SDSS J114238.68+572747.2

All names: SDSS J114238.69+572747.5, SDSS J114238.68+572747.2, Gaia DR3 845743248869567232, Gaia DR2 845743248869567232, LAMOST J114238.68+572747.4, SDSS J114238.69+572747.50, SDSS J114238.68+572747.4, LAMOST J114238.67+572747.4, SDSS J114238.60+572747.2, SDSS J114238.69+572747.2, WD 1139+577, Gaia EDR3 845743248869567232, SDSS J114238.69+572747.3

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Guo et al. 2015 Koester & Kepler 2015 Vincent et al. 2024 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 11 42 38.59 (0.09) 11 42 38.69 11 42 38.59 (0.1) 11 42 38.59 11 42 38.70 (0.09) 11 42 38.69 11 42 38.33 11 42 38.69
Declination 57 27 47.27 (0.1) 57 27 47.30 57 27 47.27 (0.1) 57 27 47.27 57 27 47.28 (0.1) 57 27 47.47 57 27 45.36 57 27 47.48
Spectral type DB DB;DBH? DB DB DB DB DBH DB
Effective temperature [K] 18788.0 19547.0 17739.0 19149.0 (175) 18951.0 (1534) 18954.0 (200) 18876.0 (290)
log(g) [cgs] 8.45 8.30 8.20 8.39 (0.05) 8.27 (0.09) 8.48 (0.06) 8.46 (0.07)
Mass [M] 0.876 0.779 0.715 0.761 (0.07)
log(Luminosity) [L]
Cooling age [Gyr] 0.1687
log(H/He) -5.27 <-4.46
log(C/He)
log(Ca/He) <-4.73
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] 3.34 (0.1) 3.33 (0.2) 3.34 3.34 (0.1)
Distance [pc] 299.18 (12) 300.54 (15) 270.00 299.18 299.18 (12)
Composition He
Proper motion (right ascension) [mas/yr] -57.48583879 (0.1) -57.00701209 (0.2) -57.486 (0.1) -58.9
Proper motion (declination) [mas/yr] -0.571706145 (0.1) -0.734971199 (0.2) -0.572 (0.1) 1.7
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.26 (0.01) 18.26 (0.01) 18.27 (0.02) 18.26 18.28 (0.02)
g magnitude 18.37 (0.007) 18.37 (0.007) 18.38 (0.03) 18.37 18.39 (0.03)
r magnitude 18.74 (0.01) 18.74 (0.01) 18.72 (0.06) 18.71 18.73 (0.06)
i magnitude 19.00 (0.02) 19.00 (0.02) 19.01 (0.02) 19.00 19.02 (0.02)
z magnitude 19.34 (0.08) 19.34 (0.08) 19.35 (0.08) 19.34 19.36 (0.08)
G magnitude 18.58 (0.01) 18.62 18.58 18.58 (0.003)
BP magnitude 18.52 (0.01) 18.47
RP magnitude 18.70 (0.02) 18.75
Pan g magnitude 18.44 (0.009)
Pan r magnitude 18.76 (0.01)
Pan i magnitude 19.04 (0.007)
Pan z magnitude 19.28 (0.01)
Pan y magnitude 19.41 (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.