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HD 45324


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New periodic variables from the Hipparcos epoch photometry
Two selection statistics are used to extract new candidate periodicvariables from the epoch photometry of the Hipparcos catalogue. Theprimary selection criterion is a signal-to-noise ratio. The dependenceof this statistic on the number of observations is calibrated usingabout 30000 randomly permuted Hipparcos data sets. A significance levelof 0.1 per cent is used to extract a first batch of candidate variables.The second criterion requires that the optimal frequency be unaffectedif the data are de-trended by low-order polynomials. We find 2675 newcandidate periodic variables, of which the majority (2082) are from theHipparcos`unsolved' variables. Potential problems with theinterpretation of the data (e.g. aliasing) are discussed.

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:Großer Hund
Right ascension:06h26m09.36s
Declination:-15°07'12.4"
Apparent magnitude:8.886
Distance:1369.863 parsecs
Proper motion RA:-1.2
Proper motion Dec:1.1
B-T magnitude:8.914
V-T magnitude:8.889

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 45324
TYCHO-2 2000TYC 5947-340-1
USNO-A2.0USNO-A2 0675-03139577
HIPHIP 30625

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