All names: Gaia DR3 4568179481487112832, LAMOST J170707.96+222427.7, Gaia DR2 4568179481487112832, UCAC4 563-059365, WDJ170707.97+222428.34, TIC 150586083, 2MASS J17070799+2224286, SDSS J170707.95+222428.2, Gaia EDR3 4568179481487112832, WD 1705+224, GALEX J170707.9+222427, J1707+2224, SDSS J170707.96+222428.3, HS 1705+2228
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Kilic et al. 2020 | Gaia DR2 | Stilism | Koester et al. 2009 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 17 07 07.92 (0.01) | 17 07 07.92 (0.02) | 17 07 07.92 | 17 07 07.97 (0.01) | 17 07 07.92 | 17 07 07.94 | ||||||
| Declination | 22 24 27.64 (0.02) | 22 24 27.66 (0.02) | 22 24 27.64 | 22 24 28.34 (0.02) | 22 24 27.66 | 22 24 24.48 | ||||||
| Spectral type | DA | DA | DA | DA | DA3.2 | |||||||
| Effective temperature | [K] | 14840.0 (122) | 14841.0 (122) | 15702.0 (31) | 15043.0 (83) | |||||||
| log(g) | [cgs] | 7.89 (0.007) | 7.88 (0.007) | 7.75 (0.006) | 7.91 (0.005) | |||||||
| Mass | [M☉] | 0.549 (0.005) | 0.548 (0.005) | 0.564 (0.004) | ||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | |||||||||||
| log(H/He) | ||||||||||||
| log(C/He) | ||||||||||||
| log(Ca/He) | ||||||||||||
| log(Ca/H) | ||||||||||||
| log(C/H) | ||||||||||||
| log(N/H) | ||||||||||||
| log(O/H) | ||||||||||||
| log(Na/H) | ||||||||||||
| log(Mg/H) | ||||||||||||
| log(Al/H) | ||||||||||||
| log(Si/H) | ||||||||||||
| log(P/H) | ||||||||||||
| log(S/H) | ||||||||||||
| log(Sc/H) | ||||||||||||
| log(Ti/H) | ||||||||||||
| log(Cr/H) | ||||||||||||
| log(Mn/H) | ||||||||||||
| log(Fe/H) | ||||||||||||
| log(Ni/H) | ||||||||||||
| Parallax | [mas] | 19.88 (0.02) | 19.86 (0.03) | 19.88 | 19.88 (0.02) | 19.86 (0.03) | ||||||
| Distance | [pc] | 50.31 (0.06) | 50.36 (0.07) | 50.31 | 50.31 (0.06) | 50.36 (0.07) | ||||||
| Composition | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -37.00753625 (0.02) | -37.04856083 (0.04) | -37.008 (0.02) | -37.04856083 | |||||||
| Proper motion (declination) | [mas/yr] | -43.58476902 (0.02) | -43.59698402 (0.04) | -43.585 (0.02) | -43.59698402 | |||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | 14.40 | 14.43 (0.07) | ||||||||||
| V magnitude | 13.79 (0.1) | |||||||||||
| R magnitude | 14.92 (0.1) | |||||||||||
| I magnitude | ||||||||||||
| J magnitude | 14.77 (0.07) | |||||||||||
| H magnitude | 14.77 (0.09) | |||||||||||
| K magnitude | ||||||||||||
| u magnitude | 14.83 (0.004) | 14.83 (0.004) | ||||||||||
| g magnitude | 14.53 (0.003) | 14.53 (0.003) | ||||||||||
| r magnitude | 14.68 (0.004) | 14.68 (0.004) | ||||||||||
| i magnitude | 15.08 (0.004) | 15.08 (0.004) | ||||||||||
| z magnitude | 15.45 (0.006) | 15.45 (0.006) | ||||||||||
| G magnitude | 14.69 (0.0009) | 14.70 | 14.69 | 14.69 (0.003) | 14.70 | |||||||
| BP magnitude | 14.64 (0.0009) | 14.62 | 14.62 | |||||||||
| RP magnitude | 14.80 (0.001) | 14.80 | 14.80 | |||||||||
| Pan g magnitude | 14.56 (0.003) | |||||||||||
| Pan r magnitude | 14.84 (0.002) | |||||||||||
| Pan i magnitude | 15.11 (0.004) | |||||||||||
| Pan z magnitude | 15.35 (0.004) | |||||||||||
| Pan y magnitude | 15.43 (0.003) | |||||||||||
| E(B-V) | 0.003 | |||||||||||
* 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.