Gaia DR2 1360235560190381440

All names: J1720+4253, WDJ172036.95+425314.67, Gaia EDR3 1360235560190381440, SDSS J172036.86+425316.1, Gaia DR3 1360235560190381440, Gaia DR2 1360235560190381440

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Caron et al. 2023 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 Vincent et al. 2023
Right ascension 17 20 36.77 (0.1) 17 20 36.78 17 20 36.77 17 20 36.95 (0.1) 17 20 36.78
Declination 42 53 15.07 (0.1) 42 53 15.05 42 53 15.07 42 53 14.67 (0.1) 42 53 15.05
Spectral type DC DA DC DA
Effective temperature [K] 5157.0 (25) 5346.0 5046.0 5385.0 (71)
log(g) [cgs] 8.07 (0.01) 8.19 8.00 8.21 (0.03)
Mass [M☉] 0.613 (0.01) 0.7 0.567 0.719 (0.03)
log(Luminosity) [L☉]
Cooling age [Gyr] 5.9100 5.8900 5.4750
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 19.12 (0.1) 19.01 (0.1) 19.01 (0.1) 19.12 19.12 (0.1) 19.01 (0.1)
Distance [pc] 52.31 (0.3) 52.60 (0.4) 52.60 (0.4) 52.31 52.31 (0.3) 52.60 (0.4)
Composition He
Proper motion (right ascension) [mas/yr] -123.6221511 (0.1) -123.427202 (0.3) -123.622 (0.1) -123.427202
Proper motion (declination) [mas/yr] 24.71097764 (0.1) 24.66607931 (0.3) 24.711 (0.1) 24.66607931
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 17.40 (0.04)
H magnitude
K magnitude
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 18.40 (0.02) 18.43 18.40 18.40 (0.003) 18.43
BP magnitude 18.81 (0.02) 18.83 18.83
RP magnitude 17.84 (0.01) 17.85 17.85
Pan g magnitude 18.88 (0.007) 18.88 (0.007)
Pan r magnitude 18.38 (0.003) 18.38 (0.003)
Pan i magnitude 18.17 (0.002) 18.17 (0.003)
Pan z magnitude 18.12 (0.005) 18.12 (0.005)
Pan y magnitude 18.10 (0.007) 18.10 (0.008)
E(B-V) 0.007

* 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.