SDSS J073843.90+333431.1

All names: SDSS J073843.91+333431.2, SDSS J073843.91+333431.20, SDSS J073843.90+333431.1, Gaia DR3 894059015314436864, Gaia EDR3 894059015314436864, Gaia DR2 894059015314436864, SDSS J073843.90+333430.9

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Simbad Eisenstein et al. 2006 Kleinman et al. 2013 Vincent et al. 2023
Right ascension 07 38 43.91 (0.4) 07 38 43.90 07 38 43.91 (0.5) 07 38 43.91 (0.4) 07 38 43.91 07 38 43.91
Declination 33 34 30.95 (0.4) 33 34 30.96 33 34 30.96 (0.5) 33 34 30.99 (0.4) 33 34 31.14 33 34 31.16
Spectral type DBAH: DBAH SDO: DBAH: DB
Effective temperature [K] 13264.0 14117.0 12943.0 14575.0 (392) 13957.0 (491)
log(g) [cgs] 7.99 7.49 7.42 8.70 (0.2) 8.86 (0.3)
Mass [M] 0.58 0.346 0.317
log(Luminosity) [L]
Cooling age [Gyr] 0.1645
log(H/He) -4.968
log(C/He)
log(Ca/He)
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] 2.08 (0.5) 1.50 (0.6) 2.08 (0.5)
Distance [pc] 480.10 (113) 667.58 (257) 480.10 (113)
Composition He
Proper motion (right ascension) [mas/yr] -2.015470876 (0.6) -2.671237339 (1) -2.015 (0.6) 2.1
Proper motion (declination) [mas/yr] -2.150832278 (0.5) -3.412110996 (1) -2.151 (0.5) 5.6
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.84 (0.03) 19.84 (0.04) 19.76 (0.04) 19.76 (0.03)
g magnitude 19.84 (0.01) 19.84 (0.01) 19.83 (0.02) 19.84 (0.02)
r magnitude 20.08 (0.02) 20.08 (0.02) 20.10 (0.02) 20.11 (0.02)
i magnitude 20.27 (0.03) 20.27 (0.03) 20.19 (0.04) 20.21 (0.03)
z magnitude 20.49 (0.1) 20.49 (0.1) 20.55 (0.2) 20.56 (0.2)
G magnitude 19.93 (0.07) 20.00 19.93 (0.006)
BP magnitude 20.08 (0.07) 19.95
RP magnitude 19.85 (0.1) 19.89
Pan g magnitude 19.86 (0.02)
Pan r magnitude 20.06 (0.02)
Pan i magnitude 20.30 (0.02)
Pan z magnitude 20.50 (0.04)
Pan y magnitude 20.57 (0.2)
E(B-V) 0.031

* 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.