Monday, May 31, 2010

checking 78

Trying to weave my way through the Washington Double Star catalog.

I found 78 Ursa Majoris:

2000 Coordinates: 13007+5622
Discoverer & Number: BU 1082
Date (first): 1889
Date (last): 2007
Number of Observations (up to 9999): 124
Position Angle (first - XXX): 76
Position Angle (last - XXX): 94
Separation (first): 1.5
Separation (last): 1.3
Magnitude of First Component: 5.02
Magnitude of Second Component: 7.88
Spectral Type (Primary/Secondary): F2V

Oh. 1.3 seconds of arc. No wonder we couldn't split it last night...

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