SDSS J141621.78+322638.5

All names: SDSS J141621.78+322638.5, SDSS J141621.79+322638.6, Gaia EDR3 1477720160029646592, SDSS J141621.79+322638.3, Gaia DR2 1477720160029646592, GALEX J141621.8+322638, LAMOST J141621.78+322638.3, Gaia DR3 1477720160029646592, SDSS J141621.79+322638.60

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Bedard et al. 2020 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) Gaia DR2 Stilism Guo et al. 2015 Koester & Kepler 2015 Vincent et al. 2024 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 14 16 21.78 (0.1) 14 16 21.79 14 16 21.78 (0.1) 14 16 21.78 14 16 21.79 (0.1) 14 16 21.79
Declination 32 26 38.28 (0.1) 32 26 38.56 32 26 38.29 (0.1) 32 26 38.28 32 26 38.63 (0.1) 32 26 38.55
Spectral type DB DB DB DB DB DB
Effective temperature [K] 35011.0 (512) 35428.0 31289.0 35015.0 (786) 40963.0 (3378) 32920.0 (645)
log(g) [cgs] 7.81 (0.05) 7.65 7.50 7.51 (0.07) 8.04 (0.1) 7.79 (0.07)
Mass [M] 0.53 (0.02) 0.466 0.402 0.653 (0.09) 0.518 (0.03)
log(Luminosity) [L] -0.52 (0.04)
Cooling age [Gyr] 0.0059 (0.0003)
log(H/He) <-3.407 <-2.79
log(C/He)
log(Ca/He) <-4.0
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 1.85 (0.1) 1.54 (0.2) 1.85 1.85 (0.1)
Distance [pc] 540.69 (42) 648.65 (79) 719.00 540.69 540.69 (42)
Composition He
Proper motion (right ascension) [mas/yr] -3.630779915 (0.1) -3.499378534 (0.3) -3.631 (0.1)
Proper motion (declination) [mas/yr] -21.95548502 (0.2) -22.04840557 (0.4) -21.955 (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 17.95 (0.01) 17.95 (0.01) 17.98 (0.03)
g magnitude 18.21 (0.006) 18.21 (0.006) 18.22 (0.01)
r magnitude 18.65 (0.009) 18.65 (0.009) 18.64 (0.01)
i magnitude 18.95 (0.01) 18.95 (0.01) 18.95 (0.02)
z magnitude 19.27 (0.06) 19.27 (0.06) 19.24 (0.06)
G magnitude 18.43 (0.01) 18.46 18.43 18.43 (0.003)
BP magnitude 18.31 (0.01) 18.28
RP magnitude 18.82 (0.03) 18.74
Pan g magnitude 18.25 (0.002)
Pan r magnitude 18.66 (0.02)
Pan i magnitude 19.03 (0.006)
Pan z magnitude 19.28 (0.02)
Pan y magnitude 19.40 (0.06)
E(B-V) 0.018

* 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.