All names: UCAC2 39499674, Gaia DR3 1206155188995958784, TIC 229562643, KUV 15568+2207, Gaia EDR3 1206155188995958784, KUV15568+2207, SDSS J155858.20+215828.97, 2MASS J15585819+2158288, UCAC4 560-056642, SDSS J155858.19+215828.9, SDSS J155858.20+215828.9, Gaia DR2 1206155188995958784, GALEX J155858.2+215829
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 58 58.19 (0.02) | 15 58 58.19 | 15 58 58.21 | 15 58 58.19 (0.04) | 15 58 58.20 (0.02) | ||||
| Declination | 21 58 28.92 (0.03) | 21 58 28.95 | 21 58 29.19 | 21 58 28.92 (0.03) | 21 58 28.99 (0.03) | ||||
| Spectral type | sdB+MS | sdB | sdB | ||||||
| Effective temperature | [K] | 25498.0 (377) | |||||||
| log(g) | [cgs] | 4.82 (0.04) | |||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.28 (0.04) | 0.30 (0.05) | 0.30 (0.05) | 0.28 (0.04) | ||||
| Distance | [pc] | 3566.39 (516) | 3354.58 (533) | 3354.41 (534) | 3566.33 (516) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -6.165641371 (0.03) | -6.217 (0.07) | -6.217051893 (0.07) | -6.166 (0.03) | ||||
| Proper motion (declination) | [mas/yr] | -4.520514359 (0.03) | -4.592 (0.06) | -4.591686398 (0.06) | -4.521 (0.03) | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 16.14 (0.1) | ||||||||
| V magnitude | 16.11 (0.1) | ||||||||
| R magnitude | 16.15 (0.09) | ||||||||
| I magnitude | |||||||||
| J magnitude | 15.39 (0.05) | 15.39 (0.05) | |||||||
| H magnitude | 15.20 (0.09) | 15.20 (0.09) | |||||||
| K magnitude | 15.07 (0.2) | 15.07 (0.1) | |||||||
| u magnitude | 16.24 (0.006) | 16.25 (0.006) | 16.25 (0.02) | 16.25 (0.006) | |||||
| g magnitude | 15.97 (0.004) | 15.96 (0.004) | 15.98 (0.01) | 15.96 (0.004) | |||||
| r magnitude | 16.05 (0.005) | 16.05 (0.005) | 16.06 (0.01) | 16.05 (0.005) | |||||
| i magnitude | 16.09 (0.005) | 16.10 (0.005) | 16.11 (0.02) | 16.10 (0.005) | |||||
| z magnitude | 16.20 (0.008) | 16.20 (0.008) | 16.21 (0.02) | 16.20 (0.008) | |||||
| G magnitude | 15.94 (0.002) | 15.96 (0.0007) | 15.96 | 15.94 (0.003) | |||||
| BP magnitude | 16.02 (0.002) | 16.01 (0.005) | 16.01 | ||||||
| RP magnitude | 15.78 (0.002) | 15.78 (0.002) | 15.78 | ||||||
| Pan g magnitude | 15.99 (0.002) | 15.99 (0.002) | |||||||
| Pan r magnitude | 16.05 (0.003) | 16.05 (0.003) | |||||||
| Pan i magnitude | 16.12 (0.002) | 16.12 (0.002) | |||||||
| Pan z magnitude | 16.19 (0.004) | 16.19 (0.004) | |||||||
| Pan y magnitude | 16.24 (0.003) | 16.24 (0.003) | |||||||
| E(B-V) | 0.061 | ||||||||
* 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.