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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
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| Visual multiples. VIII - 1000 MK types
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| Space astrophysical observatory 'Orion-2'
The paper presents a detailed description of the Orion 2 spaceobservatory, its systems, instruments, and operational modes.Operational principles of the observatory in orbit are outlined, and thescientific devices are discussed, including the Meniscus telescope,slitless diffraction spectrographs, and X-ray chambers. The design ofthe observatory is described along with its construction, stellarsensors, solar transducer, and sighting system. Functional schemes arepresented for the astronavigation system, six-wheel stabilization, andelectrical system. The procedure for conducting experiments is outlined,photographic materials used during the mission are described, and groundtests are summarized. Some results obtained by the observatory arediscussed, especially UV spectrograms of hot and cold stars.
| Interesting ultraviolet star discovered by Orion-2
Not Available
| Mikrometermessungen von Doppelsternen. VII
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1970A&AS....1..393H&db_key=AST
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Datos observacionales y astrométricos
| Constelación: | Cochero |
| Ascensión Recta: | 05h22m11.04s |
| Declinación: | +45°04'53.9" |
| Magnitud Aparente: | 7.719 |
| Distancia: | 961.538 parsecs |
| Movimiento Propio en Ascensión Recta: | -1.3 |
| Movimiento Propio en Declinación: | -2.1 |
| B-T magnitude: | 7.691 |
| V-T magnitude: | 7.717 |
Catálogos y designaciones:
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