(9136) Lalande Main-belt Asteroid

Discovered on 13 May 1971 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.

Named in memory of Joseph-Jérôme Lefrançais de Lalande (1732-1807), famous French astronomer who computed many useful tables for practical astronomical work and authored many papers and textbooks. After some years as an assistant to Delisle, Le Monnier and Lacaille, Lalande went to Berlin in order to prepare measurements for determining the lunar parallax. He was a member of the Berlin and Paris academies of science and was editor of many volumes of the almanac Connaissance des temps during 1760-1776 and 1794-1807. His monumental Bibliographie astronomique (1802) has lasted for two centuries.Naming citation (19990402/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL

Where Lalande is today

Seen from above the solar system on 2026-10-14: Lalande is 2.60 au from the Sun and 2.31 au from Earth. Computed from JPL's orbital elements.

Facts

Number	9136
Provisional designation	4886 T-1
Orbit class	Main-belt Asteroid
Diameter	3.71 km (#13,439 largest of 17,440 named asteroids with a measured size)
Albedo	0.268
Rotation period	5.75 hours
Absolute magnitude (H)	13.88
Orbital period	3.80 years
Semi-major axis	2.43 au
Perihelion – aphelion	2.08 – 2.79 au
Eccentricity	0.148
Inclination	6.69°
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 Jerome

All asteroids named after someone called Jerome

Also discovered on 13 May 1971

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

All 958

← (9135) Lacaille · (9137) Remo →