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HD 100893


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SANTIAGO 91, a right ascension catalogue of 3387 stars (equinox J2000).
The positions in right ascension of 3387 stars belonging to the Santiago67 Catalogue, observed with the Repsold Meridian Circle at Cerro Calan,National Astronomical Observatory, during the period 1989 to 1994, aregiven. The average mean square error of a position, for the wholeCatalogue, is +/-0.009 s. The mean epoch of the catalogue is 1991.84.

Radial velocities of southern stars obtained with the photoelectric scanner CORAVEL. III - 790 late-type bright stars
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1985A&AS...59...15A&db_key=AST

Close visual binaries. I - MK classifications
Each component of 170 close visual binaries has been classified with newprocedures for controlling contamination problems. These classificationsare presented and are shown to be on the MK system. Two sources of areascanner UBV photometry were compared in order to establish homogeneousphotometric as well as spectroscopic data. From a consideration ofsystematic errors in the V magnitude difference (Delta V) betweencomponents the photometry of Hurly and Warner (1983) is to be preferred.Absolute magnitudes for each binary are derived from Delta V via atested MK - M(v) map.

Area Scanner Observations of Close Visual Double Stars - Part Two - Results for 153 Southern Stars
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1983MNRAS.202..761H&db_key=AST

Photometric differences of magnitude in southern double stars
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1980A&A....84..108F&db_key=AST

Combined-light UBV Photometry of 103 Bright Southern Visual Doubles
Not Available

Photoelectric determination of the colors of 286 stars south of declination -15 degrees.
Not Available

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Osservazione e dati astrometrici

Costellazione:Idra
Ascensione retta:11h36m35.00s
Declinazione:-33°34'12.0"
Magnitudine apparente:5.74
Distanza:108.108 parsec
Moto proprio RA:31.2
Moto proprio Dec:-29.7
B-T magnitude:7.232
V-T magnitude:6.014

Cataloghi e designazioni:
Nomi esatti
HD 1989HD 100893
TYCHO-2 2000TYC 7220-1534-1
USNO-A2.0USNO-A2 0525-14278971
BSC 1991HR 4469
HIPHIP 56620
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