SDSS J121439.61+351813.4

All names: Gaia EDR3 4029328172947781632, SDSS J121439.61+351813.4, Gaia DR2 4029328172947781632, GALEX J121439.6+351813, SDSS J121439.60+351813.4, Gaia DR3 4029328172947781632, SDSS J121439.61+351813.40

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 12 14 39.60 (0.3) 12 14 39.61 12 14 39.60 (0.6) 12 14 39.61 (0.3) 12 14 39.61
Declination 35 18 13.35 (0.4) 35 18 13.44 35 18 13.35 (0.3) 35 18 13.54 (0.4) 35 18 13.44
Spectral type DB DB DB DB+MS
Effective temperature [K] 25943.0 17497.0 17147.0 23301.0 (1260)
log(g) [cgs] 7.75 8.14 8.11 7.80 (0.2)
Mass [M] 0.483 0.681 0.66 0.503 (0.09)
log(Luminosity) [L]
Cooling age [Gyr] 0.1587
log(H/He) <-3.948
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] 1.60 (0.5) 1.77 (0.6) 1.59 (0.5)
Distance [pc] 626.95 (187) 563.46 (191) 626.96 (187)
Composition He
Proper motion (right ascension) [mas/yr] -9.261040152 (0.3) -10.42065423 (1) -9.261 (0.3)
Proper motion (declination) [mas/yr] -12.300895 (0.5) -12.03295797 (0.6) -12.301 (0.5)
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 19.67 (0.03) 19.67 (0.03) 19.66 (0.04)
g magnitude 19.68 (0.01) 19.68 (0.01) 19.68 (0.02)
r magnitude 20.09 (0.02) 20.09 (0.02) 20.08 (0.02)
i magnitude 20.32 (0.03) 20.32 (0.03) 20.32 (0.03)
z magnitude 20.62 (0.2) 20.62 (0.2) 20.57 (0.2)
G magnitude 19.89 (0.04) 19.96 19.89 (0.005)
BP magnitude 19.86 (0.04) 19.59
RP magnitude 20.06 (0.09) 20.08
Pan g magnitude 19.76 (0.02)
Pan r magnitude 20.09 (0.03)
Pan i magnitude 20.35 (0.02)
Pan z magnitude 20.62 (0.02)
Pan y magnitude
E(B-V) 0.017

* 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.