SDSS J231708.15+080823.2

All names: GALEX J231708.3+080822, Gaia DR3 2665733402870782976, SDSS J231708.15+080823.2, Gaia EDR3 2665733402870782976, Gaia DR2 2665733402870782976, SDSS J231708.15+080823.22, GALEX J231708.0+080823

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Kepler et al. 2016 Simbad Vincent et al. 2023
Right ascension 23 17 08.14 (0.5) 23 17 08.15 23 17 08.14 (0.8) 23 17 08.16 (0.5)
Declination 08 08 23.24 (0.4) 08 08 23.25 08 08 23.24 (0.5) 08 08 23.29 (0.4)
Spectral type DA: DA: DA DA
Effective temperature [K] 6925.0 7383.0 (108)
log(g) [cgs] 7.24 7.22 (0.2)
Mass [M] 0.255 0.25 (0.04)
log(Luminosity) [L]
Cooling age [Gyr] 0.7356
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(C/H)
log(N/H)
log(O/H)
log(Na/H)
log(Mg/H)
log(Al/H)
log(Si/H)
log(P/H)
log(S/H)
log(Sc/H)
log(Ti/H)
log(Cr/H)
log(Mn/H)
log(Fe/H)
log(Ni/H)
Parallax [mas] 3.66 (0.5) 3.07 (0.7) 3.66 (0.5)
Distance [pc] 273.27 (40) 325.53 (73) 273.27 (40)
Composition H
Proper motion (right ascension) [mas/yr] -14.93698844 (0.6) -13.56324032 (2) -14.937 (0.6)
Proper motion (declination) [mas/yr] -2.802505506 (0.5) -1.675874279 (0.9) -2.803 (0.5)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.81 (0.07) 20.77 (0.07) 20.82 (0.07)
g magnitude 20.25 (0.02) 20.27 (0.03) 20.25 (0.02)
r magnitude 20.11 (0.02) 20.11 (0.02) 20.11 (0.02)
i magnitude 20.01 (0.03) 20.03 (0.03) 20.00 (0.03)
z magnitude 19.90 (0.08) 19.91 (0.07) 19.89 (0.07)
G magnitude 20.06 (0.1) 20.11 20.06 (0.006)
BP magnitude 20.37 (0.1) 20.36
RP magnitude 19.57 (0.09) 19.75
Pan g magnitude 20.23 (0.02)
Pan r magnitude 20.10 (0.01)
Pan i magnitude 20.04 (0.01)
Pan z magnitude 20.03 (0.05)
Pan y magnitude 20.10 (0.07)
E(B-V) 0.041

* 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.