SDSS J171720.52+373605.8

All names: Gaia DR3 1340088998181797120, SDSS J171720.52+373605.83, Gaia DR2 1340088998181797120, SDSS J171720.52+373605.9, Gaia EDR3 1340088998181797120, SDSS J171720.52+373605.8

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 SDSS DR10 Bedard et al. 2020 Gaia DR2 Stilism Kepler et al. 2015 Reindl et al. 2014 Vincent et al. 2024 Simbad Vincent et al. 2023
Right ascension 17 17 20.53 (0.08) 17 17 20.52 17 17 20.52 17 17 20.53 (0.1) 17 17 20.53 17 17 20.52 (0.08)
Declination 37 36 05.85 (0.09) 37 36 05.93 37 36 05.93 37 36 05.85 (0.1) 37 36 05.85 37 36 05.94 (0.09)
Spectral type DOZ DO DO DO DO
Effective temperature [K] 62750.0 (1520) 60000.0 (5000) 60000.0 75480.0 (22338)
log(g) [cgs] 8.18 (0.1) 7.75 (0.2) 7.75 (0.2) 7.72 (0.2)
Mass [M] 0.76 (0.08) 0.56 (0.08) 0.56 0.579 (0.1)
log(Luminosity) [L] 0.28 (0.1)
Cooling age [Gyr] 0.0011 (0.0001)
log(H/He)
log(C/He) 0.003
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] 1.08 (0.1) 1.02 (0.1) 1.08 1.08 (0.1)
Distance [pc] 923.11 (88) 976.36 (129) 923.11 923.11 (88)
Composition He
Proper motion (right ascension) [mas/yr] 5.37455263 (0.1) 5.393519737 (0.2) 5.375 (0.1)
Proper motion (declination) [mas/yr] -6.074683686 (0.1) -5.72394272 (0.3) -6.075 (0.1)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 17.47 (0.009) 17.47 (0.009) 17.49 (0.02) 17.47 (0.009)
g magnitude 17.88 (0.006) 17.88 (0.006) 17.91 (0.02) 17.88 17.88 (0.006)
r magnitude 18.40 (0.008) 18.40 (0.008) 18.42 (0.02) 18.40 (0.008)
i magnitude 18.75 (0.01) 18.75 (0.01) 18.75 (0.02) 18.75 (0.01)
z magnitude 19.09 (0.05) 19.09 (0.05) 19.10 (0.05) 19.09 (0.04)
G magnitude 18.14 (0.008) 18.18 18.14 18.14 (0.003)
BP magnitude 17.98 (0.008) 17.90
RP magnitude 18.48 (0.03) 18.44
Pan g magnitude 17.93 (0.006)
Pan r magnitude 18.42 (0.003)
Pan i magnitude 18.77 (0.008)
Pan z magnitude 19.09 (0.02)
Pan y magnitude 19.25 (0.02)
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.