All names: Gaia DR2 6877665653760098304, GALEX J200923.5-150139, Gaia DR3 6877665653760098304
| Parameter | Unit | Vincent et al. 2024 | Simbad |
|---|---|---|---|
| Right ascension | 20 09 23.56 | 20 09 23.55 (0.06) | |
| Declination | -15 01 39.97 | -15 01 39.82 (0.04) | |
| Spectral type | DB | DB | |
| Effective temperature | [K] | 27036.0 (760) | |
| log(g) | [cgs] | 6.54 (0.05) | |
| Mass | [M☉] | 0.189 (0.01) | |
| log(Luminosity) | [L☉] | ||
| Cooling age | [Gyr] | ||
| log(H/He) | |||
| log(C/He) | |||
| log(Ca/He) | |||
| log(Ca/H) | |||
| Parallax | [mas] | 1.82 | 1.82 (0.07) |
| Distance | [pc] | 549.59 | 549.60 (22) |
| Composition | |||
| Proper motion (right ascension) | [mas/yr] | 6.679 (0.08) | |
| Proper motion (declination) | [mas/yr] | -9.058 (0.05) | |
| Variability | |||
| Magnetic | |||
| Bd | [MG] | ||
| Infrared excess (disk) | |||
| Binarity | |||
| B magnitude | |||
| V magnitude | |||
| R magnitude | |||
| I magnitude | |||
| J magnitude | |||
| H magnitude | |||
| K magnitude | |||
| u magnitude | |||
| g magnitude | |||
| r magnitude | |||
| i magnitude | |||
| z magnitude | |||
| G magnitude | 17.02 | 17.02 (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.