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physical object > natural object > celestial body > collection of stars > star system > binary star > spectroscopic binary > Plaskett's star |
Plaskett's star (HD 47129) | ||||
subject | fact |
Plaskett's star | is a part of Monoceros | |
has synonym HD 47129 | ||
has definition A very massive O-type giant with known anomalies in its spectrum. It is a spectroscopic binary in which mass exchange is occurring. Its spectrum can be interpreted to mean that each component has a mass of 75 Msun. | ||
is an instance of O star | ||
is an instance of giant | ||
is an instance of spectroscopic binary | ||
giant | has luminosity class III | |
O star | has lifetime 3 to 6 million years | |
has color blue-white | ||
has surface temperature 35000 K | ||
has relative abundance rare | ||
has rotation velocity very high | ||
has absorption line He II | ||
binary star | has number of stars 2 | |
has orbital period | ||
star | has star surface temperature | |
has spectral type | ||
has V magnitude | ||
has B magnitude | ||
has U magnitude | ||
has position on celestial sphere from the point of view of Earth | ||
has parallax from the point of view of Earth's orbit | ||
has proper motion | ||
has radiation at surface which is diffused out from the hotter core | ||
has energy source gravitational contraction and or fusion | ||
has energy production which takes place primarily within the core | ||
has surface density which depends on luminosity class | ||
has apparent magnitude | ||
has absolute magnitude | ||
has age | ||
has catalog star catalog | ||
has material hydrogen, helium | ||
has velocity determined from proper motion and radial velocity | ||
has mass greater than 0.08 the sun's mass | ||
early star | has spectral type O, B, A, and early F | |
star system | has abundance half the stars in the solar neighborhood are members of star systems | |
celestial body | has spectra | |
physical object | has location or center of gravity | |
has angular momentum | ||
has momentum | ||
has temperature | ||
has volume | ||
has extent |
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