All names: Gaia DR3 662674940801968256, WD 0828+190, [HHD2009] SDSS J0831+1850, SDSS J083115.77+185024.8, SDSS J083115.76+185024.8, Gaia DR2 662674940801968256, Gaia EDR3 662674940801968256, SDSS J083115.76+185024.7
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 31 15.76 (1) | 08 31 15.77 | 08 31 15.77 (7) | 08 31 15.77 (1) | 08 31 15.91 | 08 31 15.77 | |||
| Declination | 18 50 24.89 (0.9) | 18 50 24.77 | 18 50 24.89 (3) | 18 50 24.97 (0.9) | 18 50 20.40 | 18 50 24.82 | |||
| Spectral type | DA+M | DA2.5 | DA+M | ||||||
| Effective temperature | [K] | 8979.0 (165) | |||||||
| log(g) | [cgs] | 8.36 (0.2) | |||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 1.30 (2) | 1.30 (2) | ||||||
| Distance | [pc] | 768.39 (916) | 768.40 (916) | ||||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -3.396203182 (2) | -3.396 (2) | ||||||
| Proper motion (declination) | [mas/yr] | -4.884396888 (1) | -4.884 (1) | ||||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | yes | WDMS | |||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 20.48 (0.06) | 20.45 (0.07) | 20.45 | 20.45 (0.06) | |||||
| g magnitude | 20.31 (0.02) | 20.32 (0.02) | 20.30 | 20.32 (0.02) | |||||
| r magnitude | 20.49 (0.03) | 20.49 (0.03) | 20.50 | 20.51 (0.03) | |||||
| i magnitude | 20.02 (0.03) | 20.03 (0.04) | 20.03 | 20.06 (0.04) | |||||
| z magnitude | 19.38 (0.07) | 19.39 (0.07) | 19.41 | 19.43 (0.07) | |||||
| G magnitude | 20.43 (0.07) | 20.38 | 20.43 (0.008) | ||||||
| BP magnitude | 20.48 (0.07) | 20.39 | |||||||
| RP magnitude | 19.61 (0.08) | 19.41 | |||||||
| Pan g magnitude | 20.33 (0.02) | ||||||||
| Pan r magnitude | 20.47 (0.02) | ||||||||
| Pan i magnitude | 20.00 (0.01) | ||||||||
| Pan z magnitude | 19.57 (0.02) | ||||||||
| Pan y magnitude | 19.24 (0.04) | ||||||||
| E(B-V) | 0.032 | ||||||||
* 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.