(4030) Archenhold Main-belt Asteroid

Discovered on 2 March 1984 by H. Debehogne at La Silla.

Named in memory of the German astronomer Friedrich Simon Archenhold (1861-1939). In 1896 he made it possible to build the world's longest refractor (focal length 21 meters), which is still in use at the Archenhold Observatory in Berlin---Europe's first public observatory. As its first director Archenhold had the aim of introducing astronomy to everyone. Name suggested by A. Gnädig and A. Doppler and endorsed by L. D. Schmadel.Naming citation (19990402/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL

Where Archenhold is today

Seen from above the solar system on 2026-10-14: Archenhold is 2.51 au from the Sun and 3.45 au from Earth. Computed from JPL's orbital elements.

Facts

Number	4030
Provisional designation	1984 EO1
Orbit class	Main-belt Asteroid
Diameter	6.97 km (#7,690 largest of 17,440 named asteroids with a measured size)
Albedo	0.251
Rotation period	3.27 hours
Absolute magnitude (H)	13.3
Orbital period	3.86 years
Semi-major axis	2.46 au
Perihelion – aphelion	2.24 – 2.69 au
Eccentricity	0.0917
Inclination	6.54°
Closest distance between its orbit and Earth's (MOID)	1.23 au

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

Also named after someone called Friedrich

All asteroids named after someone called Friedrich

Also discovered on 2 March 1984

More named asteroids discovered by H. Debehogne

All 203

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