Kepler-408 is one of the 33 planet-hosting Kepler stars for which asteroseismology has been used to investigate the orientation of the stellar rotation axis relative to the planetary orbital plane . The transiting “ hot Earth , ” Kepler-408b , has an orbital period of 2.5 days and a radius of 0.86 R _ { \oplus } , making it much smaller than the planets for which spin-orbit alignment has been studied using the Rossiter-McLaughlin effect . Because conflicting asteroseismic results have been reported in the literature , we undertake a thorough re-appraisal of this system and perform numerous checks for consistency and robustness . We find that the conflicting results are due to the different models for the low-frequency noise in the power spectrum . A careful treatment of the background noise resolves these conflicts , and shows that the stellar inclination is i _ { \star } = 42 ^ { +5 } _ { -4 } degrees . Kepler-408b is , by far , the smallest planet known to have a significantly misaligned orbit .