GALEX 2686760033801211126

All names: GALEX 2686760033801211126, Gaia EDR3 1532549888624735104, Gaia DR2 1532549888624735104, SDSS J122025.21+384127.9, Gaia DR3 1532549888624735104, SDSS J122025.21+384127.90, SDSS J122025.21+384127.8, USNO-A2.0 1275-08072710

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Vincent et al. 2024 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 12 20 25.23 (0.1) 12 20 25.21 12 20 25.23 (0.2) 12 20 25.23 12 20 25.21 (0.2) 12 20 25.21
Declination 38 41 27.71 (0.1) 38 41 27.90 38 41 27.71 (0.1) 38 41 27.71 38 41 27.96 (0.1) 38 41 27.88
Spectral type DB DB DB DBH: DB
Effective temperature [K] 16958.0 14358.0 16661.0 (119) 15382.0 (1123) 17033.0 (161)
log(g) [cgs] 7.93 7.92 7.64 (0.08) 7.85 (0.1) 7.97 (0.08)
Mass [M] 0.555 0.546 0.506 (0.09)
log(Luminosity) [L]
Cooling age [Gyr] 0.2021
log(H/He) -5.618 <-4.9
log(C/He)
log(Ca/He) <-6.28
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] 3.24 (0.2) 3.54 (0.2) 3.24 3.54 (0.2)
Distance [pc] 308.95 (16) 282.85 (20) 385.00 308.95 282.85 (20)
Composition He
Proper motion (right ascension) [mas/yr] 13.53965835 (0.1) 12.88090562 (0.4) 12.881 (0.4)
Proper motion (declination) [mas/yr] -15.43471609 (0.1) -15.87892748 (0.2) -15.879 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 17.70 (0.3)
V magnitude
R magnitude 18.40 (0.3)
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.27 (0.02) 18.27 (0.01) 18.28 (0.02)
g magnitude 18.35 (0.007) 18.35 (0.007) 18.38 (0.02)
r magnitude 18.67 (0.009) 18.67 (0.009) 18.69 (0.02)
i magnitude 18.91 (0.01) 18.91 (0.01) 18.93 (0.02)
z magnitude 19.14 (0.05) 19.14 (0.05) 19.15 (0.05)
G magnitude 18.50 (0.02) 18.54 18.50 18.54 (0.003)
BP magnitude 18.44 (0.02) 18.35
RP magnitude 18.57 (0.03) 18.46
Pan g magnitude 18.42 (0.02)
Pan r magnitude 18.67 (0.004)
Pan i magnitude 18.93 (0.004)
Pan z magnitude 19.17 (0.009)
Pan y magnitude 19.21 (0.03)
E(B-V) 0.018

* 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.