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HD 56995


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New Elements for 54 Eclipsing Binaries
This research presents new elements for 54 eclipsing binaries foundusing data from the ASAS-3, Hipparcos and NSVS databases. Some of thesystems studied are new and others are confirmed or had wrong elementsin the literature. The discovery of apsidal motion in TZ Pyx ispresented and an identification problem with CPD-41 7746 in NGC 6231 isaddressed. Conspicuous BE-variability superposed to eclipsing variationsis discovered in HD 61407.

Absolute proper motions of open clusters. I. Observational data
Mean proper motions and parallaxes of 205 open clusters were determinedfrom their member stars found in the Hipparcos Catalogue. 360 clusterswere searched for possible members, excluding nearby clusters withdistances D < 200 pc. Members were selected using ground basedinformation (photometry, radial velocity, proper motion, distance fromthe cluster centre) and information provided by Hipparcos (propermotion, parallax). Altogether 630 certain and 100 possible members werefound. A comparison of the Hipparcos parallaxes with photometricdistances of open clusters shows good agreement. The Hipparcos dataconfirm or reject the membership of several Cepheids in the studiedclusters. Tables 1 and 2 are only available in electronic form at theCDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html

Walraven photometry of nearby southern OB associations
Homogeneous Walraven (VBLUW) photometry is presented for 5260 stars inthe regions of five nearby southern OB associations: Scorpio Centaurus(Sco OB2), Orion OB1, Canis Major OB1, Monoceros OB1, and Scutum OB2.Derived V and (B - V) in the Johnson system are included.

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Observation and Astrometry data

Constellation:おおいぬ座
Right ascension:07h18m21.94s
Declination:-24°51'11.9"
Apparent magnitude:8.883
Distance:1666.667 parsecs
Proper motion RA:-0.5
Proper motion Dec:2.2
B-T magnitude:8.716
V-T magnitude:8.87

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 56995
TYCHO-2 2000TYC 6541-3890-1
USNO-A2.0USNO-A2 0600-05664778
HIPHIP 35370

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