SDSS J155919.81+314856.1

All names: GALEX J155919.8+314856, SDSS J155919.82+314856.1, WD 1557+319, SDSS J155919.81+314856.1, Gaia DR2 1321516906759018112, Gaia EDR3 1321516906759018112, Gaia DR3 1321516906759018112, SDSS J155919.82+314856.2

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Tremblay et al. 2011 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 15 59 19.82 (0.07) 15 59 19.81 15 59 19.82 (0.09) 15 59 19.82 15 59 19.81 (0.07) 15 59 19.82 15 59 19.94 15 59 19.82
Declination 31 48 56.37 (0.09) 31 48 56.18 31 48 56.37 (0.1) 31 48 56.37 31 48 56.15 (0.09) 31 48 56.15 31 48 50.76 31 48 56.15
Spectral type DA DA DA DA DA_auto DA DA DA
Effective temperature [K] 13331.0 12740.0 (330) 13420.0 (371) 13846.0 (278) 14495.0 (308)
log(g) [cgs] 7.96 8.29 (0.08) 7.93 (0.04) 7.88 (0.06) 7.90 (0.06)
Mass [M] 0.585 0.79 (0.05) 0.572 (0.03) 0.56 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 0.2640 0.5248
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] 4.48 (0.1) 4.56 (0.1) 4.48 4.48 (0.1)
Distance [pc] 223.18 (5) 219.46 (6) 223.18 223.18 (5)
Composition H H
Proper motion (right ascension) [mas/yr] 5.258928265 (0.09) 5.402778829 (0.2) 5.259 (0.09) 10.6
Proper motion (declination) [mas/yr] 13.97486137 (0.1) 13.97672887 (0.3) 13.975 (0.1) 14.1
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.43 (0.01) 18.43 (0.01) 18.44 (0.02) 18.44 18.44 (0.02)
g magnitude 18.03 (0.006) 18.03 (0.006) 18.03 (0.02) 18.03 18.02 (0.02)
r magnitude 18.28 (0.007) 18.28 (0.007) 18.28 (0.01) 18.28 18.28 (0.01)
i magnitude 18.53 (0.01) 18.52 (0.01) 18.52 (0.02) 18.52 18.51 (0.02)
z magnitude 18.76 (0.03) 18.75 (0.04) 18.75 (0.04) 18.75 18.74 (0.04)
G magnitude 18.18 (0.009) 18.21 18.18 18.18 (0.003)
BP magnitude 18.19 (0.009) 18.16
RP magnitude 18.27 (0.02) 18.24
Pan g magnitude 18.06 (0.003)
Pan r magnitude 18.31 (0.005)
Pan i magnitude 18.56 (0.005)
Pan z magnitude 18.79 (0.01)
Pan y magnitude 18.89 (0.02)
E(B-V) 0.022

* 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.