SDSS J114446.37+254122.3

All names: SDSS J114446.39+254122.4, Gaia DR2 4005741449511315840, GALEX J114446.4+254121, Gaia DR3 4005741449511315840, SDSS J114446.39+254122.36, SDSS J114446.39+254122.3, Gaia EDR3 4005741449511315840, SDSS J114446.37+254122.3

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Bedard et al. 2020 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Kepler et al. 2016 Koester & Kepler 2015 Simbad Vincent et al. 2023
Right ascension 11 44 46.38 (0.1) 11 44 46.38 11 44 46.38 (0.2) 11 44 46.38 (0.1)
Declination 25 41 22.31 (0.1) 25 41 22.37 25 41 22.31 (0.2) 25 41 22.35 (0.1)
Spectral type DBA DB: DB: DB DB
Effective temperature [K] 33128.0 (1808) 49482.0 36751.0 26365.0 47422.0 (85) 48409.0 (249)
log(g) [cgs] 7.74 (0.08) 8.09 7.67 7.33 7.87 (0.04) 8.00 (0.06)
Mass [M] 0.5 (0.03) 0.692 0.474 0.341 0.583 (0.02)
log(Luminosity) [L] -0.57 (0.1)
Cooling age [Gyr] 0.0065 (0.001) 0.0167
log(H/He) <-2.203 <-3.0
log(C/He)
log(Ca/He) <-4.0
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] 2.33 (0.1) 1.90 (0.3) 2.33 (0.1)
Distance [pc] 429.88 (27) 527.08 (78) 544.00 429.89 (27)
Composition He He
Proper motion (right ascension) [mas/yr] -6.33976953 (0.2) -6.325066274 (0.3) -6.34 (0.2)
Proper motion (declination) [mas/yr] -2.68045168 (0.1) -2.265828313 (0.4) -2.68 (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 17.38 (0.01) 17.42 (0.03) 17.39 (0.01)
g magnitude 17.69 (0.005) 17.73 (0.02) 17.69 (0.005)
r magnitude 18.13 (0.007) 18.17 (0.02) 18.14 (0.007)
i magnitude 18.45 (0.01) 18.49 (0.04) 18.45 (0.01)
z magnitude 18.76 (0.04) 18.79 (0.1) 18.77 (0.04)
G magnitude 17.95 (0.02) 17.97 17.95 (0.004)
BP magnitude 17.83 (0.02) 17.77
RP magnitude 18.29 (0.05) 18.16
Pan g magnitude 17.78 (0.006)
Pan r magnitude 18.18 (0.009)
Pan i magnitude 18.49 (0.01)
Pan z magnitude 18.77 (0.01)
Pan y magnitude 18.89 (0.05)
E(B-V) 0.020

* 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.