All names: Gaia DR3 6422817828153910912, Gaia DR2 6422817828153910912, UCAC4 102-104375, TIC 371801053, EC 20178-6951, 2MASS J20225213-6942088, EC20178-6951
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 20 22 52.18 | 20 22 52.13 (0.02) | ||
| Declination | -69 42 07.70 | -69 42 08.71 (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] | 0.21 (0.06) | 0.24 (0.04) | |
| Distance | [pc] | 4791.57 (1297) | 4246.28 (716) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 5.311 (0.06) | 5.262 (0.03) | |
| Proper motion (declination) | [mas/yr] | -4.761 (0.07) | -4.897 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 16.44 | |||
| V magnitude | 16.19 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.49 (0.05) | 15.49 (0.05) | ||
| H magnitude | 15.08 (0.08) | 15.08 (0.08) | ||
| K magnitude | 15.20 (0.1) | 15.20 (0.1) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 16.09 (0.0008) | 16.07 (0.003) | ||
| BP magnitude | 16.22 (0.004) | |||
| RP magnitude | 15.80 (0.003) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.036 | |||
* 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.