All names: TIC 341759634, Gaia DR3 4564990107490999808, Gaia DR2 4564990107490999808, PG 1656+213, WISEA J165821.09+211033.6, 2MASS J16582111+2110336, UCAC4 556-058824, UCAC2 39330770, WISE J165821.09+211033.7, SDSS J165821.11+211033.5, GALEX J165821.2+211033, PG1656+213
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 16 58 21.10 | 16 58 21.11 (0.02) | ||
| Declination | 21 10 33.93 | 21 10 33.60 (0.02) | ||
| Spectral type | sdB+K | |||
| 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] | 0.13 (0.04) | 0.18 (0.03) | |
| Distance | [pc] | 7501.88 (2482) | 5571.03 (854) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 2.391 (0.06) | 2.467 (0.02) | |
| Proper motion (declination) | [mas/yr] | -5.789 (0.07) | -5.722 (0.02) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.65 (0.01) | |||
| V magnitude | 14.72 (0.01) | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 14.93 (0.04) | 14.93 (0.04) | ||
| H magnitude | 14.97 (0.07) | 14.97 (0.07) | ||
| K magnitude | 15.10 (0.1) | 15.10 (0.1) | ||
| u magnitude | 14.68 (0.005) | |||
| g magnitude | 14.44 (0.004) | 14.64 (0.01) | ||
| r magnitude | 14.80 (0.005) | 14.86 (0.01) | ||
| i magnitude | 15.76 (0.006) | 15.13 (0.01) | ||
| z magnitude | 15.28 (0.006) | |||
| G magnitude | 14.64 (0.0004) | 14.62 (0.003) | ||
| BP magnitude | 14.54 (0.005) | |||
| RP magnitude | 14.73 (0.002) | |||
| Pan g magnitude | 14.51 (0.006) | |||
| Pan r magnitude | 14.80 (0.003) | |||
| Pan i magnitude | 15.07 (0.001) | |||
| Pan z magnitude | 15.26 (0.002) | |||
| Pan y magnitude | 15.37 (0.003) | |||
| E(B-V) | 0.043 | |||
* 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.