SDSS J155813.61+402229.9

All names: GALEX J155813.5+402229, SDSS J155813.61+402229.9, WD 1556+405, Gaia DR3 1382833577863719808, Gaia EDR3 1382833577863719808, Gaia DR2 1382833577863719808, SDSS J155813.61+402229.90

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) MWDD HE Gaia DR2 Stilism Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 15 58 13.60 (0.3) 15 58 13.62 15 58 13.60 (0.3) 15 58 13.62 (0.3) 15 58 13.61 15 58 13.78 15 58 13.61
Declination 40 22 29.89 (0.3) 40 22 29.98 40 22 29.90 (0.4) 40 22 29.98 (0.3) 40 22 29.95 40 22 28.92 40 22 29.94
Spectral type DB DB DB DB DB DB
Effective temperature [K] 14301.0 13063.0 15103.0 (376) 14201.0 (376)
log(g) [cgs] 8.12 8.21 8.45 (0.3) 8.19 (0.3)
Mass [M] 0.657 0.713 0.697 (0.2)
log(Luminosity) [L]
Cooling age [Gyr] 0.4208
log(H/He) <-6.055
log(C/He)
log(Ca/He)
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] 2.47 (0.4) 2.48 (0.4) 2.47 (0.4)
Distance [pc] 404.79 (60) 403.76 (70) 404.79 (60)
Composition He
Proper motion (right ascension) [mas/yr] -15.57937145 (0.4) -15.27759597 (0.8) -15.579 (0.4) 1.7
Proper motion (declination) [mas/yr] -5.47560743 (0.5) -4.854884731 (0.9) -5.476 (0.5) -10.2
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.67 (0.04) 19.67 (0.04) 19.68 (0.04) 19.67 19.67 (0.04)
g magnitude 19.81 (0.02) 19.81 (0.02) 19.85 (0.02) 19.85 19.84 (0.02)
r magnitude 20.05 (0.03) 20.05 (0.03) 20.08 (0.03) 20.08 20.09 (0.03)
i magnitude 20.12 (0.04) 20.12 (0.04) 20.16 (0.05) 20.16 20.16 (0.05)
z magnitude 20.36 (0.2) 20.36 (0.2) 20.46 (0.2) 20.46 20.45 (0.2)
G magnitude 19.93 (0.05) 19.99 19.93 (0.005)
BP magnitude 19.98 (0.05) 19.82
RP magnitude 19.97 (0.09) 20.02
Pan g magnitude 19.85 (0.02)
Pan r magnitude 20.06 (0.02)
Pan i magnitude 20.31 (0.02)
Pan z magnitude 20.46 (0.03)
Pan y magnitude 20.62 (0.2)
E(B-V) 0.021

* 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.