Gaia DR2 4230332092645516672

All names: SDSS J202011.19-000516.0, Gaia EDR3 4230332092645516672, WDJ202011.21-000515.55, GALEX J202011.1-000517, Gaia DR3 4230332092645516672, Gaia DR2 4230332092645516672, SDSS J202011.18-000515.9, NLTT 49078, WDJ202011.21-000515.54, LP 635-2, J2020-0005

Parameter Unit Gaia EDR3 Pan-STARRS DR1 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 20 11.02 (0.07) 20 20 11.02 20 20 11.02 20 20 11.21 (0.07) 20 20 11.02
Declination -00 05 19.21 (0.06) -00 05 19.09 -00 05 19.21 -00 05 15.54 (0.06) -00 05 19.09
Spectral type DA DA DA DA
Effective temperature [K] 6976.0 (36) 6952.0 (41) 6793.0 6544.0 7057.0 (61)
log(g) [cgs] 7.96 (0.01) 7.95 (0.01) 7.90 7.78 7.99 (0.02)
Mass [M] 0.571 (0.01) 0.564 (0.01) 0.533 0.448 0.589 (0.01)
log(Luminosity) [L]
Cooling age [Gyr] 1.5000 1.4180 1.3930
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] 15.13 (0.09) 15.09 (0.1) 15.09 (0.1) 15.13 15.13 (0.09) 15.09 (0.1)
Distance [pc] 66.09 (0.4) 66.27 (0.5) 66.25 (0.5) 66.09 66.09 (0.4) 66.25 (0.5)
Composition H
Proper motion (right ascension) [mas/yr] -182.4453629 (0.09) -182.1703854 (0.2) -182.445 (0.09) -182.1703854
Proper motion (declination) [mas/yr] -228.9814687 (0.08) -228.6937308 (0.1) -228.981 (0.08) -228.6937308
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 16.79 (0.02)
H magnitude
K magnitude 16.74 (0.06)
u magnitude 18.25 (0.01) 18.25 (0.01) 18.29 (0.01)
g magnitude 17.70 (0.005) 17.70 (0.005)
r magnitude 17.50 (0.006) 17.50 (0.006)
i magnitude 17.44 (0.006) 17.45 (0.006)
z magnitude 17.52 (0.02) 17.49 (0.02)
G magnitude 17.50 (0.007) 17.52 17.50 17.50 (0.003) 17.52
BP magnitude 17.71 (0.007) 17.69 17.69
RP magnitude 17.16 (0.007) 17.15 17.15
Pan g magnitude 17.72 (0.008) 17.72 (0.007)
Pan r magnitude 17.52 (0.003) 17.52 (0.003)
Pan i magnitude 17.49 (0.003) 17.49 (0.003)
Pan z magnitude 17.53 (0.01) 17.53 (0.01)
Pan y magnitude 17.53 (0.008) 17.53 (0.007)
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.