(9699) Baumhauer Main-belt Asteroid

Discovered on 26 March 1971 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.

Albert Gillis von Baumhauer (1891-1939) invented the tail rotor for helicopters and built the first Dutch helicopter, which took off on 1925 Dec. 17. He was strongly involved in pioneering gliding in the Netherlands and was killed in the Boeing Stratoliner plane crash in 1939.Naming citation (20001111/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL

Where Baumhauer is today

Seen from above the solar system on 2026-10-14: Baumhauer is 2.74 au from the Sun and 3.72 au from Earth. Computed from JPL's orbital elements.

Facts

Number	9699
Provisional designation	3036 T-1
Orbit class	Main-belt Asteroid
Diameter	9.23 km (#5,595 largest of 17,440 named asteroids with a measured size)
Albedo	0.0560
Rotation period	16.7 hours
Absolute magnitude (H)	14.08
Orbital period	4.27 years
Semi-major axis	2.63 au
Perihelion – aphelion	2.04 – 3.22 au
Eccentricity	0.223
Inclination	11.7°
Closest distance between its orbit and Earth's (MOID)	1.07 au

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

Also named after someone called Albert

All asteroids named after someone called Albert

Also discovered on 26 March 1971

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

All 958

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