CBS 440

All names: Gaia DR3 766156955118251136, Gaia DR2 766156955118251136, Gaia EDR3 766156955118251136, GALEX J113816.3+382635, SDSS J113816.29+382635.12, SDSS J113816.29+382635.1, SDSS J113816.30+382635.1, CBS 440

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 SDSS DR10 Bedard et al. 2020 MWDD H Gaia DR2 Stilism Kepler et al. 2015 Reindl et al. 2014 Simbad Vincent et al. 2023
Right ascension 11 38 16.29 (0.1) 11 38 16.31 11 38 16.31 11 38 16.29 (0.2) 11 38 16.31 (0.1)
Declination 38 26 35.06 (0.1) 38 26 35.18 38 26 35.18 38 26 35.06 (0.2) 38 26 35.19 (0.1)
Spectral type DO DO DO DO DO
Effective temperature [K] 81140.0 (4647) 27258.0 65000.0 (10000) 65000.0
log(g) [cgs] 8.54 (0.2) 6.37 8.75 (0.5) 8.75 (0.5)
Mass [M] 0.98 (0.1) 0.207 1.08 (0.2) 1.08
log(Luminosity) [L] 0.48 (0.2)
Cooling age [Gyr] 0.0004 (0.0001)
log(H/He)
log(C/He) <0.01
log(Ca/He)
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 0.92 (0.1) 0.63 (0.4) 0.92 (0.1)
Distance [pc] 1084.60 (176) 1592.64 (1014) 1084.60 (176)
Composition He
Proper motion (right ascension) [mas/yr] -19.87571939 (0.1) -20.26928486 (0.4) -19.876 (0.1)
Proper motion (declination) [mas/yr] -8.306825468 (0.1) -8.265670145 (0.3) -8.307 (0.1)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 17.61 (0.01) 17.61 (0.01) 17.57 (0.03) 17.61 (0.01)
g magnitude 18.08 (0.006) 18.08 (0.006) 18.10 (0.03) 18.08 18.08 (0.006)
r magnitude 18.60 (0.009) 18.60 (0.009) 18.60 (0.02) 18.60 (0.009)
i magnitude 18.96 (0.01) 18.96 (0.01) 18.96 (0.02) 18.96 (0.01)
z magnitude 19.31 (0.06) 19.31 (0.06) 19.31 (0.06) 19.31 (0.06)
G magnitude 18.32 (0.02) 18.35 18.32 (0.003)
BP magnitude 18.16 (0.02) 18.09
RP magnitude 18.60 (0.05) 18.58
Pan g magnitude 18.17 (0.004)
Pan r magnitude 18.57 (0.005)
Pan i magnitude 18.96 (0.006)
Pan z magnitude 19.26 (0.01)
Pan y magnitude 19.38 (0.04)
E(B-V) 0.017

* 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.