All names: Gaia DR2 1794184349811337728, UCAC4 564-126734, Gaia DR3 1794184349811337728, WISE J214620.63+224503.1, 2MASS J21462067+2245037, LAMOSTJ214620.68+224503.7, GALEX J214620.6+224503, Gaia EDR3 1794184349811337728, LAMOST J214620.68+224503.7
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 21 46 20.68 (0.04) | 21 46 20.68 | 21 46 20.68 (0.04) | ||
| Declination | 22 45 03.72 (0.05) | 22 45 03.77 | 22 45 03.79 (0.05) | ||
| Spectral type | sdB | sdB/sdO | |||
| Effective temperature | [K] | 30412.0 (516) | |||
| log(g) | [cgs] | 5.54 (0.1) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.54 (0.05) | 0.58 (0.08) | 0.54 (0.05) | |
| Distance | [pc] | 1853.22 (171) | 1725.63 (241) | 1853.22 (171) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -2.033 (0.05) | -2.079 (0.1) | -2.033 (0.05) | |
| Proper motion (declination) | [mas/yr] | -4.672 (0.05) | -4.859 (0.2) | -4.672 (0.05) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 16.14 (0.07) | ||||
| V magnitude | 16.29 (0.09) | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 16.36 (0.1) | 16.36 (0.1) | |||
| H magnitude | 16.43 | ||||
| K magnitude | 16.64 | ||||
| u magnitude | 15.93 (0.005) | ||||
| g magnitude | 16.03 (0.003) | 16.03 (0.02) | |||
| r magnitude | 16.40 (0.004) | 16.43 (0.1) | |||
| i magnitude | 16.66 (0.005) | 16.30 (0.01) | |||
| z magnitude | 16.93 (0.01) | ||||
| G magnitude | 16.20 (0.003) | 16.24 (0.002) | 16.20 (0.003) | ||
| BP magnitude | 16.12 (0.006) | 16.08 (0.01) | |||
| RP magnitude | 16.38 (0.007) | 16.38 (0.008) | |||
| Pan g magnitude | 16.09 (0.002) | ||||
| Pan r magnitude | 16.42 (0.003) | ||||
| Pan i magnitude | 16.71 (0.003) | ||||
| Pan z magnitude | 16.95 (0.006) | ||||
| Pan y magnitude | 17.09 (0.008) | ||||
| E(B-V) | 0.065 | ||||
* 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.