CBS 238

All names: SDSS J151732.48+425340.4, USNO-B1.0 1328-00335080, SDSS J151732.50+425340.2, PSO J151732.494+425340.534, Gaia DR2 1392710284657419264, SDSS J151732.48+425340.49

Parameter Unit MWDD H Pan-STARRS DR1 Gaia DR2 Kepler et al. 2015 SDSS DR10 Simbad
Right ascension 15 17 32.48 (0.09) 15 17 32.51 15 17 32.50
Declination 42 53 40.64 (0.1) 42 53 40.28 42 53 40.28
Spectral type DA DA DA
Effective temperature [K] 17995.0 25495.0 (163)
log(g) [cgs] 7.66 8.10 (0.02)
Mass [M☉] 0.45 0.685 (0.01)
log(Luminosity) [L☉]
Cooling age [Gyr] 0.0567
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] 3.52 (0.1)
Distance [pc] 283.93 (1e+01)
Composition H
Proper motion (right ascension) [mas/yr] -24.891561644 (0.2) -22.0
Proper motion (declination) [mas/yr] 25.8035952829 (0.3) 26.0
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 17.10
V magnitude
R magnitude 18.00
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 17.50 (0.02) 17.49 (0.01) 17.49
g magnitude 17.52 (0.02) 17.51 (0.005) 17.51
r magnitude 17.92 (0.02) 17.89 (0.006) 17.89
i magnitude 18.23 (0.01) 18.22 (0.009) 18.22
z magnitude 18.57 (0.03) 18.56 (0.03) 18.57
G magnitude 17.76
BP magnitude 17.61
RP magnitude 17.91
Pan g magnitude 17.60 (0.004)
Pan r magnitude 17.92 (0.004)
Pan i magnitude 18.25 (0.005)
Pan z magnitude 18.49 (0.009)
Pan y magnitude 18.65 (0.02)

* Constant surface field

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The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour at Université de Montréal. Please send database updates, corrections, suggestions or bug reports to dufourpa@astro.umontreal.ca.