SDSS J130217.70+165008.6

All names: SDSS J130217.69+165008.5, SDSS J130217.70+165008.60, Gaia DR3 3937407901354145536, Gaia DR2 3937407901354145536, SDSS J130217.70+165008.6, GALEX J130217.7+165008, SDSS J130217.68+165008.5, Gaia EDR3 3937407901354145536

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 13 02 17.68 (0.2) 13 02 17.70 13 02 17.68 (0.3) 13 02 17.71 (0.2) 13 02 17.70
Declination 16 50 08.35 (0.2) 16 50 08.56 16 50 08.36 (0.2) 16 50 08.59 (0.2) 16 50 08.61
Spectral type DB DB DB DB
Effective temperature [K] 19848.0 20757.0 17280.0 21302.0 (963)
log(g) [cgs] 8.34 8.53 8.33 8.24 (0.1)
Mass [M] 0.81 0.93 0.8 0.739 (0.06)
log(Luminosity) [L]
Cooling age [Gyr] 0.2333
log(H/He) -4.402
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] 3.22 (0.3) 3.08 (0.3) 3.22 (0.3)
Distance [pc] 310.86 (26) 324.46 (32) 310.86 (26)
Composition He
Proper motion (right ascension) [mas/yr] -31.64001129 (0.3) -32.26127553 (0.7) -31.64 (0.3)
Proper motion (declination) [mas/yr] -15.25186155 (0.3) -15.06024858 (0.4) -15.252 (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 18.72 (0.02) 18.72 (0.02) 18.68 (0.03)
g magnitude 18.90 (0.009) 18.90 (0.009) 18.83 (0.03)
r magnitude 19.15 (0.01) 19.15 (0.01) 19.13 (0.02)
i magnitude 19.48 (0.02) 19.48 (0.02) 19.47 (0.02)
z magnitude 19.83 (0.09) 19.83 (0.09) 19.87 (0.1)
G magnitude 19.19 (0.04) 19.22 19.19 (0.008)
BP magnitude 19.10 (0.04) 19.04
RP magnitude 19.30 (0.05) 19.30
Pan g magnitude 18.89 (0.004)
Pan r magnitude 19.17 (0.03)
Pan i magnitude 19.47 (0.01)
Pan z magnitude 19.73 (0.04)
Pan y magnitude 19.66 (0.1)
E(B-V) 0.024

* 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.