Universe Guide

BB Geminorum

BB Geminorum Facts

  • BB Geminorum is a pulsating variable star that can be located in the constellation of Gemini. The description is based on the spectral class.
  • BB Geminorum is not part of the constellation outline but is within the borders of the constellation.
  • The star can not be seen by the naked eye, you need a telescope to see it.
  • The star is calculated at being about -526.07 light years away from us. Distance

BB Geminorum's Alternative Names

HIP31361 is the reference name for the star in the Hipparcos Star Catalogue.

BB Geminorum has alternative name(s) :- BB Gem, BB Gem.

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

Location of BB Geminorum

The location of the variable star in the night sky is determined by the Right Ascension (R.A.) and Declination (Dec.), these are equivalent to the Longitude and Latitude on the Earth. The Right Ascension is how far expressed in time (hh:mm:ss) the star is along the celestial equator. If the R.A. is positive then its eastwards. The Declination is how far north or south the object is compared to the celestial equator and is expressed in degrees. For BB Geminorum, the location is 06h 34m 35.29 and +13° 04` 44.7 .

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 BB Geminorum Facts and Figures

Visual Facts

Primary / Proper / Traditional NameBB Geminorum
Alternative NamesBB Gem, HIP 31361, BB Gem
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeVariable Star
GalaxyMilky Way
Visual / Apparent Magnitude11.84
Naked Eye VisibleRequires a 4.5 - 6 Inch Telescope - Magnitudes
Right Ascension (R.A.)06h 34m 35.29
Declination (Dec.)+13° 04` 44.7
Galactic Latitude2.26432100 degrees
Galactic Longitude199.38694619 degrees
Distance from Earth-6.20000 Parallax (milliarcseconds)
 -526.07 Light Years
 -161.29 Parsecs
 -33,268,218.78 Astronomical Units
B-V Index-99
Radial Velocity64.50000 ± 0.70 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 Days2.308
Variable Magnitude Range (Brighter - Dimmer)11.016 - 12.132

Sources and Links

SIMBAD SourceLink

Related Stars

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