USNO-A2.0 1125-08088646

All names: SDSS J171323.15+280954.0, SDSS J171323.15+280954.1, GALEX J171323.1+280955, USNO-A2.0 1125-08088646, Gaia EDR3 4575197247591248000, SDSS J171323.16+280954.2, SDSS J171323.16+280954.20, Gaia DR3 4575197247591248000, WD 1711+282, Gaia DR2 4575197247591248000

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 Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 17 13 23.15 (0.1) 17 13 23.15 17 13 23.15 (0.2) 17 13 23.15 17 13 23.16 (0.1) 17 13 23.16 17 13 22.73 17 13 23.16
Declination 28 09 54.03 (0.2) 28 09 54.17 28 09 54.04 (0.2) 28 09 54.03 28 09 54.18 (0.2) 28 09 54.15 28 09 51.48 28 09 54.17
Spectral type DB DB DB DB DB DB DB+MS
Effective temperature [K] 15537.0 16963.0 14971.0 15948.0 (124) 14283.0 (980) 16612.0 (197) 16097.0 (216)
log(g) [cgs] 7.99 8.32 8.18 8.00 (0) 8.05 (0.1) 8.25 (0.1) 8.26 (0.1)
Mass [M] 0.584 0.789 0.699 0.619 (0.09) 0.744 (0.09)
log(Luminosity) [L]
Cooling age [Gyr] 0.2743
log(H/He) <-6.02 <-4.89
log(C/He)
log(Ca/He) <-6.42
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] 3.03 (0.2) 3.13 (0.2) 3.03 3.03 (0.2)
Distance [pc] 329.86 (20) 319.76 (24) 370.00 329.86 329.86 (20)
Composition He
Proper motion (right ascension) [mas/yr] -8.24678466 (0.2) -8.550894902 (0.4) -8.247 (0.2) -5.0
Proper motion (declination) [mas/yr] -8.957747785 (0.2) -8.880965934 (0.4) -8.958 (0.2) -15.9
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity WDMS
B magnitude 18.00 (0.3)
V magnitude
R magnitude 18.80 (0.3)
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.82 (0.02) 18.82 (0.02) 18.80 (0.02) 18.79 18.82 (0.02)
g magnitude 18.93 (0.009) 18.93 (0.009) 18.95 (0.01) 18.95 18.96 (0.01)
r magnitude 19.22 (0.01) 19.22 (0.01) 19.22 (0.02) 19.22 19.21 (0.02)
i magnitude 19.50 (0.02) 19.50 (0.02) 19.52 (0.02) 19.52 19.52 (0.02)
z magnitude 19.63 (0.06) 19.63 (0.06) 19.63 (0.05) 19.63 19.63 (0.05)
G magnitude 19.06 (0.02) 19.11 19.06 19.06 (0.004)
BP magnitude 19.05 (0.02) 18.95
RP magnitude 19.16 (0.04) 19.08
Pan g magnitude 18.96 (0.004)
Pan r magnitude 19.23 (0.006)
Pan i magnitude 19.47 (0.01)
Pan z magnitude 19.71 (0.03)
Pan y magnitude 19.87 (0.03)
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.