(5406) Jonjoseph Main-belt Asteroid

Discovered on 9 August 1991 by H. E. Holt at Palomar.

Named in honor of Jonathan Joseph (b. 1966), computer programmer analyst at Cornell University. Joseph has worked on the NASA NEAR, Comet Nucleus Tour and Cassini missions, lending his creativity and technical expertise in support of imaging science goals. He has been instrumental in creating motion picture renderings of minor planets and comets to enhance our understanding of their shapes, sizes and other physical properties. Known for his sense of humor, Joseph is also a fine limerick poet and finger-paint artist. Citation written by B. E. Clark.Naming citation (19990728/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL

Where Jonjoseph is today

Seen from above the solar system on 2026-10-14: Jonjoseph is 2.95 au from the Sun and 1.97 au from Earth. Computed from JPL's orbital elements.

Facts

Number	5406
Provisional designation	1991 PH11
Orbit class	Main-belt Asteroid
Diameter	16.9 km (#2,707 largest of 17,440 named asteroids with a measured size)
Albedo	0.0750
Rotation period	3.56 hours
Absolute magnitude (H)	12.57
Orbital period	4.35 years
Semi-major axis	2.67 au
Perihelion – aphelion	2.34 – 2.99 au
Eccentricity	0.122
Inclination	6.13°
Closest distance between its orbit and Earth's (MOID)	1.33 au

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

Also named after someone called Jonathan

All asteroids named after someone called Jonathan

Also discovered on 9 August 1991

(4976) Choukyongchol

More named asteroids discovered by H. E. Holt

All 119

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