184 on: 01/15/2012 04:11 pm »
Then how are we going to know when this re-enters?

When it fails to appear to the radars the next orbit round.

Or, possibly, if we get visual reports if it comes down over land

And then, eventually STRATCOM may bother to announce that the radars have stopped seeing it...
for UARS, it was quite a while before there was confirmation that it was down
-----------------------------

Jonathan McDowell
http://planet4589.org

Offline jcm

  • Senior Member
  • *****
  • Posts: 3701
  • Jonathan McDowell
  • Somerville, Massachusetts, USA
    • Jonathan's Space Report
  • Liked: 1405
  • Likes Given: 816
Re: LIVE: Fobos-Grunt EOM Re-Entry Latest
« Reply #185 on: 01/15/2012 04:12 pm »
We won't know it real time. The best we can hope for right now, IMHO, is observers along the ground track reporting if they see any fireballs or not.

Unless an NSF'r see's it and posts pictures in real time. Chris you really need to talk to the Russian's about getting a better live feed ;)

And Ted Molczan really needs to upgrade the hobbyist network with a bunch
of big-ass radars.
-----------------------------

Jonathan McDowell
http://planet4589.org

Offline Chris Bergin

Re: LIVE: Fobos-Grunt EOM Re-Entry Latest
« Reply #186 on: 01/15/2012 04:13 pm »
Then how are we going to know when this re-enters?

When it fails to appear to the radars the next orbit round.

Or, possibly, if we get visual reports if it comes down over land

We won't know it real time. The best we can hope for right now, IMHO, is observers along the ground track reporting if they see any fireballs or not.

Copy. Thank goodness we have experts on here, or some of us (like me!) would have been watching that track all day ;)

Still kinda apt to follow it on the track as it's clearly into its last moments, but everyone keep an eye out for observations/confirmations.
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline Chris Bergin

Re: LIVE: Fobos-Grunt EOM Re-Entry Latest
« Reply #187 on: 01/15/2012 04:15 pm »
Now over the Pacific (FWIW).
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline Chris Bergin

Re: LIVE: Fobos-Grunt EOM Re-Entry Latest
« Reply #188 on: 01/15/2012 04:15 pm »
@PhG_Reentry Phobos Grunt
China, South Korea, southern tip of Japan, #PhobosGrunt re-entry may be imminent, good time to look up over the next 20 minutes
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline stu_boy

  • Member
  • Posts: 3
  • Liked: 0
  • Likes Given: 114
Re: LIVE: Fobos-Grunt EOM Re-Entry Latest
« Reply #189 on: 01/15/2012 04:16 pm »
Following it on my iPad satellite tracker app, it's descended from 139km to 134km quite rapidly. It's south of Japan now over the Pacific.

Offline jacqmans

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 21808
  • Houten, The Netherlands
  • Liked: 8704
  • Likes Given: 321
Re: LIVE: Fobos-Grunt EOM Re-Entry Latest
« Reply #190 on: 01/15/2012 04:17 pm »
Jacques :-)

Offline BrunoQuiocca

  • Member
  • Posts: 19
  • Brazil
  • Liked: 0
  • Likes Given: 0
Re: LIVE: Fobos-Grunt EOM Re-Entry Latest
« Reply #191 on: 01/15/2012 04:18 pm »
I've beem quiet all this time, but always reading the topic, as i didn't had anything to contribute. But now I'm ready here in South of Brazil. 24,97S 53,47W. Eyes on the sky...

Offline rickl

  • Full Member
  • ****
  • Posts: 899
  • Pennsylvania, USA
  • Liked: 146
  • Likes Given: 150
Re: LIVE: Fobos-Grunt EOM Re-Entry Latest
« Reply #192 on: 01/15/2012 04:18 pm »

for UARS, it was quite a while before there was confirmation that it was down

I remember that.  There were all kinds of conflicting reports for awhile. 

I was on a non-space forum, and commenters were saying things like, "Those people don't know what they're talking about.  They have no idea where it will come down."

Back to Phobos-Grunt, it looks like perigee on this orbit will be over Brazil or the Atlantic.
The Space Age is just starting to get interesting.

Offline Chris Bergin

Re: LIVE: Fobos-Grunt EOM Re-Entry Latest
« Reply #193 on: 01/15/2012 04:19 pm »
I've beem quiet all this time, but always reading the topic, as i didn't had anything to contribute. But now I'm ready here in South of Brazil. 24,97S 53,47W. Eyes on the sky...

Hey Bruno - thanks!
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline jacqmans

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 21808
  • Houten, The Netherlands
  • Liked: 8704
  • Likes Given: 321
Re: LIVE: Fobos-Grunt EOM Re-Entry Latest
« Reply #194 on: 01/15/2012 04:22 pm »
Jacques :-)

Offline Chris Bergin

Re: LIVE: Fobos-Grunt EOM Re-Entry Latest
« Reply #195 on: 01/15/2012 04:23 pm »
Going to swing north of New Zealand. I know we have lots of Kiwis on here, so (providing it's possible) check observations.
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline Longhorn John

  • Regular
  • Full Member
  • ****
  • Posts: 1572
  • Liked: 63
  • Likes Given: 130
Re: LIVE: Fobos-Grunt EOM Re-Entry Latest
« Reply #196 on: 01/15/2012 04:24 pm »
We might get first confirmation if Bruno can't find FG in the sky when it passes over him?

Offline asdert

  • Member
  • Posts: 63
  • Liked: 5
  • Likes Given: 1
Re: LIVE: Fobos-Grunt EOM Re-Entry Latest
« Reply #197 on: 01/15/2012 04:25 pm »
Going to swing north of New Zealand. I know we have lots of Kiwis on here, so (providing it's possible) check observations.

Even if it doesn't burn yet, it might be visible. It is just sunrise there.

Offline ugordan

  • Senior Member
  • *****
  • Posts: 8562
    • My mainly Cassini image gallery
  • Liked: 3631
  • Likes Given: 775
Re: LIVE: Fobos-Grunt EOM Re-Entry Latest
« Reply #198 on: 01/15/2012 04:25 pm »
We might get first confirmation if Bruno can't find FG in the sky when it passes over him?

It's daytime over there so not very likely.

Offline ChrisC

  • Veteran
  • Senior Member
  • *****
  • Posts: 2302
  • Liked: 1689
  • Likes Given: 1922
Re: LIVE: Fobos-Grunt EOM Re-Entry Latest
« Reply #199 on: 01/15/2012 04:26 pm »
Following it on my iPad satellite tracker app, it's descended from 139km to 134km quite rapidly. It's south of Japan now over the Pacific.

Just to be crystal clear, for those of you new to this or not reading the last two pages, any online tracker page or app or whatever IS NOT GIVING YOU LIVE DATA.  It's taking the orbital data snapshot from the recent past (google "TLE") and predicting where it will be.  The altitude will be wrong for sure, because the TLE had the object in orbit, and it's clearly coming down out of orbit now!

The only people who know where it really is right now are A) at military radar installations and B) on the ground watching it fly over.  And P-G is in daylight now so that makes spotting it from the ground nearly impossible.
« Last Edit: 01/15/2012 04:29 pm by ChrisC »
PSA #1:  Suppress forum auto-embed of Youtube videos by deleting leading 'www.' (four characters) in YT URL; useful when linking text to YT, or just to avoid bloat.
PSA #2:  Users who particularly annoy you can be suppressed in forum view via Modify Profile -> Buddies / Ignore List.  *** See profile for two more NSF forum tips. ***

Tags:
 

Advertisement NovaTech
Advertisement Northrop Grumman
Advertisement
Advertisement Margaritaville Beach Resort South Padre Island
Advertisement Brady Kenniston
Advertisement NextSpaceflight
Advertisement Nathan Barker Photography
0