(25233) Tallman Main-belt Asteroid

Discovered on 14 October 1998 by LONEOS at Anderson Mesa.

Gary Tallman (b. 1943) has volunteered in Lowell Observatory's daytime outreach programs since 2012, leading tours of the historic campus and hosting Putnam Collection Center open houses. He also operates the solar telescopes, explaining visible features of the Sun to visitors.Naming citation (MPC batch dated 2018-05-29), IAU / Minor Planet Center, via NASA/JPL

Where Tallman is today

Seen from above the solar system on 2026-10-14: Tallman is 3.26 au from the Sun and 4.19 au from Earth. Computed from JPL's orbital elements.

Facts

Number	25233
Provisional designation	1998 TD34
Orbit class	Main-belt Asteroid
Diameter	6.81 km (#7,857 largest of 17,440 named asteroids with a measured size)
Albedo	0.138
Absolute magnitude (H)	13.69
Orbital period	5.20 years
Semi-major axis	3.00 au
Perihelion – aphelion	2.68 – 3.32 au
Eccentricity	0.107
Inclination	10.1°
Closest distance between its orbit and Earth's (MOID)	1.68 au

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

Also named after someone called Gary

All asteroids named after someone called Gary

Also discovered on 14 October 1998

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