SDSS J144425.90+315508.6

All names: GALEX J144425.9+315507, Gaia DR3 1286381016260500736, SDSS J144425.89+315508.6, SDSS J144425.90+315508.62, Gaia DR2 1286381016260500736, Gaia EDR3 1286381016260500736, SDSS J144425.90+315508.6

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 MWDD H Gaia DR2 Stilism Kepler et al. 2015 Simbad Vincent et al. 2023
Right ascension 14 44 25.86 (0.2) 14 44 25.90 14 44 25.86 (0.3) 14 44 25.91 (0.2)
Declination 31 55 08.53 (0.3) 31 55 08.61 31 55 08.53 (0.5) 31 55 08.56 (0.3)
Spectral type DA DA DA DA
Effective temperature [K] 7670.0 8863.0 (80)
log(g) [cgs] 7.30 7.86 (0.1)
Mass [M] 0.277 0.525 (0.05)
log(Luminosity) [L]
Cooling age [Gyr] 0.5987
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(C/H)
log(N/H)
log(O/H)
log(Na/H)
log(Mg/H)
log(Al/H)
log(Si/H)
log(P/H)
log(S/H)
log(Sc/H)
log(Ti/H)
log(Cr/H)
log(Mn/H)
log(Fe/H)
log(Ni/H)
Parallax [mas] 3.06 (0.5) 2.54 (0.7) 3.06 (0.5)
Distance [pc] 326.67 (54) 393.39 (114) 326.67 (54)
Composition H
Proper motion (right ascension) [mas/yr] -34.28557219 (0.2) -34.66459965 (0.5) -34.286 (0.2)
Proper motion (declination) [mas/yr] -1.905138967 (0.5) -2.012098501 (1) -1.905 (0.5)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.71 (0.06) 20.70 (0.06) 20.71 (0.06)
g magnitude 20.22 (0.02) 20.23 (0.02) 20.22 (0.02)
r magnitude 20.22 (0.02) 20.25 (0.03) 20.22 (0.02)
i magnitude 20.31 (0.03) 20.34 (0.03) 20.31 (0.03)
z magnitude 20.31 (0.1) 20.32 (0.1) 20.31 (0.1)
G magnitude 20.16 (0.04) 20.21 20.16 (0.004)
BP magnitude 20.21 (0.04) 20.24
RP magnitude 19.94 (0.04) 19.98
Pan g magnitude 20.23 (0.01)
Pan r magnitude 20.20 (0.02)
Pan i magnitude 20.29 (0.02)
Pan z magnitude 20.29 (0.05)
Pan y magnitude 20.16 (0.03)
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.