Tycho's star | has definition Remnant of a Type I supernova (B Cas), 3-5 kpc distant, which Tycho observed and described in 1572. At its peak it was as bright as Venus and was visible in the daytime, reaching a magnitude of about -4. It is an X-ray source (2U 0022+63). (3C 10) | |
is an instance of type I supernova | |
type I supernova | has frequency less common than type II supernova | |
has absolute magnitude Mv = -14 to -17 | |
has spectra nonhydrogen lines | |
has ejecta velocity 10000 km s-1 | |
has mass lower than type II supernova | |
has location spiral and elliptical galaxies | |
supernova | has energy release 1049 to 1051 ergs | |
has use supernova peak brightness distance determination | |
has peak brightness 108 solar luminosity units | |
emission line star | has emission line | |
cataclysmic variable | has synonym eruptive variable | |
has synonym explosive variable | |
has recovery time | |
has outburst start time | |
has acronym CV | |
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 age | |
has catalog star catalog | |
has material hydrogen, helium | |
has velocity determined from proper motion and radial velocity | |
variable | has name designated with - R, S, T, U, V, W, X, Y, or Z and the genitive of the latin constellation name
- RR, RS, RT, RU, RV, RW, RX, RY, or RZ and the genitive of the latin constellation name when the single letter designations are exhausted
- AA...AZ, BB...BZ, etc. (omitting J), which ends with QQ...QZ and the genitive of the latin constellation namewhen the RR...RZ designations are exhausted
- V 335, V 336, etc., when the double letter designations are exhausted
| |
has observational problem some difficulty in distinguishing between various kinds | |
has observable variation time scale within a period of decades | |
has light curve | |
has optical brightness variation 0.2 magnitudes or greater | |
has amplitude | |
physical object | has angular momentum | |
has momentum | |
has temperature | |
has volume | |
has extent | |