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HD 94622


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New Elements for 80 Eclipsing Binaries IV.
This research presents new elements for 80 eclipsing binaries found withthe help of the ASAS-3, Hipparcos and NSVS databases.

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.

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Observation and Astrometry data

Constellation:Ιστία
Right ascension:10h54m43.62s
Declination:-45°36'10.2"
Apparent magnitude:9.497
Proper motion RA:-26.1
Proper motion Dec:14.3
B-T magnitude:9.814
V-T magnitude:9.524

Catalogs and designations:
Proper Names
HD 1989HD 94622
TYCHO-2 2000TYC 8199-954-1
USNO-A2.0USNO-A2 0375-12474077
HIPHIP 53357

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