Gaia DR2 6886287332455279104

All names: GALEX J204549.6-161226, Gaia DR3 6886287332455279104, SDSS J204549.64-161226.3, J2045-1612, WDJ204549.65-161226.21, SDSS J204549.65-161226.3, Gaia EDR3 6886287332455279104, Gaia DR2 6886287332455279104, WDJ204549.65-161226.22

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 45 49.65 (0.1) 20 45 49.65 20 45 49.65 20 45 49.65 (0.1) 20 45 49.65
Declination -16 12 26.45 (0.06) -16 12 26.44 -16 12 26.45 -16 12 26.21 (0.06) -16 12 26.44
Spectral type DA DA DA DA DA
Effective temperature [K] 7455.0 (50) 7461.0 (46) 7454.0 (49) 7384.0 7114.0 7505.0 (98)
log(g) [cgs] 7.99 (0.02) 8.00 (0.03) 8.00 (0.03) 7.98 7.87 8.01 (0.03)
Mass [M] 0.589 (0.01) 0.594 (0.02) 0.595 (0.02) 0.583 0.5 0.598 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 1.3300 1.2970 1.2690
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] 11.94 (0.1) 12.03 (0.3) 12.03 (0.3) 11.94 11.95 (0.1) 12.03 (0.3)
Distance [pc] 83.72 (1) 83.13 (2) 83.16 (2) 83.72 83.72 (1) 83.16 (2)
Composition H H
Proper motion (right ascension) [mas/yr] -0.64892182 (0.1) -0.426394564 (0.4) -0.649 (0.1) -0.426394564
Proper motion (declination) [mas/yr] -14.8016336 (0.1) -14.59321467 (0.2) -14.802 (0.1) -14.59321467
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 17.20 (0.02)
H magnitude
K magnitude 16.99 (0.08)
u magnitude 18.41 (0.02) 18.44 (0.02) 18.44 (0.02)
g magnitude 17.97 (0.006) 17.97 (0.006)
r magnitude 17.84 (0.006) 17.84 (0.006)
i magnitude 17.83 (0.008) 17.83 (0.008)
z magnitude 17.91 (0.02) 17.91 (0.02)
G magnitude 17.80 (0.008) 17.81 17.80 17.80 (0.003) 17.81
BP magnitude 17.97 (0.008) 17.97 17.97
RP magnitude 17.52 (0.01) 17.50 17.50
Pan g magnitude 17.97 (0.004) 17.97 (0.004)
Pan r magnitude 17.84 (0.003) 17.84 (0.004)
Pan i magnitude 17.84 (0.005) 17.84 (0.005)
Pan z magnitude 17.91 (0.01) 17.91 (0.01)
Pan y magnitude 17.95 (0.01) 17.95 (0.01)
E(B-V) 0.003

* 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.