SDSS J004235.36+225536.5

All names: SDSS J004235.35+225536.5, Gaia DR2 2803222521560799104, Gaia DR3 2803222521560799104, SDSS J004235.36+225536.5, GALEX J004235.2+225537, J0042+2255, Gaia EDR3 2803222521560799104, SDSS J004235.36+225536.58

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 00 42 35.36 (1) 00 42 35.36 00 42 35.38 00 42 35.36 (1) 00 42 35.38 (1)
Declination 22 55 36.38 (0.4) 22 55 36.55 22 55 36.68 22 55 36.39 (0.6) 22 55 36.64 (0.4)
Spectral type DZ DZ DZ DZ DZ
Effective temperature [K] 7726.0 (495) 7555.0 13800.0 (1000)
log(g) [cgs] 7.48 7.51 8.00 (0)
Mass [M] 0.3207 0.35
log(Luminosity) [L]
Cooling age [Gyr] 0.6920 0.7264
log(H/He) <-5.0429
log(C/He)
log(Ca/He) -11.4403 (0.2) -8.399
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] 2.53 (1) 2.68 2.68 (1) 2.53 (1)
Distance [pc] 394.65 (172) 373.79 (180) 373.79 (180) 394.65 (172)
Composition He He He
Proper motion (right ascension) [mas/yr] -10.93595711 (1) -10.41021951 (3) -10.936 (1)
Proper motion (declination) [mas/yr] -16.30265537 (0.7) -19.05178535 (2) -16.303 (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 20.91 (0.1) 20.89 (0.1) 20.89 (0.1)
g magnitude 20.50 (0.03) 20.54 (0.04) 20.50 (0.03)
r magnitude 20.42 (0.04) 20.45 (0.04) 20.45 (0.04)
i magnitude 20.43 (0.05) 20.46 (0.05) 20.46 (0.05)
z magnitude 20.44 (0.2) 20.41 (0.2) 20.41 (0.2)
G magnitude 20.59 (0.07) 20.63 20.59 (0.009)
BP magnitude 20.50 (0.07) 20.53
RP magnitude 20.15 (0.09) 20.07
Pan g magnitude 20.50 (0.03)
Pan r magnitude 20.40 (0.02)
Pan i magnitude 20.47 (0.03)
Pan z magnitude 20.41 (0.05)
Pan y magnitude 20.47 (0.2)
E(B-V) 0.050

* 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.