All names: Gaia EDR3 2606804183827379200, Gaia DR3 2606792329717722496, GALEX J225715.3-092842, SDSS J225715.35-092843.0, Gaia DR2 2606792329717722496, SDSS J225715.36-092843.1
| Parameter | Unit | Gaia EDR3 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 22 57 17.18 (0.6) | 22 57 15.36 (0.9) | ||
| Declination | -09 27 10.77 (0.6) | -09 28 43.09 (0.7) | ||
| Spectral type | DB | |||
| 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] | 1.20 (0.7) | 2.27 (1) | |
| Distance | [pc] | 834.45 (469) | 441.48 (208) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 7.93 (0.8) | 16.315 (1) | |
| Proper motion (declination) | [mas/yr] | -2.864 (0.8) | -8.581 (1) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | ||||
| H magnitude | ||||
| K magnitude | ||||
| u magnitude | 20.26 (0.07) | |||
| g magnitude | 20.41 (0.03) | |||
| r magnitude | 20.69 (0.04) | |||
| i magnitude | 20.90 (0.08) | |||
| z magnitude | 21.07 | |||
| G magnitude | 20.33 (0.009) | 20.58 (0.01) | ||
| BP magnitude | 20.52 (0.1) | |||
| RP magnitude | 19.81 (0.08) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.039 | |||
* 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.