Gaia DR2 4385909109622569088

All names: Gaia DR2 4385909109622569088, SDSS J164643.40+030305.3, WDJ164643.40+030305.28, WDJ164643.4+030305.28, J1646+0303, GALEX J164643.4+030305, Gaia DR3 4385909109622569088, Gaia EDR3 4385909109622569088

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 16 46 43.40 (0.08) 16 46 43.40 16 46 43.40 16 46 43.40 (0.08) 16 46 43.40
Declination 03 03 05.30 (0.05) 03 03 05.30 03 03 05.30 03 03 05.28 (0.05) 03 03 05.30
Spectral type DA DA DA DA DA
Effective temperature [K] 8338.0 (50) 8427.0 (50) 8337.0 (50) 8411.0 8171.0 8662.0 (121)
log(g) [cgs] 7.97 (0.01) 8.00 (0.01) 7.97 (0.01) 7.99 7.90 8.05 (0.03)
Mass [M] 0.577 (0.01) 0.598 (0.01) 0.581 (0.01) 0.591 0.52 0.625 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 0.9800 0.9321 0.9282
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] 10.62 (0.09) 10.68 (0.1) 10.68 (0.1) 10.62 10.62 (0.09) 10.68 (0.1)
Distance [pc] 94.13 (0.8) 93.63 (1) 93.67 (1) 94.13 94.13 (0.8) 93.67 (1)
Composition H H
Proper motion (right ascension) [mas/yr] 1.35031353 (0.1) 1.257750308 (0.2) 1.35 (0.1) 1.257750308
Proper motion (declination) [mas/yr] 1.087619518 (0.09) 0.983381075 (0.2) 1.088 (0.09) 0.983381075
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 17.30 (0.03)
H magnitude
K magnitude
u magnitude 18.16 (0.02) 18.17 (0.02) 18.17 (0.02)
g magnitude 17.67 (0.006) 17.67 (0.006)
r magnitude 17.67 (0.007) 17.67 (0.007)
i magnitude 17.73 (0.009) 17.73 (0.009)
z magnitude 17.86 (0.03) 17.86 (0.03)
G magnitude 17.61 (0.007) 17.63 17.61 17.61 (0.003) 17.63
BP magnitude 17.72 (0.007) 17.71 17.71
RP magnitude 17.42 (0.01) 17.42 17.42
Pan g magnitude 17.69 (0.004) 17.69 (0.004)
Pan r magnitude 17.68 (0.004) 17.68 (0.004)
Pan i magnitude 17.74 (0.008) 17.74 (0.007)
Pan z magnitude 17.83 (0.007) 17.83 (0.007)
Pan y magnitude 17.91 (0.006) 17.91 (0.005)
E(B-V) 0.007

* 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.