SDSS J124129.86+210321.9

All names: Gaia EDR3 3954567257774449920, SDSS J124129.86+210321.8, GALEX J124129.8+210322, Gaia DR3 3954567257774449920, SDSS J124129.86+210321.9, SDSS J124129.85+210321.8, Gaia DR2 3954567257774449920, SDSS J124129.86+210321.90

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 12 41 29.82 (0.2) 12 41 29.86 12 41 29.82 (0.3) 12 41 29.82 12 41 29.87 (0.2) 12 41 29.86
Declination 21 03 21.80 (0.1) 21 03 21.85 21 03 21.80 (0.2) 21 03 21.80 21 03 21.84 (0.1) 21 03 21.87
Spectral type DB DB DB DB DB+MS
Effective temperature [K] 16194.0 15676.0 14221.0 17100.0 (2004) 16036.0 (219)
log(g) [cgs] 8.26 7.94 7.84 8.18 (0.2) 8.07 (0.1)
Mass [M] 0.753 0.555 0.498 0.699 (0.1) 0.626 (0.08)
log(Luminosity) [L]
Cooling age [Gyr] 0.1833
log(H/He) <-5.917
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] 2.78 (0.2) 2.60 (0.3) 2.78 2.78 (0.2)
Distance [pc] 359.80 (31) 385.31 (48) 359.80 359.80 (31)
Composition He
Proper motion (right ascension) [mas/yr] -41.58261641 (0.3) -42.46883863 (0.5) -41.583 (0.3)
Proper motion (declination) [mas/yr] -2.570840429 (0.2) -2.798169687 (0.3) -2.571 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity WDMS
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.89 (0.02) 18.89 (0.02) 18.88 (0.08)
g magnitude 18.98 (0.009) 18.98 (0.009) 18.99 (0.03)
r magnitude 19.23 (0.01) 19.23 (0.01) 19.25 (0.03)
i magnitude 19.49 (0.02) 19.49 (0.02) 19.54 (0.02)
z magnitude 19.72 (0.06) 19.72 (0.06) 19.69 (0.1)
G magnitude 19.09 (0.02) 19.13 19.09 19.09 (0.003)
BP magnitude 19.08 (0.02) 19.01
RP magnitude 19.24 (0.04) 19.17
Pan g magnitude 18.99 (0.009)
Pan r magnitude 19.24 (0.004)
Pan i magnitude 19.50 (0.009)
Pan z magnitude 19.76 (0.03)
Pan y magnitude 19.65 (0.05)
E(B-V) 0.022

* 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.