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HD 93074


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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.

The 74th Special Name-list of Variable Stars
We present the Name-list introducing GCVS names for 3153 variable starsdiscovered by the Hipparcos mission.

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Observation and Astrometry data

Constellation:Ursa Major
Right ascension:10h46m07.71s
Declination:+59°03'39.1"
Apparent magnitude:9.232
Proper motion RA:-2.2
Proper motion Dec:-5.5
B-T magnitude:11.202
V-T magnitude:9.395

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 93074
TYCHO-2 2000TYC 3829-486-1
USNO-A2.0USNO-A2 1425-07549160
HIPHIP 52663

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