| Discovery[1] | |
|---|---|
| Discovered by | D. di Cicco |
| Discovery site | Sudbury Obs. |
| Discovery date | 17 November 1996 |
| Designations | |
| (11132) Horne | |
Named after | Johnny Horne[2] (The Fayetteville Observer) |
| 1996 WU · 1999 JR57 | |
| main-belt · (outer) Hygiea[3] | |
| Orbital characteristics[1] | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 24.61 yr (8,989 days) |
| Aphelion | 3.4970AU |
| Perihelion | 2.7882 AU |
| 3.1426 AU | |
| Eccentricity | 0.1128 |
| 5.57yr (2,035 days) | |
| 194.38° | |
| 0° 10m 36.84s / day | |
| Inclination | 4.2036° |
| 236.87° | |
| 296.97° | |
| Physical characteristics | |
| 12.843±0.302 km[4] | |
| 0.098±0.013[4] | |
| 12.7[1] | |
11132 Horne (provisional designation1996 WU) is aHygieanasteroid from the outer regions of theasteroid belt, approximately 13 kilometers (8 miles) in diameter. It was discovered on 17 November 1996, by American amateur astronomerDennis di Cicco at his Sudbury Observatory (817) in Massachusetts, United States. The asteroid was named for Johnny Horne, photo editor ofThe Fayetteville Observer.[2]
Horne is a member of theHygiea family (601),[3] a very largefamily of carbonaceous outer-belt asteroids, named after thefourth-largest asteroid,10 Hygiea.[5]
It orbits the Sun in theouter asteroid belt at a distance of 2.8–3.5 AU once every 5 years and 7 months (2,035 days;semi-major axis of 3.14 AU). Its orbit has aneccentricity of 0.11 and aninclination of 4° with respect to theecliptic.[1] The body'sobservation arc begins with its first observation atSiding Spring Observatory in April 1993, more than 3 years prior to its official discovery observation.[2]
According to the survey carried out by theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer, Horne measures 12.843 kilometers in diameter and its surface has analbedo of 0.098.[4] As of 2018, no rotationallightcurve of Horne has been obtained fromphotometric observations. The asteroid'srotation period,poles and shape remain unknown.[1]
Thisminor planet was named in honor of Johnny Horne (born 1953), photo editor forThe Fayetteville Observer, a 75,000 circulation daily newspaper in southeastern North Carolina where Horne has worked for three decades. Horne has been anamateur astronomer since age 10. Since 1989, he has written a monthly astronomy column,Backyard Universe, for The Observer. The official naming citation was published by theMinor Planet Center on 7 January 2004 (M.P.C. 50462).[2][6]
Horne is also a contributing editor forSky & Telescope magazine and has served as a study leader for the publication's astronomical expeditions to Mexico, Africa, the Caribbean and Iceland. He photographedHalley's Comet from the Australian Outback in 1986 and his astronomical photographs have appeared in magazines and newspapers worldwide. He regularly reviews amateur astronomy products forSky and Telescope's test reports. During 2002, Horne produced a collection of his astronomical photographs over 25 years. ThatBackyard Universe Gallery collection was displayed at theMorehead Planetarium and Science Center in Chapel Hill, North Carolina, 40 years after a class visit there had triggered Horne's lifelong interest in astronomy.[citation needed]
