WD 1659+639

All names: Gaia DR3 1632062489871107200, GALEX J165926.6+635213, Gaia DR2 1632062489871107200, SDSS J165926.57+635212.8, WD 1659+639, [MMN2004c] WD J1659+6352, SDSS J165926.56+635212.7, Gaia EDR3 1632062489871107200, SDSS J165926.56+635212.8, SDSS J165926.58+635212.9, SDSS J165926.58+635212.8

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Tremblay et al. 2011 Mukadam et al. 2004 Vincent et al. 2024 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Kleinman et al. 2004 Vincent et al. 2023
Right ascension 16 59 26.56 (0.09) 16 59 26.56 16 59 26.56 (0.1) 16 59 26.56 16 59 26.57 (0.09) 16 59 26.57 16 59 25.15 16 59 26.58 16 59 26.58
Declination 63 52 12.45 (0.09) 63 52 12.71 63 52 12.47 (0.1) 63 52 12.45 63 52 12.88 (0.09) 63 52 12.85 63 52 07.68 63 52 12.88 63 52 12.86
Spectral type DA DA DA DA DA DA4.8 DA DA
Effective temperature [K] 9850.0 10600.0 (40) 10410.0 (30) 10175.0 (194) 10405.0 (28) 10392.0 (24) 10446.0 (26)
log(g) [cgs] 7.97 8.29 (0.03) 8.17 (0.03) 8.01 (0.03) 8.17 (0.03) 8.25 (0.03) 8.22 (0.03)
Mass [M] 0.585 0.79 (0.02) 0.606 (0.03) 0.748 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 0.6061 0.8128
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] 6.89 (0.09) 6.96 (0.1) 6.89 6.89 (0.09)
Distance [pc] 145.08 (2) 143.72 (2) 145.08 145.09 (2)
Composition H H
Proper motion (right ascension) [mas/yr] -2.49024108 (0.1) -3.033941771 (0.3) -2.49 (0.1) -1.8 -4.0
Proper motion (declination) [mas/yr] -26.43515473 (0.1) -26.70166619 (0.3) -26.435 (0.1) -28.0 -26.0
Variability NOV
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.36 (0.02) 18.36 (0.02) 18.34 (0.03) 18.32 18.33 (0.02) 18.32 (0.03)
g magnitude 17.91 (0.006) 17.88 17.91 (0.006) 17.89 (0.02) 17.88 17.88 (0.02) 17.88 (0.02)
r magnitude 18.03 (0.007) 18.03 (0.007) 18.02 (0.02) 18.02 18.02 (0.02) 18.02 (0.01)
i magnitude 18.16 (0.009) 18.16 (0.009) 18.13 (0.03) 18.13 18.14 (0.03) 18.13 (0.03)
z magnitude 18.34 (0.03) 18.34 (0.03) 18.33 (0.04) 18.34 18.32 (0.04) 18.34 (0.04)
G magnitude 17.94 (0.008) 17.98 17.94 17.94 (0.003)
BP magnitude 18.00 (0.008) 18.00
RP magnitude 17.88 (0.01) 17.89
Pan g magnitude 17.97 (0.005)
Pan r magnitude 18.06 (0.009)
Pan i magnitude 18.19 (0.004)
Pan z magnitude 18.35 (0.01)
Pan y magnitude 18.45 (0.02)
E(B-V) 0.015

* 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.