(10108) Tomlinson Main-belt Asteroid

Discovered on 26 April 1992 by Shoemaker, C. S., Shoemaker, E. M. at Palomar.

Ray Tomlinson led the way in high-speed communication by developing a software program making it possible to send messages from one mainframe to another and to be sure they went to the right machine through the symbol for “at”. Thus, he invented e-mail and revolutionized our lives.Naming citation (20020921/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL

Where Tomlinson is today

Seen from above the solar system on 2026-10-14: Tomlinson is 2.35 au from the Sun and 2.05 au from Earth. Computed from JPL's orbital elements.

Facts

Number	10108
Provisional designation	1992 HM
Orbit class	Main-belt Asteroid
Diameter	4.80 km (#11,007 largest of 17,440 named asteroids with a measured size)
Albedo	0.231
Rotation period	3.30 hours
Absolute magnitude (H)	13.45
Orbital period	3.72 years
Semi-major axis	2.40 au
Perihelion – aphelion	2.04 – 2.77 au
Eccentricity	0.152
Inclination	26.0°
Closest distance between its orbit and Earth's (MOID)	1.03 au

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

Also named after someone called Ray

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