All names: SDSS J083334.34+554728.9, SBSS 0829+559, Gaia DR3 1033770972853539072, SDSS J083334.34+554728.8, SDSS J083334.35+554728.5, SDSS J083334.33+554728.8, WD 0829+559, GALEX J083334.3+554729, SBSS 0828+559, Gaia EDR3 1033770972853539072, SDSS J083334.35+554728.54, USNO-B1.0 1457-00194082, Gaia DR2 1033770972853539072
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Genest-Beaulieu & Bergeron 2019 (spectroscopic) | Genest-Beaulieu & Bergeron 2019 (photometric) | Gaia DR2 | Stilism | Kepler et al. 2016 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 33 34.33 (0.05) | 08 33 34.34 | 08 33 34.33 (0.07) | 08 33 34.33 | 08 33 34.33 (0.05) | 08 33 33.53 | |||||||
| Declination | 55 47 28.35 (0.05) | 55 47 28.89 | 55 47 28.37 (0.07) | 55 47 28.35 | 55 47 29.11 (0.05) | 55 47 26.52 | |||||||
| Spectral type | DBA | DB | DBA | DB: | DB | ||||||||
| Effective temperature | [K] | 12412.0 | 12428.0 | 13288.0 (88) | 12384.0 (192) | ||||||||
| log(g) | [cgs] | 7.93 | 8.02 | 8.78 (0.06) | 8.02 (0.02) | ||||||||
| Mass | [M☉] | 0.546 | 0.599 | 0.598 (0.02) | |||||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | ||||||||||||
| log(H/He) | -5.313 | ||||||||||||
| log(C/He) | |||||||||||||
| log(Ca/He) | |||||||||||||
| log(Ca/H) | |||||||||||||
| Parallax | [mas] | 9.99 (0.08) | 9.98 (0.1) | 9.99 | 9.99 (0.08) | ||||||||
| Distance | [pc] | 100.10 (0.8) | 100.17 (1) | 100.10 | 100.10 (0.8) | ||||||||
| Composition | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | 0.282113837 (0.07) | 0.244897025 (0.1) | 0.282 (0.07) | |||||||||
| Proper motion (declination) | [mas/yr] | -47.87160414 (0.07) | -47.81304549 (0.1) | -47.872 (0.07) | |||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | 16.30 | ||||||||||||
| V magnitude | |||||||||||||
| R magnitude | 16.90 | ||||||||||||
| I magnitude | |||||||||||||
| J magnitude | |||||||||||||
| H magnitude | |||||||||||||
| K magnitude | |||||||||||||
| u magnitude | 16.68 (0.007) | 16.66 (0.01) | 16.68 (0.007) | ||||||||||
| g magnitude | 16.63 (0.004) | 16.67 (0.02) | 16.64 (0.004) | ||||||||||
| r magnitude | 16.88 (0.005) | 16.90 (0.01) | 16.88 (0.005) | ||||||||||
| i magnitude | 17.06 (0.006) | 17.07 (0.02) | 17.07 (0.006) | ||||||||||
| z magnitude | 17.28 (0.01) | 17.27 (0.02) | 17.27 (0.01) | ||||||||||
| G magnitude | 16.75 (0.004) | 16.77 | 16.75 | 16.75 (0.003) | |||||||||
| BP magnitude | 16.73 (0.004) | 16.69 | |||||||||||
| RP magnitude | 16.77 (0.006) | 16.76 | |||||||||||
| Pan g magnitude | 16.69 (0.003) | ||||||||||||
| Pan r magnitude | 16.89 (0.002) | ||||||||||||
| Pan i magnitude | 17.09 (0.003) | ||||||||||||
| Pan z magnitude | 17.28 (0.005) | ||||||||||||
| Pan y magnitude | 17.42 (0.01) | ||||||||||||
| E(B-V) | 0.005 | ||||||||||||
* 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.