SDSS J163921.66+254928.7

All names: Gaia DR2 1301300392617762432, Gaia EDR3 1301300392617762432, SDSS J163921.66+254928.6, GALEX J163921.6+254928, Gaia DR3 1301300392617762432, SDSS J163921.66+254928.7

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 16 39 21.67 (0.3) 16 39 21.67 16 39 21.67 (0.4) 16 39 21.66 (0.3) 16 39 21.66
Declination 25 49 28.61 (0.3) 25 49 28.63 25 49 28.61 (0.5) 25 49 28.61 (0.3) 25 49 28.65
Spectral type DA DA DA DA
Effective temperature [K] 8365.0 8646.0 (163)
log(g) [cgs] 7.83 8.55 (0.2)
Mass [M] 0.503 0.935 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 0.7702
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] 3.81 (0.4) 3.00 (0.6) 3.81 (0.4)
Distance [pc] 262.18 (29) 332.93 (65) 262.18 (29)
Composition H
Proper motion (right ascension) [mas/yr] 1.393953471 (0.4) 1.382029633 (0.9) 1.394 (0.4)
Proper motion (declination) [mas/yr] -0.427280075 (0.4) -1.421867256 (0.9) -0.427 (0.4)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.59 (0.05) 20.57 (0.05) 20.57 (0.05)
g magnitude 20.26 (0.02) 20.25 (0.02) 20.25 (0.02)
r magnitude 20.21 (0.02) 20.20 (0.02) 20.20 (0.02)
i magnitude 20.27 (0.03) 20.28 (0.03) 20.28 (0.03)
z magnitude 20.40 (0.1) 20.45 (0.1) 20.45 (0.1)
G magnitude 20.18 (0.05) 20.25 20.18 (0.005)
BP magnitude 20.23 (0.05) 20.23
RP magnitude 19.87 (0.07) 19.92
Pan g magnitude 20.24 (0.01)
Pan r magnitude 20.24 (0.02)
Pan i magnitude 20.30 (0.02)
Pan z magnitude 20.38 (0.04)
Pan y magnitude 19.91 (0.1)
E(B-V) 0.026

* 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.