(9142) Rhesus Jupiter Trojan

Discovered on 16 October 1977 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.

Named for the king of the Thracians and ally of the Trojans. He and his twelve companions were stealthily assassinated in their sleep by Odysseus and Diomedes.Naming citation (19981208/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL

👶 Rhesus as a baby name

Where Rhesus is today

Seen from above the solar system on 2026-10-14: Rhesus is 5.37 au from the Sun and 4.81 au from Earth. Computed from JPL's orbital elements.

Facts

Number	9142
Provisional designation	5191 T-3
Orbit class	Jupiter Trojan
Diameter	42.3 km (#915 largest of 17,440 named asteroids with a measured size)
Albedo	0.0620
Rotation period	7.33 hours
Absolute magnitude (H)	10.7
Orbital period	11.7 years
Semi-major axis	5.15 au
Perihelion – aphelion	4.49 – 5.82 au
Eccentricity	0.129
Inclination	12.8°
Closest distance between its orbit and Earth's (MOID)	3.47 au

Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.

Also discovered on 16 October 1977

More named asteroids discovered by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T.

All 958

← (9141) Kapur · (9143) Burkhead →