All names: GALEXJ22129-1746, 2MASS J22125785-1746224, UCAC4 362-200725, Gaia DR2 6825799525610554368, Gaia DR3 6825799525610554368, TIC 437697985, GALEX J221257.8-174622, EC 22102-1801
Parameter | Unit | Geier 2020 | Stilism | Simbad |
---|---|---|---|---|
Right ascension | 22 12 57.83 | 22 12 57.85 (0.04) | ||
Declination | -17 46 22.97 | -17 46 22.29 (0.04) | ||
Spectral type | sdO | 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] | 0.48 (0.07) | 0.57 (0.05) | |
Distance | [pc] | 2076.41 (313) | 1755.62 (153) | |
Composition | ||||
Proper motion (right ascension) | [mas/yr] | 3.862 (0.1) | 3.663 (0.05) | |
Proper motion (declination) | [mas/yr] | -5.782 (0.1) | -5.82 (0.05) | |
Variability | ||||
Magnetic | ||||
Bd | [MG] | |||
Infrared excess (disk) | ||||
Binarity | ||||
B magnitude | 14.67 (0.02) | |||
V magnitude | 14.94 (0.01) | |||
R magnitude | 14.76 (0.5) | |||
I magnitude | ||||
J magnitude | 15.49 (0.05) | 15.49 (0.05) | ||
H magnitude | 15.23 (0.1) | 15.23 (0.1) | ||
K magnitude | 15.45 (0.2) | 15.45 (0.2) | ||
u magnitude | ||||
g magnitude | 14.68 (0.01) | |||
r magnitude | 15.15 (0.01) | |||
i magnitude | ||||
z magnitude | ||||
G magnitude | 14.87 (0.001) | 14.86 (0.003) | ||
BP magnitude | 14.67 (0.01) | |||
RP magnitude | 15.15 (0.002) | |||
Pan g magnitude | 14.69 (0.002) | |||
Pan r magnitude | 15.15 (0.002) | |||
Pan i magnitude | 15.50 (0.003) | |||
Pan z magnitude | 15.75 (0.007) | |||
Pan y magnitude | 15.90 (0.008) | |||
E(B-V) | 0.024 |
* 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.