All names: 2MASS J20072233+0418044, GALEXJ20073+0418, Gaia EDR3 4247553850650126720, GALEX J200722.3+041804, Gaia DR3 4247553850650126720, TIC 421817879, Gaia DR2 4247553850650126720, UCAC4 472-113614
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 20 07 22.33 (0.03) | 20 07 22.35 | 20 07 22.33 (0.03) | ||
| Declination | 04 18 04.20 (0.02) | 04 18 04.14 | 04 18 04.36 (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] | 1.13 (0.04) | 1.18 (0.05) | 1.13 (0.04) | |
| Distance | [pc] | 886.45 (30) | 850.63 (34) | 886.45 (30) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 0.873 (0.04) | 0.86 (0.08) | 0.873 (0.04) | |
| Proper motion (declination) | [mas/yr] | -9.436 (0.02) | -9.457 (0.05) | -9.436 (0.02) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | |||||
| V magnitude | |||||
| R magnitude | 14.80 (0.03) | ||||
| I magnitude | |||||
| J magnitude | 15.09 (0.05) | 15.09 (0.05) | |||
| H magnitude | 15.20 (0.09) | 15.20 (0.09) | |||
| K magnitude | 15.23 (0.2) | 15.23 (0.2) | |||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 14.62 (0.003) | 14.64 (0.0006) | 14.62 (0.003) | ||
| BP magnitude | 14.51 (0.003) | 14.44 (0.005) | |||
| RP magnitude | 14.81 (0.004) | 14.81 (0.003) | |||
| Pan g magnitude | 14.50 (0.006) | ||||
| Pan r magnitude | 14.85 (0.003) | ||||
| Pan i magnitude | 15.15 (0.002) | ||||
| Pan z magnitude | 15.39 (0.003) | ||||
| Pan y magnitude | 15.55 (0.006) | ||||
| E(B-V) | 0.085 | ||||
* 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.