Discovered by M. Laugier MPC designation 1461 Jean-Jacques Discovered 30 December 1937 Spectral type M-type asteroid Discovery site Nice Observatory | Discovery date 30 December 1937 Minor planet category main-belt · (outer) Orbits Sun Discoverer Marguerite Laugier Asteroid group Asteroid belt | |
Named after Jean-Jacques Laugier
(son of discoverer) Alternative names 1937 YL · 1935 OH
1939 GH People also search for 1426 Riviera, Sun, 2393 Suzuki | ||
1461 Jean-Jacques, provisional designation 1937 YL, is a metallic asteroid from the outer region of the asteroid belt, approximately 34 kilometers in diameter. It was discovered on 30 December 1937, by French astronomer Marguerite Laugier at Nice Observatory in southern France.
The metallic M-type asteroid orbits the Sun at a distance of 3.0–3.3 AU once every 5 years and 6 months (2,019 days). Its orbit has an eccentricity of 0.05 and an inclination of 15° with respect to the ecliptic. Jean-Jacques was first identified as 1935 OH at Johannesburg Observatory in 1935, extending the body's observation arc by 2 years prior to its official discovery observation.
In March 2005, a rotational light-curve of Jean-Jacques was obtained from photometric observations by Laurent Bernasconi and Horacio Correia. It gave a rotation period of 16.56 hours with a brightness variation of 0.09 in magnitude (U=2).
According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Jean-Jacques measures between 25.33 and 41.43 kilometers in diameter and its surface has an albedo between 0.102 and 0.273. The Collaborative Asteroid Lightcurve Link adopts the results from IRAS, that is an albedo of 0.161 and a diameter of 32.94 kilometers with an absolute magnitude of 10.01.
The minor planet was named after Jean-Jacques Laugier, the son of the discoverer. Naming citation was published before November 1977 (M.P.C. 2116).