SDSS J082916.83+123744.4

All names: SDSS J082916.82+123744.6, SDSS J082916.82+123744.5, SDSS J082916.83+123744.46, GALEX J082916.8+123745, SDSS J082916.83+123744.5, Gaia EDR3 602872327273005440, SDSS J082916.83+123744.4, Gaia DR3 602872327273005440, Gaia DR2 602872327273005440

Parameter Unit Gaia EDR3 Pan-STARRS DR1 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 08 29 16.84 (0.2) 08 29 16.83 08 29 16.84 (0.3) 08 29 16.82 (0.2)
Declination 12 37 44.30 (0.2) 12 37 44.60 12 37 44.31 (0.2) 12 37 44.79 (0.2)
Spectral type DB DB DB DB
Effective temperature [K] 12345.0 12846.0 11425.0 11894.0 (110) 11776.0 (103)
log(g) [cgs] 8.07 7.89 7.72 8.00 (0) 8.00 (0)
Mass [M] 0.63 0.526 0.433
log(Luminosity) [L]
Cooling age [Gyr] 0.3056
log(H/He) -5.848 <-5.68
log(C/He)
log(Ca/He) <-9.99
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] 3.46 (0.2) 3.38 (0.3) 3.46 (0.2)
Distance [pc] 289.14 (19) 296.17 (31) 250.00 289.13 (19)
Composition He
Proper motion (right ascension) [mas/yr] 16.63738546 (0.2) 16.12183878 (0.6) 16.637 (0.2)
Proper motion (declination) [mas/yr] -30.56861136 (0.2) -30.37223806 (0.4) -30.569 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.79 (0.02) 18.79 (0.02) 18.79 (0.02)
g magnitude 18.77 (0.008) 18.77 (0.01) 18.77 (0.008)
r magnitude 18.99 (0.01) 18.99 (0.01) 18.99 (0.01)
i magnitude 19.18 (0.02) 19.18 (0.02) 19.18 (0.01)
z magnitude 19.46 (0.06) 19.46 (0.06) 19.46 (0.06)
G magnitude 18.87 (0.02) 18.92 18.87 (0.004)
BP magnitude 18.91 (0.02) 18.88
RP magnitude 18.98 (0.05) 18.87
Pan g magnitude 18.84 (0.01)
Pan r magnitude 19.00 (0.007)
Pan i magnitude 19.21 (0.01)
Pan z magnitude 19.36 (0.02)
Pan y magnitude 19.44 (0.05)
E(B-V) 0.020

* 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.