SDSS J234355.80+224223.2

All names: SDSS J234355.79+224223.2, Gaia DR3 2827053439660604544, SDSS J234355.80+224223.2, SDSS J234355.80+224223.21, GALEX J234355.7+224223, Gaia EDR3 2827053439660604544, J2343+2242, Gaia DR2 2827053439660604544

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Coutu et al. 2019 MWDD H Gaia DR2 Stilism Kepler et al. 2016 Simbad Vincent et al. 2023
Right ascension 23 43 55.81 (1) 23 43 55.80 23 43 55.79 23 43 55.81 (1) 23 43 55.79 (1)
Declination 22 42 23.29 (0.6) 22 42 23.21 22 42 23.17 22 42 23.29 (0.6) 22 42 23.19 (0.6)
Spectral type DZ DZ: DZ: DZ DZ
Effective temperature [K] 8193.0 (513) 7049.0 8176.0 (108)
log(g) [cgs] 7.53 7.26 8.00 (0)
Mass [M] 0.3406 0.263
log(Luminosity) [L]
Cooling age [Gyr] 0.6200 0.7160
log(H/He) <-5.4331
log(C/He)
log(Ca/He) -10.9072 (0.2) -9.973
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 2.54 (1) 2.31 2.31 (2) 2.54 (1)
Distance [pc] 394.38 (191) 432.12 (295) 432.12 (295) 394.37 (191)
Composition He He He
Proper motion (right ascension) [mas/yr] 17.26895628 (0.9) 17.83495359 (2) 17.269 (0.9)
Proper motion (declination) [mas/yr] 6.715036557 (0.7) 7.988603844 (1) 6.715 (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 21.20 (0.09) 21.15 (0.08) 21.15 (0.08)
g magnitude 20.76 (0.03) 20.75 (0.03) 20.75 (0.03)
r magnitude 20.70 (0.04) 20.72 (0.04) 20.70 (0.04)
i magnitude 20.71 (0.06) 20.68 (0.06) 20.68 (0.06)
z magnitude 20.56 (0.2) 20.57 (0.2) 20.56 (0.2)
G magnitude 20.60 (0.1) 20.67 20.60 (0.008)
BP magnitude 20.59 (0.1) 20.60
RP magnitude 20.26 (0.1) 20.31
Pan g magnitude 20.73 (0.03)
Pan r magnitude 20.66 (0.03)
Pan i magnitude 20.68 (0.02)
Pan z magnitude 20.64 (0.03)
Pan y magnitude
E(B-V) 0.051

* 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.