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HD 157703


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Observations of double stars and new pairs. XV
The study reports visual and photographic measures listed for 1150 pairsobtained in the time frame 1989.91-1992.15, including 221 new doublestars. Magnitudes were estimated for a part of the objects, especiallythe fainter ones. Plate orientations were calculated from field stars ofknown positions and were precessed to the epoch; numbers of nights andof measured exposures are given. Reobservation of faint, neglected pairsreveal many corrections to the data from the old discovery lists.

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Observation and Astrometry data

Constellation:Ophiucus
Right ascension:17h24m30.99s
Declination:+09°00'37.0"
Apparent magnitude:9.693
Proper motion RA:-2.5
Proper motion Dec:11.3
B-T magnitude:10.33
V-T magnitude:9.746

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 157703
TYCHO-2 2000TYC 991-181-1
USNO-A2.0USNO-A2 0975-09165086

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