All names: GALEX J205321.0-400627, 2MASS J20532103-4006294, GALEXJ205321.05-400626.94, EC 20500-4017, GALEX J205321.0-400626, Gaia DR3 6678479845256836224, TYC 7968-690-1, TIC 389524494, Gaia DR2 6678479845256836224, [SRA98] 6-1829, UCAC4 250-186949
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 20 53 21.05 | 20 53 21.03 (0.03) | ||
| Declination | -40 06 26.94 | -40 06 29.46 (0.02) | ||
| Spectral type | sdB | B | ||
| Effective temperature | [K] | 23050.0 (350) | ||
| log(g) | [cgs] | 4.78 (0.09) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 1.31 (0.07) | 1.16 (0.04) | |
| Distance | [pc] | 766.05 (40) | 861.55 (29) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 15.45 (0.1) | 15.525 (0.04) | |
| Proper motion (declination) | [mas/yr] | 1.791 (0.08) | 1.897 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 11.97 (0.03) | |||
| V magnitude | 12.10 (0.02) | |||
| R magnitude | 12.43 (0.09) | |||
| I magnitude | ||||
| J magnitude | 12.49 (0.02) | 12.49 (0.02) | ||
| H magnitude | 12.65 (0.03) | 12.65 (0.03) | ||
| K magnitude | 12.71 (0.03) | 12.71 (0.03) | ||
| u magnitude | ||||
| g magnitude | 11.95 (0.03) | |||
| r magnitude | 12.31 (0.01) | |||
| i magnitude | 12.61 (0.02) | |||
| z magnitude | ||||
| G magnitude | 12.11 (0.0005) | 12.09 (0.003) | ||
| BP magnitude | 11.97 (0.005) | |||
| RP magnitude | 12.28 (0.001) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.028 | |||
* 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.