Home     Getting Started     To Survive in the Universe    
Inhabited Sky
    News@Sky     Astro Photo     The Collection     Forum     Blog New!     FAQ     Press     Login  

HD 225114


Contents

Images

Upload your image

DSS Images   Other Images


Related articles

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.

Miscellaneous spectroscopic notes
Results of slit-spectrograph observations are reported for approximately260 stars. The data presented range from recognition of many new Ap, Am,and other unusual stars to H-alpha observations of early-typesupergiants and Be stars. The material discussed was obtained over thepast 40 years at a number of U.S. observatories and at the DominionAstrophysical Observatory in Victoria, B.C.

Submit a new article


Related links

  • - No Links Found -
Submit a new link


Member of following groups:


Observation and Astrometry data

Constellation:ケフェウス座
Right ascension:00h03m38.11s
Declination:+70°18'21.7"
Apparent magnitude:8.096
Distance:342.466 parsecs
Proper motion RA:9.6
Proper motion Dec:-0.5
B-T magnitude:8.078
V-T magnitude:8.095

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 225114
TYCHO-2 2000TYC 4298-755-1
USNO-A2.0USNO-A2 1575-00035085
HIPHIP 292

→ Request more catalogs and designations from VizieR