All names: SDSS J084957.40+464545.9, Gaia DR3 1013561979199456384, Gaia EDR3 1013561979199456384, SDSS J084957.41+464545.94, SDSS J084957.41+464545.9, Gaia DR2 1013561979199456384, GALEX J084957.4+464546
| Parameter | Unit | Gaia EDR3 | SDSS DR10 | Gaia DR2 | Stilism | Kepler et al. 2015 | Vincent et al. 2024 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 49 57.38 (0.3) | 08 49 57.41 | 08 49 57.39 (0.3) | 08 49 57.38 | 08 49 57.41 (0.3) | ||||
| Declination | 46 45 45.49 (0.2) | 46 45 45.95 | 46 45 45.51 (0.3) | 46 45 45.49 | 46 45 45.94 (0.2) | ||||
| Spectral type | DA+M | DA | DA+M | DA+MS | |||||
| Effective temperature | [K] | 8398.0 (61) | 6809.0 (163) | ||||||
| log(g) | [cgs] | 7.57 (0.1) | 6.84 (0.2) | ||||||
| Mass | [M☉] | 0.407 (0.05) | 0.16 (0.04) | ||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 3.92 (0.3) | 4.48 (0.5) | 3.92 | 3.92 (0.3) | ||||
| Distance | [pc] | 255.11 (20) | 223.00 (23) | 255.11 | 255.12 (20) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -14.55775979 (0.3) | -14.43800755 (0.6) | -14.558 (0.3) | |||||
| Proper motion (declination) | [mas/yr] | -27.66800499 (0.2) | -28.09073359 (0.5) | -27.668 (0.2) | |||||
| 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 | 19.82 (0.03) | 19.84 (0.03) | 19.82 (0.03) | ||||||
| g magnitude | 19.28 (0.01) | 19.28 (0.02) | 19.28 (0.01) | ||||||
| r magnitude | 24.21 (0.7) | 24.20 (0.6) | 24.21 (0.7) | ||||||
| i magnitude | 20.06 (0.03) | 20.07 (0.03) | 20.06 (0.03) | ||||||
| z magnitude | 18.92 (0.05) | 18.94 (0.05) | 18.92 (0.04) | ||||||
| G magnitude | 19.12 (0.03) | 19.14 | 19.12 | 19.12 (0.003) | |||||
| BP magnitude | 19.33 (0.03) | 19.29 | |||||||
| RP magnitude | 18.83 (0.02) | 18.72 | |||||||
| Pan g magnitude | |||||||||
| Pan r magnitude | |||||||||
| Pan i magnitude | |||||||||
| Pan z magnitude | |||||||||
| Pan y magnitude | |||||||||
| E(B-V) | 0.013 | ||||||||
* 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.