SDSS J174436.68+264522.6

All names: Gaia DR2 4594298238467186560, Gaia DR3 4594298238467186560, SDSS J174436.68+264522.5, SDSS J174436.68+264522.6, Gaia EDR3 4594298238467186560

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 17 44 36.68 (0.1) 17 44 36.68 17 44 36.68 (0.2) 17 44 36.68 (0.1) 17 44 36.68
Declination 26 45 22.38 (0.2) 26 45 22.57 26 45 22.39 (0.2) 26 45 22.66 (0.2) 26 45 22.56
Spectral type DA DA DA DA DA
Effective temperature [K] 31512.0 (422) 25869.0 31324.0 (292)
log(g) [cgs] 8.02 (0.1) 7.82 7.98 (0.07)
Mass [M] 0.66 (0.05) 0.546 0.636 (0.03)
log(Luminosity) [L] -0.82 (0.07)
Cooling age [Gyr] 0.0078 (0.0005) 0.0150
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] 1.44 (0.2) 1.41 (0.3) 1.44 (0.2)
Distance [pc] 692.26 (94) 706.91 (140) 692.28 (95)
Composition H H
Proper motion (right ascension) [mas/yr] 2.043616229 (0.2) 2.523431224 (0.4) 2.044 (0.2)
Proper motion (declination) [mas/yr] -18.00094848 (0.2) -17.95609 (0.5) -18.001 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.80 (0.02) 18.80 (0.02) 18.79 (0.03)
g magnitude 19.02 (0.009) 19.02 (0.009) 19.03 (0.01)
r magnitude 19.46 (0.01) 19.46 (0.01) 19.46 (0.01)
i magnitude 19.81 (0.03) 19.81 (0.03) 19.82 (0.03)
z magnitude 20.39 (0.1) 20.39 (0.1) 20.36 (0.1)
G magnitude 19.24 (0.02) 19.29 19.24 (0.004)
BP magnitude 19.18 (0.02) 19.15
RP magnitude 19.62 (0.05) 19.55
Pan g magnitude 19.08 (0.01)
Pan r magnitude 19.48 (0.009)
Pan i magnitude 19.84 (0.01)
Pan z magnitude 20.13 (0.04)
Pan y magnitude 20.36 (0.2)
E(B-V) 0.046

* 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.