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HD 197954


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Artículos relacionados

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 velocities of southern stars obtained with the photoelectric scanner CORAVEL. III - 790 late-type bright stars
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1985A&AS...59...15A&db_key=AST

Final catalogue of 229 photometric standards in UBV system near the selected areas 1-115
Not Available

Photoelectric radial velocities. V. 69 southern HR stars.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1972MNRAS.155..449G&db_key=AST

The corrected magnitudes and colours of 278 stars near S.A. 1-139 in the UBV system
Not Available

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Datos observacionales y astrométricos

Constelación:Acuario
Ascensión Recta:20h47m03.60s
Declinación:-02°29'12.0"
Magnitud Aparente:6.27
Distancia:241.546 parsecs
Movimiento Propio en Ascensión Recta:-20.1
Movimiento Propio en Declinación:-20.8
B-T magnitude:8.358
V-T magnitude:6.452

Catálogos y designaciones:
Nombres Propios
HD 1989HD 197954
TYCHO-2 2000TYC 5182-2292-1
USNO-A2.0USNO-A2 0825-18705397
BSC 1991HR 7946
HIPHIP 102561
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