LBQS 1340+0237

All names: LAMOST J134259.84+022209.6, SDSS J134259.83+022209.4, LBQS 1340+0237, PSO J134259.831+022209.482, Gaia DR2 3665169715669748096, SDSS J134259.84+022209.62

Parameter Unit MWDD H Pan-STARRS DR1 Gaia DR2 Kepler et al. 2015 SDSS DR10 Simbad
Right ascension 13 42 59.83 (0.1) 13 42 59.84 13 42 59.84
Declination 02 22 09.39 (0.1) 02 22 09.44 02 22 09.44
Spectral type DA DA DA
Effective temperature [K] 13856.0 22654.0 (139)
log(g) [cgs] 7.46 7.99 (0.02)
Mass [M☉] 0.358 0.623 (0.01)
log(Luminosity) [L☉]
Cooling age [Gyr] 0.1288
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] 4.03 (0.2)
Distance [pc] 247.99 (10)
Composition H
Proper motion (right ascension) [mas/yr] -12.5507605637 (0.3) -11.0
Proper motion (declination) [mas/yr] -11.0837443149 (0.2) -6.0
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 17.96
H magnitude 18.10
K magnitude 18.10
u magnitude 17.64 (0.02) 17.66 (0.01) 17.66
g magnitude 17.52 (0.01) 17.50 (0.005) 17.50
r magnitude 17.81 (0.02) 17.79 (0.006) 17.79
i magnitude 18.07 (0.02) 18.05 (0.009) 18.05
z magnitude 18.31 (0.03) 18.30 (0.03) 18.30
G magnitude 17.69
BP magnitude 17.63
RP magnitude 17.78
Pan g magnitude 17.55 (0.005)
Pan r magnitude 17.81 (0.006)
Pan i magnitude 18.08 (0.004)
Pan z magnitude 18.31 (0.008)
Pan y magnitude 18.48 (0.03)

* 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.