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HD 255138


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Equatorial coordinates of double and multiple star components measured on GPO astrographic plates
Equatorial coordinates are given for some of the multiple starcomponents having incomplete or inconsistent information in the IndexCatalog of Visual Double Stars. Two photographic plates were taken foreach system with incomplete or inconsistent information using the GPOastrograph. The plate measurement and reduction techniques used aredescribed.

Photoelectric measurements of lunar occultations. VIII
Photoelectric timings are reported for 276 lunar occultation eventswhich were observed between March 1975 and February 1976. The timings(in UTC) are based on Loran G equipment of a lunar laser-ranging groupor on WWV signals. Angular diameters are determined for HR 5301, HD176124, Chi-1-Orionis, and HR 601. Twenty cases of possible or actualdouble stars, including Beta Capricorni, are noted along with oneprobable triple system (51 Piscium). Several technical and computationaldifficulties encountered in this program are discussed.

Mesures d'étoiles doubles visuelles
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1970A&AS....3...71M&db_key=AST

Mesures d'étoiles doubles faites au réfracteur de 38 cm de l'Observatoire de Nice
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Datos observacionales y astrométricos

Constelación:Orión
Ascensión Recta:06h19m45.87s
Declinación:+20°24'57.4"
Magnitud Aparente:9.246
Movimiento Propio en Ascensión Recta:10.1
Movimiento Propio en Declinación:-27.2
B-T magnitude:9.972
V-T magnitude:9.306

Catálogos y designaciones:
Nombres Propios   (Edit)
HD 1989HD 255138
TYCHO-2 2000TYC 1323-585-1
USNO-A2.0USNO-A2 1050-03335558
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