All names: UCAC4 711-056411, SBSS 1649+522, Gaia DR2 1413662788690638848, GALEX J165039.6+520734, 2MASS J16503955+5207341, PG1649+522, Gaia DR3 1413662788690638848, SDSS J165039.57+520734.3, PG 1649+522, Gaia EDR3 1413662788690638848, TIC 274385475, WISEA J165039.56+520734.5, WISE J165039.60+520734.5
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 16 50 39.57 (0.05) | 16 50 39.71 | 16 50 39.58 (0.05) | ||
| Declination | 52 07 34.10 (0.05) | 52 07 36.00 | 52 07 34.39 (0.05) | ||
| 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] | 0.54 (0.06) | 0.57 (0.07) | 0.54 (0.06) | |
| Distance | [pc] | 1843.32 (193) | 1740.04 (208) | 1843.32 (193) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -10.599 (0.07) | -11.316 (0.1) | -10.599 (0.07) | |
| Proper motion (declination) | [mas/yr] | -18.303 (0.08) | -18.119 (0.2) | -18.303 (0.08) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 16.02 (0.05) | ||||
| V magnitude | 16.16 (0.01) | ||||
| R magnitude | 16.48 | ||||
| I magnitude | |||||
| J magnitude | 16.89 (0.1) | 16.89 (0.1) | |||
| H magnitude | 16.28 | ||||
| K magnitude | 15.93 | ||||
| u magnitude | 15.87 (0.005) | ||||
| g magnitude | 15.98 (0.004) | ||||
| r magnitude | 16.48 (0.004) | ||||
| i magnitude | 16.81 (0.005) | ||||
| z magnitude | 17.10 (0.01) | ||||
| G magnitude | 16.25 (0.003) | 16.26 (0.001) | 16.25 (0.003) | ||
| BP magnitude | 16.13 (0.006) | 16.07 (0.008) | |||
| RP magnitude | 16.51 (0.007) | 16.48 (0.009) | |||
| Pan g magnitude | 16.08 (0.005) | ||||
| Pan r magnitude | 16.49 (0.003) | ||||
| Pan i magnitude | 16.83 (0.002) | ||||
| Pan z magnitude | 17.10 (0.006) | ||||
| Pan y magnitude | 17.27 (0.006) | ||||
| E(B-V) | 0.023 | ||||
* 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.