Astronomy View all facts Glossary Help |
physical object > natural object > celestial body > collection of stars > star system > triple star > 40 Eridani |
40 Eridani | ||||
subject | fact |
40 Eridani | is a part of Eridanus | |
has definition A nearby triple system, 5 pc distant. Component A is K0 V; component B is a DA white dwarf; component C is M5e V. | ||
is an instance of triple star | ||
triple star | has number of stars 3 | |
star system | has abundance half the stars in the solar neighborhood are members of star systems | |
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 surface temperature greater than 1000 Kelvin | ||
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 | ||
celestial body | has spectra | |
physical object | has location or center of gravity | |
has angular momentum | ||
has momentum | ||
has temperature | ||
has volume | ||
has extent |
Next triple star: Gamma Velorum Up: triple star