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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

Visual multiples. VIII - 1000 MK types
A total of 1000 new classifications are given for stars brighter than B= 8.0 mag in the Aitken double star catalog. The classificationssupplement 865 classifications obtained in 1981 and 1984. Among thenewly discovered stars are 12 new Ap stars, eight Lambda Bootis stars,one Ba II star, and 60 Am stars. A detailed list of the newclassifications is given.

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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Dades d'Observació i Astrometria

Constel·lació:Auriga
Ascensió Recta:05h22m11.04s
Declinació:+45°04'53.9"
Magnitud Aparent:7.719
Distancia:961.538 parsecs
Moviment propi RA:-1.3
Moviment propi Dec:-2.1
B-T magnitude:7.691
V-T magnitude:7.717

Catàlegs i designacions:
Noms Propis   (Edit)
HD 1989HD 34788
TYCHO-2 2000TYC 3358-1973-1
USNO-A2.0USNO-A2 1350-05698160
HIPHIP 25081

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