SDSS J183458.79+410734.2

All names: Gaia EDR3 2110421722369120512, Gaia DR3 2110421722369120512, Gaia DR2 2110421722369120512, SDSS J183458.78+410734.2, GALEX J183458.7+410733, SDSS J183458.79+410734.2

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Bedard et al. 2020 MWDD H Gaia DR2 Stilism Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 18 34 58.78 (0.2) 18 34 58.79 18 34 58.78 (0.2) 18 34 58.79 (0.2) 18 34 58.79
Declination 41 07 34.26 (0.2) 41 07 34.24 41 07 34.26 (0.3) 41 07 34.17 (0.2) 41 07 34.25
Spectral type DA DA DA DA DA
Effective temperature [K] 35156.0 (740) 23458.0 35171.0 (540)
log(g) [cgs] 7.58 (0.1) 7.54 7.77 (0.09)
Mass [M] 0.47 (0.04) 0.419 0.553 (0.04)
log(Luminosity) [L] -0.33 (0.09)
Cooling age [Gyr] 0.0039 (0.001) 0.0206
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] 1.19 (0.3) 1.25 (0.4) 1.19 (0.3)
Distance [pc] 839.81 (181) 798.57 (237) 839.84 (181)
Composition H H
Proper motion (right ascension) [mas/yr] -5.574829224 (0.2) -6.482577962 (0.5) -5.575 (0.2)
Proper motion (declination) [mas/yr] 5.750783468 (0.3) 4.739885535 (0.6) 5.751 (0.3)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.77 (0.02) 18.77 (0.02) 18.77 (0.02)
g magnitude 19.04 (0.009) 19.04 (0.009) 19.05 (0.01)
r magnitude 19.49 (0.01) 19.49 (0.01) 19.50 (0.01)
i magnitude 19.82 (0.02) 19.82 (0.02) 19.83 (0.02)
z magnitude 20.21 (0.1) 20.21 (0.1) 20.22 (0.1)
G magnitude 19.28 (0.03) 19.32 19.28 (0.004)
BP magnitude 19.15 (0.03) 19.12
RP magnitude 19.40 (0.06) 19.50
Pan g magnitude 19.10 (0.004)
Pan r magnitude 19.54 (0.02)
Pan i magnitude 19.86 (0.008)
Pan z magnitude 20.10 (0.03)
Pan y magnitude 19.87 (0.2)
E(B-V) 0.041

* 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.