SDSS J135723.98+495903.4

All names: Gaia EDR3 1510650503218915968, GALEX J135724.0+495903, SBSS 1355+502, Gaia DR2 1510650498927065600, Gaia DR3 1510650503218915968, SDSS J135723.99+495903.30, LAMOST J135723.98+495903.3, SDSS J135723.98+495903.4, SDSS J135723.99+495903.3

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Vincent et al. 2024 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 13 57 23.94 (0.05) 13 57 23.99 13 57 23.94 (0.06) 13 57 23.94 13 57 24.00 (0.05) 13 57 23.99
Declination 49 59 03.73 (0.05) 49 59 03.41 49 59 03.72 (0.06) 49 59 03.73 49 59 03.26 (0.05) 49 59 03.33
Spectral type DB DB DB DBA DB
Effective temperature [K] 15293.0 14684.0 14091.0 15484.0 (32) 15251.0 (351) 15623.0 (68)
log(g) [cgs] 7.91 7.89 7.84 8.00 (0) 7.96 (0.03) 8.15 (0.04)
Mass [M] 0.541 0.528 0.501 0.567 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 0.1901
log(H/He) -5.964 -5.6 (0.2)
log(C/He)
log(Ca/He) <-7.54
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] 6.70 (0.07) 6.69 (0.08) 6.70 6.70 (0.07)
Distance [pc] 149.26 (2) 149.44 (2) 148.00 149.26 149.26 (2)
Composition He
Proper motion (right ascension) [mas/yr] -38.18343851 (0.06) -38.17278088 (0.1) -38.183 (0.06)
Proper motion (declination) [mas/yr] 29.70364278 (0.07) 29.71441401 (0.1) 29.704 (0.07)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 17.00
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 16.86 (0.008) 16.86 (0.008) 16.86 (0.02)
g magnitude 16.91 (0.004) 16.91 (0.004) 16.89 (0.04)
r magnitude 17.22 (0.005) 17.22 (0.005) 17.21 (0.03)
i magnitude 17.45 (0.006) 17.45 (0.006) 17.45 (0.02)
z magnitude 17.71 (0.02) 17.71 (0.02) 17.70 (0.03)
G magnitude 17.07 (0.003) 17.07 17.07 17.07 (0.003)
BP magnitude 17.00 (0.003) 16.96
RP magnitude 17.15 (0.006) 17.14
Pan g magnitude 16.97 (0.003)
Pan r magnitude 17.22 (0.004)
Pan i magnitude 17.45 (0.005)
Pan z magnitude 17.68 (0.003)
Pan y magnitude 17.82 (0.02)
E(B-V) 0.013

* 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.