Gaia DR2 4138244832722867200

All names: Gaia DR3 4138244832722867200, WDJ172033.26-131805.38, SDSS J172033.21-131806.6, Gaia DR2 4138244832722867200, Gaia EDR3 4138244832722867200, WDJ172033.26-131805.39

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 20 33.16 (0.1) 17 20 33.16 17 20 33.16 17 20 33.26 (0.1) 17 20 33.16
Declination -13 18 09.21 (0.09) -13 18 09.09 -13 18 09.21 -13 18 05.38 (0.09) -13 18 09.09
Spectral type DC: D
Effective temperature [K] 6739.0 6489.0 6361.0 (117)
log(g) [cgs] 7.88 7.76 7.69 (0.04)
Mass [M] 0.525 0.438 0.404 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 1.4160 1.3900
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 11.33 (0.2) 11.23 (0.3) 11.33 11.33 (0.2) 11.23 (0.3)
Distance [pc] 88.24 (1) 89.04 (2) 88.24 88.24 (1) 89.04 (2)
Composition
Proper motion (right ascension) [mas/yr] -93.64255403 (0.2) -93.75940604 (0.4) -93.643 (0.2) -93.75940604
Proper motion (declination) [mas/yr] -239.0532399 (0.1) -238.8070898 (0.3) -239.053 (0.1) -238.8070898
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.96 (0.03) 18.91 (0.03)
g magnitude 18.41 (0.008) 18.46 (0.008)
r magnitude 18.21 (0.008) 18.29 (0.009)
i magnitude 18.19 (0.009) 18.23 (0.01)
z magnitude 18.21 (0.03) 18.30 (0.04)
G magnitude 18.15 (0.01) 18.17 18.15 18.15 (0.003) 18.17
BP magnitude 18.35 (0.01) 18.31 18.31
RP magnitude 17.75 (0.02) 17.77 17.77
Pan g magnitude 18.37 (0.005)
Pan r magnitude 18.19 (0.006)
Pan i magnitude 18.14 (0.008)
Pan z magnitude 18.16 (0.007)
Pan y magnitude 18.18 (0.02)
E(B-V) 0.011

* 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.