All names: GALEXJ20568+0335, SDSS J205652.20+033548.3, LAMOST J205652.31+033548.8, Gaia DR3 1731435633531386752, 2MASS J20565219+0335483, TIC 396378566, UCAC4 468-132879, GALEX J205652.3+033548, Gaia DR2 1731435633531386752
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 20 56 52.21 | 20 56 52.20 (0.03) | ||
| Declination | 03 35 48.35 | 03 35 48.31 (0.03) | ||
| Spectral type | sdO | sdO | ||
| Effective temperature | [K] | 40350.0 (1130) | ||
| log(g) | [cgs] | 5.55 (0.09) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.77 (0.05) | 0.66 (0.04) | |
| Distance | [pc] | 1295.00 (92) | 1525.32 (103) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -2.613 (0.09) | -2.689 (0.05) | |
| Proper motion (declination) | [mas/yr] | -1.394 (0.09) | -1.32 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.27 (0.01) | |||
| V magnitude | 14.69 (0.3) | |||
| R magnitude | 14.90 (0.1) | |||
| I magnitude | ||||
| J magnitude | 15.10 (0.03) | 15.10 (0.03) | ||
| H magnitude | 15.17 (0.07) | 15.17 (0.07) | ||
| K magnitude | 15.71 (0.2) | 15.71 (0.2) | ||
| u magnitude | 13.90 (0.004) | 13.91 (0.02) | ||
| g magnitude | 14.20 (0.004) | 14.24 (0.01) | ||
| r magnitude | 14.69 (0.004) | 14.70 (0.009) | ||
| i magnitude | 15.03 (0.004) | 15.00 (0.01) | ||
| z magnitude | 15.33 (0.006) | 15.32 (0.02) | ||
| G magnitude | 14.46 (0.0007) | 14.44 (0.003) | ||
| BP magnitude | 14.23 (0.007) | |||
| RP magnitude | 14.72 (0.002) | |||
| Pan g magnitude | 14.28 (0.004) | |||
| Pan r magnitude | 14.71 (0.002) | |||
| Pan i magnitude | 15.06 (0.003) | |||
| Pan z magnitude | 15.33 (0.002) | |||
| Pan y magnitude | 15.53 (0.005) | |||
| E(B-V) | 0.062 | |||
* 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.