All names: Ton 228, SDSS J151913.31+261720.6, GALEX J151913.3+261720, Gaia DR3 1270423258548105728, 2MASS J15191331+2617207, SDSS J151913.31+261720.62, PG1517+265, TIC 357500534, Gaia EDR3 1270423258548105728, Gaia DR2 1270423258548105728, LAMOST J151913.33+261720.6, PG 1517+265, LAMOST J151913.32+261720.7
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 19 13.32 (0.02) | 15 19 13.31 | 15 19 13.33 | 15 19 13.32 (0.03) | 15 19 13.32 (0.02) | ||||
| Declination | 26 17 20.60 (0.03) | 26 17 20.64 | 26 17 21.28 | 26 17 20.61 (0.03) | 26 17 20.68 (0.03) | ||||
| Spectral type | sdB+K | DAZ | sdB | ||||||
| Effective temperature | [K] | 31018.0 (1001) | 31441.0 (157) | ||||||
| log(g) | [cgs] | 5.51 (0.1) | 5.47 (0.03) | ||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.47 (0.04) | 0.33 (0.05) | 0.33 (0.05) | 0.47 (0.04) | ||||
| Distance | [pc] | 2150.39 (190) | 3012.96 (450) | 3012.96 (450) | 2150.54 (191) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -1.221958378 (0.03) | -1.333 (0.08) | -1.333 (0.08) | -1.222 (0.03) | ||||
| Proper motion (declination) | [mas/yr] | -5.028453309 (0.04) | -5.159 (0.08) | -5.159 (0.08) | -5.028 (0.04) | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 15.83 | ||||||||
| V magnitude | 15.95 | ||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 15.60 (0.06) | 15.60 (0.06) | |||||||
| H magnitude | 15.27 (0.1) | 15.27 (0.1) | |||||||
| K magnitude | 15.44 (0.1) | 15.44 (0.1) | |||||||
| u magnitude | 15.69 (0.005) | 15.69 (0.005) | 15.69 (0.01) | 15.69 (0.005) | |||||
| g magnitude | 15.73 (0.003) | 15.73 (0.003) | 15.76 (0.02) | 15.73 (0.003) | |||||
| r magnitude | 16.00 (0.004) | 16.00 (0.004) | 16.01 (0.02) | 16.00 (0.004) | |||||
| i magnitude | 16.15 (0.004) | 16.15 (0.004) | 16.15 (0.01) | 16.15 (0.004) | |||||
| z magnitude | 16.27 (0.008) | 16.27 (0.008) | 16.27 (0.02) | 16.27 (0.008) | |||||
| G magnitude | 15.84 (0.002) | 15.86 (0.0008) | 15.86 | 15.84 (0.003) | |||||
| BP magnitude | 15.82 (0.002) | 15.77 (0.008) | 15.77 | ||||||
| RP magnitude | 15.84 (0.002) | 15.84 (0.003) | 15.84 | ||||||
| Pan g magnitude | 15.79 (0.003) | 15.79 (0.003) | |||||||
| Pan r magnitude | 16.01 (0.002) | 16.01 (0.002) | |||||||
| Pan i magnitude | 16.18 (0.003) | 16.18 (0.003) | |||||||
| Pan z magnitude | 16.28 (0.005) | 16.28 (0.005) | |||||||
| Pan y magnitude | 16.34 (0.009) | 16.34 (0.009) | |||||||
| E(B-V) | 0.042 | ||||||||
* 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.