All names: WISE J165022.05+312749.6, TIC 298336617, Gaia DR2 1313140659676082560, LAMOST J165022.05+312749.7, 2MASS J16502205+3127496, GALEX J165022.0+312750, WISEA J165022.05+312749.6, SDSS J165022.05+312749.7, UCAC2 42767283, UCAC4 608-055138, PG1648+315, Gaia EDR3 1313140659676082560, PG 1648+315, SDSS J165022.04+312749.7, USNO-B1.0 1214-00252072, Gaia DR3 1313140659676082560
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Geier 2020 | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 50 22.05 (0.03) | 16 50 22.05 | 16 50 22.03 | 16 50 22.05 (0.03) | 16 50 22.05 (0.03) | 16 50 22.05 | |||
| Declination | 31 27 49.66 (0.03) | 31 27 49.72 | 31 27 49.76 | 31 27 49.66 (0.05) | 31 27 49.69 (0.03) | 31 27 49.71 | |||
| Spectral type | sdOB+MS | sdBC0.5VIIHe28 | SD_auto | ||||||
| Effective temperature | [K] | 12966.0 (47) | |||||||
| log(g) | [cgs] | 7.00 (0.003) | |||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.59 (0.04) | 0.50 (0.05) | 0.50 (0.05) | 0.59 (0.04) | ||||
| Distance | [pc] | 1703.38 (102) | 1989.26 (201) | 1989.12 (201) | 1703.29 (102) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 3.454122179 (0.03) | 3.919 (0.08) | 3.919136782 (0.08) | 3.454 (0.03) | -1.5 | |||
| Proper motion (declination) | [mas/yr] | -1.905513388 (0.04) | -2.168 (0.1) | -2.168343567 (0.1) | -1.906 (0.04) | -1.5 | |||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 16.00 | ||||||||
| V magnitude | |||||||||
| R magnitude | 15.90 (0.5) | ||||||||
| I magnitude | |||||||||
| J magnitude | 15.22 (0.05) | 15.22 (0.05) | |||||||
| H magnitude | 14.75 (0.06) | 14.75 (0.06) | |||||||
| K magnitude | 14.66 (0.07) | 14.66 (0.07) | |||||||
| u magnitude | 15.74 (0.005) | 15.74 (0.005) | 15.74 (0.005) | 15.75 (0.01) | |||||
| g magnitude | 15.88 (0.004) | 15.88 (0.004) | 15.88 (0.004) | 15.91 (0.01) | |||||
| r magnitude | 16.02 (0.005) | 16.02 (0.005) | 16.02 (0.005) | 16.03 (0.01) | |||||
| i magnitude | 16.05 (0.005) | 16.05 (0.005) | 16.05 (0.005) | 16.06 (0.01) | |||||
| z magnitude | 16.04 (0.007) | 16.04 (0.007) | 16.04 (0.007) | 16.07 (0.01) | |||||
| G magnitude | 15.82 (0.002) | 15.84 (0.001) | 15.84 | 15.82 (0.003) | |||||
| BP magnitude | 15.88 (0.002) | 15.86 (0.007) | 15.86 | ||||||
| RP magnitude | 15.63 (0.003) | 15.64 (0.005) | 15.64 | ||||||
| Pan g magnitude | 15.91 (0.005) | 15.91 (0.005) | |||||||
| Pan r magnitude | 16.01 (0.004) | 16.01 (0.004) | |||||||
| Pan i magnitude | 16.02 (0.006) | 16.02 (0.006) | |||||||
| Pan z magnitude | 16.04 (0.01) | 16.04 (0.01) | |||||||
| Pan y magnitude | 16.04 (0.006) | 16.04 (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.