All names: SDSS J085726.28+283912.5, Gaia DR2 693331588431443328, Gaia DR3 693331592729117440, SDSS J085726.26+283912.4, GALEX J085726.2+283912, Gaia EDR3 693331592729117440
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 57 26.25 (0.5) | 08 57 26.27 | 08 57 26.25 (2) | 08 57 26.27 (0.5) | 08 57 26.28 | ||||
| Declination | 28 39 12.33 (0.3) | 28 39 12.49 | 28 39 12.34 (1) | 28 39 12.55 (0.3) | 28 39 12.52 | ||||
| Spectral type | DA | DA | DA | ||||||
| Effective temperature | [K] | 11814.0 (468) | |||||||
| log(g) | [cgs] | 7.45 (0.2) | |||||||
| Mass | [M☉] | 0.388 (0.08) | |||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 1.25 (0.6) | 1.25 (0.6) | ||||||
| Distance | [pc] | 799.71 (386) | 799.74 (386) | ||||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -13.6154838 (0.6) | -13.615 (0.6) | ||||||
| Proper motion (declination) | [mas/yr] | -13.82709255 (0.5) | -13.827 (0.5) | ||||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 20.53 (0.05) | 20.54 (0.05) | 20.63 (0.07) | ||||||
| g magnitude | 20.09 (0.02) | 20.10 (0.02) | 20.10 (0.03) | ||||||
| r magnitude | 20.27 (0.02) | 20.27 (0.02) | 20.25 (0.03) | ||||||
| i magnitude | 20.51 (0.05) | 20.53 (0.04) | 20.53 (0.04) | ||||||
| z magnitude | 20.56 (0.1) | 20.53 (0.1) | 20.53 (0.1) | ||||||
| G magnitude | 20.20 (0.05) | 20.27 | 20.20 (0.005) | ||||||
| BP magnitude | 20.14 (0.05) | 20.25 | |||||||
| RP magnitude | 19.93 (0.07) | 20.08 | |||||||
| Pan g magnitude | 20.14 (0.02) | ||||||||
| Pan r magnitude | 20.26 (0.03) | ||||||||
| Pan i magnitude | 20.51 (0.03) | ||||||||
| Pan z magnitude | 20.68 (0.03) | ||||||||
| Pan y magnitude | 20.72 (0.2) | ||||||||
| E(B-V) | 0.025 | ||||||||
* 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.