All names: 2MASS J22180535-2017096, EC 22153-2032, Gaia DR2 6821150133317605888, GALEX J221805.2-201710, TIC 206596769, Gaia EDR3 6821150133317605888, UCAC4 349-190402, EC22153-2032, Gaia DR3 6821150133317605888
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 22 18 05.34 (0.04) | 22 18 05.30 | 22 18 05.35 (0.04) | ||
| Declination | -20 17 09.60 (0.04) | -20 17 08.66 | -20 17 09.54 (0.04) | ||
| 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] | 0.94 (0.05) | 1.22 (0.1) | 0.94 (0.05) | |
| Distance | [pc] | 1060.22 (59) | 817.06 (95) | 1060.22 (59) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -12.696 (0.05) | -12.603 (0.2) | -12.696 (0.05) | |
| Proper motion (declination) | [mas/yr] | -3.823 (0.04) | -3.959 (0.1) | -3.823 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.41 (0.01) | ||||
| V magnitude | 14.50 (0.01) | ||||
| R magnitude | 14.89 (0.1) | ||||
| I magnitude | |||||
| J magnitude | 15.10 (0.05) | 15.10 (0.05) | |||
| H magnitude | 15.34 (0.1) | 15.34 (0.1) | |||
| K magnitude | 15.10 (0.2) | 15.10 (0.2) | |||
| u magnitude | |||||
| g magnitude | 14.33 (0.01) | ||||
| r magnitude | 14.83 (0.1) | ||||
| i magnitude | 15.09 (0.06) | ||||
| z magnitude | |||||
| G magnitude | 14.52 (0.003) | 14.54 (0.001) | 14.52 (0.003) | ||
| BP magnitude | 14.40 (0.004) | 14.36 (0.01) | |||
| RP magnitude | 14.75 (0.007) | 14.75 (0.01) | |||
| Pan g magnitude | 14.35 (0.002) | ||||
| Pan r magnitude | 14.78 (0.002) | ||||
| Pan i magnitude | 15.10 (0.002) | ||||
| Pan z magnitude | 15.36 (0.005) | ||||
| Pan y magnitude | 15.54 (0.004) | ||||
| E(B-V) | 0.020 | ||||
* 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.