SDSS J142028.90+345549.9

All names: Gaia EDR3 1480640325474473216, SDSS J142028.90+345549.9, GALEX J142028.9+345549, SDSS J142028.89+345549.8, SDSS J142028.90+345549.91, Gaia DR3 1480640325474473216, Gaia DR2 1480640325474473216, SDSS J142028.89+345549.9

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 MWDD H Gaia DR2 Stilism Kepler et al. 2015 Vincent et al. 2024 Simbad Vincent et al. 2023
Right ascension 14 20 28.87 (0.2) 14 20 28.90 14 20 28.88 (0.2) 14 20 28.87 14 20 28.90 (0.2)
Declination 34 55 50.42 (0.2) 34 55 49.90 34 55 50.40 (0.3) 34 55 50.42 34 55 49.71 (0.2)
Spectral type DA DA DA DA DA
Effective temperature [K] 8112.0 8395.0 (47) 9015.0 (387)
log(g) [cgs] 7.66 8.01 (0.06) 8.07 (0.1)
Mass [M] 0.415 0.602 (0.03) 0.642 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 0.6917
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] 4.02 (0.3) 3.61 (0.4) 4.02 4.02 (0.3)
Distance [pc] 248.82 (19) 277.16 (33) 248.82 248.82 (19)
Composition H
Proper motion (right ascension) [mas/yr] -22.15754366 (0.2) -21.61244037 (0.5) -22.158 (0.2)
Proper motion (declination) [mas/yr] 44.55592067 (0.3) 45.05727219 (0.7) 44.556 (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 20.19 (0.04) 20.17 (0.04) 20.19 (0.04)
g magnitude 19.73 (0.01) 19.75 (0.02) 19.73 (0.01)
r magnitude 19.70 (0.02) 19.69 (0.02) 19.70 (0.02)
i magnitude 19.70 (0.02) 19.69 (0.02) 19.70 (0.02)
z magnitude 19.79 (0.09) 19.79 (0.09) 19.79 (0.09)
G magnitude 19.65 (0.04) 19.70 19.65 19.65 (0.004)
BP magnitude 19.80 (0.04) 19.78
RP magnitude 19.48 (0.04) 19.49
Pan g magnitude 19.74 (0.01)
Pan r magnitude 19.69 (0.02)
Pan i magnitude 19.76 (0.009)
Pan z magnitude 19.83 (0.02)
Pan y magnitude 19.90 (0.01)
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.