SDSS J114521.64-024757.5

All names: LBQS 1142-0231, Gaia DR3 3792752341968590464, [VV2003b] J114521.6-024759, SDSS J114521.64-024757.3, 2QZ J114521.6-024758, SDSS J114521.64-024757.4, Gaia DR2 3792752341968590464, Gaia EDR3 3792752341968590464, SDSS J114521.64-024757.5, GALEX J114521.6-024756

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 11 45 21.63 (0.2) 11 45 21.64 11 45 21.63 (0.3) 11 45 21.63 11 45 21.64 (0.2) 11 45 21.64
Declination -02 47 57.71 (0.1) -02 47 57.48 -02 47 57.71 (0.2) -02 47 57.71 -02 47 57.51 (0.1) -02 47 57.38
Spectral type DC DC DC DC DC DC
Effective temperature [K] 10013.0 10199.0 10262.0 (605) 10476.0 (224)
log(g) [cgs] 7.82 7.77 7.58 (0.1) 8.24 (0.4)
Mass [M] 0.498 0.454 0.369 (0.07)
log(Luminosity) [L]
Cooling age [Gyr] 0.4801 0.4413
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 4.19 (0.2) 4.60 (0.3) 4.19 4.19 (0.2)
Distance [pc] 238.56 (12) 217.63 (14) 238.56 238.56 (12)
Composition
Proper motion (right ascension) [mas/yr] -8.990464803 (0.3) -9.718419929 (0.8) -8.99 (0.3)
Proper motion (declination) [mas/yr] -12.41655844 (0.2) -11.23902918 (0.4) -12.417 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude 18.79
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.69 (0.02) 18.69 (0.02) 18.67 (0.03)
g magnitude 18.54 (0.008) 18.54 (0.008) 18.56 (0.03)
r magnitude 18.65 (0.01) 18.65 (0.01) 18.65 (0.02)
i magnitude 18.78 (0.01) 18.78 (0.01) 18.77 (0.02)
z magnitude 18.91 (0.05) 18.91 (0.05) 18.92 (0.05)
G magnitude 18.58 (0.03) 18.62 18.58 18.58 (0.004)
BP magnitude 18.66 (0.03) 18.60
RP magnitude 18.50 (0.04) 18.45
Pan g magnitude 18.58 (0.008)
Pan r magnitude 18.68 (0.01)
Pan i magnitude 18.84 (0.01)
Pan z magnitude 18.99 (0.02)
Pan y magnitude 19.10 (0.03)
E(B-V) 0.020

* 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.