1329 Eliane, provisional designation1933 FL, is a stonyasteroid and a potentiallyslow rotator from the central region of theasteroid belt, approximately 20 kilometers in diameter. It was discovered on 23 March 1933, by Belgian astronomerEugène Delporte at theUccle Observatory in Belgium.[12] The asteroid was named after the daughter of astronomerPaul Bourgeois.
A rotationallightcurve ofEliane revealed a potentially very longrotation period of106±25 hours with a brightness amplitude of 0.30 inmagnitude (U=2-).[10][a] American astronomerBrian Warner at the Palmer Divide Observatory (716), 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.[b] As of 2017, thepotentially slow rotator has not been further examined.[3]
According to the surveys carried out by the JapaneseAkari satellite and NASA'sWide-field Infrared Survey Explorer with its subsequentNEOWISE mission, the asteroid measures between 19.5 and 22.6 kilometers in diameter and its surface has analbedo in the range of 0.15 to 0.18.[6][4][7] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20, and calculates a diameter of 19.6 kilometers using anabsolute magnitude of 10.90.[3]
^abLightcurve plot of 1329 Eliane, Palmer Divide Observatory, B. D. Warner (2001)
^Note to Warner's Revised rotation period: "Updated results are given for six asteroids previously reported from the Palmer Divide Observatory. The original images were remeasured to obtain new data sets using the latest version of MPO Canopus photometry software, analysis tools, and revised techniques for linking multiple observing runs covering several days to several weeks. Results that were previously not reported or had significantly different periods and/or amplitudes were found for 1329 Eliane, 1582 Martir, 2023 Asaph, 8041 Masumoto, (26853) 1992 UQ2, and (52387) 1993 OM7. This is the second in a series of papers that examines results obtained during the initial years of the asteroid lightcurve program at PDO."Upon Further Review: II. An Examination of Previous Lightcurve Analysis from the Palmer Divide Observatory
