All names: WISE J082116.47-082822.8, UCAC4 408-045099, Gaia EDR3 5753155495252812544, UCAC2 28901404, Gaia DR3 5753155495252812544, GALEX J082116.5-082822, WISEA J082116.47-082822.6, GALEXJ08212-0828, TIC 19690565, Gaia DR2 5753155495252812544, 2MASS J08211651-0828232
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 08 21 16.51 (0.03) | 08 21 16.55 | 08 21 16.52 (0.03) | ||
| Declination | -08 28 23.23 (0.03) | -08 28 22.82 | -08 28 23.20 (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] | 0.75 (0.04) | 0.82 (0.07) | 0.75 (0.04) | |
| Distance | [pc] | 1339.58 (78) | 1220.26 (106) | 1339.58 (78) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -3.538 (0.05) | -3.53 (0.1) | -3.538 (0.05) | |
| Proper motion (declination) | [mas/yr] | -1.655 (0.04) | -1.685 (0.07) | -1.655 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.94 (0.02) | ||||
| V magnitude | 15.11 (0.04) | ||||
| R magnitude | 15.54 (0.1) | ||||
| I magnitude | |||||
| J magnitude | 15.73 (0.07) | 15.73 (0.07) | |||
| H magnitude | 15.66 (0.1) | 15.66 (0.1) | |||
| K magnitude | 15.51 | ||||
| u magnitude | |||||
| g magnitude | 14.90 (0.04) | ||||
| r magnitude | 15.29 (0.04) | ||||
| i magnitude | 15.62 (0.2) | ||||
| z magnitude | |||||
| G magnitude | 15.07 (0.003) | 15.08 (0.0007) | 15.07 (0.003) | ||
| BP magnitude | 14.94 (0.004) | 14.89 (0.006) | |||
| RP magnitude | 15.32 (0.005) | 15.32 (0.004) | |||
| Pan g magnitude | 14.91 (0.005) | ||||
| Pan r magnitude | 15.30 (0.002) | ||||
| Pan i magnitude | 15.66 (0.003) | ||||
| Pan z magnitude | 15.91 (0.003) | ||||
| Pan y magnitude | 16.09 (0.006) | ||||
| E(B-V) | 0.054 | ||||
* 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.