All names: Gaia DR2 6887781534394985216, GALEX J204641.6-135643, Gaia EDR3 6887781534394985216, 2MASS J20464162-1356441, EC20439-1407, UCAC4 381-164065, EC 20439-1407, Gaia DR3 6887781534394985216
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 20 46 41.60 (0.04) | 20 46 41.63 | 20 46 41.60 (0.04) | ||
| Declination | -13 56 44.26 (0.02) | -13 56 44.09 | -13 56 44.13 (0.02) | ||
| Spectral type | sdB | sdB | |||
| 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] | 0.96 (0.05) | 0.94 (0.09) | 0.96 (0.05) | |
| Distance | [pc] | 1038.21 (56) | 1064.62 (107) | 1038.21 (56) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -1.136 (0.05) | -1.198 (0.1) | -1.136 (0.05) | |
| Proper motion (declination) | [mas/yr] | -8.133 (0.04) | -8.018 (0.07) | -8.133 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.24 | ||||
| V magnitude | 15.55 | ||||
| R magnitude | 15.81 (0.3) | ||||
| I magnitude | |||||
| J magnitude | 16.09 (0.1) | 16.09 (0.1) | |||
| H magnitude | 16.07 (0.2) | 16.07 (0.2) | |||
| K magnitude | 15.81 (0.3) | 15.81 (0.3) | |||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 15.47 (0.003) | 15.49 (0.0006) | 15.47 (0.003) | ||
| BP magnitude | 15.34 (0.003) | 15.29 (0.007) | |||
| RP magnitude | 15.73 (0.005) | 15.72 (0.003) | |||
| Pan g magnitude | 15.31 (0.002) | ||||
| Pan r magnitude | 15.71 (0.001) | ||||
| Pan i magnitude | 16.05 (0.001) | ||||
| Pan z magnitude | 16.33 (0.007) | ||||
| Pan y magnitude | 16.51 (0.01) | ||||
| E(B-V) | 0.042 | ||||
* 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.