[SLH2007] J115705.52+452011.0

All names: Gaia EDR3 773198876122756608, WD 1154+456, Gaia DR3 773198876122756608, Gaia DR2 773198876122756608, SDSS J115705.53+452011.10, [SHW2006] J115705.52+452011.0, [SLH2007] J115705.52+452011.0, SDSS J115705.52+452011.0, SDSS J115705.53+452011.1

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Simbad White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 11 57 05.51 (0.2) 11 57 05.53 11 57 05.51 (0.2) 11 57 05.53 (0.2) 11 57 04.99 11 57 05.53
Declination 45 20 11.01 (0.2) 45 20 11.08 45 20 11.01 (0.2) 45 20 11.07 (0.2) 45 20 06.00 45 20 11.07
Spectral type DB DB+dM DB dM DB DB
Effective temperature [K] 18984.0 19378.0 15877.0 17544.0 (142) 19796.0 (995)
log(g) [cgs] 8.47 8.06 7.80 7.89 (0.07) 8.40 (0.2)
Mass [M] 0.89 0.633 0.485 0.839 (0.09)
log(Luminosity) [L]
Cooling age [Gyr] 0.1198
log(H/He) <-5.154 <-4.64
log(C/He)
log(Ca/He) <-5.67
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] 1.76 (0.3) 1.94 (0.4) 1.94 (0.4)
Distance [pc] 569.00 (105) 514.81 (94) 522.00 514.80 (94)
Composition He
Proper motion (right ascension) [mas/yr] -13.63312669 (0.2) -12.84468219 (0.4) -12.845 (0.4)
Proper motion (declination) [mas/yr] -4.120373835 (0.3) -3.652613162 (0.4) -3.653 (0.4)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.15 (0.02) 19.15 (0.02) 19.11 19.12 (0.03)
g magnitude 19.25 (0.01) 19.25 (0.01) 19.24 19.26 (0.03)
r magnitude 19.58 (0.02) 19.59 (0.01) 19.58 19.59 (0.02)
i magnitude 19.84 (0.02) 19.84 (0.02) 19.83 19.84 (0.03)
z magnitude 20.23 (0.1) 20.32 (0.1) 20.28 20.29 (0.1)
G magnitude 19.41 (0.02) 19.46 19.46 (0.003)
BP magnitude 19.32 (0.02) 19.31
RP magnitude 19.46 (0.05) 19.44
Pan g magnitude 19.30 (0.009)
Pan r magnitude 19.55 (0.008)
Pan i magnitude 19.84 (0.01)
Pan z magnitude 20.11 (0.03)
Pan y magnitude 19.96 (0.1)
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.