http://www.heavens-above.com/GroundTrack.aspx

 

Another:

http://www.satflare.com/track.asp?q=37820&sid=31#TOP

Edit: This tracker shows potential landfall in South America, Africa, or Asia. At this time, not anywhere close to the US. And definitely not southern Michigan.

 

Oops...read the history wrong. Africa or Asia. South America is out.

 

?? I think Chile is the current projection.
http://www.aerospace.org/CORDSuploads/TiangongStoryboard.png

 

The decent is picking up speed. It won't be long now. Atlantic Ocean near Africa is my guess and within the next hour ..... for the 100 km height

 

?? I think Chile is the current projection.
http://www.aerospace.org/CORDSuploads/TiangongStoryboard.png

Nope. Already cleared S. America and is currently over the Atlantic at about 138km.

Edit: Sorry, I'm reading this all wrong. There is at least one more orbit to go. S. America is still in the window.

 

Nope. Already cleared S. America and is currently over the Atlantic at about 138km.

Does that really matter? Isn't the orbital period for something that low somewhere in the 90 minute range? Doesn't that mean that the current uncertainty (last I see) of ±1.7 hrs means that it could come down anywhere along the track of more than a complete orbit either sooner or later than the best guess point?

 

Nope. Already cleared S. America and is currently over the Atlantic at about 138km.

Edit: Sorry, I'm reading this all wrong. There is at least one more orbit to go. S. America is still in the window.

Cross posted with your edit.

 

Crossing the lines ....

0 N 9.3 W
9.3 N 0 E

No Emerald Shellback (US) or Royal Diamond Shellback for Tiangong 1.

 

Did anyone notice the height increased 2.5 km as it approached Asia.

 

CNN reported it fell from the sky at 8:15 Eastern time, yet the website is entertaining the idea it's still above 100 km.

 

Yeah, I saw 8:16 ET. Think that would have been west of South America in the Pacific. All of the 'tracking' sites that I was able to find were showing calculated data as if the object was going to remain in orbit. For example, Space.com was showing Tiangong actually climbing (moving toward apogee) at 8:16.

 

The problem with these Chinese space stations is that an hour after it burns up you want another one.

 

Just watched "Hidden Figures" last night, very good movie for those who haven't seen it. Introduction to NASA's first use of the IBM Computer. Plus, the insight of just how far we had to push to get a rocket into space and have it come down where we wanted it for recovery.

This thread just reminded me of how difficult it can be to know where something will or will not land eventually.

kv

 

Just watched "Hidden Figures" last night, very good movie for those who haven't seen it. Introduction to NASA's first use of the IBM Computer. Plus, the insight of just how far we had to push to get a rocket into space and have it come down where we wanted it for recovery.

This thread just reminded me of how difficult it can be to know where something will or will not land eventually.

kv

Yup, good movie.

 

Sorry, I'm reading this all wrong. There is at least one more orbit to go. S. America is still in the window.

I do not mind as long one debris hits precisely that dog barking every night at around 03.00, right here, across the street.

He as well, is who starts every day, a 15-minutes barking session by 09.00 hours. Truth to be told, all dogs in the four properties in the corner, do participate eagerly. If more debris available, please, go ahead...

 

Did anyone notice the height increased 2.5 km as it approached Asia.

I saw this as well. Is there any reason to believe the object was traversing a perfectly circular orbit, or one that was monotonically declining in altitude?

Perhaps the orbit was elliptical, with the majority of early breaking occurring at perigee?

 

I saw this as well. Is there any reason to believe the object was traversing a perfectly circular orbit, or one that was monotonically declining in altitude?

Perhaps the orbit was elliptical, with the majority of early breaking occurring at perigee?

I'm surprised it hasn't gained more attention in the media.

kv

 

No sex, no blood, no news.

 

Just watched "Hidden Figures" last night, very good movie for those who haven't seen it. Introduction to NASA's first use of the IBM Computer. Plus, the insight of just how far we had to push to get a rocket into space and have it come down where we wanted it for recovery.

This thread just reminded me of how difficult it can be to know where something will or will not land eventually.

kv

Good movie. Was a bit disappointed with some of the liberties they took to make things seem worse than they were, but most of those I'm willing to grant as reasonably legitimate poetic license in order to include relevant events within a coherent context given the limited time/space span of the movie.