LB 11231

All names: GALEX J123024.0+302735, WD 1227+307, LB 11231, Gaia EDR3 4011852917388429440, CBS 61, Gaia DR2 4011852917388429440, SDSS J123024.06+302735.3, KUV 12279+3044, SDSS J123024.07+302735.4, Gaia DR3 4011852917388429440

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Gianninas et al. 2011 Vincent et al. 2024 Simbad White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 12 30 24.05 (0.09) 12 30 24.07 12 30 24.05 (0.1) 12 30 24.05 12 30 24.07 (0.09) 12 30 23.74 12 30 24.07
Declination 30 27 34.78 (0.05) 30 27 35.36 30 27 34.81 (0.06) 30 27 34.78 30 27 35.66 (0.05) 30 27 43.92 30 27 35.40
Spectral type DA DA DA DA3.6 DA5 DA DA
Effective temperature [K] 13222.0 13880.0 (523) 13856.0 (288) 14433.0 (174)
log(g) [cgs] 7.91 8.04 (0.06) 7.96 (0.03) 7.95 (0.03)
Mass [M] 0.555 0.63 (0.04) 0.587 (0.02) 0.585 (0.01)
log(Luminosity) [L]
Cooling age [Gyr] 0.2511
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] 6.00 (0.1) 5.96 (0.1) 6.00 6.00 (0.1)
Distance [pc] 166.56 (3) 167.65 (4) 128.00 166.56 166.56 (3)
Composition H H
Proper motion (right ascension) [mas/yr] -14.63372118 (0.1) -14.49210593 (0.2) -14.634 (0.1)
Proper motion (declination) [mas/yr] -54.87176717 (0.09) -54.84856496 (0.1) -54.872 (0.09)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 17.00
V magnitude 17.70
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 17.80 (0.01) 17.80 (0.01) 17.81 (0.03)
g magnitude 17.40 (0.005) 17.40 (0.005) 17.46 (0.03)
r magnitude 17.68 (0.006) 17.68 (0.006) 17.69 (0.01)
i magnitude 17.90 (0.008) 17.90 (0.008) 17.91 (0.02)
z magnitude 18.22 (0.03) 18.22 (0.03) 18.24 (0.03)
G magnitude 17.53 (0.006) 17.57 17.53 17.53 (0.003)
BP magnitude 17.51 (0.006)
RP magnitude 17.62 (0.01)
Pan g magnitude 17.42 (0.008)
Pan r magnitude 17.66 (0.006)
Pan i magnitude 17.91 (0.003)
Pan z magnitude 18.14 (0.008)
Pan y magnitude 18.27 (0.01)
E(B-V) 0.006

* 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.