SDSS J132029.01+174756.1

All names: Gaia DR2 3938463776113928064, SDSS J132029.01+174756.1, SDSS J132029.02+174756.2, Gaia EDR3 3938463776113928064, SDSS J132029.02+174756.18, Gaia DR3 3938463776113928064, SDSS J132029.02+174756.1, GALEX J132029.0+174756

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 Vincent et al. 2024 Simbad Vincent et al. 2023
Right ascension 13 20 29.01 (0.2) 13 20 29.01 13 20 29.01 (0.2) 13 20 29.01 13 20 29.01 (0.2)
Declination 17 47 56.16 (0.1) 17 47 56.17 17 47 56.16 (0.2) 17 47 56.16 17 47 56.14 (0.1)
Spectral type DB DB DB DB DB+MS
Effective temperature [K] 14747.0 15141.0 13652.0 15034.0 (60) 15098.0 (99) 17343.0 (1784)
log(g) [cgs] 7.71 7.98 7.84 8.00 (0) 7.98 (0.08) 8.15 (0.1)
Mass [M] 0.437 0.576 0.497 0.599 (0.04) 0.687 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 0.2086
log(H/He) -5.725 -5.4 (0.5)
log(C/He)
log(Ca/He) <-7.56
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] 2.89 (0.3) 2.89 (0.3) 2.89 2.89 (0.3)
Distance [pc] 346.22 (31) 346.29 (36) 334.00 346.22 346.22 (31)
Composition He
Proper motion (right ascension) [mas/yr] 1.747959273 (0.3) 2.505798741 (0.6) 1.748 (0.3)
Proper motion (declination) [mas/yr] 1.294438802 (0.2) 0.631194303 (0.4) 1.294 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity WDMS
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.77 (0.02) 18.77 (0.02) 18.77 (0.02)
g magnitude 18.83 (0.009) 18.88 (0.03) 18.83 (0.009)
r magnitude 19.12 (0.01) 19.12 (0.01) 19.12 (0.01)
i magnitude 19.35 (0.02) 19.34 (0.02) 19.35 (0.02)
z magnitude 19.57 (0.07) 19.57 (0.07) 19.57 (0.07)
G magnitude 18.94 (0.02) 18.99 18.94 18.94 (0.003)
BP magnitude 18.89 (0.02) 18.84
RP magnitude 19.06 (0.03) 19.05
Pan g magnitude 18.85 (0.006)
Pan r magnitude 19.11 (0.004)
Pan i magnitude 19.36 (0.006)
Pan z magnitude 19.55 (0.02)
Pan y magnitude 19.54 (0.05)
E(B-V) 0.026

* 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.