All names: WEB 7961, PSR J0823+0159, SBC9 511, SDSS J082309.78+015912.5, WD 0820+021, PSR B0820+02
| Parameter | Unit | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|
| Right ascension | 08 23 09.79 (166) | 08 23 09.70 | |
| Declination | 01 59 12.56 (140) | 01 59 06.36 | |
| Spectral type | DA | DA? | |
| 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] | 0.38 (0.1) | |
| Distance | [pc] | 2659.57 (912) | |
| Composition | |||
| Proper motion (right ascension) | [mas/yr] | -3.797 (0.4) | |
| Proper motion (declination) | [mas/yr] | 0.171 (0.3) | |
| Variability | |||
| Magnetic | |||
| Bd | [MG] | ||
| Infrared excess (disk) | |||
| Binarity | yes | ||
| B magnitude | |||
| V magnitude | |||
| R magnitude | |||
| I magnitude | |||
| J magnitude | |||
| H magnitude | |||
| K magnitude | |||
| u magnitude | 22.70 (0.4) | ||
| g magnitude | 22.62 (0.2) | ||
| r magnitude | 23.26 (0.4) | ||
| i magnitude | 23.30 (0.6) | ||
| z magnitude | 21.47 (0.4) | ||
| G magnitude | |||
| BP magnitude | |||
| RP magnitude | |||
| Pan g magnitude | |||
| Pan r magnitude | |||
| Pan i magnitude | |||
| Pan z magnitude | |||
| Pan y magnitude | |||
| E(B-V) | |||
* 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.