SDSS J125446.91+523420.2

All names: GALEX J125447.0+523419, SDSS J125446.91+523420.25, SDSS J125446.89+523420.0, Gaia EDR3 1569673657490871168, Gaia DR2 1569673657490871168, Gaia DR3 1569673657490871168, SDSS J125446.91+523420.2

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Kepler et al. 2016 Vincent et al. 2024 Simbad Vincent et al. 2023
Right ascension 12 54 46.89 (0.2) 12 54 46.89 12 54 46.89 (0.2) 12 54 46.89 12 54 46.90 (0.2)
Declination 52 34 20.13 (0.2) 52 34 20.03 52 34 20.13 (0.2) 52 34 20.13 52 34 20.04 (0.2)
Spectral type DA: DA: DA DA DA
Effective temperature [K] 7616.0 7805.0 (57) 8214.0 (424)
log(g) [cgs] 7.91 7.95 (0.09) 8.09 (0.1)
Mass [M] 0.543 0.501 (0.04) 0.649 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 1.0820
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] 4.93 (0.3) 4.93 (0.3) 4.93 4.93 (0.3)
Distance [pc] 203.03 (11) 202.84 (14) 203.03 203.03 (11)
Composition H
Proper motion (right ascension) [mas/yr] -5.559244417 (0.2) -6.310577162 (0.5) -5.559 (0.2)
Proper motion (declination) [mas/yr] 6.017129419 (0.3) 6.970672589 (0.5) 6.017 (0.3)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.15 (0.04) 20.11 (0.04) 20.15 (0.04)
g magnitude 19.65 (0.01) 19.65 (0.03) 19.65 (0.01)
r magnitude 19.57 (0.02) 19.57 (0.02) 19.58 (0.02)
i magnitude 19.55 (0.02) 19.56 (0.03) 19.56 (0.02)
z magnitude 19.54 (0.07) 19.56 (0.07) 19.53 (0.07)
G magnitude 19.53 (0.04) 19.57 19.53 19.53 (0.004)
BP magnitude 19.77 (0.04) 19.72
RP magnitude 19.31 (0.05) 19.36
Pan g magnitude 19.66 (0.01)
Pan r magnitude 19.59 (0.01)
Pan i magnitude 19.58 (0.01)
Pan z magnitude 19.72 (0.03)
Pan y magnitude 19.61 (0.04)
E(B-V) 0.015

* 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.