All names: Gaia DR3 4227333247694932352, Gaia DR2 4227333247694932352, SDSS J205703.71-003056.3
| Parameter | Unit | Vincent et al. 2024 | Simbad |
|---|---|---|---|
| Right ascension | 20 57 03.67 | 20 57 03.73 (0.2) | |
| Declination | -00 30 57.63 | -00 30 56.18 (0.1) | |
| Spectral type | DA | DA | |
| Effective temperature | [K] | 9315.0 (294) | |
| log(g) | [cgs] | 7.95 (0.08) | |
| Mass | [M☉] | 0.568 (0.07) | |
| log(Luminosity) | [L☉] | ||
| Cooling age | [Gyr] | ||
| log(H/He) | |||
| log(C/He) | |||
| log(Ca/He) | |||
| log(Ca/H) | |||
| Parallax | [mas] | 5.02 | 5.02 (0.2) |
| Distance | [pc] | 199.33 | 199.33 (1e+01) |
| Composition | |||
| Proper motion (right ascension) | [mas/yr] | -52.955 (0.3) | |
| Proper motion (declination) | [mas/yr] | -90.494 (0.2) | |
| Variability | |||
| Magnetic | |||
| Bd | [MG] | ||
| Infrared excess (disk) | |||
| Binarity | |||
| B magnitude | |||
| V magnitude | |||
| R magnitude | |||
| I magnitude | |||
| J magnitude | 16.73 (0.02) | ||
| H magnitude | |||
| K magnitude | 15.85 (0.03) | ||
| u magnitude | 19.35 (0.03) | ||
| g magnitude | 18.91 (0.01) | ||
| r magnitude | 18.97 (0.01) | ||
| i magnitude | 19.09 (0.03) | ||
| z magnitude | 19.21 (0.07) | ||
| G magnitude | 18.90 | 18.90 (0.004) | |
| 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.