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BY Cassiopeiae

BY Cassiopeiae Facts

BY Cassiopeiae's Alternative Names

HIP8312 is the reference name for the star in the Hipparcos Star Catalogue.

BY Cassiopeiae has alternative name(s) :- BY Cas, BY Cas.

BD number is the number that the star was filed under in the Durchmusterung or Bonner Durchmusterung, a star catalogue that was put together by the Bonn Observatory between 1859 to 1903. The star's BD Number is BD+60 348.

More details on objects' alternative names can be found at Star Names .

Source of Information

The source of the information if it has a Hip I.D. is from Simbad, the Hipparcos data library based at the University at Strasbourg, France. Hipparcos was a E.S.A. satellite operation launched in 1989 for four years. The items in red are values that I've calculated so they could well be wrong. Information regarding Metallicity and/or Mass is from the E.U. Exoplanets. The information was obtained as of 12th Feb 2017.

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Additional BY Cassiopeiae Facts and Figures

Visual Facts


Primary / Proper / Traditional NameBY Cassiopeiae
Alternative NamesBY Cas, HIP 8312, BD+60 348, BY Cas
Constellation's Main StarNo
Multiple Star SystemYes
Star TypeVariable Star
GalaxyMilky Way
ConstellationCassiopeia
Galactic Latitude-0.73 degrees
Galactic Longitude129.55 degrees
Radial Velocity-58.70 ± 0.50 km/s

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Variable Star Details


Variable Star ClassPulsating
Variable Star TypeDelta Cepheid
Mean Variability Period in Days3.222
Variable Magnitude Range (Brighter - Dimmer)10.355 - 10.738

Sources and Links


SIMBAD SourceLink

Multi-Star System

The star has been identified as being a multi-star system, one in which there is at least one star in close orbit to another star or two or more stars orbiting a central point. The stars may be of equal mass, unequal mass where one star is stronger than the other or be in groups orbiting a central point which doesn't necessarily have to be a star. More information can be found on my dedicated multiple star systems page. The source of the info is Simbad. The file is dated 2000 so any differences between this and any other source will be down to the actual source from where the information came from.


Proper Motion mas/yr
H.D. IdB.D. IdStar CodeMagnitudeR.A.Dec.SpectrumColourYear
+60 348.0A10.800001.000002.00000F6Yellow/White
B12.400001.000002.000001991

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