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HD 710


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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.

Radial-velocity measurements. V - Ground support of the HIPPARCOS satellite observation program
The paper presents data on 1070 radial velocity measurements of starsdistributed in 39 fields measuring 4 deg x 4 deg. The PPO series ofFehrenbach et al. (1987) and Duflot et al. (1990) is continued using theFehrenbach objective prism method.

Accuracy of two-dimensional spectral classes derived through DDO photometry.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1977AJ.....82..832Y&db_key=AST

Magnetic Fields of the A-Type Stars.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1958ApJ...128..228B&db_key=AST

General magnetic fields in the Sun and stars (Report on progress of astronomy)
Abstract image available at:http://adsabs.harvard.edu/abs/1953MNRAS.113..357B

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Datos observacionales y astrométricos

Constelación:Casiopea
Ascensión Recta:00h11m41.83s
Declinación:+54°20'07.8"
Magnitud Aparente:8.096
Distancia:235.294 parsecs
Movimiento Propio en Ascensión Recta:9.1
Movimiento Propio en Declinación:-8.8
B-T magnitude:8.358
V-T magnitude:8.118

Catálogos y designaciones:
Nombres Propios
HD 1989HD 710
TYCHO-2 2000TYC 3652-311-1
USNO-A2.0USNO-A2 1425-00282636
HIPHIP 949
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