Re: Tianwen-1 Mars orbit

From: Scott Tilley via Seesat-l <seesat-l_at_satobs.org>
Date: Mon, 17 May 2021 10:57:20 -0700
Further to my last here's an initial estimate of the relay orbit of 
Tianwen-1 based on published data and a guess at the periapsis time of 
the burn to change the orbit which will not be correct.

Later today I'll fit it to Doppler and correct it.

https://twitter.com/coastal8049/status/1394350456982237184

Epoch = 17 May 2021 00:00:00 UTC

CoordinateSystem = MarsInertial

DisplayStateType = Keplerian

SMA = 9492.6666120816

ECC = 0.6162045788699853

INC = 86.9

RAAN = 112.2333081866489

AOP = 168.9402158894392

TA = 0.0

Regards,

Scott Tilley


On 2021-05-17 7:58 a.m., Leo Enright via Seesat-l wrote:
> Is there some way I can display Tianwen-1's orbit on Celestia or 
> similar? I don't expect there are ephimeredes yet for it's new relay 
> orbit,  but going forward I'd like to be able to see when it or Mars 
> Express are line-of-sight with the Zhurong rover.  Any advice 
> appreciated on what's the best software and any likely sources of 
> current  orbital elements.
>
> Leo Enright
>
> Dublin
>
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Received on Mon May 17 2021 - 12:58:18 UTC

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