Gaia DR2 6871976608802622464

All names: GALEX J195449.6-162220, WDJ195449.66-162220.95, Gaia DR3 6871976608802622464, Gaia EDR3 6871976608802622464, Gaia DR2 6871976608802622464

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 19 54 49.75 (0.08) 19 54 49.75 19 54 49.75 19 54 49.66 (0.08) 19 54 49.75
Declination -16 22 21.23 (0.06) -16 22 21.22 -16 22 21.23 -16 22 20.95 (0.06) -16 22 21.22
Spectral type DC D
Effective temperature [K] 7996.0 7707.0 7386.0 (100)
log(g) [cgs] 8.11 8.01 7.82 (0.03)
Mass [M] 0.662 0.583 0.471 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 1.2630 1.2440
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 15.14 (0.1) 15.31 (0.1) 15.14 15.14 (0.1) 15.31 (0.1)
Distance [pc] 66.04 (0.4) 65.33 (0.6) 66.04 66.04 (0.4) 65.33 (0.6)
Composition
Proper motion (right ascension) [mas/yr] 76.39272424 (0.1) 76.51196015 (0.2) 76.393 (0.1) 76.51196015
Proper motion (declination) [mas/yr] -17.56809392 (0.06) -17.37047538 (0.1) -17.568 (0.06) -17.37047538
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 17.16 (0.008) 17.18 17.16 17.16 (0.003) 17.18
BP magnitude 17.30 (0.008) 17.26 17.26
RP magnitude 16.91 (0.007) 16.92 16.92
Pan g magnitude 17.30 (0.005)
Pan r magnitude 17.22 (0.003)
Pan i magnitude 17.26 (0.003)
Pan z magnitude 17.36 (0.004)
Pan y magnitude 17.42 (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.