SDSS J171221.25+412055.9

All names: SDSS J171221.25+412055.9, Gaia DR3 1354043037688782464, Gaia EDR3 1354043037688782464, SDSS J171221.26+412055.9, Gaia DR2 1354043037688782464, GALEX J171221.2+412055

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Vincent et al. 2024 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 17 12 21.25 (0.09) 17 12 21.25 17 12 21.25 (0.1) 17 12 21.25 17 12 21.26 (0.09) 17 12 21.26
Declination 41 20 55.91 (0.1) 41 20 55.94 41 20 55.91 (0.1) 41 20 55.91 41 20 55.96 (0.1) 41 20 55.93
Spectral type DA DA DA DA DA
Effective temperature [K] 19717.0 23559.0 (1581) 22571.0 (334)
log(g) [cgs] 7.62 7.83 (0.08) 7.82 (0.05)
Mass [M] 0.439 0.544 (0.06) 0.543 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 0.0467
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] 2.45 (0.1) 2.40 (0.1) 2.45 2.45 (0.1)
Distance [pc] 408.58 (18) 416.77 (25) 408.58 408.58 (18)
Composition H
Proper motion (right ascension) [mas/yr] -6.249058209 (0.1) -6.314594145 (0.2) -6.249 (0.1)
Proper motion (declination) [mas/yr] -3.371275926 (0.1) -3.632893841 (0.3) -3.371 (0.1)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.25 (0.02) 18.25 (0.02) 18.12 (0.02)
g magnitude 18.19 (0.006) 18.19 (0.006) 18.14 (0.02)
r magnitude 18.56 (0.008) 18.56 (0.008) 18.54 (0.02)
i magnitude 18.85 (0.01) 18.85 (0.01) 18.88 (0.02)
z magnitude 19.12 (0.05) 19.12 (0.05) 19.20 (0.04)
G magnitude 18.35 (0.01) 18.37 18.35 18.35 (0.003)
BP magnitude 18.29 (0.01) 18.23
RP magnitude 18.58 (0.02) 18.48
Pan g magnitude 18.19 (0.004)
Pan r magnitude 18.55 (0.01)
Pan i magnitude 18.86 (0.004)
Pan z magnitude 19.10 (0.01)
Pan y magnitude 19.37 (0.06)
E(B-V) 0.026

* 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.