All names: WISE J201127.56+044154.1, Gaia EDR3 4247678984519316480, 2MASS J20112756+0441540, GALEXJ20114+0441, Gaia DR3 4247677820585740672, UCAC4 474-112908, Gaia DR2 4247677820585740672, WISEA J201127.56+044154.1, UCAC2 33480392, TIC 405058817, GALEX J201127.5+044154
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 20 11 31.55 (0.6) | 20 11 27.51 | 20 11 27.57 (0.03) | ||
| Declination | 04 43 00.82 (0.4) | 04 41 54.76 | 04 41 54.13 (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] | 3.88 (0.9) | 1.50 (0.05) | 1.49 (0.04) | |
| Distance | [pc] | 257.77 (57) | 664.63 (23) | 670.74 (18) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -4.232 (0.8) | 2.607 (0.09) | 2.508 (0.04) | |
| Proper motion (declination) | [mas/yr] | -5.608 (0.6) | 0.985 (0.07) | 1.111 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 13.13 (0.01) | ||||
| V magnitude | 13.19 (0.01) | ||||
| R magnitude | 13.66 (0.1) | ||||
| I magnitude | |||||
| J magnitude | 13.86 (0.03) | 13.86 (0.03) | |||
| H magnitude | 13.98 (0.05) | 13.98 (0.05) | |||
| K magnitude | 14.18 (0.07) | 14.18 (0.07) | |||
| u magnitude | |||||
| g magnitude | 13.15 (0.01) | ||||
| r magnitude | 13.40 (0.01) | ||||
| i magnitude | 13.81 (0.01) | ||||
| z magnitude | |||||
| G magnitude | 20.23 (0.007) | 13.35 (0.0006) | 13.33 (0.003) | ||
| BP magnitude | 20.76 (0.1) | 13.16 (0.008) | |||
| RP magnitude | 19.42 (0.05) | 13.55 (0.002) | |||
| Pan g magnitude | 13.35 | ||||
| Pan r magnitude | 13.57 (0) | ||||
| Pan i magnitude | 13.89 (0.001) | ||||
| Pan z magnitude | 14.17 (0.002) | ||||
| Pan y magnitude | 14.30 (0.004) | ||||
| E(B-V) | 0.076 | ||||
* 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.