Discovered by E. Delporte MPC designation 1329 Eliane Discovered 23 March 1933 Spectral type S-type asteroid Asteroid group Asteroid belt | Discovery date 23 March 1933 Minor planet category main-belt · (middle) Orbits Sun Discoverer Eugène Joseph Delporte | |
Named after Éliane Bourgeois
(Paul Bourgeois' daughter) Alternative names 1933 FL · 1955 MP
1975 FT Discovery site Royal Observatory of Belgium Similar 1221 Amor, 2101 Adonis, Sun | ||
1329 Eliane, provisional designation 1933 FL, is a stony asteroid and a potentially slow rotator from the middle region of the asteroid belt, approximately 20 kilometers in diameter. It was discovered on 23 March 1933, by Belgian astronomer Eugène Delporte at Uccle Observatory in Belgium.
The S-type asteroid orbits the Sun at a distance of 2.2–3.1 AU once every 4 years and 3 months (1,546 days). Its orbit has an eccentricity of 0.17 and an inclination of 14° with respect to the ecliptic.
A rotational lightcurve of Eliane revealed a potentially very long rotation period of 7002106000000000000♠106±25 hours with a brightness amplitude of 0.30 in magnitude (U=2-). American astronomer Brian Warner at the Palmer Divide Observatory, Colorado, originally took the photometric observations in April 2001. The body's long period was only discovered after the data had been reevaluated in 2010. As of 2017, the potentially slow rotator has not been further examined.
According to the surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the asteroid measures between 19.5 and 22.6 kilometers in diameter and its surface has an albedo in the range of 0.15 to 0.18. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20, and calculates a diameter of 19.6 kilometers using an absolute magnitude of 10.90.
This minor planet was named after Éliane Bourgeois, daughter of astronomer Paul Bourgeois, who was a professor at the discovering Royal Observatory in Uccle, Belgium, and after whom the asteroid 1543 Bourgeois is named. Naming citation was published before 1977 (H 121, no M.P.C. available).