SDSS J074443.39+164851.0

All names: SDSS J074443.39+164851.0, Gaia DR3 667992969308884224, Gaia EDR3 667992969308884224, SDSS J074443.40+164851.1, GALEX J074443.4+164850, Gaia DR2 667992969308884224, SDSS J074443.40+164851.10

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 07 44 43.37 (0.2) 07 44 43.39 07 44 43.37 (0.3) 07 44 43.37 07 44 43.40 (0.2) 07 44 43.40
Declination 16 48 50.95 (0.2) 16 48 51.01 16 48 50.95 (0.2) 16 48 50.95 16 48 51.10 (0.2) 16 48 51.09
Spectral type DB DB DB DB DB
Effective temperature [K] 17508.0 16310.0 15215.0 17156.0 (86) 17699.0 (2305) 17530.0 (110)
log(g) [cgs] 8.11 8.01 7.91 7.87 (0.05) 8.17 (0.2) 8.07 (0.05)
Mass [M] 0.657 0.596 0.541 0.695 (0.1) 0.629 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 0.1643
log(H/He) -5.76 <-5.08
log(C/He)
log(Ca/He) <-6.05
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] 3.36 (0.2) 3.27 (0.3) 3.36 3.36 (0.2)
Distance [pc] 297.56 (20) 305.63 (25) 351.00 297.56 297.56 (20)
Composition He
Proper motion (right ascension) [mas/yr] -30.26147492 (0.2) -30.28395685 (0.5) -30.261 (0.2)
Proper motion (declination) [mas/yr] -9.647789412 (0.2) -10.15551067 (0.4) -9.648 (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 18.30 (0.01) 18.30 (0.01) 18.28 (0.02)
g magnitude 18.38 (0.007) 18.38 (0.007) 18.37 (0.01)
r magnitude 18.67 (0.009) 18.67 (0.009) 18.69 (0.01)
i magnitude 18.96 (0.01) 18.95 (0.01) 18.97 (0.01)
z magnitude 19.19 (0.05) 19.19 (0.05) 19.24 (0.06)
G magnitude 18.53 (0.02) 18.57 18.53 18.53 (0.004)
BP magnitude 18.50 (0.02) 18.42
RP magnitude 18.64 (0.03) 18.65
Pan g magnitude 18.41 (0.007)
Pan r magnitude 18.70 (0.007)
Pan i magnitude 18.98 (0.006)
Pan z magnitude 19.21 (0.02)
Pan y magnitude 19.29 (0.02)
E(B-V) 0.014

* 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.