All names: SDSS J082428.40+512601.5, Gaia DR3 1028374599849118976, SDSS J082428.41+512601.6, Gaia EDR3 1028374599849118976, Gaia DR2 1028374599849118976, GALEX J082428.3+512602, SDSSJ082428.41+512601.6, SDSS J082428.41+512601.5, SDSS J082428.40+512601.6, TIC 802232206
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Geier 2020 | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 24 28.41 (0.2) | 08 24 28.41 | 08 24 28.41 | 08 24 28.41 (0.2) | 08 24 28.41 (0.2) | 08 24 28.41 | |||
| Declination | 51 26 01.59 (0.1) | 51 26 01.61 | 51 26 01.60 | 51 26 01.59 (0.1) | 51 26 01.60 (0.1) | 51 26 01.53 | |||
| Spectral type | sdB | sdB | SDB | ||||||
| Effective temperature | [K] | 7723.0 (53) | |||||||
| log(g) | [cgs] | 7.97 (0.1) | |||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | -0.01 (0.2) | 0.24 (0.2) | 0.24 (0.2) | 0.24 (0.2) | ||||
| Distance | [pc] | 4203.45 (4030) | 4203.19 (4030) | 4203.45 (4030) | |||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 0.935281339 (0.2) | 1.118 (0.3) | 1.117839714 (0.3) | 0.935 (0.2) | -0.5 | |||
| Proper motion (declination) | [mas/yr] | -0.620643774 (0.2) | -0.53 (0.3) | -0.530120636 (0.3) | -0.621 (0.2) | -8.5 | |||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 19.04 (0.02) | 19.04 (0.02) | 19.04 (0.02) | 19.04 (0.03) | |||||
| g magnitude | 18.73 (0.008) | 18.73 (0.008) | 18.73 (0.008) | 18.73 (0.02) | |||||
| r magnitude | 18.74 (0.01) | 18.74 (0.01) | 18.74 (0.01) | 18.76 (0.01) | |||||
| i magnitude | 18.80 (0.01) | 18.80 (0.01) | 18.80 (0.01) | 18.82 (0.02) | |||||
| z magnitude | 18.88 (0.05) | 18.88 (0.05) | 18.87 (0.05) | 18.90 (0.05) | |||||
| G magnitude | 18.68 (0.03) | 18.72 (0.003) | 18.72 | 18.68 (0.003) | |||||
| BP magnitude | 18.81 (0.03) | 18.83 (0.02) | 18.83 | ||||||
| RP magnitude | 18.48 (0.03) | 18.49 (0.03) | 18.49 | ||||||
| Pan g magnitude | 18.76 (0.005) | 18.76 (0.005) | |||||||
| Pan r magnitude | 18.76 (0.01) | 18.76 (0.01) | |||||||
| Pan i magnitude | 18.81 (0.005) | 18.81 (0.005) | |||||||
| Pan z magnitude | 18.89 (0.01) | 18.89 (0.01) | |||||||
| Pan y magnitude | 18.87 (0.03) | 18.87 (0.03) | |||||||
| E(B-V) | 0.034 | ||||||||
* 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.