SDSS J234718.15-100729.6

All names: GALEX J234718.0-100729, SDSS J234718.15-100729.6, SDSS J234718.14-100729.5, Gaia EDR3 2434715839392995712, Gaia DR3 2434715839392995712, SDSS J234718.15-100729.60, Gaia DR2 2434715839392995712

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 Kleinman et al. 2013 Vincent et al. 2023
Right ascension 23 47 18.17 (0.4) 23 47 18.14 23 47 18.16 (0.6) 23 47 18.15 (0.4) 23 47 18.15
Declination -10 07 29.82 (0.3) -10 07 29.58 -10 07 29.81 (0.4) -10 07 29.61 (0.3) -10 07 29.56
Spectral type DB:DC DB DB:DC DC
Effective temperature [K] 12491.0 11526.0 9740.0 11193.0 (405)
log(g) [cgs] 8.38 7.94 7.69 8.51 (0.7)
Mass [M] 0.823 0.551 0.414
log(Luminosity) [L]
Cooling age [Gyr] 0.4564
log(H/He) -5.38
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] 2.69 (0.5) 3.05 (0.9) 2.69 (0.5)
Distance [pc] 372.19 (63) 327.52 (92) 372.19 (63)
Composition He
Proper motion (right ascension) [mas/yr] 16.97367612 (0.4) 17.63377137 (0.8) 16.974 (0.4)
Proper motion (declination) [mas/yr] -13.16917904 (0.3) -12.92400198 (0.9) -13.169 (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 19.56 (0.03) 19.56 (0.04) 19.53 (0.04)
g magnitude 19.44 (0.01) 19.44 (0.01) 19.46 (0.03)
r magnitude 19.58 (0.02) 19.58 (0.02) 19.54 (0.03)
i magnitude 19.74 (0.03) 19.74 (0.03) 19.74 (0.03)
z magnitude 19.94 (0.1) 19.94 (0.1) 19.93 (0.1)
G magnitude 19.49 (0.04) 19.54 19.49 (0.005)
BP magnitude 19.65 (0.04) 19.49
RP magnitude 19.45 (0.07) 19.57
Pan g magnitude 19.49 (0.01)
Pan r magnitude 19.59 (0.01)
Pan i magnitude 19.76 (0.01)
Pan z magnitude 19.91 (0.03)
Pan y magnitude 19.91 (0.02)
E(B-V) 0.017

* 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.