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BQ Serpentis

BQ Serpentis Facts

  • BQ Serpentis is a pulsating variable star that can be located in the constellation of Serpens. The description is based on the spectral class.
  • BQ Serpentis is not part of the constellation outline but is within the borders of the constellation.
  • The star is calculated at being about 3545.25 light years away from us. Distance

BQ Serpentis's Alternative Names

HIP91201 is the reference name for the star in the Hipparcos Star Catalogue.

BQ Serpentis has alternative name(s) :- BQ Ser, BQ Ser.

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+04 3804.

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

Radial Velocity and Proper Motion of BQ Serpentis

Proper Motion

All stars like planets orbit round a central spot, in the case of planets, its the central star such as the Sun. In the case of a star, its the galactic centre. The constellations that we see today will be different than they were 50,000 years ago or 50,000 years from now. Proper Motion details the movements of these stars and are measured in milliarcseconds. The star is moving 1.27 ± 0.85 milliarcseconds/year towards the north and 4.61 ± 1.52 milliarcseconds/year east if we saw them in the horizon.

Radial Velocity

The Radial Velocity, that is the speed at which the star is moving away/towards the Sun is -13.90000 km/s with an error of about 0.30 km/s . When the value is negative then the star and the Sun are getting closer to one another, likewise, a positive number means that two stars are moving away. Its nothing to fear as the stars are so far apart, they won't collide in our life-time, if ever.

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 BQ Serpentis Facts and Figures

Visual Facts


Primary / Proper / Traditional NameBQ Serpentis
Alternative NamesBQ Ser, HIP 91201, BD+04 3804, BQ Ser
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeVariable Star
GalaxyMilky Way
ConstellationSerpens
Galactic Latitude5.37483702 degrees
Galactic Longitude35.12943102 degrees
Distance from Earth0.92000 Parallax (milliarcseconds)
 3545.25 Light Years
 1086.96 Parsecs
 224,200,031.55 Astronomical Units
Proper Motion Dec.1.27000 ± 0.85000 milliarcseconds/year
Proper Motion RA.4.61000 ± 1.52000 milliarcseconds/year
Radial Velocity-13.90000 ± 0.30 km/s
Iron Abundance-0.1900 ± 9.99 Fe/H

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Variable Star Details


Variable Star ClassPulsating
Variable Star TypeCepheids(B)
Mean Variability Period in Days4.271
Variable Magnitude Range (Brighter - Dimmer)9.396 - 9.832

Sources and Links


SIMBAD SourceLink

Related Stars


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