SDSS J165029.90+341125.4

All names: WD 1648+342, Gaia DR3 1314824282560109696, SDSS J165029.90+341125.4, Gaia DR2 1314824282560109696, Gaia EDR3 1314824282560109696, SDSS J165029.91+341125.5, GALEX J165029.9+341125

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Hardy et al. 2023a MWDD H Gaia DR2 Stilism Ferrario et al. 2015 Kulebi et al. 2009 Vincent et al. 2024 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 16 50 29.88 (0.1) 16 50 29.91 16 50 29.88 (0.1) 16 50 29.91 16 50 29.88 16 50 29.91 (0.1) 16 50 29.91 16 50 29.45 16 50 29.91
Declination 34 11 25.29 (0.1) 34 11 25.53 34 11 25.30 (0.2) 34 11 25.51 34 11 25.29 34 11 25.52 (0.1) 34 11 25.50 34 11 21.12 34 11 25.50
Spectral type DAH DA DA DAH DA: DAP DA_H: DA DAH DAH
Effective temperature [K] 9796.8 (299) 9680.0 9750.0 10214.0 (334) 12127.0 (260) 11921.0 (186)
log(g) [cgs] 8.45 (0.08) 8.42 8.00 (0) 8.50 (0.05) 8.99 (0.02) 9.25 (0.09)
Mass [M☉] 0.8840730396205192 (0.1) 0.864 0.921 (0.04)
log(Luminosity) [L☉]
Cooling age [Gyr] 1.3080
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] 6.79 (0.1) 6.81 (0.2) 6.79 6.79 (0.1)
Distance [pc] 147.25 (3) 146.94 (4) 147.25 147.25 (3)
Composition H H
Proper motion (right ascension) [mas/yr] -23.97663775 (0.1) -23.63905892 (0.3) -23.977 (0.1) -18.8
Proper motion (declination) [mas/yr] -14.38527255 (0.2) -14.93158354 (0.5) -14.385 (0.2) -12.8
Variability
Magnetic yes yes yes
Bd [MG] 4.355195215872707 3.38 (0.7) 3.38 (0.7)
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.19 (0.02) 19.19 (0.02) 19.13 (0.03) 19.12 19.15 (0.03)
g magnitude 18.78 (0.008) 18.78 (0.008) 18.78 (0.03) 18.77 18.77 (0.03)
r magnitude 18.86 (0.009) 18.86 (0.009) 18.83 (0.02) 18.82 18.82 (0.02)
i magnitude 18.97 (0.01) 18.97 (0.01) 18.98 (0.02) 18.96 18.97 (0.02)
z magnitude 19.13 (0.04) 19.13 (0.04) 19.09 (0.05) 19.07 19.09 (0.05)
G magnitude 18.78 (0.02) 18.81 18.78 18.78 (0.003)
BP magnitude 18.86 (0.02) 18.85
RP magnitude 18.72 (0.03) 18.69
Pan g magnitude 18.78 (0.008)
Pan r magnitude 18.86 (0.006)
Pan i magnitude 18.97 (0.007)
Pan z magnitude 19.09 (0.02)
Pan y magnitude 19.27 (0.04)
E(B-V) 0.016

* 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.