1114 Lorraine, provisional designation 1928 WA, is a very dark background asteroid from the outer regions of the asteroid belt, approximately 70 kilometers in diameter. It was discovered by Alexandre Schaumasse at Nice Observatory in 1928, and named for the French region of Lorraine.[3][15]
Lorraine is a non-family asteroid from the main belt's background population (Nesvorny).[5] Conversely, the asteroid is also considered a core member of the Eos family (Novakovic, Knezevic and Milani).[6] It orbits the Sun in the outer asteroid belt at a distance of 2.9–3.3 AU once every 5 years and 5 months (1,989 days; semi-major axis of 3.10 AU). Its orbit has an eccentricity of 0.07 and an inclination of 11° with respect to the ecliptic.[1] The body's observation arc begins at Nice Observatory in November 1928, one night after its official discovery observation.[15]
In January 2005, a rotational lightcurve of Lorraine was obtained from photometric observations by French amateur astronomer Laurent Bernasconi. Analysis of the fragmentary lightcurve gave a longer-than-average rotation period of 32 hours with a brightness amplitude of 0.16 magnitude (U=1).[13] As of 2018, no secure period has been obtained.[4]
^ abcdMasiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. S2CID46350317.