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Relative position of Rosetta and Steins in target plane - 28 August 2008

Relative position of Rosetta and Steins in target plane - 28 August 2008


Date: 28 August 2008
Satellite: Rosetta
Depicts: Rosetta - Steins fly-by target plane
Copyright: ESA

This plot shows the situation in the target plane for the Rosetta fly-by of asteroid Steins. It is based on the optical navigation data as well as all radiometric data (spacecraft tracking) and ground-based astrometric data up to and including 28 August 2008.

Ellipses indicate 3-sigma error circles around Rosetta's determined positions (crosses) relative to asteroid Steins (at the origin, direction indicated with arrow). The target relative position of Rosetta for the Steins fly-by is marked in green and is 800 km from asteroid Steins.

The plot shows two colour-coded positions, each derived with progressively more input from the optical navigation campaign with Rosetta's on-board cameras. 

Orange The orange cross and associated dashed 3-sigma error ellipse is the solution from 25 August (see related images)
Magenta The magenta cross and associated dashed 3-sigma error ellipse is the solution from 28 August.

On 28 August 2008, Rosetta's final projected relative position was 32.7 km from the target and too close to Steins. If there would be no further change to Rosetta's trajectory, the spacecraft would pass asteroid Steins at about 787.1 km (magenta cross).

The dashed red line running through the target point shows the contour 800 km from Steins.

Last Update: 1 September 2019
10-Nov-2024 02:38 UT

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