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HD 110899


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Two-colour photometry for 9473 components of close Hipparcos double and multiple stars
Using observations obtained with the Tycho instrument of the ESAHipparcos satellite, a two-colour photometry is produced for componentsof more than 7 000 Hipparcos double and multiple stars with angularseparations 0.1 to 2.5 arcsec. We publish 9473 components of 5173systems with separations above 0.3 arcsec. The majority of them did nothave Tycho photometry in the Hipparcos catalogue. The magnitudes arederived in the Tycho B_T and V_T passbands, similar to the Johnsonpassbands. Photometrically resolved components of the binaries withstatistically significant trigonometric parallaxes can be put on an HRdiagram, the majority of them for the first time. Based on observationsmade with the ESA Hipparcos satellite.

Measurements of double stars 1993.67 - 1998.13
624 Micrometer Measurements of 224 pairs with a 32.5 cm Cassegrain, 719Measurements of 310 double stars with a 360 mm Newtonian are given.Tables 1 to 4 are available in electronic form only at the CDS130.79.128.5 or via http://cdsweb.u-strasbg.fr/Abstract.html

The masses of stars above the main sequence.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1969AJ.....74..689S&db_key=AST

Mesures d'étoiles doubles faites à l'Observatoire de Paris
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Mesures d'Etoiles Doubles faites au Réfracteur de 38 cm. de l'Observatoire de Nice.
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Observation and Astrometry data

Constellation:Virgo
Right ascension:12h45m21.08s
Declination:+03°31'28.0"
Apparent magnitude:8.998
Distance:214.592 parsecs
Proper motion RA:-38.9
Proper motion Dec:9.3
B-T magnitude:9.525
V-T magnitude:9.042

Catalogs and designations:
Proper Names
HD 1989HD 110899
TYCHO-2 2000TYC 293-1018-1
USNO-A2.0USNO-A2 0900-07227003
HIPHIP 62237
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