Gaia DR2 6797171060323993728

All names: UCAC4 298-239528, CNS5 5038, Gaia DR2 6797171060323993728, WDJ202025.46-302714.65, Gaia DR3 6797171060323993728, EC 20173-3036, Gaia EDR3 6797171060323993728, 2MASS J20202547-3027145, 202025.46-302714.65

Parameter Unit Gaia EDR3 Pan-STARRS DR1 O'Brien et al. 2024 O'Brien et al. 2022 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 20 20 25.37 (0.02) 20 20 25.37 20 20 25.37 20 20 25.46 (0.02) 20 20 25.37
Declination -30 27 16.20 (0.01) -30 27 16.15 -30 27 16.20 -30 27 14.65 (0.01) -30 27 16.15
Spectral type DC DC DC DC
Effective temperature [K] 9934.0 (106) 10550.0 (90) 10169.0 10155.0 9600.0 (47)
log(g) [cgs] 8.04 (0.02) 8.25 (0.02) 8.20 8.13 7.97 (0.008)
Mass [M] 0.607 (0.01) 0.724 0.662 0.563 (0.006)
log(Luminosity) [L]
Cooling age [Gyr] 0.7743 0.7298
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 57.27 (0.02) 57.27 (0.02) 57.27 (0.02) 57.29 (0.04) 57.27 57.27 (0.02) 57.29 (0.04)
Distance [pc] 17.46 (0.006) 17.46 (0.006) 17.46 (0.006) 17.46 (0.01) 17.46 17.46 (0.006) 17.46 (0.01)
Composition
Proper motion (right ascension) [mas/yr] -71.99896976 (0.02) -72.01276077 (0.06) -71.999 (0.02) -72.01276077
Proper motion (declination) [mas/yr] -96.75226994 (0.02) -96.74199694 (0.04) -96.752 (0.02) -96.74199694
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 13.72
V magnitude 13.65
R magnitude 13.79 (0.1)
I magnitude
J magnitude 13.62 (0.03)
H magnitude 13.61 (0.04)
K magnitude 13.59 (0.05)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 13.60 (0.0009) 13.62 13.60 13.60 (0.003) 13.62
BP magnitude 13.63 (0.0009) 13.59 13.59
RP magnitude 13.53 (0.0008) 13.53 13.53
Pan g magnitude 13.64 (0.006)
Pan r magnitude 13.69 (0.02)
Pan i magnitude 13.87 (0.003)
Pan z magnitude 14.01 (0.001)
Pan y magnitude 14.16 (0.02)
E(B-V) 0.000

* 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.