Gaia DR2 2256687898786090112

All names: Gaia EDR3 2256687898786090112, WDJ182151.84+651029.01, Gaia DR2 2256687898786090112, Gaia DR3 2256687898786090112, SDSS J182151.77+651029.6

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 18 21 51.68 (0.1) 18 21 51.68 18 21 51.68 18 21 51.84 (0.1) 18 21 51.68
Declination 65 10 30.42 (0.1) 65 10 30.37 65 10 30.42 65 10 29.01 (0.1) 65 10 30.37
Spectral type DA DA DA
Effective temperature [K] 6189.0 (50) 6117.0 5863.0 6628.0 (115)
log(g) [cgs] 7.88 (0.02) 7.84 7.68 8.06 (0.03)
Mass [M] 0.521 (0.01) 0.497 0.397 0.628 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 1.6990 1.7190
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] 12.82 (0.1) 12.89 (0.1) 12.82 12.82 (0.1) 12.89 (0.1)
Distance [pc] 78.03 (0.7) 77.60 (0.8) 78.03 78.03 (0.7) 77.60 (0.8)
Composition H
Proper motion (right ascension) [mas/yr] -65.55007817 (0.1) -65.93825307 (0.3) -65.55 (0.1) -65.93825307
Proper motion (declination) [mas/yr] 87.70566862 (0.1) 87.6939841 (0.2) 87.706 (0.1) 87.6939841
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.36 (0.03) 19.36 (0.03)
g magnitude 18.55 (0.008) 18.55 (0.008)
r magnitude 18.25 (0.007) 18.25 (0.007)
i magnitude 18.05 (0.008) 18.05 (0.008)
z magnitude 18.24 (0.02) 18.24 (0.02)
G magnitude 18.19 (0.02) 18.22 18.19 18.19 (0.003) 18.22
BP magnitude 18.43 (0.02) 18.45 18.45
RP magnitude 17.83 (0.03) 17.81 17.81
Pan g magnitude 18.46 (0.01)
Pan r magnitude 18.20 (0.008)
Pan i magnitude 18.10 (0.006)
Pan z magnitude 18.12 (0.01)
Pan y magnitude 17.96 (0.03)
E(B-V) 0.012

* 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.