All names: 2MASS J08201755-0500484, Gaia DR2 3065952959618065152, TIC 178663612, SDSS J082017.55-050048.4, GALEXJ08202-0500, Gaia EDR3 3065952959618065152, GALEX J082017.6-050047, Gaia DR3 3065952959618065152
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 08 20 17.55 (0.03) | 08 20 17.61 | 08 20 17.55 (0.03) | ||
| Declination | -05 00 48.57 (0.02) | -05 00 47.93 | -05 00 48.47 (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] | 1.05 (0.04) | 0.95 (0.05) | 1.05 (0.04) | |
| Distance | [pc] | 956.11 (39) | 1047.12 (53) | 956.11 (39) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 1.449 (0.04) | 1.521 (0.1) | 1.449 (0.04) | |
| Proper motion (declination) | [mas/yr] | -6.337 (0.04) | -6.172 (0.06) | -6.337 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | |||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 15.42 (0.06) | 15.42 (0.06) | |||
| H magnitude | 15.40 (0.1) | 15.40 (0.1) | |||
| K magnitude | 15.19 | ||||
| u magnitude | 14.54 (0.004) | 14.57 (0.02) | |||
| g magnitude | 14.59 (0.003) | 14.61 (0.01) | |||
| r magnitude | 15.04 (0.003) | 15.05 (0.008) | |||
| i magnitude | 15.37 (0.004) | 15.38 (0.01) | |||
| z magnitude | 15.67 (0.006) | 15.67 (0.01) | |||
| G magnitude | 14.83 (0.003) | 14.85 (0.0004) | 14.83 (0.003) | ||
| BP magnitude | 14.71 (0.003) | 14.68 (0.004) | |||
| RP magnitude | 15.07 (0.004) | 15.07 (0.002) | |||
| Pan g magnitude | 14.67 (0.005) | ||||
| Pan r magnitude | 15.06 (0.003) | ||||
| Pan i magnitude | 15.41 (0.003) | ||||
| Pan z magnitude | 15.66 (0.006) | ||||
| Pan y magnitude | 15.82 (0.005) | ||||
| E(B-V) | 0.043 | ||||
* 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.