(341520) Mors-Somnus Trans-Neptunian Object
Discovered on 14 October 2007 by Sheppard, S. S., Trujillo, C. at Mauna Kea.
Mors and Somnus are twin gods of the underworld and offspring of Nox. Mors is the Roman personification of death and Somnus is the Roman personification of sleep. This object is an equal-sized binary in resonance with Neptune.Naming citation (MPC batch dated 2015-06-02), IAU / Minor Planet Center, via NASA/JPL
Where Mors-Somnus is today
Seen from above the solar system on 2026-10-14: Mors-Somnus is 29.4 au from the Sun and 28.7 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 341520 |
| Provisional designation | 2007 TY430 |
| Orbit class | Trans-Neptunian Object |
| Rotation period | 9.28 hours |
| Absolute magnitude (H) | 6.79 |
| Orbital period | 248 years |
| Semi-major axis | 39.5 au |
| Perihelion – aphelion | 28.9 – 50.1 au |
| Eccentricity | 0.269 |
| Inclination | 11.3° |
| Closest distance between its orbit and Earth's (MOID) | 27.9 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 14 October 2007
- (173094) Wielicki
- (333620) Scottfrancis
- (341359) Gregneumann
- (345971) Marktorrence
- (345972) Rufin
- (400309) Ralfhofner
- (417955) Mallama