At 11:39 29/06/03, Praveen Bharadhwaj wrote: >Pls. forgive the slightly off-topic nature of the question, but what would >be the earth's magnitude value as viewed from a geosynchronous orbit? Aller Astrophysical Quantities gives the absolute magnitude of Earth as -4. This is as seen from the Sun. Modify this to account for the smaller distance you require gives a brightness increase of around 17-18 magnitude, so the result is -21 to -22. This is of course for local noon at the geosat subsatellite point. Tony Beresford ----------------------------------------------------------------- To unsubscribe from SeeSat-L, send a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@satobs.org List archived at http://www.satobs.org/seesat/seesatindex.html
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