All names: 2MASS J20372802-1302165, GALEX J203727.9-130216, UCAC4 385-154012, GALEXJ20374-1302, LB 356, Gaia EDR3 6899943919703032960, Gaia DR2 6899943919703032960, Gaia DR3 6899943919703032960, EC 20347-1312
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 20 37 28.02 (0.03) | 20 37 27.88 | 20 37 28.03 (0.03) | ||
| Declination | -13 02 16.84 (0.02) | -13 02 17.13 | -13 02 16.56 (0.02) | ||
| 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] | 1.09 (0.04) | 1.15 (0.06) | 1.09 (0.04) | |
| Distance | [pc] | 919.62 (32) | 871.08 (46) | 919.62 (32) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -7.576 (0.04) | -7.556 (0.1) | -7.576 (0.04) | |
| Proper motion (declination) | [mas/yr] | -17.233 (0.03) | -17.234 (0.07) | -17.233 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.25 (0.01) | ||||
| V magnitude | 14.34 (0.01) | ||||
| R magnitude | 14.59 (0.1) | ||||
| I magnitude | |||||
| J magnitude | 14.87 (0.03) | 14.87 (0.03) | |||
| H magnitude | 14.89 (0.07) | 14.89 (0.07) | |||
| K magnitude | 14.93 (0.1) | 14.93 (0.1) | |||
| u magnitude | |||||
| g magnitude | 14.20 (0.01) | ||||
| r magnitude | 14.52 (0.01) | ||||
| i magnitude | 14.77 (0.01) | ||||
| z magnitude | |||||
| G magnitude | 14.32 (0.003) | 14.33 (0.0005) | 14.32 (0.003) | ||
| BP magnitude | 14.20 (0.003) | 14.14 (0.009) | |||
| RP magnitude | 14.55 (0.004) | 14.55 (0.002) | |||
| Pan g magnitude | |||||
| Pan r magnitude | 18.85 (0.02) | ||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | 18.21 (0.09) | ||||
| E(B-V) | 0.052 | ||||
* 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.