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TYC 3187-847-1


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The fourth meridian catalog of Besancon Observatory
The catalog presented gives differential meridian positions for 670F-type stars between plus 15 and plus 45 deg declination. The positionsare reduced to the equinox of 1950.0 without proper motions; 333 FK4stars were used as reference stars. A minimum of three and an average offive transits of each program star were observed photoelectrically usinga Gautier transit circle and a Hog grid. The internal accuracy ofindividual measurements is shown to range from 0.013 sec in rightascension and 0.30 arcsec in declination for brighter stars under betterobserving conditions to 0.020 sec in right ascension and 0.38 arcsec indeclination for fainter stars under worse conditions. The standarderrors were applied to compute weighted mean positions, mean epochs, andunweighted means for the program stars. Mean corrections for 283 FK4stars are also provided.

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Observation and Astrometry data

Constellation:Schwan
Right ascension:21h35m39.70s
Declination:+40°08'04.6"
Apparent magnitude:8.174
Distance:160.772 parsecs
Proper motion RA:18.3
Proper motion Dec:17.2
B-T magnitude:8.677
V-T magnitude:8.216

Catalogs and designations:
Proper Names   (Edit)
TYCHO-2 2000TYC 3187-847-1
USNO-A2.0USNO-A2 1275-16074031
HIPHIP 106614

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