Gaia DR2 1704827791440274560

All names: SDSS J170445.71+764136.8, Gaia DR3 1704827791440274560, Gaia EDR3 1704827791440274560, WDJ170445.75+764136.79, Gaia DR2 1704827791440274560, SDSS J170445.70+764136.8

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 17 04 45.33 (0.08) 17 04 45.34 17 04 45.33 17 04 45.75 (0.08) 17 04 45.34
Declination 76 41 37.18 (0.09) 76 41 37.17 76 41 37.18 76 41 36.80 (0.09) 76 41 37.17
Spectral type DA DA DA
Effective temperature [K] 5311.0 (14) 5378.0 5073.0 5464.0 (56)
log(g) [cgs] 8.10 (0.009) 8.13 7.93 8.18 (0.02)
Mass [M] 0.644 (0.008) 0.662 0.527 0.694 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 5.0770 4.8720
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] 22.34 (0.08) 22.39 (0.1) 22.34 22.34 (0.08) 22.39 (0.1)
Distance [pc] 44.77 (0.2) 44.67 (0.2) 44.77 44.77 (0.2) 44.67 (0.2)
Composition H
Proper motion (right ascension) [mas/yr] -90.08225695 (0.1) -90.1876462 (0.2) -90.082 (0.1) -90.1876462
Proper motion (declination) [mas/yr] 24.08444973 (0.1) 24.18722048 (0.2) 24.084 (0.1) 24.18722048
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.03 (0.06) 20.03 (0.06)
g magnitude 18.69 (0.009) 18.69 (0.009)
r magnitude 17.94 (0.007) 17.94 (0.007)
i magnitude 17.73 (0.008) 17.73 (0.008)
z magnitude 17.67 (0.02) 17.67 (0.02)
G magnitude 17.95 (0.01) 17.97 17.95 17.95 (0.003) 17.97
BP magnitude 18.35 (0.01) 18.37 18.37
RP magnitude 17.39 (0.01) 17.41 17.41
Pan g magnitude 18.38 (0.001)
Pan r magnitude 17.94 (0.006)
Pan i magnitude 17.73 (0.003)
Pan z magnitude 17.70 (0.01)
Pan y magnitude 17.56 (0.01)
E(B-V) 0.005

* 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.