SDSS J114055.94+301827.9

All names: SDSS J114055.95+301828.0, GALEX J114055.9+301828, Gaia DR3 4020986418745699328, LAMOST J114055.94+301828.0, Gaia DR2 4020986418745699328, [HHD2009] SDSS J1140+3018, US 2790, WIRED J114055.94+301828.0, SDSS J114055.94+301827.9, WD 1138+305, Gaia EDR3 4020986418745699328

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Vincent et al. 2024 Simbad White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 11 40 55.91 (0.1) 11 40 55.95 11 40 55.91 (0.3) 11 40 55.91 11 40 55.96 (0.1) 11 40 55.25 11 40 55.95
Declination 30 18 28.03 (0.2) 30 18 27.96 30 18 28.02 (0.3) 30 18 28.03 30 18 27.95 (0.2) 30 18 21.96 30 18 28.02
Spectral type DA+M DA DA+M DA3.2 DA+M DA
Effective temperature [K] 10101.0 8856.0 (220) 11801.0 (210)
log(g) [cgs] 6.97 6.94 (0.07) 8.07 (0.07)
Mass [M] 0.215 0.198 (0.02)
log(Luminosity) [L]
Cooling age [Gyr]
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] 3.72 (0.2) 2.98 (0.3) 3.72 3.72 (0.2)
Distance [pc] 268.52 (14) 335.32 (34) 268.52 268.52 (14)
Composition H
Proper motion (right ascension) [mas/yr] -40.57772571 (0.2) -39.98891523 (0.6) -40.578 (0.2)
Proper motion (declination) [mas/yr] 4.403221649 (0.2) 4.546622746 (0.5) 4.403 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity yes WDMS
B magnitude 18.50
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.61 (0.02) 18.61 (0.02) 18.63 18.65 (0.02)
g magnitude 18.20 (0.006) 18.20 (0.006) 18.23 18.23 (0.02)
r magnitude 18.41 (0.008) 18.41 (0.008) 18.47 18.47 (0.02)
i magnitude 18.45 (0.01) 18.45 (0.01) 18.52 18.53 (0.02)
z magnitude 18.31 (0.02) 18.31 (0.02) 18.39 18.39 (0.03)
G magnitude 18.31 (0.01) 18.33 18.31 18.31 (0.004)
BP magnitude 18.32 (0.01) 18.28
RP magnitude 18.10 (0.02) 18.10
Pan g magnitude 18.23 (0.006)
Pan r magnitude 18.42 (0.007)
Pan i magnitude 18.54 (0.01)
Pan z magnitude 18.44 (0.01)
Pan y magnitude 18.31 (0.02)
E(B-V) 0.019

* 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.