All names: Gaia DR3 6447905144446115712, 2MASS J20043297-5653441, TIC 421999342, EC20005-5702, UCAC4 166-209488, Gaia EDR3 6447905144446115712, EC 20005-5702, GALEX J200433.0-565341, Gaia DR2 6447905144446115712
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 20 04 32.99 (0.03) | 20 04 33.12 | 20 04 32.97 (0.03) | ||
| Declination | -56 53 44.44 (0.03) | -56 53 43.19 | -56 53 44.24 (0.03) | ||
| 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] | 0.99 (0.05) | 0.84 (0.07) | 0.99 (0.05) | |
| Distance | [pc] | 1006.24 (46) | 1189.91 (97) | 1006.24 (46) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 9.36 (0.03) | 9.321 (0.09) | 9.36 (0.03) | |
| Proper motion (declination) | [mas/yr] | -12.902 (0.04) | -13.038 (0.09) | -12.902 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.58 | ||||
| V magnitude | 14.86 | ||||
| R magnitude | 15.36 (0.2) | ||||
| I magnitude | |||||
| J magnitude | 15.49 (0.05) | 15.49 (0.05) | |||
| H magnitude | 15.85 (0.2) | 15.85 (0.2) | |||
| K magnitude | 15.43 (0.2) | 15.43 (0.2) | |||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 14.80 (0.003) | 14.82 (0.0007) | 14.80 (0.003) | ||
| BP magnitude | 14.66 (0.003) | 14.59 (0.01) | |||
| RP magnitude | 15.08 (0.004) | 15.07 (0.003) | |||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| E(B-V) | 0.032 | ||||
* 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.