SDSS J085430.10+243018.5

All names: Gaia DR3 689752403205144832, SDSS J085430.10+243018.5, SDSS J085430.09+243018.4, GALEX J085430.0+243019, Gaia EDR3 689752403205144832, SDSS J085430.10+243018.4, Gaia DR2 689752403205144832

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Bedard et al. 2020 MWDD H Gaia DR2 Stilism Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 08 54 30.10 (0.3) 08 54 30.10 08 54 30.10 (0.4) 08 54 30.10 (0.3) 08 54 30.10
Declination 24 30 18.39 (0.2) 24 30 18.43 24 30 18.40 (0.2) 24 30 18.46 (0.2) 24 30 18.45
Spectral type DA DA DA DA DA
Effective temperature [K] 30968.0 (695) 12203.0 30000.0 (482)
log(g) [cgs] 7.68 (0.2) 6.76 7.60 (0.1)
Mass [M] 0.5 (0.07) 0.194 0.487 (0.05)
log(Luminosity) [L] -0.63 (0.1)
Cooling age [Gyr] 0.0071 (0.002)
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] 0.96 (0.3) 1.24 (0.4) 0.96 (0.3)
Distance [pc] 1045.26 (357) 807.81 (257) 1045.26 (357)
Composition H H
Proper motion (right ascension) [mas/yr] 2.403620995 (0.4) 2.271091153 (0.7) 2.404 (0.4)
Proper motion (declination) [mas/yr] -4.369960329 (0.3) -4.287305397 (0.5) -4.37 (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 18.97 (0.02) 18.97 (0.02) 18.99 (0.02)
g magnitude 19.15 (0.01) 19.15 (0.01) 19.16 (0.01)
r magnitude 19.59 (0.02) 19.59 (0.02) 19.58 (0.02)
i magnitude 19.82 (0.03) 19.82 (0.03) 19.82 (0.03)
z magnitude 19.85 (0.09) 19.85 (0.09) 19.84 (0.08)
G magnitude 19.35 (0.03) 19.40 19.35 (0.004)
BP magnitude 19.32 (0.03) 19.25
RP magnitude 19.51 (0.06) 19.38
Pan g magnitude 19.22 (0.007)
Pan r magnitude 19.62 (0.02)
Pan i magnitude 19.83 (0.02)
Pan z magnitude 19.92 (0.03)
Pan y magnitude 19.81 (0.05)
E(B-V) 0.028

* 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.