SDSS J113743.20+134710.8

All names: J1137+1347, Gaia EDR3 3918024679587352960, SDSS J113743.20+134710.8, WDJ113743.20+134711.04, Gaia DR2 3918024679587352960, Gaia DR3 3918024679587352960, SDSS J113743.20+134710.81

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 Kilic et al. 2025 Caron et al. 2023 MWDD H MWDD HE Gaia DR2 Stilism Kepler et al. 2015 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 Vincent et al. 2023
Right ascension 11 37 43.18 (0.2) 11 37 43.20 11 37 43.18 (0.4) 11 37 43.18 11 37 43.20 (0.2) 11 37 43.18
Declination 13 47 10.01 (0.2) 13 47 10.82 13 47 10.04 (0.3) 13 47 10.01 13 47 11.04 (0.2) 13 47 10.04
Spectral type DC DC DC DC DC DC DC DC
Effective temperature [K] 6359.0 (56) 5994.0 (54) 6557.0 6325.0 8244.0 (1000) 5662.0 (397)
log(g) [cgs] 8.19 (0.03) 7.93 (0.06) 8.22 8.10 6.97 (0.5) 8.00 (0.09)
Mass [M☉] 0.69 (0.03) 0.528 (0.05) 0.728 0.637 0.569 (0.08)
log(Luminosity) [L☉]
Cooling age [Gyr] 2.2600 2.8710 2.5730
log(H/He) -3.0
log(C/He)
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] 11.64 (0.3) 11.12 (0.6) 11.12 (0.6) 11.64 11.64 (0.3) 11.12 (0.6)
Distance [pc] 85.92 (2) 89.93 (5) 89.97 (5) 85.92 85.92 (2) 89.97 (5)
Composition He He
Proper motion (right ascension) [mas/yr] -21.30375014 (0.3) -21.30904136 (0.5) -21.304 (0.3) -21.30904136
Proper motion (declination) [mas/yr] -64.34213583 (0.3) -64.27414701 (0.5) -64.342 (0.3) -64.27414701
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 18.05 (0.05)
H magnitude 18.03 (0.07)
K magnitude 17.91 (0.1)
u magnitude 19.71 (0.03) 19.71 (0.03) 19.71 (0.03) 19.71 (0.03) 19.71 (0.03)
g magnitude 19.01 (0.01) 19.01 (0.01) 19.01 (0.01) 19.01 (0.01)
r magnitude 18.76 (0.01) 18.76 (0.01) 18.76 (0.01) 18.76 (0.01)
i magnitude 18.67 (0.01) 18.67 (0.01) 18.67 (0.01) 18.67 (0.01)
z magnitude 18.67 (0.03) 18.67 (0.03) 18.67 (0.03) 18.67 (0.03)
G magnitude 18.76 (0.03) 18.79 18.76 18.76 (0.004) 18.79
BP magnitude 19.01 (0.03) 18.96 18.96
RP magnitude 18.37 (0.03) 18.35 18.35
Pan g magnitude 19.01 (0.01) 19.01 (0.01)
Pan r magnitude 18.74 (0.008) 18.74 (0.008)
Pan i magnitude 18.69 (0.01) 18.69 (0.01)
Pan z magnitude 18.72 (0.005) 18.72 (0.005)
Pan y magnitude 18.78 (0.03) 18.78 (0.03)
E(B-V) 0.004

* 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.