All names: 2MASS J20025235-5152220, Gaia DR3 6665837488761605760, Gaia DR2 6665837488761605760, GALEX J200252.2-515220, Gaia EDR3 6665837488761605760, UCAC4 191-202254, GALEXJ20028-5152, TIC 101403951, EC 19590-5200
Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
---|---|---|---|---|---|
Right ascension | 20 02 52.31 (0.03) | 20 02 52.29 | 20 02 52.35 (0.03) | ||
Declination | -51 52 22.48 (0.02) | -51 52 20.86 | -51 52 22.03 (0.02) | ||
Spectral type | sdB+WD? | sdB | |||
Effective temperature | [K] | ||||
log(g) | [cgs] | ||||
Mass | [M☉] | ||||
log(Luminosity) | [L☉] | ||||
Cooling age | [Gyr] | ||||
log(H/He) | |||||
log(C/He) | |||||
log(Ca/He) | |||||
log(Ca/H) | |||||
Parallax | [mas] | 1.43 (0.04) | 1.46 (0.06) | 1.43 (0.04) | |
Distance | [pc] | 701.75 (20) | 686.81 (30) | 701.75 (20) | |
Composition | |||||
Proper motion (right ascension) | [mas/yr] | -26.549 (0.03) | -26.823 (0.09) | -26.549 (0.03) | |
Proper motion (declination) | [mas/yr] | -28.054 (0.03) | -28.149 (0.07) | -28.054 (0.03) | |
Variability | |||||
Magnetic | |||||
Bd | [MG] | ||||
Infrared excess (disk) | |||||
Binarity | |||||
B magnitude | 13.71 | ||||
V magnitude | 13.94 | ||||
R magnitude | 14.22 (0.1) | ||||
I magnitude | |||||
J magnitude | 14.45 (0.03) | 14.45 (0.03) | |||
H magnitude | 14.50 (0.04) | 14.50 (0.04) | |||
K magnitude | 14.55 (0.09) | 14.55 (0.09) | |||
u magnitude | |||||
g magnitude | |||||
r magnitude | |||||
i magnitude | |||||
z magnitude | |||||
G magnitude | 13.89 (0.003) | 13.90 (0.0005) | 13.89 (0.003) | ||
BP magnitude | 13.76 (0.003) | 13.72 (0.008) | |||
RP magnitude | 14.13 (0.004) | 14.13 (0.003) | |||
Pan g magnitude | |||||
Pan r magnitude | |||||
Pan i magnitude | |||||
Pan z magnitude | |||||
Pan y magnitude | |||||
E(B-V) | 0.030 |
* 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.