SDSS J181146.43+235353.2

All names: Gaia DR3 4578385526371529856, SDSS J181146.43+235353.2, GALEX J181146.4+235352, Gaia EDR3 4578385526371529856, Gaia DR2 4578385526371529856

Parameter Unit Gaia EDR3 SDSS DR12 Hardy et al. 2023a MWDD H Gaia DR2 Stilism Simbad Kleinman et al. 2013
Right ascension 18 11 46.43 (0.4) 18 11 46.43 18 11 46.43 (0.5) 18 11 46.43 (0.4) 18 11 46.43
Declination 23 53 53.13 (0.6) 23 53 53.26 23 53 53.13 (0.9) 23 53 53.13 (0.6) 23 53 53.15
Spectral type DA DAH DAH DAH
Effective temperature [K] 18943.8 (2204) 5911.0 22703.0 (1033)
log(g) [cgs] 8.63 (0.1) 7.64 9.51 (0.2)
Mass [M] 1.0087734035945473 (0.2) 0.398
log(Luminosity) [L]
Cooling age [Gyr] 1.4500
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] 1.80 (0.8) 2.09 (1) 1.80 (0.8)
Distance [pc] 556.82 (258) 477.44 (275) 556.82 (258)
Composition H
Proper motion (right ascension) [mas/yr] 1.686424264 (0.6) 1.434311929 (1) 1.686 (0.6)
Proper motion (declination) [mas/yr] 0.087605675 (0.7) 1.625923388 (2) 0.088 (0.7)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 22.02 (0.2) 20.52 (0.05) 20.52 (0.05)
g magnitude 22.22 (0.1) 20.52 (0.02) 20.52 (0.02)
r magnitude 22.17 (0.1) 20.65 (0.03) 20.65 (0.03)
i magnitude 22.05 (0.2) 20.89 (0.06) 20.89 (0.06)
z magnitude 21.08 (0.2) 21.01 (0.2)
G magnitude 20.61 (0.08) 20.70 20.61 (0.008)
BP magnitude 20.53 (0.08) 20.40
RP magnitude 20.32 (0.1) 20.44
Pan g magnitude
Pan r magnitude
Pan i magnitude
Pan z magnitude
Pan y magnitude
E(B-V) 0.076

* 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.