GD 359

All names: GD 359, WDJ170751.94+353238.72, GALEX J170751.9+353239, SDSS J170751.91+353239.4, SDSS J170751.90+353239.9, Gaia EDR3 1338455643596995072, Gaia DR2 1338455643596995072, 2MASS J17075190+3532390, J1707+3532, SDSS J170751.92+353239.4, TIC 21831234, Gaia DR3 1338455643596995072, SDSS J170751.90+353239.97, USNO-B1.0 1255-00251545

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 SDSS DR12 Kilic et al. 2025 Jewett et al. 2024 Hardy et al. 2023a Kilic et al. 2020 MWDD H Gaia DR2 Stilism Ferrario et al. 2015 Kepler et al. 2015 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 Vincent et al. 2023
Right ascension 17 07 51.88 (0.04) 17 07 51.92 17 07 51.92 17 07 51.88 (0.05) 17 07 51.88 17 07 51.94 (0.04) 17 07 51.88
Declination 35 32 40.58 (0.04) 35 32 39.43 35 32 39.43 35 32 40.53 (0.06) 35 32 40.58 35 32 38.73 (0.04) 35 32 40.53
Spectral type DAH DAH DAH DAH DA DA DAH DA: DAH DAH DAH
Effective temperature [K] 22332.0 (412) 22332.0 (413) 22872.4 (502) 22331.0 (415) 19709.0 23491.0 (1000) 22431.0 (401)
log(g) [cgs] 8.87 (0.01) 8.87 8.91 (0.05) 8.87 (0.01) 8.78 9.33 (0.01) 8.88 (0.01)
Mass [M] 1.144 (0.007) 1.144 (0.008) 1.160978723986195 (0.04) 1.145 (0.007) 1.093 1.147 (0.008)
log(Luminosity) [L]
Cooling age [Gyr] 0.3000 (0.02) 0.3370
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] 13.29 (0.05) 13.31 (0.06) 13.29 13.29 (0.05) 13.31 (0.06)
Distance [pc] 75.23 (0.3) 75.14 (0.4) 75.23 75.23 (0.3) 75.14 (0.4)
Composition H H H
Proper motion (right ascension) [mas/yr] -46.44797231 (0.05) -46.35071536 (0.1) -46.448 (0.05) -46.351
Proper motion (declination) [mas/yr] 116.0539258 (0.06) 116.3732755 (0.1) 116.054 (0.06) 116.373
Variability
Magnetic yes yes
Bd [MG] 2.1313584392241607 2.7
Infrared excess (disk)
Binarity
B magnitude 16.40
V magnitude
R magnitude 16.60
I magnitude
J magnitude 16.79 (0.1)
H magnitude 16.15 (0.2)
K magnitude
u magnitude 16.18 (0.006) 16.18 (0.006) 16.18 (0.01) 16.18 (0.006) 16.18 (0.006)
g magnitude 16.29 (0.003) 16.29 (0.003) 16.29 (0) 16.29 (0.003) 16.29 (0.003)
r magnitude 16.70 (0.004) 16.70 (0.004) 16.70 (0) 16.70 (0.004) 16.70 (0.004)
i magnitude 16.99 (0.005) 16.99 (0.005) 16.99 (0.01) 16.99 (0.005) 16.99 (0.005)
z magnitude 17.30 (0.01) 17.30 (0.01) 17.30 (0.01) 17.30 (0.01) 17.30 (0.01)
G magnitude 16.49 (0.004) 16.52 16.49 16.49 (0.003) 16.52
BP magnitude 16.39 (0.004) 16.37 16.37
RP magnitude 16.70 (0.003) 16.69 16.69
Pan g magnitude 16.35 (0.005)
Pan r magnitude 16.70 (0.003)
Pan i magnitude 17.00 (0.002)
Pan z magnitude 17.26 (0.004)
Pan y magnitude 17.43 (0.01)
E(B-V) 0.010

* Constant surface field

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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.