All names: LAMOST J211440.09+205441.9, Gaia DR3 1789867186124831616, GALEX J211440.0+205441, SDSSJ211440.06+205441.5, SDSS J211440.06+205441.5, UCAC4 555-125723, Gaia DR2 1789867186124831616
Parameter | Unit | Geier 2020 | Stilism | Simbad |
---|---|---|---|---|
Right ascension | 21 14 40.10 | 21 14 40.06 (0.04) | ||
Declination | 20 54 41.90 | 20 54 41.57 (0.04) | ||
Spectral type | sdB | sdB | ||
Effective temperature | [K] | 30922.0 (283) | ||
log(g) | [cgs] | 5.74 (0.06) | ||
Mass | [M☉] | |||
log(Luminosity) | [L☉] | |||
Cooling age | [Gyr] | |||
log(H/He) | ||||
log(C/He) | ||||
log(Ca/He) | ||||
log(Ca/H) | ||||
Parallax | [mas] | 0.30 (0.09) | 0.33 (0.06) | |
Distance | [pc] | 3365.87 (1042) | 2989.54 (505) | |
Composition | ||||
Proper motion (right ascension) | [mas/yr] | -2.99 (0.1) | -2.97 (0.05) | |
Proper motion (declination) | [mas/yr] | -3.445 (0.1) | -3.577 (0.04) | |
Variability | ||||
Magnetic | ||||
Bd | [MG] | |||
Infrared excess (disk) | ||||
Binarity | ||||
B magnitude | ||||
V magnitude | ||||
R magnitude | 15.95 (0.3) | |||
I magnitude | ||||
J magnitude | ||||
H magnitude | ||||
K magnitude | ||||
u magnitude | 16.06 (0.01) | |||
g magnitude | 16.13 (0.007) | |||
r magnitude | 16.53 (0.008) | |||
i magnitude | 16.85 (0.01) | |||
z magnitude | 17.06 (0.01) | |||
G magnitude | 16.38 (0.001) | 16.35 (0.003) | ||
BP magnitude | 16.21 (0.009) | |||
RP magnitude | 16.53 (0.006) | |||
Pan g magnitude | 16.23 (0.004) | |||
Pan r magnitude | 16.56 (0.003) | |||
Pan i magnitude | 16.86 (0.004) | |||
Pan z magnitude | 17.11 (0.004) | |||
Pan y magnitude | 17.28 (0.006) | |||
E(B-V) | 0.109 |
* 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.