Gaia DR2 1871220493849872512

All names: Gaia EDR3 1871220493849872512, WDJ204923.48+381139.02, Gaia DR3 1871220493849872512, UVEX J204923.48+381139.0, Gaia DR2 1871220493849872512

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 20 49 23.50 (0.1) 20 49 23.50 20 49 23.50 20 49 23.48 (0.1) 20 49 23.50
Declination 38 11 38.72 (0.1) 38 11 38.73 38 11 38.72 38 11 39.02 (0.1) 38 11 38.73
Spectral type DC D
Effective temperature [K] 6881.0 6657.0 6235.0 (146)
log(g) [cgs] 8.16 8.06 7.89 (0.04)
Mass [M] 0.694 0.613 0.506 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 2.1140 1.9770
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 10.87 (0.1) 10.97 (0.2) 10.87 10.87 (0.1) 10.97 (0.2)
Distance [pc] 91.99 (1) 91.17 (1) 91.99 91.99 (1) 91.17 (1)
Composition
Proper motion (right ascension) [mas/yr] 19.71194044 (0.1) 19.26450605 (0.3) 19.712 (0.1) 19.26450605
Proper motion (declination) [mas/yr] -19.15253877 (0.1) -19.07444873 (0.4) -19.153 (0.1) -19.07444873
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 18.89
r magnitude 18.39
i magnitude
z magnitude
G magnitude 18.51 (0.01) 18.54 18.51 18.51 (0.003) 18.54
BP magnitude 18.76 (0.01) 18.76 18.76
RP magnitude 18.18 (0.01) 18.17 18.17
Pan g magnitude 18.73 (0.007)
Pan r magnitude 18.53 (0.009)
Pan i magnitude 18.52 (0.01)
Pan z magnitude 18.54 (0.007)
Pan y magnitude 18.58 (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.