All names: Gaia DR2 1942860896239308672, GALEX J232557.7+492133, SDSSJ232557.71+492132.9, Gaia EDR3 1942860896239308672, SDSS J232557.70+492132.9, SDSS J232557.72+492132.9, UCAC4 697-123400, 2MASS J23255770+4921328, SDSS J232557.72+492132.93, Gaia DR3 1942860896239308672
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 23 25 57.71 (0.02) | 23 25 57.71 | 23 25 57.71 | 23 25 57.71 (0.03) | 23 25 57.71 (0.02) | ||||
| Declination | 49 21 32.94 (0.02) | 49 21 32.92 | 49 21 32.90 | 49 21 32.94 (0.02) | 49 21 32.97 (0.02) | ||||
| Spectral type | sdB+MS | sdB | sdB | ||||||
| Effective temperature | [K] | 20561.0 (80) | |||||||
| log(g) | [cgs] | 5.50 (0.001) | |||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.09 (0.02) | 0.02 (0.04) | 0.02 (0.04) | 0.09 (0.02) | ||||
| Distance | [pc] | 11581.86 (3093) | 42735.04 (66294) | 42801.04 (66575) | 11587.49 (3102) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -1.433125328 (0.02) | -1.359 (0.06) | -1.35855575 (0.06) | -1.433 (0.02) | ||||
| Proper motion (declination) | [mas/yr] | -2.079768749 (0.02) | -2.07 (0.05) | -2.069513711 (0.05) | -2.08 (0.02) | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 14.79 (0.02) | ||||||||
| V magnitude | 14.76 (0.01) | ||||||||
| R magnitude | 14.77 (0.04) | ||||||||
| I magnitude | |||||||||
| J magnitude | 14.56 (0.04) | 14.56 (0.04) | |||||||
| H magnitude | 14.52 (0.07) | 14.52 (0.07) | |||||||
| K magnitude | 14.34 (0.07) | 14.34 (0.07) | |||||||
| u magnitude | 15.36 (0.004) | 15.36 (0.004) | 15.34 (0.01) | 15.36 (0.004) | |||||
| g magnitude | 14.63 (0.003) | 14.63 (0.003) | 14.69 (0.007) | 14.69 (0.01) | |||||
| r magnitude | 14.82 (0.003) | 14.81 (0.003) | 14.83 (0.009) | 14.84 (0.01) | |||||
| i magnitude | 14.97 (0.004) | 14.95 (0.004) | 14.96 (0.009) | 15.02 (0.01) | |||||
| z magnitude | 15.08 (0.005) | 15.07 (0.005) | 15.07 (0.02) | 15.07 (0.005) | |||||
| G magnitude | 14.71 (0.001) | 14.73 (0.0003) | 14.73 | 14.71 (0.003) | |||||
| BP magnitude | 14.74 (0.001) | 14.73 (0.003) | 14.73 | ||||||
| RP magnitude | 14.63 (0.001) | 14.63 (0.003) | 14.63 | ||||||
| Pan g magnitude | 14.70 (0.002) | 14.70 (0.002) | |||||||
| Pan r magnitude | 14.82 (0.002) | 14.82 (0.002) | |||||||
| Pan i magnitude | 14.99 (0.002) | 14.99 (0.002) | |||||||
| Pan z magnitude | 15.10 (0.002) | 15.10 (0.002) | |||||||
| Pan y magnitude | 15.14 (0.004) | 15.14 (0.004) | |||||||
| E(B-V) | 0.119 | ||||||||
* 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.