SDSS J124304.32+500928.6

All names: Gaia DR2 1567652755119002624, SDSS J124304.32+500928.5, GALEX J124304.2+500929, SDSS J124304.32+500928.60, SDSS J124304.32+500928.6, Gaia DR3 1567652755119002624, Gaia EDR3 1567652755119002624, WD 1240+504

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Vincent et al. 2024 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 12 43 04.28 (0.1) 12 43 04.33 12 43 04.29 (0.1) 12 43 04.28 12 43 04.33 (0.1) 12 43 04.32 12 43 04.13 12 43 04.32
Declination 50 09 28.40 (0.1) 50 09 28.58 50 09 28.40 (0.1) 50 09 28.40 50 09 28.63 (0.1) 50 09 28.61 50 09 22.68 50 09 28.60
Spectral type DB DB DB DB DB DBAZH: DB
Effective temperature [K] 17002.0 16485.0 15805.0 16947.0 (70) 17746.0 (1579) 17728.0 (206) 17604.0 (246)
log(g) [cgs] 8.29 7.94 7.89 8.18 (0.05) 8.07 (0.1) 8.24 (0.09) 8.21 (0.1)
Mass [M] 0.775 0.559 0.531 0.637 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 0.1397
log(H/He) -5.397 -5.08 (0.4)
log(C/He)
log(Ca/He) <-6.51
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] 2.87 (0.2) 2.79 (0.2) 2.87 2.87 (0.2)
Distance [pc] 348.91 (19) 357.89 (25) 308.00 348.91 348.91 (19)
Composition He
Proper motion (right ascension) [mas/yr] -26.76327803 (0.1) -26.67070047 (0.3) -26.763 (0.1) -23.9
Proper motion (declination) [mas/yr] -14.70194918 (0.2) -14.73281983 (0.3) -14.702 (0.2) -15.0
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.52 (0.02) 18.52 (0.02) 18.51 (0.02) 18.50 18.54 (0.02)
g magnitude 18.59 (0.007) 18.59 (0.007) 18.52 (0.05) 18.51 18.53 (0.05)
r magnitude 18.93 (0.01) 18.93 (0.01) 18.92 (0.02) 18.91 18.93 (0.02)
i magnitude 19.19 (0.01) 19.19 (0.01) 19.18 (0.02) 19.17 19.19 (0.02)
z magnitude 19.39 (0.06) 19.39 (0.06) 19.39 (0.06) 19.38 19.40 (0.06)
G magnitude 18.75 (0.01) 18.80 18.75 18.75 (0.003)
BP magnitude 18.69 (0.01) 18.66
RP magnitude 18.91 (0.03) 18.92
Pan g magnitude 18.64 (0.008)
Pan r magnitude 18.92 (0.006)
Pan i magnitude 19.18 (0.01)
Pan z magnitude 19.45 (0.02)
Pan y magnitude 19.49 (0.04)
E(B-V) 0.018

* Constant surface field

Special notes:

Spectra

Controls

Normalize at:
Normalize by mean flux

Range:

x: to
y: to

Spectra available:

Spectra without link are available upon request

Absorption lines

Photometric filters

BVRI
ugriz

Photometric fit





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.