Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Corona Borealis |
Right ascension | 16h 01m 23.187s [2] |
Declination | +36° 48′ 34.29″ [2] |
Apparent magnitude (V) | 14.53 [3] |
Characteristics | |
Evolutionary stage | White dwarf |
Spectral type | DA4.4 [4] |
Astrometry | |
Proper motion (μ) |
RA: 101.113
[2]
mas/
yr Dec.: −545.353 [2] mas/ yr |
Parallax (π) | 30.4668 ± 0.0187 mas [2] |
Distance | 107.05 ± 0.07
ly (32.82 ± 0.02 pc) |
Other designations | |
Database references | |
SIMBAD | data |
TY Coronae Borealis, also known as Ross 808, is a variable white dwarf star of the DAV (or ZZ Ceti) type in the constellation Corona Borealis. It has a surface temperature of 11,213 ± 130 K and a mass around 70% times that of the Sun, but only 1.1% of its diameter. [5] It is 107 light-years distant from Earth. [2] It was confirmed as a variable star in 1976. [6]
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Corona Borealis |
Right ascension | 16h 01m 23.187s [2] |
Declination | +36° 48′ 34.29″ [2] |
Apparent magnitude (V) | 14.53 [3] |
Characteristics | |
Evolutionary stage | White dwarf |
Spectral type | DA4.4 [4] |
Astrometry | |
Proper motion (μ) |
RA: 101.113
[2]
mas/
yr Dec.: −545.353 [2] mas/ yr |
Parallax (π) | 30.4668 ± 0.0187 mas [2] |
Distance | 107.05 ± 0.07
ly (32.82 ± 0.02 pc) |
Other designations | |
Database references | |
SIMBAD | data |
TY Coronae Borealis, also known as Ross 808, is a variable white dwarf star of the DAV (or ZZ Ceti) type in the constellation Corona Borealis. It has a surface temperature of 11,213 ± 130 K and a mass around 70% times that of the Sun, but only 1.1% of its diameter. [5] It is 107 light-years distant from Earth. [2] It was confirmed as a variable star in 1976. [6]