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HD 61699


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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 classification of intrinsic variable stars. II. The red variables of S and related types
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1972ApJ...177..489E&db_key=AST

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Observation and Astrometry data

Constellation:とも座
Right ascension:07h40m13.77s
Declination:-12°04'49.4"
Apparent magnitude:7.909
Distance:350.877 parsecs
Proper motion RA:-10.6
Proper motion Dec:-8.5
B-T magnitude:7.795
V-T magnitude:7.9

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 61699
TYCHO-2 2000TYC 5418-1129-1
USNO-A2.0USNO-A2 0750-04881368
HIPHIP 37366

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