SDSS J154844.43+410519.8

All names: SDSS J154844.43+410519.90, Gaia EDR3 1383826127625190528, GALEX J154844.4+410519, WD 1546+412, Gaia DR3 1383826127625190528, SDSS J154844.43+410519.8, Gaia DR2 1383826127625190528, SDSS J154844.43+410519.9

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism 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 48 44.40 (0.2) 15 48 44.43 15 48 44.41 (0.3) 15 48 44.40 15 48 44.44 (0.2) 15 48 44.43 15 48 43.80 15 48 44.43
Declination 41 05 20.06 (0.2) 41 05 19.82 41 05 20.05 (0.3) 41 05 20.06 41 05 19.72 (0.2) 41 05 19.87 41 05 17.88 41 05 19.86
Spectral type DB DB DB DB DB DB DB
Effective temperature [K] 15889.0 15564.0 13223.0 13406.0 (946) 16964.0 (348) 16020.0 (362)
log(g) [cgs] 8.70 8.17 7.95 7.87 (0.1) 8.66 (0.2) 8.58 (0.2)
Mass [M] 1.032 0.694 0.558 0.513 (0.1) 0.951 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 0.2704
log(H/He) <-5.858
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] 2.58 (0.2) 2.68 (0.3) 2.58 2.58 (0.2)
Distance [pc] 388.30 (33) 373.11 (42) 388.30 388.30 (33)
Composition He
Proper motion (right ascension) [mas/yr] -24.77723946 (0.2) -24.10972484 (0.6) -24.777 (0.2) -23.0
Proper motion (declination) [mas/yr] 21.0944243 (0.3) 21.47698079 (0.6) 21.094 (0.3) 19.4
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.14 (0.02) 19.14 (0.02) 19.09 (0.03) 19.09 19.12 (0.03)
g magnitude 19.22 (0.01) 19.21 (0.01) 19.21 (0.02) 19.20 19.22 (0.02)
r magnitude 19.46 (0.02) 19.46 (0.01) 19.45 (0.02) 19.44 19.46 (0.02)
i magnitude 19.74 (0.02) 19.74 (0.02) 19.74 (0.02) 19.73 19.75 (0.02)
z magnitude 20.05 (0.1) 20.05 (0.1) 20.01 (0.1) 20.00 20.03 (0.1)
G magnitude 19.34 (0.02) 19.39 19.34 19.34 (0.004)
BP magnitude 19.34 (0.02) 19.22
RP magnitude 19.42 (0.05) 19.39
Pan g magnitude 19.26 (0.009)
Pan r magnitude 19.51 (0.009)
Pan i magnitude 19.73 (0.01)
Pan z magnitude 19.92 (0.03)
Pan y magnitude 19.98 (0.07)
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.