All names: GALEX J200412.7-831318, 2MASS J20041297-8313182, EC19534-8321, EC 19534-8321, TIC 346795807, Gaia DR2 6347405314901048960, Gaia DR3 6347405314901048960, JL 35
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 20 04 13.02 | 20 04 12.90 (0.03) | ||
| Declination | -83 13 18.16 | -83 13 18.41 (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] | 0.61 (0.05) | 0.49 (0.04) | |
| Distance | [pc] | 1650.71 (144) | 2056.77 (169) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 7.201 (0.08) | 7.48 (0.05) | |
| Proper motion (declination) | [mas/yr] | -3.72 (0.1) | -3.814 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 16.54 | |||
| V magnitude | 16.43 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.40 (0.05) | 15.40 (0.05) | ||
| H magnitude | 15.04 (0.07) | 15.04 (0.07) | ||
| K magnitude | 15.03 (0.2) | 15.03 (0.2) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 16.28 (0.001) | 16.26 (0.003) | ||
| BP magnitude | 16.37 (0.006) | |||
| RP magnitude | 15.99 (0.005) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.156 | |||
* 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.