SDSS J164846.28+221639.8

All names: SDSS J164846.28+221639.8, Gaia DR2 4565789585586388480, Gaia DR3 4565789585586388480, GALEX J164846.2+221640, SDSS J164846.27+221639.8, Gaia EDR3 4565789585586388480, SDSS J164846.28+221639.83

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 MWDD H Gaia DR2 Stilism Kepler et al. 2015 Simbad
Right ascension 16 48 46.29 (0.4) 16 48 46.28 16 48 46.29 (0.7) 16 48 46.27 (0.4)
Declination 22 16 40.03 (0.6) 22 16 39.82 22 16 40.02 (0.8) 22 16 39.78 (0.6)
Spectral type DA DA DA
Effective temperature [K] 7772.0 7999.0 (106)
log(g) [cgs] 8.28 7.65 (0.2)
Mass [M] 0.769 0.44 (0.07)
log(Luminosity) [L]
Cooling age [Gyr] 1.9040
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] 1.54 (0.8) 3.81 (1) 1.54 (0.8)
Distance [pc] 650.25 (332) 262.27 (96) 650.24 (332)
Composition H
Proper motion (right ascension) [mas/yr] 15.33156532 (0.5) 12.88488737 (1) 15.332 (0.5)
Proper motion (declination) [mas/yr] 15.4347884 (0.8) 16.55718917 (2) 15.435 (0.8)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 21.45 (0.1) 21.49 (0.1) 21.45 (0.1)
g magnitude 20.67 (0.02) 20.68 (0.03) 20.67 (0.02)
r magnitude 20.64 (0.03) 20.65 (0.03) 20.64 (0.03)
i magnitude 20.57 (0.04) 20.57 (0.03) 20.57 (0.04)
z magnitude 20.74 (0.1) 20.71 (0.1) 20.74 (0.1)
G magnitude 20.57 (0.1) 20.63 20.57 (0.006)
BP magnitude 20.70 (0.1) 20.62
RP magnitude 20.13 (0.09) 20.35
Pan g magnitude 20.67 (0.02)
Pan r magnitude 20.61 (0.02)
Pan i magnitude 20.62 (0.02)
Pan z magnitude 20.68 (0.07)
Pan y magnitude 20.56 (0.2)
E(B-V) 0.039

* 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.