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physical object > naked eye object > naked eye star > Spica
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Spica
(alpha Vir, HR 5056)
subjectfact 
Spicahas declination -11 9 412001-09-27 09:31:25.0
has right ascension 13 25 11.52001-09-27 09:31:25.0
has spectral type B1III-IV+B2V2001-09-27 09:31:25.0
has V magnitude 0.982001-09-27 09:31:25.0
has inclination i = 65°has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:25.0
has eccentricity e = 0.146has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:25.0
has distance 80 pchas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:25.0
is a part of Virgohas URL: http://www.seds.org/Maps/Const/Data/virgo_tab.html, 2001-09-27 09:31:25.0
has synonym alpha Virhas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:25.0
has synonym HR 50562001-09-27 09:31:25.0
has B-V magnitude -0.232001-09-27 09:31:25.0
has orbital period 4.01452 dayshas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:25.0
has definition A double-lined spectroscopic binary (B1.5 V, late B). Component A (10.9 Msun) is a beta Cephei star which seems to be near core hydrogen exhaustion.has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:31:25.0
is an instance of B star2001-09-27 09:31:25.0
is an instance of spectroscopic binary2001-09-27 09:31:25.0
is an instance of giant2001-09-27 09:31:25.0
is an instance of naked eye star2001-09-27 09:31:25.0
B starhas color blue-white2001-09-27 09:30:45.0
has surface temperature 11000 to 28000 K2001-09-27 09:30:45.0
has absorption line He I2001-09-27 09:30:45.0
gianthas luminosity class III2001-09-27 09:30:51.0
naked eye starhas been observed for many centuries2001-09-27 09:30:25.0
is usually part of asterism2001-09-27 09:30:25.0
is a part of celestial sphere2001-09-27 09:30:25.0
is a part of Milky Way2001-09-27 09:30:25.0
has apparent magnitude brighter than 52001-09-27 09:30:25.0
binary starhas number of stars 22001-09-27 09:30:54.0
starhas star surface temperature2001-09-27 09:30:25.0
has B magnitude2001-09-27 09:30:25.0
has U magnitude2001-09-27 09:30:25.0
has position on celestial sphere from the point of view of Earth2001-09-27 09:30:25.0
has parallax from the point of view of Earth's orbit2001-09-27 09:30:25.0
has proper motion2001-09-27 09:30:24.0
has radiation at surface which is diffused out from the hotter core2001-09-27 09:30:24.0
has energy source gravitational contraction and or fusion2001-09-27 09:30:24.0
has energy production which takes place primarily within the core2001-09-27 09:30:24.0
has surface density which depends on luminosity class2001-09-27 09:30:24.0
has absolute magnitude2001-09-27 09:30:25.0
has age2001-09-27 09:30:25.0
has catalog star catalog2001-09-27 09:30:25.0
has material hydrogen, helium2001-09-27 09:30:24.0
has velocity determined from proper motion and radial velocity2001-09-27 09:30:25.0
has mass greater than 0.08 the sun's mass2001-09-27 09:30:24.0
star systemhas abundance half the stars in the solar neighborhood are members of star systems2001-09-27 09:30:54.0
celestial bodyhas spectra2001-09-27 09:30:09.0
physical objecthas location or center of gravity2001-09-27 09:27:27.0
has angular momentum2001-09-27 09:27:27.0
has momentum2001-09-27 09:27:27.0
has temperature2001-09-27 09:27:27.0
has volume2001-09-27 09:27:27.0
has extent2001-09-27 09:27:27.0

Next B star: Vela X-1    Up: B star, giant, naked eye star, spectroscopic binary    Previous B star: sdB