All names: Gaia DR2 6694462518076627840, Gaia DR3 6694462518076627840, TIC 355093383, EC20121-3710, 2MASS J20152380-3701386, EC 20121-3710, GALEX J201523.7-370137, UCAC4 265-189791
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 20 15 23.86 | 20 15 23.81 (0.02) | ||
| Declination | -37 01 38.57 | -37 01 38.71 (0.02) | ||
| Spectral type | sdB+F | F+sd? | ||
| 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] | 0.51 (0.04) | 0.53 (0.03) | |
| Distance | [pc] | 1973.94 (156) | 1887.86 (93) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -5.102 (0.06) | -5.047 (0.02) | |
| Proper motion (declination) | [mas/yr] | 2.432 (0.04) | 2.343 (0.02) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.86 | |||
| V magnitude | 14.65 | |||
| R magnitude | 14.76 (0.1) | |||
| I magnitude | ||||
| J magnitude | 13.84 (0.03) | 13.84 (0.03) | ||
| H magnitude | 13.59 (0.03) | 13.59 (0.03) | ||
| K magnitude | 13.56 (0.04) | 13.56 (0.04) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 14.53 (0.0004) | 14.52 (0.003) | ||
| BP magnitude | 14.64 (0.004) | |||
| RP magnitude | 14.23 (0.002) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.050 | |||
* 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.