Gaia DR2 3409742444299696256

All names: WDJ043922.82+185447.89, Gaia DR3 3409742444299696256, LSPM J0439+1854, Gaia DR2 3409742444299696256, USNO-B1.0 1089-00053915, Gaia EDR3 3409742444299696256

Parameter Unit Gaia EDR3 Pan-STARRS DR1 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 04 39 23.00 (0.1) 04 39 23.00 04 39 23.00 04 39 22.82 (0.1) 04 39 23.00
Declination 18 54 48.28 (0.08) 18 54 48.27 18 54 48.28 18 54 47.89 (0.08) 18 54 48.27
Spectral type DA DA
Effective temperature [K] 6077.0 5827.0 6093.0 (90)
log(g) [cgs] 8.26 8.12 8.27 (0.03)
Mass [M] 0.754 0.647 0.759 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 3.9530 3.9420
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 16.84 (0.1) 16.84 (0.2) 16.84 16.84 (0.1) 16.84 (0.2)
Distance [pc] 59.37 (0.5) 59.38 (0.8) 59.37 59.37 (0.5) 59.38 (0.8)
Composition
Proper motion (right ascension) [mas/yr] 166.1905238 (0.2) 166.2178556 (0.4) 166.191 (0.2) 166.2178556
Proper motion (declination) [mas/yr] 24.17099314 (0.1) 24.21255266 (0.3) 24.171 (0.1) 24.21255266
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.80
V magnitude
R magnitude 18.80
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 18.22 (0.02) 18.23 18.22 18.22 (0.003) 18.23
BP magnitude 18.51 (0.02) 18.54 18.54
RP magnitude 17.77 (0.02) 17.76 17.76
Pan g magnitude 18.52 (0.002)
Pan r magnitude 18.21 (0.004)
Pan i magnitude 18.10 (0.005)
Pan z magnitude 18.10 (0.01)
Pan y magnitude 18.07 (0.02)
E(B-V) 0.001

* 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.