All names: Gaia DR2 4227410277932475264, Gaia DR3 4227410277932475264, SDSS J205532.18-000453.5, Gaia DR3 4227410449731931520, Gaia EDR3 4227410449731931520, TIC 248776104, 2MASS J20553218-0004536, PG 2052-003, FBS 2052-002, GALEX J205532.1-000453, PG2052-003
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Vincent et al. 2024 | Simbad |
|---|---|---|---|---|---|---|
| Right ascension | 20 55 38.28 (0.4) | 20 55 32.20 | 20 55 38.28 | 20 55 32.18 (0.04) | ||
| Declination | -00 03 41.95 (0.2) | -00 04 53.52 | -00 03 41.95 | -00 04 53.58 (0.02) | ||
| Spectral type | sdB | DA | sdB | |||
| Effective temperature | [K] | 6247.0 (215) | ||||
| log(g) | [cgs] | 8.25 (0.1) | ||||
| Mass | [M☉] | 0.745 (0.09) | ||||
| log(Luminosity) | [L☉] | |||||
| Cooling age | [Gyr] | |||||
| log(H/He) | ||||||
| log(C/He) | ||||||
| log(Ca/He) | ||||||
| log(Ca/H) | ||||||
| Parallax | [mas] | 7.32 (0.5) | 0.52 (0.08) | 7.32 | 0.53 (0.05) | |
| Distance | [pc] | 136.63 (9) | 1938.74 (297) | 136.63 | 1870.56 (173) | |
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | 15.0 (0.5) | -3.251 (0.1) | -3.351 (0.05) | ||
| Proper motion (declination) | [mas/yr] | -38.082 (0.4) | -0.244 (0.07) | -0.222 (0.04) | ||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | ||||||
| B magnitude | 15.90 | |||||
| V magnitude | 15.90 | |||||
| R magnitude | ||||||
| I magnitude | ||||||
| J magnitude | 15.76 (0.07) | 15.76 (0.07) | ||||
| H magnitude | 15.92 (0.2) | 15.86 (0.02) | ||||
| K magnitude | 15.52 | 15.92 (0.03) | ||||
| u magnitude | 14.73 (0.004) | 14.70 (0.02) | ||||
| g magnitude | 14.95 (0.003) | 14.95 (0.01) | ||||
| r magnitude | 15.43 (0.004) | 15.38 (0.01) | ||||
| i magnitude | 15.77 (0.004) | 15.72 (0.01) | ||||
| z magnitude | 16.03 (0.008) | 16.01 (0.01) | ||||
| G magnitude | 19.95 (0.004) | 15.18 (0.0007) | 19.95 | 15.16 (0.003) | ||
| BP magnitude | 20.22 (0.05) | 14.98 (0.005) | ||||
| RP magnitude | 19.48 (0.05) | 15.41 (0.002) | ||||
| Pan g magnitude | 15.01 (0.008) | |||||
| Pan r magnitude | 15.42 (0.002) | |||||
| Pan i magnitude | 15.74 (0.002) | |||||
| Pan z magnitude | 16.01 (0.005) | |||||
| Pan y magnitude | 16.18 (0.004) | |||||
| E(B-V) | 0.047 | |||||
* 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.