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HD 259264


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Catalog of BV magnitudes and spectral classes of 6000 stars
The present catalog, compiled at the Abastumani Observatory, contains BVmagnitudes and spectral classes of about 6000 stars up to V(lim) = 13.0min five circular areas of 18 sq deg located near the salactic-equatorplane. The catalog is intended for star-statistics studies ofstar-formation regions.

Ultraviolet and optical studies of binaries with luminous cool primaries and hot companions. II - BVRI observations
Johnson system BVRI measurements are presented for 117 stars, most ofthem with no previous R and I photometry and many with no previous B andV. The prime objects for measurement are unresolved or nearly unresolvedbinaries containing a late-type giant or supergiant and an early-typecompanion. Other objects on the program include suspected binaries andother F-G giants and supergiants lacking at least R and I magnitudes.The variable F and G supergiants 1 Mon, 89 Her, HR 7308, HR 8157, HR8752, and rho-Cas and the eclipsing systems W Ser and ST Aqr wereobserved; HR 8752 showed significant dimming and cooling over 125 days.Several of Halliwell's (1979) candidates for nearby stars were measured.

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Tekboynuz
Sað Açýklýk:06h32m35.98s
Yükselim:+09°29'28.9"
Görünürdeki Parlaklýk:9
Uzaklýk:326.797 parsek
özdevim Sað Açýklýk:1.6
özdevim Yükselim:-1.3
B-T magnitude:9.537
V-T magnitude:9.045

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
HD 1989HD 259264
TYCHO-2 2000TYC 737-433-1
USNO-A2.0USNO-A2 0975-03398235
HIPHIP 31184

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