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HD 16669

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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.
II-Listes et classifications d'étoiles M, S, C, trouvées dans divers champs pris aux prismes objectifs à vision directe Not Available

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Osservazione e dati astrometrici

Costellazione:	Perseo
Ascensione retta:	02^h41^m52.65^s
Declinazione:	+45Â°00'06.7"
Magnitudine apparente:	7.766
Distanza:	328.947 parsec
Moto proprio RA:	7.7
Moto proprio Dec:	-1.7
B-T magnitude:	9.945
V-T magnitude:	7.946

Cataloghi e designazioni:

Nomi esatti	(Edit)
HD 1989	HD 16669
TYCHO-2 2000	TYC 3296-2133-1
USNO-A2.0	USNO-A2 1350-02606456
HIP	HIP 12587

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