SDSS J150418.55+120026.3

All names: SDSS J150418.55+120026.2, Gaia DR3 1180837280202652544, SDSS J150418.55+120026.30, GALEX J150418.5+120026, Gaia EDR3 1180837280202652544, SDSS J150418.56+120025.9, SDSS J150418.55+120026.3, Gaia DR2 1180837280202652544

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 15 04 18.55 (0.08) 15 04 18.55 15 04 18.55 (0.1) 15 04 18.55 15 04 18.55 (0.08) 15 04 18.55
Declination 12 00 25.87 (0.08) 12 00 26.27 12 00 25.88 (0.1) 12 00 25.87 12 00 26.32 (0.08) 12 00 26.25
Spectral type DBAH: DB DBAH DBAH: DB
Effective temperature [K] 14910.0 14225.0 13832.0 15243.0 (38) 14431.0 (496) 15584.0 (77)
log(g) [cgs] 8.02 8.03 8.00 8.00 (0) 8.06 (0.04) 8.42 (0.05)
Mass [M] 0.603 0.605 0.585 0.622 (0.04)
log(Luminosity) [L]
Cooling age [Gyr] 0.2531
log(H/He) -5.15 -5.08 (0.2)
log(C/He)
log(Ca/He) <-7.97
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] 6.81 (0.1) 6.80 (0.1) 6.81 6.81 (0.1)
Distance [pc] 146.88 (2) 146.99 (3) 159.00 146.88 146.88 (2)
Composition He
Proper motion (right ascension) [mas/yr] -3.713520859 (0.1) -3.736107763 (0.2) -3.714 (0.1)
Proper motion (declination) [mas/yr] -28.46775476 (0.1) -28.23361929 (0.2) -28.468 (0.1)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 17.10 (0.008) 17.10 (0.008) 17.10 (0.02)
g magnitude 17.16 (0.004) 17.16 (0.004) 17.18 (0.02)
r magnitude 17.44 (0.005) 17.44 (0.005) 17.47 (0.02)
i magnitude 17.66 (0.007) 17.66 (0.007) 17.66 (0.02)
z magnitude 17.90 (0.02) 17.90 (0.02) 17.89 (0.03)
G magnitude 17.28 (0.008) 17.30 17.28 17.28 (0.003)
BP magnitude 17.23 (0.008) 17.20
RP magnitude 17.37 (0.01) 17.36
Pan g magnitude 17.19 (0.003)
Pan r magnitude 17.44 (0.005)
Pan i magnitude 17.68 (0.009)
Pan z magnitude 17.87 (0.008)
Pan y magnitude 18.04 (0.01)
E(B-V) 0.019

* 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.