SDSS J164634.81+352946.0

All names: GALEX J164634.7+352946, SDSS J164634.80+352946.1, SDSS J164634.80+352946.0, Gaia DR3 1327010273009509888, SDSS J164634.81+352946.0, Gaia DR2 1327010273009509888, WD 1644+355, Gaia EDR3 1327010273009509888

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Vincent et al. 2024 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 16 46 34.80 (0.1) 16 46 34.81 16 46 34.80 (0.2) 16 46 34.80 16 46 34.82 (0.1) 16 46 34.81 16 46 34.54 16 46 34.81
Declination 35 29 46.12 (0.2) 35 29 46.14 35 29 46.12 (0.3) 35 29 46.12 35 29 46.19 (0.2) 35 29 46.02 35 29 40.56 35 29 46.02
Spectral type DA DA DA DA_auto DA DA DA
Effective temperature [K] 14805.0 15404.0 (1109) 14634.0 (361) 14592.0 (372)
log(g) [cgs] 8.05 7.93 (0.1) 7.64 (0.1) 7.63 (0.1)
Mass [M] 0.64 0.574 (0.08) 0.459 (0.05)
log(Luminosity) [L]
Cooling age [Gyr] 0.2213
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] 2.65 (0.2) 2.87 (0.3) 2.65 2.65 (0.2)
Distance [pc] 376.91 (26) 348.64 (31) 376.91 376.92 (26)
Composition H
Proper motion (right ascension) [mas/yr] -14.16929804 (0.2) -14.19316201 (0.4) -14.169 (0.2) -8.0
Proper motion (declination) [mas/yr] -3.931154866 (0.2) -3.785030226 (0.6) -3.931 (0.2) -11.7
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.25 (0.02) 19.25 (0.02) 19.26 (0.03) 19.26 19.23 (0.03)
g magnitude 18.94 (0.009) 18.95 (0.009) 18.99 (0.02) 18.99 18.97 (0.02)
r magnitude 19.27 (0.01) 19.27 (0.01) 19.25 (0.02) 19.25 19.25 (0.02)
i magnitude 19.51 (0.02) 19.51 (0.02) 19.52 (0.03) 19.52 19.52 (0.03)
z magnitude 19.78 (0.1) 19.78 (0.1) 19.50 (0.07) 19.51 19.52 (0.07)
G magnitude 19.11 (0.02) 19.16 19.11 19.11 (0.004)
BP magnitude 19.11 (0.02) 19.07
RP magnitude 19.18 (0.04) 19.19
Pan g magnitude 18.99 (0.009)
Pan r magnitude 19.26 (0.009)
Pan i magnitude 19.55 (0.009)
Pan z magnitude 19.78 (0.02)
Pan y magnitude 19.86 (0.04)
E(B-V) 0.020

* 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.