Gaia DR2 1842670231320998016

All names: 2MASS J20544663+2427290, WDJ205446.64+242729.13, WDJ205446.64+242729.14, SDSS J205446.66+242729.1, Gaia EDR3 1842670231320998016, J2054+2427, Gaia DR2 1842670231320998016, TIC 419411618, Gaia DR3 1842670231320998016

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Vincent et al. 2020 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 20 54 46.68 (0.03) 20 54 46.68 20 54 46.68 20 54 46.64 (0.03) 20 54 46.68
Declination 24 27 29.23 (0.03) 24 27 29.23 24 27 29.23 24 27 29.14 (0.03) 24 27 29.23
Spectral type DA DA
Effective temperature [K] 12534.0 (95) 12008.0 12623.0 12407.0 (107)
log(g) [cgs] 8.14 8.14 8.17 (0.007)
Mass [M] 0.713 (0.006) 0.689 0.67 0.709 (0.006)
log(Luminosity) [L]
Cooling age [Gyr] 0.4528 0.4154
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 15.96 (0.04) 15.95 (0.06) 15.96 15.96 (0.04) 15.95 (0.06)
Distance [pc] 62.66 (0.2) 62.70 (0.2) 62.66 62.66 (0.2) 62.70 (0.2)
Composition
Proper motion (right ascension) [mas/yr] 38.04425829 (0.04) 38.16028261 (0.09) 38.044 (0.04) 38.16028261
Proper motion (declination) [mas/yr] 5.881775236 (0.04) 5.94991498 (0.06) 5.882 (0.04) 5.94991498
Variability NOV
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 16.06 (0.09)
H magnitude 16.03 (0.2)
K magnitude
u magnitude 16.11 (0.01) 16.11 (0.006)
g magnitude 15.71 (0.008) 15.73 (0.003)
r magnitude 15.98 (0.008) 15.94 (0.003)
i magnitude 16.17 (0.01) 16.14 (0.004)
z magnitude 16.39 (0.02) 16.38 (0.008)
G magnitude 15.86 (0.002) 15.88 15.86 15.86 (0.003) 15.88
BP magnitude 15.86 (0.002) 15.85 15.85
RP magnitude 15.89 (0.004) 15.89 15.89
Pan g magnitude 15.80 (0.003)
Pan r magnitude 15.98 (0.002)
Pan i magnitude 16.21 (0.003)
Pan z magnitude 16.42 (0.004)
Pan y magnitude 16.55 (0.008)
E(B-V) 0.005

* 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.