All names: Gaia DR2 708217670201714048, Gaia DR3 708217670201714048, Gaia EDR3 708217670201714048, SDSS J082042.46+290126.5, SDSS J082042.45+290126.5, GALEX J082042.4+290127
| Parameter | Unit | Gaia EDR3 | Stilism | Vincent et al. 2024 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|
| Right ascension | 08 20 42.42 (0.2) | 08 20 42.42 | 08 20 42.47 (0.2) | |||
| Declination | 29 01 26.43 (0.1) | 29 01 26.43 | 29 01 26.60 (0.1) | |||
| Spectral type | DC | DC | DC | |||
| Effective temperature | [K] | 7605.0 (271) | ||||
| log(g) | [cgs] | 8.04 (0.06) | ||||
| Mass | [M☉] | 0.603 (0.05) | ||||
| log(Luminosity) | [L☉] | |||||
| Cooling age | [Gyr] | |||||
| log(H/He) | ||||||
| log(C/He) | ||||||
| log(Ca/He) | ||||||
| log(Ca/H) | ||||||
| Parallax | [mas] | 8.89 (0.2) | 8.89 | 8.89 (0.2) | ||
| Distance | [pc] | 112.52 (2) | 112.52 | 112.52 (2) | ||
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | -40.469 (0.2) | -40.469 (0.2) | |||
| Proper motion (declination) | [mas/yr] | -10.57 (0.1) | -10.57 (0.1) | |||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | ||||||
| B magnitude | ||||||
| V magnitude | ||||||
| R magnitude | ||||||
| I magnitude | ||||||
| J magnitude | 18.20 (0.06) | |||||
| H magnitude | 18.20 (0.1) | |||||
| K magnitude | 18.10 (0.2) | |||||
| u magnitude | 18.93 (0.02) | |||||
| g magnitude | 18.59 (0.008) | |||||
| r magnitude | 18.56 (0.009) | |||||
| i magnitude | 18.62 (0.01) | |||||
| z magnitude | 18.73 (0.05) | |||||
| G magnitude | 18.52 (0.004) | 18.52 | 18.52 (0.003) | |||
| BP magnitude | 18.66 (0.03) | |||||
| RP magnitude | 18.31 (0.03) | |||||
| Pan g magnitude | ||||||
| Pan r magnitude | ||||||
| Pan i magnitude | ||||||
| Pan z magnitude | ||||||
| Pan y magnitude | ||||||
| E(B-V) | 0.004 | |||||
* 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.