| Discovery[1] | |
|---|---|
| Discovered by | A. Schaumasse |
| Discovery site | Nice Obs. |
| Discovery date | 17 November 1928 |
| Designations | |
| (1114) Lorraine | |
| Pronunciation | /lɒˈreɪn/[2] |
Named after | Lorraine(French region)[3] |
| 1928 WA · 1971 YK A906 UE | |
| main-belt · (outer)[4] background[5] · Eos[6] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 110.62 yr (40,404 days) |
| Aphelion | 3.3181AU |
| Perihelion | 2.8732 AU |
| 3.0956 AU | |
| Eccentricity | 0.0719 |
| 5.45yr (1,989 days) | |
| 138.45° | |
| 0° 10m 51.6s / day | |
| Inclination | 10.744° |
| 195.52° | |
| 203.80° | |
| Physical characteristics | |
| Dimensions | 62.15 km(derived)[4] 62.20±1.7 km[7] 62.35±20.00 km[8] 68.48±0.79 km[9] 70.812±29.31 km[10] 75.631±0.625 km[11] 80.30±26.49 km[12] |
| 32±1h[13] | |
| 0.03±0.02[12] 0.031±0.006[11] 0.0331±0.0331[10] 0.04±0.01[8] 0.043±0.001[9] 0.0457(derived)[4] 0.0501±0.003[7] | |
| SMASS =Xc[1] · X[4] | |
| 9.90[7][9] · 10.00[4][8][11] · 10.06[12] · 10.10[1][10] · 10.25±0.23[14] | |
1114 Lorraine, provisional designation1928 WA, is a very dark backgroundasteroid from the outer regions of theasteroid belt, approximately 70 kilometers in diameter. It was discovered byAlexandre Schaumasse atNice Observatory in 1928, and named for the French region ofLorraine.[3][15]
Lorraine was discovered on 17 November 1928, by French astronomerAlexandre Schaumasse at theNice Observatory in southeastern France.[15] On the following night, it was independently discovered by Italian astronomerLuigi Volta at theObservatory of Turin, Italy.[3] TheMinor Planet Center recognizes only the first discoverer. The asteroid was first observed asA906 UE atHeidelberg Observatory in October 1906.[15]
Lorraine is a non-family asteroid from the main belt'sbackground population (Nesvorny).[5] Conversely, the asteroid is also considered a core member of theEos family (Novakovic, Knezevic and Milani).[6] It orbits the Sun in theouter 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 aneccentricity of 0.07 and aninclination of 11° with respect to theecliptic.[1] The body'sobservation arc begins at Nice Observatory in November 1928, one night after its official discovery observation.[15]
In theSMASS classification,Lorraine is an Xc-subtype, transiting from theX-type to theC-type asteroids.[1]
In January 2005, a rotationallightcurve ofLorraine was obtained from photometric observations by French amateur astronomerLaurent Bernasconi. Analysis of the fragmentary lightcurve gave a longer-than-averagerotation period of 32 hours with a brightness amplitude of 0.16magnitude (U=1).[13] As of 2018, no secure period has been obtained.[4]
According to the surveys carried out by the Infrared Astronomical SatelliteIRAS, the JapaneseAkari satellite and theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Lorraine measures between 62.20 and 80.30 kilometers in diameter and its surface has analbedo between 0.03 and 0.0501.[7][8][9][10][11][12]
TheCollaborative Asteroid Lightcurve Link derives an albedo of 0.0457 and a diameter of 62.15 kilometers based on anabsolute magnitude of 10.0.[4]
Thisminor planet was named after the region ofLorraine, the formerDuchy of Lorraine in north-eastern France, and a remnant of the medieval kingdom ofLotharingia (AN 238;149).[3]
