Universe Guide

BL Hydra

BL Hydra Facts

  • BL Hydra is a pulsating star that can be located in the constellation of Hydra. The description is based on the spectral class.
  • BL Hydra is not part of the constellation outline but is within the borders of the constellation.
  • The star is calculated at being about 40069.21 light years away from us. Distance

BL Hydra's Alternative Names

BL Hydra has alternative name(s) :- BL Hya.

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

Location of BL Hydra

The location of the 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 BL Hydra, the location is 12 25 32.3876122862 and -31 19 03.983281114 .

Proper Motion of BL Hydra

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 -1.36 milliarcseconds/year towards the north and -4.15 milliarcseconds/year east if we saw them in the horizon. . 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.

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Additional BL Hydra Facts and Figures

Visual Facts

Primary / Proper / Traditional NameBL Hydra
Alternative NamesBL Hya
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star Type Star
GalaxyMilky Way
Right Ascension (R.A.)12 25 32.3876122862
Declination (Dec.)-31 19 03.983281114
Distance from Earth0.08140 Parallax (milliarcseconds)
 40069.21 Light Years
 12285.01 Parsecs
 2,533,947,550.60 Astronomical Units
Proper Motion Dec.-1.35900 milliarcseconds/year
Proper Motion RA.-4.15200 milliarcseconds/year

Companions (Multi-Star and Exoplanets) Facts

Exoplanet CountNone/Unaware

Variable Star Details

Variable Star ClassPulsating
Variable Star TypeOmicron Ceti

Sources and Links


Related Stars

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