SDSS J164525.72+225329.6

All names: WD 1643+229, SDSS J164525.73+225329.6, Gaia DR3 4566050174139425664, Gaia DR2 4566050174138740352, SDSS J164525.72+225329.5, Gaia EDR3 4566050174139425664, GALEX J164525.7+225329, SDSS J164525.72+225329.6

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 16 45 25.73 (0.2) 16 45 25.73 16 45 25.73 (0.4) 16 45 25.73 (0.2) 16 45 25.73 16 45 25.03 16 45 25.73
Declination 22 53 29.38 (0.3) 22 53 29.63 22 53 29.39 (0.6) 22 53 29.64 (0.3) 22 53 29.62 22 53 23.28 22 53 29.62
Spectral type DA DA DA_auto DA DA DA
Effective temperature [K] 24413.0 27376.0 (714) 27436.0 (821)
log(g) [cgs] 8.80 7.80 (0.1) 7.72 (0.2)
Mass [M] 1.111 0.513 (0.07)
log(Luminosity) [L]
Cooling age [Gyr] 0.1930
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] 1.08 (0.3) 2.48 (0.7) 1.08 (0.3)
Distance [pc] 929.00 (274) 402.65 (117) 929.02 (274)
Composition H
Proper motion (right ascension) [mas/yr] -3.181948447 (0.3) -2.908505164 (0.7) -3.182 (0.3) 4.5
Proper motion (declination) [mas/yr] -16.20992422 (0.3) -17.81377091 (1) -16.21 (0.3) -10.7
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.48 (0.03) 19.48 (0.03) 19.50 (0.03) 19.49 19.49 (0.03)
g magnitude 19.59 (0.01) 19.59 (0.01) 19.63 (0.02) 19.63 19.62 (0.02)
r magnitude 19.97 (0.02) 19.97 (0.02) 20.00 (0.02) 20.00 20.00 (0.02)
i magnitude 20.29 (0.03) 20.29 (0.03) 20.30 (0.03) 20.30 20.30 (0.03)
z magnitude 20.65 (0.1) 20.65 (0.1) 20.72 (0.1) 20.72 20.72 (0.1)
G magnitude 19.83 (0.03) 19.87 19.83 (0.004)
BP magnitude 19.72 (0.03) 19.81
RP magnitude 19.99 (0.05) 20.05
Pan g magnitude 19.65 (0.01)
Pan r magnitude 20.02 (0.01)
Pan i magnitude 20.35 (0.03)
Pan z magnitude 20.70 (0.07)
Pan y magnitude 20.67 (0.2)
E(B-V) 0.037

* 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.