All names: SDSS J082011.22+584235.2, GALEX J082011.1+584234, Gaia DR2 1035619453763003904, Gaia DR3 1035619453763003904, TIC 81104679, SDSS J082011.22+584235.1, Gaia EDR3 1035619453763003904, 2MASS J08201126+5842356, SDSS J082011.21+584235.2, WIRED J082011.21+584235.1
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 20 11.23 (0.1) | 08 20 11.22 | 08 20 11.23 (0.1) | 08 20 11.21 (0.1) | 08 20 11.22 | ||||
| Declination | 58 42 35.05 (0.1) | 58 42 35.21 | 58 42 35.06 (0.1) | 58 42 35.21 (0.1) | 58 42 35.18 | ||||
| Spectral type | DA+M | DA+M | DA+MS | ||||||
| Effective temperature | [K] | 10658.0 (86) | |||||||
| log(g) | [cgs] | 8.15 (0.07) | |||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 3.77 (0.1) | 3.64 (0.2) | 3.77 (0.1) | |||||
| Distance | [pc] | 265.13 (10) | 274.92 (15) | 265.13 (10) | |||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 10.67608371 (0.1) | 10.28093038 (0.3) | 10.676 (0.1) | |||||
| Proper motion (declination) | [mas/yr] | -10.01741444 (0.1) | -10.0813618 (0.3) | -10.017 (0.1) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | WDMS | WDMS | |||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 16.49 (0.1) | ||||||||
| H magnitude | 15.76 (0.1) | ||||||||
| K magnitude | 15.65 (0.2) | ||||||||
| u magnitude | 19.05 (0.02) | 19.06 (0.02) | 19.05 (0.03) | ||||||
| g magnitude | 18.65 (0.008) | 18.64 (0.008) | 18.63 (0.04) | ||||||
| r magnitude | 18.71 (0.009) | 18.70 (0.009) | 18.75 (0.02) | ||||||
| i magnitude | 18.27 (0.01) | 18.26 (0.01) | 18.28 (0.02) | ||||||
| z magnitude | 17.69 (0.02) | 17.68 (0.02) | 17.71 (0.03) | ||||||
| G magnitude | 18.42 (0.03) | 18.44 | 18.42 (0.003) | ||||||
| BP magnitude | 18.71 (0.03) | 18.75 | |||||||
| RP magnitude | 17.85 (0.01) | 17.86 | |||||||
| Pan g magnitude | 18.65 (0.009) | ||||||||
| Pan r magnitude | 18.70 (0.007) | ||||||||
| Pan i magnitude | 18.29 (0.003) | ||||||||
| Pan z magnitude | 17.83 (0.007) | ||||||||
| Pan y magnitude | 17.55 (0.01) | ||||||||
| E(B-V) | 0.019 | ||||||||
* 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.