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) | ![has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:30:42.0 has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:30:42.0](facet.gif) |
is an instance of type I supernova | ![2001-09-27 09:30:42.0 2001-09-27 09:30:42.0](facet.gif) |
type I supernova | has frequency less common than type II supernova | ![2001-09-27 09:30:42.0 2001-09-27 09:30:42.0](facet.gif) |
has absolute magnitude Mv = -14 to -17 | ![2001-09-27 09:30:42.0 2001-09-27 09:30:42.0](facet.gif) |
has spectra nonhydrogen lines | ![2001-09-27 09:30:42.0 2001-09-27 09:30:42.0](facet.gif) |
has ejecta velocity 10000 km s-1 | ![2001-09-27 09:30:42.0 2001-09-27 09:30:42.0](facet.gif) |
has mass lower than type II supernova | ![2001-09-27 09:30:42.0 2001-09-27 09:30:42.0](facet.gif) |
has location spiral and elliptical galaxies | ![2001-09-27 09:30:42.0 2001-09-27 09:30:42.0](facet.gif) |
supernova | has energy release 1049 to 1051 ergs | ![2001-09-27 09:30:42.0 2001-09-27 09:30:42.0](facet.gif) |
has use supernova peak brightness distance determination | ![2001-09-27 09:30:42.0 2001-09-27 09:30:42.0](facet.gif) |
has peak brightness 108 solar luminosity units | ![2001-09-27 09:30:42.0 2001-09-27 09:30:42.0](facet.gif) |
emission line star | has emission line | ![2001-09-27 09:30:27.0 2001-09-27 09:30:27.0](facet.gif) |
cataclysmic variable | has synonym eruptive variable | ![2001-09-27 09:30:40.0 2001-09-27 09:30:40.0](facet.gif) |
has synonym explosive variable | ![2001-09-27 09:30:40.0 2001-09-27 09:30:40.0](facet.gif) |
has recovery time | ![2001-09-27 09:30:40.0 2001-09-27 09:30:40.0](facet.gif) |
has outburst start time | ![2001-09-27 09:30:40.0 2001-09-27 09:30:40.0](facet.gif) |
has acronym CV | ![2001-09-27 09:30:40.0 2001-09-27 09:30:40.0](facet.gif) |
star | has star surface temperature | ![2001-09-27 09:30:25.0 2001-09-27 09:30:25.0](facet.gif) |
has spectral type | ![2001-09-27 09:30:25.0 2001-09-27 09:30:25.0](facet.gif) |
has V magnitude | ![2001-09-27 09:30:25.0 2001-09-27 09:30:25.0](facet.gif) |
has B magnitude | ![2001-09-27 09:30:25.0 2001-09-27 09:30:25.0](facet.gif) |
has U magnitude | ![2001-09-27 09:30:25.0 2001-09-27 09:30:25.0](facet.gif) |
has position on celestial sphere from the point of view of Earth | ![2001-09-27 09:30:25.0 2001-09-27 09:30:25.0](facet.gif) |
has parallax from the point of view of Earth's orbit | ![2001-09-27 09:30:25.0 2001-09-27 09:30:25.0](facet.gif) |
has proper motion | ![2001-09-27 09:30:24.0 2001-09-27 09:30:24.0](facet.gif) |
has radiation at surface which is diffused out from the hotter core | ![2001-09-27 09:30:24.0 2001-09-27 09:30:24.0](facet.gif) |
has energy source gravitational contraction and or fusion | ![2001-09-27 09:30:24.0 2001-09-27 09:30:24.0](facet.gif) |
has energy production which takes place primarily within the core | ![2001-09-27 09:30:24.0 2001-09-27 09:30:24.0](facet.gif) |
has surface density which depends on luminosity class | ![2001-09-27 09:30:24.0 2001-09-27 09:30:24.0](facet.gif) |
has surface temperature greater than 1000 Kelvin | ![2001-09-27 09:30:24.0 2001-09-27 09:30:24.0](facet.gif) |
has apparent magnitude | ![2001-09-27 09:30:25.0 2001-09-27 09:30:25.0](facet.gif) |
has age | ![2001-09-27 09:30:25.0 2001-09-27 09:30:25.0](facet.gif) |
has catalog star catalog | ![2001-09-27 09:30:25.0 2001-09-27 09:30:25.0](facet.gif) |
has material hydrogen, helium | ![2001-09-27 09:30:24.0 2001-09-27 09:30:24.0](facet.gif) |
has velocity determined from proper motion and radial velocity | ![2001-09-27 09:30:25.0 2001-09-27 09:30:25.0](facet.gif) |
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
| ![2001-09-27 09:30:34.0 2001-09-27 09:30:34.0](facet.gif) |
has observational problem some difficulty in distinguishing between various kinds | ![2001-09-27 09:30:34.0 2001-09-27 09:30:34.0](facet.gif) |
has observable variation time scale within a period of decades | ![has URL: http://www.aavso.org, 2001-09-27 09:30:34.0 has URL: http://www.aavso.org, 2001-09-27 09:30:34.0](facet.gif) |
has light curve | ![2001-09-27 09:30:34.0 2001-09-27 09:30:34.0](facet.gif) |
has optical brightness variation 0.2 magnitudes or greater | ![2001-09-27 09:30:34.0 2001-09-27 09:30:34.0](facet.gif) |
has amplitude | ![2001-09-27 09:30:34.0 2001-09-27 09:30:34.0](facet.gif) |
physical object | has angular momentum | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has momentum | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has temperature | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has volume | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has extent | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |