All names: 2MASS J20561229+0525149, Gaia DR3 1734921287254144640, SDSSJ205612.30+052514.9, SDSS J205612.30+052514.9, Gaia EDR3 1734921287254144640, GALEX J205612.3+052515, TIC 396333658, Gaia DR2 1734921287254144640
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 20 56 12.31 (0.05) | 20 56 12.31 | 20 56 12.31 (0.05) | ||
| Declination | 05 25 14.87 (0.03) | 05 25 14.91 | 05 25 14.86 (0.03) | ||
| Spectral type | sd | sd | |||
| 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] | 0.66 (0.06) | 0.70 (0.08) | 0.66 (0.06) | |
| Distance | [pc] | 1510.57 (136) | 1437.81 (169) | 1510.57 (136) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -0.655 (0.06) | -0.73 (0.1) | -0.655 (0.06) | |
| Proper motion (declination) | [mas/yr] | 0.278 (0.05) | 0.07 (0.1) | 0.278 (0.05) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | |||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 16.82 (0.1) | 16.82 (0.1) | |||
| H magnitude | 16.83 | ||||
| K magnitude | 16.84 | ||||
| u magnitude | 15.88 (0.005) | 15.90 (0.02) | |||
| g magnitude | 16.11 (0.004) | 16.09 (0.007) | |||
| r magnitude | 16.56 (0.004) | 16.56 (0.009) | |||
| i magnitude | 16.88 (0.005) | 16.88 (0.008) | |||
| z magnitude | 17.17 (0.01) | 17.16 (0.01) | |||
| G magnitude | 16.34 (0.003) | 16.37 (0.001) | 16.34 (0.003) | ||
| BP magnitude | 16.23 (0.004) | 16.18 (0.006) | |||
| RP magnitude | 16.57 (0.006) | 16.57 (0.006) | |||
| Pan g magnitude | 16.20 (0.004) | ||||
| Pan r magnitude | 16.58 (0.004) | ||||
| Pan i magnitude | 16.89 (0.002) | ||||
| Pan z magnitude | 17.16 (0.004) | ||||
| Pan y magnitude | 17.33 (0.008) | ||||
| E(B-V) | 0.063 | ||||
* 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.