All names: J185722.00+781332.2, SDSS J185721.97+781332.4, GALEX J185722.2+781332, Gaia DR2 2293210651402924160, Gaia DR3 2293210651402924160
| Parameter | Unit | Gaia EDR3 | Barrientos et al. 2024 | Simbad |
|---|---|---|---|---|
| Right ascension | 18 57 21.95 (0.4) | 18 57 22.00 (0.4) | ||
| Declination | 78 13 32.72 (0.5) | 78 13 32.25 (0.5) | ||
| Spectral type | DA | DA | ||
| Effective temperature | [K] | 8041.0 (120) | ||
| log(g) | [cgs] | 8.22 (0.1) | ||
| Mass | [M☉] | 0.73 (0.1) | ||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | 1.2600 | ||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 4.79 (0.4) | 4.79 (0.4) | |
| Distance | [pc] | 208.61 (18) | 208.61 (18) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -10.4694898546819 (0.6) | -10.469 (0.6) | |
| Proper motion (declination) | [mas/yr] | 29.3853352443976 (0.6) | 29.385 (0.6) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | ||||
| H magnitude | ||||
| K magnitude | ||||
| u magnitude | 20.35 (0.07) | |||
| g magnitude | 20.07 (0.02) | |||
| r magnitude | 20.11 (0.03) | |||
| i magnitude | 20.18 (0.04) | |||
| z magnitude | 20.34 (0.2) | |||
| G magnitude | 20.04 (0.004) | 20.04 (0.005) | ||
| BP magnitude | 20.13 (0.1) | |||
| RP magnitude | 19.90 (0.1) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | ||||
* 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.