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HD 15461


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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.

Catalogue of proper motions in the declination of stars of the Moscow zenith zone.
Not Available

2000 A UV imaging of a 6 deg diameter field around the H and Chi Persei double cluster
A stellar field centered close to the h and Chi per double cluster hasbeen observed at 2000 A by the stratospheric balloon-born telescope ofthe SCAP-2000 program. It is shown that the prevailing extinction lawproduces greater extinction at 1965 A than is predicted by the meanextinction law. The results suggest the presence of an H2 cloud in frontof h and Chi Per in the second absorbing layer and in the local arm. Agroup of hot stars centered at the same distance as the molecular cloudmay form an association of OB stars in the local arm.

UBV Photometry of Stars whose Positions are Accurately Known
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1984A&AS...57..357O&db_key=AST

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Datos observacionales y astrométricos

Constelación:Perseo
Ascensión Recta:02h31m26.09s
Declinación:+55°59'09.3"
Magnitud Aparente:9.394
Movimiento Propio en Ascensión Recta:21.4
Movimiento Propio en Declinación:-12.9
B-T magnitude:9.73
V-T magnitude:9.422

Catálogos y designaciones:
Nombres Propios   (Edit)
HD 1989HD 15461
TYCHO-2 2000TYC 3691-437-1
USNO-A2.0USNO-A2 1425-03543982
HIPHIP 11730

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