SDSS J122833.66+385401.8

All names: SDSS J122833.66+385401.7, Gaia EDR3 1532213021454545920, GALEX J122833.7+385401, Gaia DR3 1532213021454545920, Gaia DR2 1532213021454545920, SDSS J122833.66+385401.8, SDSS J122833.66+385401.80

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 12 28 33.67 (0.5) 12 28 33.66 12 28 33.67 (0.9) 12 28 33.67 (0.5) 12 28 33.66
Declination 38 54 01.70 (0.4) 38 54 01.78 38 54 01.71 (0.6) 38 54 01.82 (0.4) 38 54 01.78
Spectral type DB DB DB DB:
Effective temperature [K] 14166.0 15747.0 12300.0 14479.0 (566)
log(g) [cgs] 7.11 7.46 7.07 7.51 (0.4)
Mass [M] 0.245 0.343 0.227 0.349 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 0.1517
log(H/He) <-5.974
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] 1.27 (0.6) 1.04 (0.9) 1.27 (0.6)
Distance [pc] 784.71 (397) 959.73 (864) 784.74 (397)
Composition He
Proper motion (right ascension) [mas/yr] 2.497747931 (0.5) 1.545997632 (1) 2.498 (0.5)
Proper motion (declination) [mas/yr] -7.209659566 (0.7) -7.685742937 (1) -7.21 (0.7)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.16 (0.05) 20.16 (0.05) 20.16 (0.05)
g magnitude 20.16 (0.02) 20.16 (0.02) 20.19 (0.02)
r magnitude 20.46 (0.03) 20.46 (0.03) 20.48 (0.03)
i magnitude 20.73 (0.05) 20.73 (0.05) 20.75 (0.06)
z magnitude 21.16 (0.3) 21.16 (0.3) 21.13 (0.2)
G magnitude 20.32 (0.09) 20.39 20.32 (0.007)
BP magnitude 20.18 (0.09) 20.19
RP magnitude 20.12 (0.1) 20.34
Pan g magnitude 20.24 (0.03)
Pan r magnitude 20.51 (0.02)
Pan i magnitude 20.65 (0.03)
Pan z magnitude 20.85 (0.03)
Pan y magnitude 20.35 (0.2)
E(B-V) 0.016

* 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.