SDSS J082454.39+380959.4

All names: SDSS J082454.39+380959.47, Gaia DR2 905186382225000320, GALEX J082454.5+380959, Gaia DR3 905186382225000320, Gaia EDR3 905186382225000320, SDSS J082454.39+380959.4

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 08 24 54.40 (0.2) 08 24 54.39 08 24 54.40 (0.3) 08 24 54.40 08 24 54.40 (0.2)
Declination 38 09 59.29 (0.2) 38 09 59.49 38 09 59.30 (0.3) 38 09 59.29 38 09 59.51 (0.2)
Spectral type DA: DA: DA DA DA
Effective temperature [K] 7281.0 7535.0 (52) 7862.0 (398)
log(g) [cgs] 7.81 7.78 (0.09) 8.10 (0.1)
Mass [M] 0.486 0.495 (0.04) 0.657 (0.09)
log(Luminosity) [L]
Cooling age [Gyr] 1.0540
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] 6.05 (0.3) 5.63 (0.5) 6.05 6.05 (0.3)
Distance [pc] 165.20 (8) 177.76 (15) 165.20 165.20 (8)
Composition H
Proper motion (right ascension) [mas/yr] 1.640230182 (0.3) 1.158953686 (0.6) 1.64 (0.3)
Proper motion (declination) [mas/yr] -13.28122562 (0.2) -13.29893578 (0.5) -13.281 (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 19.88 (0.04) 19.89 (0.04) 19.88 (0.04)
g magnitude 19.43 (0.01) 19.44 (0.02) 19.43 (0.01)
r magnitude 19.30 (0.01) 19.30 (0.02) 19.30 (0.01)
i magnitude 19.35 (0.02) 19.35 (0.02) 19.35 (0.02)
z magnitude 19.37 (0.05) 19.36 (0.05) 19.37 (0.05)
G magnitude 19.31 (0.05) 19.34 19.31 19.31 (0.004)
BP magnitude 19.43 (0.05) 19.52
RP magnitude 19.01 (0.04) 18.98
Pan g magnitude 19.41 (0.007)
Pan r magnitude 19.33 (0.01)
Pan i magnitude 19.34 (0.008)
Pan z magnitude 19.37 (0.02)
Pan y magnitude 19.29 (0.03)
E(B-V) 0.009

* 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.