Gaia DR2 2077905319548753664

All names: WDJ194059.37+424031.44, Gaia DR3 2077905319548753664, Gaia EDR3 2077905319548753664, J1940+4240, 2MASS J19405938+4240315, EQ J1940.9+4240, TIC 271538176, PM J19409+4240, Gaia DR2 2077905319548753664, KIC 7129927, WDJ194059.37+424031.43

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Caron et al. 2023 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 19 40 59.31 (0.03) 19 40 59.31 19 40 59.31 19 40 59.37 (0.03) 19 40 59.31
Declination 42 40 30.54 (0.04) 42 40 30.56 42 40 30.54 42 40 31.44 (0.04) 42 40 30.56
Spectral type DA+DA DA DA+DA
Effective temperature [K] 9204.0 (32) 9214.0 9086.0 9250.0 (65)
log(g) [cgs] 7.98 (0.007) 7.98 7.91 8.00 (0.01)
Mass [M] 0.587 (0.006) 0.589 0.525 0.597 (0.01)
log(Luminosity) [L]
Cooling age [Gyr] 0.7600 0.7291 0.7092
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] 15.62 (0.04) 15.54 (0.06) 15.54 (0.06) 15.62 15.62 (0.04) 15.54 (0.06)
Distance [pc] 64.03 (0.2) 64.35 (0.2) 64.33 (0.2) 64.03 64.03 (0.2) 64.33 (0.2)
Composition H
Proper motion (right ascension) [mas/yr] -40.06991499 (0.04) -40.02747801 (0.09) -40.07 (0.04) -40.02747801
Proper motion (declination) [mas/yr] -56.56673081 (0.05) -56.48138078 (0.1) -56.567 (0.05) -56.48138078
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 16.20 (0.08) 16.20 (0.08)
H magnitude 16.32 (0.2) 16.32 (0.2)
K magnitude
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 16.46 (0.003) 16.48 16.46 16.46 (0.003) 16.48
BP magnitude 16.53 (0.003) 16.53 16.53
RP magnitude 16.33 (0.002) 16.33 16.33
Pan g magnitude 16.50 (0.002) 16.50 (0.002)
Pan r magnitude 16.54 (0.003) 16.54 (0.003)
Pan i magnitude 16.65 (0.003) 16.65 (0.003)
Pan z magnitude 16.78 (0.004) 16.78 (0.004)
Pan y magnitude 16.87 (0.004) 16.87 (0.004)
E(B-V) 0.006

* 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.