Re: Estimated Orion EFT-1 Elements

From: bahlsd--- via Seesat-l <seesat-l_at_satobs.org>
Date: Sun, 30 Nov 2014 16:14:30 -0800
Mission timeline has Orion entry interface (beginning of heating at 400,000 ft, ~121 km, altitude) occurring ~4:13 after launch.  For an on-time launch that is about 16:18 UTC, a few minutes after set from Hawaii.

I'm not sure about the second stage, but I suspect it's reentry will also be out of view from Hawaii.

Having said that, the spacecraft and second stage will be in sunlight, so if it is dark enough outside at that time (about 35-45 minutes before sunrise) there might be an opportunity for visual observations of them before they set.

Daryl
"Old astrodynamicists never die, they just become more eccentric."
Sent from my iPad 

> On Nov 30, 2014, at 3:51 PM, ronlee_at_pcisys.net wrote:
> 
> Thanks for the Hawaii look angles.  Do you have a feel for when
> re-entry heating will occur?  If in shadow, that might be visible.
> 
> If during early daylight, maybe the brightness of the re-entry or
> breakup of the second stage could still be visible.
> 
> Ron Lee
> 

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Received on Sun Nov 30 2014 - 18:15:00 UTC

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