SDSS J145900.87+202221.2

All names: SDSS J145900.87+202221.0, GALEX J145900.8+202221, SDSS J145900.87+202221.2, Gaia EDR3 1261135576452336384, Gaia DR3 1261135576452336384, SDSS J145900.87+202221.20, Gaia DR2 1261135576452336384, SDSS J145900.86+202221.1

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 14 59 00.87 (0.1) 14 59 00.87 14 59 00.87 (0.2) 14 59 00.87 14 59 00.87 (0.1) 14 59 00.87
Declination 20 22 20.95 (0.2) 20 22 21.19 20 22 20.96 (0.2) 20 22 20.95 20 22 21.25 (0.2) 20 22 21.19
Spectral type DBAH: DB DBAH DBAH: DB
Effective temperature [K] 16318.0 15125.0 11636.0 16414.0 (140) 14218.0 (930) 16369.0 (186)
log(g) [cgs] 8.03 7.51 7.13 7.87 (0.1) 7.50 (0.1) 8.01 (0.1)
Mass [M] 0.608 0.356 0.237 0.35 (0.07)
log(Luminosity) [L]
Cooling age [Gyr] 0.1871
log(H/He) -5.628 <-4.94
log(C/He)
log(Ca/He) <-6.33
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] 2.65 (0.2) 2.51 (0.3) 2.65 2.65 (0.2)
Distance [pc] 377.71 (28) 398.08 (40) 346.00 377.71 377.71 (28)
Composition He
Proper motion (right ascension) [mas/yr] 1.168562701 (0.2) 0.360456681 (0.4) 1.169 (0.2)
Proper motion (declination) [mas/yr] -18.60981469 (0.2) -18.74314409 (0.6) -18.61 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.55 (0.02) 18.55 (0.02) 18.57 (0.02)
g magnitude 18.57 (0.008) 18.57 (0.008) 18.56 (0.02)
r magnitude 18.80 (0.01) 18.80 (0.01) 18.80 (0.01)
i magnitude 19.03 (0.01) 19.03 (0.01) 19.05 (0.02)
z magnitude 19.27 (0.05) 19.27 (0.05) 19.27 (0.05)
G magnitude 18.66 (0.03) 18.70 18.66 18.66 (0.004)
BP magnitude 18.66 (0.03) 18.59
RP magnitude 18.76 (0.04) 18.70
Pan g magnitude 18.61 (0.009)
Pan r magnitude 18.81 (0.01)
Pan i magnitude 18.99 (0.008)
Pan z magnitude 19.17 (0.03)
Pan y magnitude 19.27 (0.02)
E(B-V) 0.036

* 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.