All names: SDSS J081522.70-075805.8, Gaia EDR3 3062898756834888704, Gaia DR2 3062898756834888704, GALEX J081522.6-075805, SDSS J081522.71-075805.8, Gaia DR3 3062898756834888704
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 15 22.69 (0.8) | 08 15 22.69 | 08 15 22.69 (1) | 08 15 22.70 (0.8) | 08 15 22.71 | |||
| Declination | -07 58 05.67 (0.5) | -07 58 05.79 | -07 58 05.68 (0.8) | -07 58 05.88 (0.5) | -07 58 05.82 | |||
| Spectral type | DA | DA | DA+MS | |||||
| Effective temperature | [K] | 27481.0 (1154) | ||||||
| log(g) | [cgs] | 8.08 (0.2) | ||||||
| Mass | [M☉] | 0.679 (0.09) | ||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 1.45 (1) | -0.98 (1) | 1.45 (1) | ||||
| Distance | [pc] | 688.22 (468) | 688.23 (468) | |||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -8.5949793 (1) | -3.397097974 (2) | -8.595 (1) | ||||
| Proper motion (declination) | [mas/yr] | 12.83969104 (0.7) | 10.95009601 (1) | 12.84 (0.7) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | WDMS | |||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 20.52 (0.07) | 20.50 (0.08) | 20.50 (0.08) | |||||
| g magnitude | 20.52 (0.03) | 20.46 (0.07) | 20.46 (0.07) | |||||
| r magnitude | 20.80 (0.06) | 20.57 (0.2) | 20.57 (0.2) | |||||
| i magnitude | 21.22 (0.1) | 21.16 (0.5) | ||||||
| z magnitude | 21.99 (0.5) | 21.20 (0.4) | ||||||
| G magnitude | 20.56 (0.08) | 20.62 | 20.56 (0.006) | |||||
| BP magnitude | 20.56 (0.08) | 20.45 | ||||||
| RP magnitude | 20.43 (0.1) | 20.55 | ||||||
| Pan g magnitude | ||||||||
| Pan r magnitude | ||||||||
| Pan i magnitude | ||||||||
| Pan z magnitude | ||||||||
| Pan y magnitude | ||||||||
| E(B-V) | 0.051 | |||||||
* 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.