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HD 188929


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Third preliminary catalogue of stars observed with the photoelectric astrolabe of the Beijing Astronomical Observatory.
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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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观测天体数据

星座:狐狸座
右阿森松:19h56m49.78s
赤纬:+23°46'36.5"
视星:6.785
距离:88.339 天文距离
右阿森松适当运动:41.3
赤纬适当运动:38.2
B-T magnitude:7.15
V-T magnitude:6.816

目录:
适当名称   (Edit)
HD 1989HD 188929
TYCHO-2 2000TYC 2140-3053-1
USNO-A2.0USNO-A2 1125-14704835
HIPHIP 98154

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