All names: Gaia DR2 709583023124944896, Gaia DR3 709583023124944896, SDSS J083957.75+313950.2, GALEX J083957.7+313950, USNO-A2.0 1200-06109126, SDSS J083957.75+313950.3
| Parameter | Unit | Vincent et al. 2024 | Simbad |
|---|---|---|---|
| Right ascension | 08 39 57.70 | 08 39 57.76 (0.2) | |
| Declination | 31 39 50.26 | 31 39 50.27 (0.08) | |
| Spectral type | DB | DB | |
| Effective temperature | [K] | 11130.0 (314) | |
| log(g) | [cgs] | 8.05 (0.06) | |
| Mass | [M☉] | 0.614 (0.05) | |
| log(Luminosity) | [L☉] | ||
| Cooling age | [Gyr] | ||
| log(H/He) | |||
| log(C/He) | |||
| log(Ca/He) | |||
| log(Ca/H) | |||
| Parallax | [mas] | 4.69 | 4.69 (0.2) |
| Distance | [pc] | 213.35 | 213.35 (10) |
| Composition | |||
| Proper motion (right ascension) | [mas/yr] | -54.717 (0.2) | |
| Proper motion (declination) | [mas/yr] | -1.021 (0.2) | |
| Variability | |||
| Magnetic | |||
| Bd | [MG] | ||
| Infrared excess (disk) | |||
| Binarity | |||
| B magnitude | 17.80 (0.3) | ||
| V magnitude | |||
| R magnitude | 18.00 (0.3) | ||
| I magnitude | |||
| J magnitude | |||
| H magnitude | |||
| K magnitude | |||
| u magnitude | 18.76 (0.02) | ||
| g magnitude | 18.66 (0.008) | ||
| r magnitude | 18.79 (0.01) | ||
| i magnitude | 18.97 (0.01) | ||
| z magnitude | 19.19 (0.06) | ||
| G magnitude | 18.71 | 18.71 (0.003) | |
| 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.