Gaia DR2 6887386745296346624

All names: SDSS J204632.25-141308.0, 2MASS J20463227-1413079, Gaia EDR3 6887386745296346624, Gaia DR2 6887386745296346624, WDJ204632.25-141308.26, J2046-1413, TIC 259694917, USNO-A2.0 0750-20384059, Gaia DR3 6887386745296346624, SDSS J204632.24-141308.0, GALEX J204632.3-141306

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 Caron et al. 2023 Kilic et al. 2020 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 20 46 32.24 (0.05) 20 46 32.24 20 46 32.24 20 46 32.25 (0.05) 20 46 32.24
Declination -14 13 07.49 (0.03) -14 13 07.51 -14 13 07.49 -14 13 08.26 (0.03) -14 13 07.51
Spectral type DA DA DA DA DA
Effective temperature [K] 8408.0 (46) 8544.0 (41) 8409.0 (46) 8432.0 8204.0 8396.0 (67)
log(g) [cgs] 7.92 (0.01) 7.95 (0.01) 7.92 (0.01) 7.92 7.83 7.92 (0.01)
Mass [M] 0.549 (0.009) 0.567 (0.008) 0.547 (0.009) 0.55 0.481 0.547 (0.01)
log(Luminosity) [L]
Cooling age [Gyr] 0.8800 0.8394 0.8372
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] 15.77 (0.07) 15.73 (0.08) 15.73 (0.08) 15.77 15.77 (0.07) 15.73 (0.08)
Distance [pc] 63.43 (0.3) 63.57 (0.3) 63.59 (0.3) 63.43 63.43 (0.3) 63.59 (0.3)
Composition H H
Proper motion (right ascension) [mas/yr] -2.20294995 (0.07) -2.043808036 (0.1) -2.203 (0.07) -2.043808036
Proper motion (declination) [mas/yr] 48.34224127 (0.05) 48.21605705 (0.09) 48.342 (0.05) 48.21605705
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 16.60 (0.3)
V magnitude
R magnitude 16.50 (0.3)
I magnitude
J magnitude 16.31 (0.01) 16.22 (0.1)
H magnitude 15.78 (0.2) 15.78 (0.2)
K magnitude 16.26 (0.04) 15.64 (0.2)
u magnitude 17.16 (0.01) 17.19 (0.01) 17.19 (0.01)
g magnitude 16.74 (0.004) 16.74 (0.004)
r magnitude 16.71 (0.004) 16.71 (0.004)
i magnitude 16.75 (0.005) 16.75 (0.005)
z magnitude 16.88 (0.01) 16.88 (0.01)
G magnitude 16.66 (0.003) 16.68 16.66 16.66 (0.003) 16.68
BP magnitude 16.76 (0.003) 16.76 16.76
RP magnitude 16.46 (0.005) 16.46 16.46
Pan g magnitude 16.74 (0.003) 16.74 (0.003)
Pan r magnitude 16.73 (0.003) 16.73 (0.003)
Pan i magnitude 16.78 (0.003) 16.78 (0.004)
Pan z magnitude 16.89 (0.006) 16.89 (0.005)
Pan y magnitude 16.96 (0.009) 16.96 (0.01)
E(B-V) 0.002

* 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.