SDSS J164626.65+222645.4

All names: Gaia DR2 4565977194054353408, GALEX J164626.6+222645, Gaia DR3 4565977194054353408, Gaia EDR3 4565977194054353408, SDSS J164626.65+222645.4

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Hardy et al. 2023a MWDD H Gaia DR2 Stilism Vincent et al. 2024 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 16 46 26.65 (0.1) 16 46 26.66 16 46 26.65 (0.2) 16 46 26.65 16 46 26.66 (0.1) 16 46 26.65
Declination 22 26 45.67 (0.2) 22 26 45.43 22 26 45.66 (0.2) 22 26 45.67 22 26 45.38 (0.2) 22 26 45.45
Spectral type DA DAH DA DAH DAH DA
Effective temperature [K] 14688.7 (376) 13300.0 14410.0 (785) 14991.0 (441)
log(g) [cgs] 8.55 (0.7) 8.49 8.38 (0.08) 8.40 (0.08)
Mass [M] 0.9550778229137245 (0.7) 0.918 0.849 (0.07)
log(Luminosity) [L]
Cooling age [Gyr] 0.6074
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] 3.57 (0.2) 3.99 (0.3) 3.57 3.57 (0.2)
Distance [pc] 280.33 (18) 250.62 (20) 280.33 280.33 (18)
Composition H
Proper motion (right ascension) [mas/yr] -9.965780447 (0.2) -10.13321759 (0.4) -9.966 (0.2)
Proper motion (declination) [mas/yr] 18.21175102 (0.2) 17.98818462 (0.6) 18.212 (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 19.46 (0.03) 19.46 (0.03) 19.42 (0.03)
g magnitude 19.16 (0.01) 19.16 (0.01) 19.15 (0.02)
r magnitude 19.40 (0.01) 19.40 (0.01) 19.41 (0.01)
i magnitude 19.65 (0.02) 19.65 (0.02) 19.65 (0.02)
z magnitude 19.89 (0.09) 19.89 (0.09) 19.99 (0.09)
G magnitude 19.28 (0.03) 19.32 19.28 19.28 (0.003)
BP magnitude 19.25 (0.03) 19.23
RP magnitude 19.35 (0.04) 19.34
Pan g magnitude 19.17 (0.006)
Pan r magnitude 19.40 (0.01)
Pan i magnitude 19.65 (0.01)
Pan z magnitude 19.83 (0.02)
Pan y magnitude 19.87 (0.1)
E(B-V) 0.032

* 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.