(8121) Altdorfer Main-belt Asteroid

Discovered on 24 September 1960 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.

Albrecht Altdorfer (c. 1480-1538) is one of the painters of the “Donauschool”. He created the first landscape paintings without figures. He was also an architect in the city of Regensburg and a member of the municipality. In addition to his paintings, many of his copper engravings and etchings have been preserved.Naming citation (19990402/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL

Where Altdorfer is today

Seen from above the solar system on 2026-10-14: Altdorfer is 2.45 au from the Sun and 2.72 au from Earth. Computed from JPL's orbital elements.

Facts

Number	8121
Provisional designation	2572 P-L
Orbit class	Main-belt Asteroid
Diameter	2.47 km (#16,309 largest of 17,440 named asteroids with a measured size)
Albedo	0.347
Rotation period	4.02 hours
Absolute magnitude (H)	15.22
Orbital period	3.35 years
Semi-major axis	2.24 au
Perihelion – aphelion	2.01 – 2.46 au
Eccentricity	0.101
Inclination	2.68°
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 discovered on 24 September 1960

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

All 958

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