All names: WD 1703+319, 2MASS J17054710+3150080, PG 1703+319, LAMOST J170547.13+315007.7, GALEX J170547.1+315008, Gaia DR2 1310256365798876032, Gaia EDR3 1310256365798876032, WDJ170547.14+315007.57, TIC 21744691, SDSS J170547.14+315007.7, WIRED J170547.13+315007.7, SDSS J170547.14+315007.70, SDSS J170547.13+315007.7, Gaia DR3 1310256365798876032, SDSS J170547.14+315007.6
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Kilic et al. 2025 | Genest-Beaulieu & Bergeron 2019 (spectroscopic) | Genest-Beaulieu & Bergeron 2019 (photometric) | MWDD HE | Gaia DR2 | Stilism | Koester & Kepler 2015 | Bergeron et al. 2011 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 17 05 47.11 (0.03) | 17 05 47.14 | 17 05 47.11 (0.04) | 17 05 47.11 | 17 05 47.14 (0.03) | 17 05 47.11 | 17 05 47.14 | 17 05 47.45 | 17 05 47.14 | ||||||||||
Declination | 31 50 08.99 (0.03) | 31 50 07.67 | 31 50 08.95 (0.05) | 31 50 08.99 | 31 50 07.57 (0.03) | 31 50 08.95 | 31 50 07.71 | 31 50 01.32 | 31 50 07.73 | ||||||||||
Spectral type | DBA | DBA | DBA | DB | DB4 | DBA | DBA | DB4 | DBAQH: | DB | |||||||||
Effective temperature | [K] | 13608.0 (133) | 14449.0 | 13860.0 | 14053.0 | 14274.0 (33) | 14430.0 (362) | 14619.0 (194) | 15954.0 (30) | 14737.0 (65) | |||||||||
log(g) | [cgs] | 8.19 (0.01) | 8.30 | 8.22 | 8.23 | 8.00 (0) | 8.45 (0.1) | 8.28 (0.01) | 9.00 (0.003) | 8.61 (0.04) | |||||||||
Mass | [M☉] | 0.702 (0.01) | 0.777 | 0.722 | 0.733 | 0.88 (0.07) | 0.766 (0.01) | ||||||||||||
log(Luminosity) | [L☉] | -2.48 | |||||||||||||||||
Cooling age | [Gyr] | 0.3603 | 0.4677 | ||||||||||||||||
log(H/He) | -5.5 | -5.577 | -5.59 (0.1) | -5.51 (0.3) | |||||||||||||||
log(C/He) | |||||||||||||||||||
log(Ca/He) | <-8.93 | ||||||||||||||||||
log(Ca/H) | |||||||||||||||||||
log(N/He) | |||||||||||||||||||
log(O/He) | |||||||||||||||||||
log(Na/He) | |||||||||||||||||||
log(Mg/He) | |||||||||||||||||||
log(Al/He) | |||||||||||||||||||
log(Si/He) | |||||||||||||||||||
log(P/He) | |||||||||||||||||||
log(S/He) | |||||||||||||||||||
log(Cl/He) | |||||||||||||||||||
log(Sc/He) | |||||||||||||||||||
log(Ti/He) | |||||||||||||||||||
log(V/He) | |||||||||||||||||||
log(Cr/He) | |||||||||||||||||||
log(Mn/He) | |||||||||||||||||||
log(Fe/He) | |||||||||||||||||||
log(Co/He) | |||||||||||||||||||
log(Ni/He) | |||||||||||||||||||
log(Cu/He) | |||||||||||||||||||
log(Zn/He) | |||||||||||||||||||
log(Ga/He) | |||||||||||||||||||
log(Ge/He) | |||||||||||||||||||
log(Sr/He) | |||||||||||||||||||
Parallax | [mas] | 12.13 (0.04) | 12.11 (0.05) | 12.13 | 12.13 (0.04) | 12.11 (0.05) | |||||||||||||
Distance | [pc] | 82.46 (0.3) | 82.59 (0.4) | 97.00 | 67.00 | 82.46 | 82.46 (0.3) | 82.59 (0.4) | |||||||||||
Composition | He | He | |||||||||||||||||
Proper motion (right ascension) | [mas/yr] | -30.40068773 (0.04) | -30.26044372 (0.09) | -30.401 (0.04) | -30.26 | -31.9 | |||||||||||||
Proper motion (declination) | [mas/yr] | 88.70460467 (0.04) | 88.53979556 (0.1) | 88.705 (0.04) | 88.54 | 87.9 | |||||||||||||
Variability | |||||||||||||||||||
Magnetic | |||||||||||||||||||
Bd | [MG] | ||||||||||||||||||
Infrared excess (disk) | |||||||||||||||||||
Binarity | |||||||||||||||||||
B magnitude | 16.13 | ||||||||||||||||||
V magnitude | 16.25 | ||||||||||||||||||
R magnitude | |||||||||||||||||||
I magnitude | |||||||||||||||||||
J magnitude | 16.83 (0.1) | ||||||||||||||||||
H magnitude | 16.42 (0.2) | ||||||||||||||||||
K magnitude | 16.59 (0.1) | ||||||||||||||||||
u magnitude | 16.18 (0.005) | 16.18 (0.005) | 16.18 (0.005) | 16.21 (0.01) | 16.21 | 16.19 (0.02) | |||||||||||||
g magnitude | 16.22 (0.004) | 16.22 (0.004) | 16.22 (0.004) | 16.26 (0.01) | 16.25 | 16.23 (0.02) | |||||||||||||
r magnitude | 16.50 (0.004) | 16.50 (0.004) | 16.50 (0.004) | 16.53 (0.01) | 16.51 (0.01) | ||||||||||||||
i magnitude | 16.73 (0.005) | 16.73 (0.005) | 16.73 (0.005) | 16.74 (0.01) | 16.73 (0.01) | ||||||||||||||
z magnitude | 16.98 (0.01) | 16.98 (0.01) | 16.98 (0.01) | 16.97 (0.02) | 16.97 (0.02) | ||||||||||||||
G magnitude | 16.34 (0.002) | 16.37 | 16.34 | 16.34 (0.003) | 16.37 | ||||||||||||||
BP magnitude | 16.29 (0.002) | 16.26 | 16.26 | ||||||||||||||||
RP magnitude | 16.42 (0.005) | 16.41 | 16.41 | ||||||||||||||||
Pan g magnitude | 16.26 (0.002) | ||||||||||||||||||
Pan r magnitude | 16.51 (0.003) | ||||||||||||||||||
Pan i magnitude | 16.74 (0.003) | ||||||||||||||||||
Pan z magnitude | 16.96 (0.007) | ||||||||||||||||||
Pan y magnitude | 17.13 (0.007) | ||||||||||||||||||
E(B-V) | 0.010 |
* 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.