All names: SDSS J084026.16+220446.6, LAMOST J084026.16+220446.5, SDSS J084026.15+220446.5, Gaia EDR3 665231545856102400, Gaia DR2 665231545855656576, Gaia DR3 665231545856102400, SDSS J084026.16+220446.5
| Parameter | Unit | Gaia EDR3 | Stilism | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|
| Right ascension | 08 40 26.16 (0.3) | 08 40 26.16 (0.3) | |||
| Declination | 22 04 46.22 (0.2) | 22 04 46.65 (0.2) | |||
| Spectral type | CV | ||||
| Effective temperature | [K] | ||||
| log(g) | [cgs] | ||||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 2.50 (0.4) | 2.50 (0.4) | ||
| Distance | [pc] | 400.61 (60) | 400.61 (60) | ||
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 0.177 (0.4) | 0.177 (0.4) | ||
| Proper motion (declination) | [mas/yr] | -26.692 (0.2) | -26.692 (0.2) | ||
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | |||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | |||||
| H magnitude | |||||
| K magnitude | |||||
| u magnitude | 20.15 (0.06) | ||||
| g magnitude | 19.89 (0.02) | ||||
| r magnitude | 20.11 (0.03) | ||||
| i magnitude | 20.12 (0.04) | ||||
| z magnitude | 18.33 (0.03) | ||||
| G magnitude | 19.37 (0.03) | 19.37 (0.03) | |||
| BP magnitude | 19.44 (0.1) | ||||
| RP magnitude | 18.81 (0.2) | ||||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| 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.