SDSS J073916.80+242513.8

All names: Gaia EDR3 868226779893593856, SDSS J073916.80+242513.8, SDSS J073916.80+242513.6, SDSS J073916.80+242513.69, Gaia DR2 868226779893593856, Gaia DR3 868226779893593856

Parameter Unit Gaia EDR3 SDSS DR10 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Kepler et al. 2015 Simbad Vincent et al. 2023
Right ascension 07 39 16.79 (0.3) 07 39 16.81 07 39 16.79 (0.4) 07 39 16.81 (0.3)
Declination 24 25 13.54 (0.3) 24 25 13.89 24 25 13.55 (0.3) 24 25 13.90 (0.3)
Spectral type DB DB DB DB
Effective temperature [K] 12269.0 11547.0 18849.0 12349.0 (128) 12488.0 (121)
log(g) [cgs] 7.71 7.84 8.70 8.00 (0) 8.00 (0)
Mass [M] 0.431 0.492 1.032
log(Luminosity) [L]
Cooling age [Gyr] 0.3403
log(H/He) -5.779 <-5.56
log(C/He)
log(Ca/He) <-9.47
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] 3.39 (0.4) 3.05 (0.4) 3.39 (0.4)
Distance [pc] 294.87 (32) 327.40 (44) 321.00 294.87 (32)
Composition He
Proper motion (right ascension) [mas/yr] -13.56205496 (0.4) -12.9377865 (0.8) -13.562 (0.4)
Proper motion (declination) [mas/yr] -22.50528543 (0.3) -23.57857935 (0.6) -22.505 (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 19.28 (0.03) 19.28 (0.03) 19.28 (0.03)
g magnitude 19.28 (0.01) 19.28 (0.01) 19.28 (0.01)
r magnitude 19.36 (0.02) 19.36 (0.02) 19.36 (0.01)
i magnitude 19.50 (0.02) 19.50 (0.02) 19.50 (0.02)
z magnitude 20.47 (0.2) 20.47 (0.2) 20.47 (0.2)
G magnitude 19.26 (0.04) 19.32 19.26 (0.005)
BP magnitude 19.23 (0.04) 19.18
RP magnitude 19.21 (0.06) 19.13
Pan g magnitude
Pan r magnitude
Pan i magnitude
Pan z magnitude
Pan y magnitude
E(B-V) 0.014

* 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.