SDSS J154606.89+565059.1

All names: Gaia DR3 1598739281730889344, GALEX J154606.9+565059, SDSS J154606.88+565059.0, SDSS J154606.88+565059.2, SDSS J154606.89+565059.10, Gaia EDR3 1598739281730889344, SDSS J154606.89+565059.1, Gaia DR2 1598739281730889344

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 46 06.87 (0.1) 15 46 06.88 15 46 06.87 (0.1) 15 46 06.87 15 46 06.89 (0.1) 15 46 06.89
Declination 56 50 59.28 (0.1) 56 50 59.09 56 50 59.27 (0.1) 56 50 59.28 56 50 59.06 (0.1) 56 50 59.07
Spectral type DB DB DB DB DB
Effective temperature [K] 11363.0 11980.0 11702.0 11372.0 (89) 12637.0 (470) 11937.0 (226)
log(g) [cgs] 7.81 8.07 8.03 8.00 (0) 8.13 (0.05) 8.78 (0.2)
Mass [M] 0.477 0.626 0.599 0.664 (0.04) 1.08 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 0.4261
log(H/He) -6.004 <-5.8
log(C/He)
log(Ca/He) <-10.48
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] 5.25 (0.1) 5.33 (0.1) 5.25 5.25 (0.1)
Distance [pc] 190.59 (4) 187.60 (5) 181.00 190.59 190.60 (4)
Composition He
Proper motion (right ascension) [mas/yr] -8.988446822 (0.1) -9.180410781 (0.2) -8.988 (0.1)
Proper motion (declination) [mas/yr] 13.65145425 (0.1) 13.89281593 (0.3) 13.651 (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 18.23 (0.01) 18.23 (0.01) 18.22 (0.02)
g magnitude 18.21 (0.006) 18.21 (0.006) 18.24 (0.02)
r magnitude 18.41 (0.008) 18.41 (0.008) 18.41 (0.02)
i magnitude 18.56 (0.01) 18.56 (0.01) 18.57 (0.02)
z magnitude 18.79 (0.04) 18.79 (0.04) 18.78 (0.05)
G magnitude 18.26 (0.01) 18.29 18.26 18.26 (0.003)
BP magnitude 18.26 (0.01) 18.22
RP magnitude 18.29 (0.02) 18.22
Pan g magnitude 18.22 (0.004)
Pan r magnitude 18.37 (0.007)
Pan i magnitude 18.58 (0.01)
Pan z magnitude 18.74 (0.009)
Pan y magnitude 18.92 (0.03)
E(B-V) 0.017

* 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.