In April 2016, the "Dawn" project team submitted a proposal to NASA for an extended mission that would have seen the spacecraft break orbit from Ceres and perform a flyby of the asteroid 145 Adeona in May 2019, arguing that the science gained from visiting a third asteroid might outweigh the returns from staying at Ceres. NASA's Planetary Mission Senior Review Panel, however, declined the proposal in May 2016. A one-year mission extension was approved, but the review panel ordered that "Dawn" remain at Ceres, stating that the long-term observations of the dwarf planet, particularly as it approached perihelion, would potentially yield better science.