SDSS J084253.04+092226.5

All names: Gaia EDR3 597986269398324224, Gaia DR3 597986269398324224, SDSS J084253.04+092226.5, Gaia DR2 597986269398324224, WD 0840+095, SDSS J084253.03+092226.4

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 08 42 53.02 (0.2) 08 42 53.03 08 42 53.02 (0.3) 08 42 53.04 (0.2) 08 42 53.04 08 42 53.23 08 42 53.04
Declination 09 22 26.42 (0.1) 09 22 26.50 09 22 26.43 (0.2) 09 22 26.60 (0.1) 09 22 26.54 09 22 22.80 09 22 26.54
Spectral type DA DA DA DA DAH DA
Effective temperature [K] 11230.0 11624.0 (1335) 11316.0 (955)
log(g) [cgs] 7.32 7.82 (0.2) 7.91 (0.2)
Mass [M☉] 0.301
log(Luminosity) [L☉]
Cooling age [Gyr] 0.2255
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] 2.19 (0.3) 2.15 (0.4) 2.19 (0.3)
Distance [pc] 456.82 (64) 465.72 (88) 456.83 (64)
Composition H
Proper motion (right ascension) [mas/yr] -19.2970193 (0.3) -19.03534702 (0.6) -19.297 (0.3) -20.6
Proper motion (declination) [mas/yr] -10.85433107 (0.2) -11.12823139 (0.4) -10.854 (0.2) -14.5
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.63 (0.03) 19.63 (0.03) 19.56 (0.03) 19.55 19.57 (0.03)
g magnitude 19.22 (0.01) 19.22 (0.01) 19.13 (0.02) 19.12 19.15 (0.02)
r magnitude 19.37 (0.01) 19.37 (0.01) 19.28 (0.04) 19.27 19.28 (0.04)
i magnitude 19.55 (0.02) 19.55 (0.02) 19.49 (0.03) 19.48 19.49 (0.03)
z magnitude 19.86 (0.07) 19.86 (0.07) 19.71 (0.07) 19.70 19.70 (0.07)
G magnitude 19.24 (0.02) 19.28 19.24 (0.004)
BP magnitude 19.32 (0.02) 19.21
RP magnitude 19.35 (0.04) 19.23
Pan g magnitude 19.17 (0.009)
Pan r magnitude 19.34 (0.006)
Pan i magnitude 19.57 (0.008)
Pan z magnitude 19.78 (0.02)
Pan y magnitude 19.82 (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.