Gaia DR2 4122206119171399680

All names: WDJ171744.06-195746.42, Gaia DR2 4122206119171399680, Gaia DR3 4122206119171399680, Gaia EDR3 4122206119171399680, GALEX J171744.0-195746, WDJ171744.06-195746.43

Parameter Unit Gaia EDR3 Pan-STARRS DR1 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 17 17 44.11 (0.09) 17 17 44.11 17 17 44.11 17 17 44.06 (0.09) 17 17 44.11
Declination -19 57 45.52 (0.06) -19 57 45.55 -19 57 45.52 -19 57 46.42 (0.06) -19 57 45.55
Spectral type DC D
Effective temperature [K] 7177.0 6909.0 6601.0 (78)
log(g) [cgs] 8.09 7.97 7.80 (0.02)
Mass [M] 0.644 0.557 0.462 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 1.5930 1.5380
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 15.56 (0.09) 15.61 (0.1) 15.56 15.56 (0.09) 15.61 (0.1)
Distance [pc] 64.26 (0.4) 64.05 (0.5) 64.26 64.26 (0.4) 64.05 (0.5)
Composition
Proper motion (right ascension) [mas/yr] 51.79902472 (0.1) 51.92849815 (0.2) 51.799 (0.1) 51.92849815
Proper motion (declination) [mas/yr] 56.56485941 (0.08) 56.74356126 (0.2) 56.565 (0.08) 56.74356126
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 17.46 (0.005) 17.48 17.46 17.46 (0.003) 17.48
BP magnitude 17.64 (0.005) 17.58 17.58
RP magnitude 17.13 (0.006) 17.11 17.11
Pan g magnitude 17.67 (0.009)
Pan r magnitude 17.51 (0.002)
Pan i magnitude 17.50 (0.008)
Pan z magnitude 17.54 (0.01)
Pan y magnitude 17.61 (0.009)
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.