SDSS J233913.27+152838.3

All names: SDSS J233913.27+152838.30, SDSS J233913.26+152838.3, Gaia EDR3 2819465198817603712, SDSS J233913.35+152838.6, Gaia DR3 2819465198817603712, SDSS J233913.27+152838.3, Gaia DR2 2819465198817603712

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 Kleinman et al. 2013 Vincent et al. 2023
Right ascension 23 39 13.37 (0.06) 23 39 13.27 23 39 13.36 (0.08) 23 39 13.37 23 39 13.26 (0.06) 23 39 13.27
Declination 15 28 38.72 (0.05) 15 28 38.31 15 28 38.71 (0.06) 15 28 38.72 15 28 38.33 (0.05) 15 28 38.33
Spectral type DB DB DB DB DB
Effective temperature [K] 16184.0 15866.0 15087.0 16348.0 (40) 16413.0 (518) 16557.0 (76)
log(g) [cgs] 8.07 7.96 7.90 8.22 (0.03) 8.02 (0.04) 8.19 (0.04)
Mass [M] 0.635 0.569 0.532 0.602 (0.03) 0.7 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 0.1649
log(H/He) -5.65 -4.96 (0.1)
log(C/He)
log(Ca/He) <-7.04
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] 6.67 (0.07) 6.68 (0.1) 6.67 6.67 (0.07)
Distance [pc] 149.94 (2) 149.65 (2) 125.00 149.94 149.94 (2)
Composition He
Proper motion (right ascension) [mas/yr] 91.66589515 (0.1) 91.48348286 (0.2) 91.666 (0.1)
Proper motion (declination) [mas/yr] 24.38083856 (0.06) 24.41648844 (0.1) 24.381 (0.06)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 16.73 (0.007) 16.73 (0.007) 16.73 (0.02)
g magnitude 16.82 (0.005) 16.82 (0.005) 16.83 (0.02)
r magnitude 17.13 (0.005) 17.13 (0.005) 17.11 (0.02)
i magnitude 17.37 (0.007) 17.37 (0.007) 17.37 (0.02)
z magnitude 17.61 (0.02) 17.61 (0.02) 17.60 (0.02)
G magnitude 16.97 (0.006) 17.00 16.97 16.97 (0.003)
BP magnitude 16.90 (0.006) 16.87
RP magnitude 17.07 (0.006) 17.08
Pan g magnitude 16.87 (0.007)
Pan r magnitude 17.13 (0.003)
Pan i magnitude 17.41 (0.007)
Pan z magnitude 17.63 (0.006)
Pan y magnitude 17.77 (0.02)
E(B-V) 0.012

* 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.