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We present far-infrared (FIR) properties of an extremely luminous infraredgalaxy (ELIRG) at $z_{\rm spec}$ = 3.703, WISE J101326.25+611220.1(WISE1013+6112). This ELIRG is selected as an IR-bright dust-obscured galaxy(DOG) based on the photometry from the Sloan digital sky survey (SDSS) andwide-field infrared survey explorer (WISE). In order to derive its accurate IRluminosity, we perform follow-up observations at 89 and 154 $\mu$m using thehigh-resolution airborne wideband camera-plus (HAWC+) on board the 2.7-mstratospheric observatory for infrared astronomy (SOFIA) telescope. We conductspectral energy distribution (SED) fitting with CIGALE using 15 photometricdata (0.4-1300 $\mu$m). We successfully pin down FIR SED of WISE1013+6112 andits IR luminosity is estimated to be $L_{\rm IR}$ = (1.62 $\pm$ 0.08) $\times10^{14}$ $L_{\odot}$, making it one of the most luminous IR galaxies in theuniverse. We determine the dust temperature of WISE1013+6112 is $T_{\rm dust}$= 89 $\pm$ 3 K, which is significantly higher than that of other populationssuch as SMGs and FIR-selected galaxies at similar IR luminosities. Theresultant dust mass is $M_{\rm dust}$ = (2.2 $\pm$ 0.1) $\times 10^{8}$$M_{\odot}$. This indicates that WISE1013+6112 has a significant activegalactic nucleus (AGN) and star-forming activity behind a large amount of dust.

SOFIA/HAWC+ View of an Extremely Luminous Infrared Galaxy, WISE1013+6112