SDSS J121231.78+241955.5

All names: SDSS J121231.79+241955.5, GALEX J121231.7+241955, Gaia DR2 4002363406191165952, Gaia DR3 4002363410486135296, SDSS J121231.78+241955.5, Gaia EDR3 4002363410486135296

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Vincent et al. 2024 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 12 12 31.79 (0.2) 12 12 31.79 12 12 31.79 (0.3) 12 12 31.79 12 12 31.79 (0.2) 12 12 31.79
Declination 24 19 55.28 (0.2) 24 19 55.56 24 19 55.29 (0.2) 24 19 55.28 24 19 55.60 (0.2) 24 19 55.54
Spectral type DA DA DA DA DA
Effective temperature [K] 12623.0 13674.0 (997) 13692.0 (844)
log(g) [cgs] 7.82 7.93 (0.1) 7.92 (0.1)
Mass [M] 0.509 0.569 (0.09) 0.568 (0.06)
log(Luminosity) [L]
Cooling age [Gyr] 0.2569
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(C/H)
log(N/H)
log(O/H)
log(Na/H)
log(Mg/H)
log(Al/H)
log(Si/H)
log(P/H)
log(S/H)
log(Sc/H)
log(Ti/H)
log(Cr/H)
log(Mn/H)
log(Fe/H)
log(Ni/H)
Parallax [mas] 3.06 (0.3) 2.96 (0.4) 3.06 3.06 (0.3)
Distance [pc] 326.88 (27) 337.66 (48) 326.88 326.88 (27)
Composition H
Proper motion (right ascension) [mas/yr] 6.228093982 (0.3) 5.629814831 (0.6) 6.228 (0.3)
Proper motion (declination) [mas/yr] -19.4539866 (0.2) -18.98601724 (0.4) -19.454 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.28 (0.03) 19.28 (0.03) 19.29 (0.03)
g magnitude 18.87 (0.009) 18.87 (0.009) 18.88 (0.02)
r magnitude 19.12 (0.01) 19.12 (0.01) 19.13 (0.02)
i magnitude 19.34 (0.02) 19.34 (0.02) 19.34 (0.03)
z magnitude 19.56 (0.06) 19.56 (0.06) 19.57 (0.06)
G magnitude 19.02 (0.03) 19.04 19.02 19.02 (0.004)
BP magnitude 19.06 (0.03) 19.02
RP magnitude 19.07 (0.05) 19.11
Pan g magnitude 18.91 (0.01)
Pan r magnitude 19.14 (0.007)
Pan i magnitude 19.39 (0.007)
Pan z magnitude 19.59 (0.01)
Pan y magnitude 19.65 (0.05)
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.