All names: Gaia DR3 1780778481274369920, GALEX J215914.8+202917, Gaia DR2 1780778481274369920
Parameter | Unit | Vincent et al. 2024 | Simbad |
---|---|---|---|
Right ascension | 21 59 14.84 | 21 59 14.81 (0.3) | |
Declination | 20 29 17.78 | 20 29 17.43 (0.2) | |
Spectral type | DA | DA | |
Effective temperature | [K] | 9033.0 (427) | |
log(g) | [cgs] | 8.08 (0.1) | |
Mass | [M☉] | 0.645 (0.1) | |
log(Luminosity) | [L☉] | ||
Cooling age | [Gyr] | ||
log(H/He) | |||
log(C/He) | |||
log(Ca/He) | |||
log(Ca/H) | |||
Parallax | [mas] | 4.56 | 4.56 (0.3) |
Distance | [pc] | 219.47 | 219.47 (14) |
Composition | |||
Proper motion (right ascension) | [mas/yr] | 29.038 (0.3) | |
Proper motion (declination) | [mas/yr] | 21.85 (0.3) | |
Variability | |||
Magnetic | |||
Bd | [MG] | ||
Infrared excess (disk) | |||
Binarity | |||
B magnitude | |||
V magnitude | |||
R magnitude | |||
I magnitude | |||
J magnitude | |||
H magnitude | |||
K magnitude | |||
u magnitude | |||
g magnitude | |||
r magnitude | |||
i magnitude | |||
z magnitude | |||
G magnitude | 19.43 | 19.43 (0.004) | |
BP magnitude | |||
RP magnitude | |||
Pan g magnitude | |||
Pan r magnitude | |||
Pan i magnitude | |||
Pan z magnitude | |||
Pan y magnitude | |||
E(B-V) |
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.