SDSS J084018.32+161849.7

All names: Gaia DR2 657806883134472448, GALEX J084018.2+161850, Gaia EDR3 657806883134472448, SDSS J084018.32+161849.6, SDSS J084018.32+161849.7, Gaia DR3 657806883134472448

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 08 40 18.31 (0.3) 08 40 18.32 08 40 18.31 (0.4) 08 40 18.33 (0.3) 08 40 18.32
Declination 16 18 49.60 (0.2) 16 18 49.69 16 18 49.60 (0.3) 16 18 49.71 (0.2) 16 18 49.68
Spectral type DA DA DA DA
Effective temperature [K] 13374.0 14942.0 (447)
log(g) [cgs] 7.87 7.96 (0.09)
Mass [M] 0.534 0.591 (0.05)
log(Luminosity) [L]
Cooling age [Gyr] 0.2291
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] 2.61 (0.3) 2.51 (0.5) 2.61 (0.3)
Distance [pc] 383.69 (48) 398.68 (73) 383.70 (48)
Composition H
Proper motion (right ascension) [mas/yr] -22.43910341 (0.3) -23.59848126 (0.7) -22.439 (0.3)
Proper motion (declination) [mas/yr] -7.186109313 (0.3) -7.02754445 (0.5) -7.186 (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 19.50 (0.03) 19.50 (0.03) 19.53 (0.03)
g magnitude 19.20 (0.01) 19.20 (0.01) 19.22 (0.02)
r magnitude 19.46 (0.01) 19.46 (0.01) 19.50 (0.02)
i magnitude 19.68 (0.02) 19.68 (0.02) 19.72 (0.02)
z magnitude 20.01 (0.09) 20.01 (0.09) 20.07 (0.08)
G magnitude 19.35 (0.03) 19.39 19.35 (0.004)
BP magnitude 19.40 (0.03) 19.35
RP magnitude 19.52 (0.05) 19.38
Pan g magnitude 19.23 (0.01)
Pan r magnitude 19.46 (0.008)
Pan i magnitude 19.72 (0.01)
Pan z magnitude 19.96 (0.03)
Pan y magnitude 19.91 (0.1)
E(B-V) 0.025

* 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.