| Discovery[1] | |
|---|---|
| Discovered by | E. F. Helin |
| Discovery site | Palomar Obs. |
| Discovery date | 12 July 1988 |
| Designations | |
| (6296) Cleveland | |
Named after | Cleveland[1] (U.S. city in Ohio) |
| 1988 NC · 1982 BL12 1993 MU | |
| main-belt · (inner) Hungaria[1][2] · background[3][4] | |
| Orbital characteristics[5] | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 36.10yr (13,184 d) |
| Aphelion | 2.0081AU |
| Perihelion | 1.7741 AU |
| 1.8911 AU | |
| Eccentricity | 0.0619 |
| 2.60 yr (950 d) | |
| 291.58° | |
| 0° 22m 44.4s / day | |
| Inclination | 27.052° |
| 111.50° | |
| 36.759° | |
| Physical characteristics | |
| 3.179±0.167 km[6] 3.18±0.17 km[6] 3.74±0.82 km[7] | |
| 15.38±0.02 h(half period)[8] 15.65±0.04 h(half period)[9] 30.84±0.03 h[10][a] | |
| 0.28±0.11[7] 0.481±0.069[6] | |
| E(assumed)[2] | |
| 13.90[2][6] 14.00±0.59[11] 14.20[7] 14.4[1][5] | |
6296 Cleveland, provisional designation1988 NC, is aHungaria asteroid from the innermost regions of theasteroid belt, approximately 3.5 kilometers (2.2 miles) in diameter. It was discovered on 12 July 1988, by American astronomerEleanor Helin at thePalomar Observatory in California.[1] The presumedE-type asteroid has a longrotation period of 30.8 hours and possibly an elongated shape.[2] It was named for the city ofCleveland in the U.S. state of Ohio.[1]
Cleveland is aHungaria asteroid, a dynamical group that forms the innermost dense concentration of asteroids in theSolar System.[2] However it is abackground asteroid and does not belong to theHungaria family.[3][4] It orbits the Sun in theinner main-belt at a distance of 1.8–2.0 AU once every 2 years and 7 months (950 days;semi-major axis of 1.89 AU). Its orbit has aneccentricity of 0.06 and aninclination of 27° with respect to theecliptic.[5] The body'sobservation arc begins with its first observation as1982 BL12 atCrimea–Nauchnij in January 1982, more than six years prior to its official discovery observation at Palomar .[1]
Cleveland is an assumedE-type asteroid.[2]
In April 2011, a rotationallightcurve ofCleveland was obtained fromphotometric observations by American astronomerBrian Warner at hisPalmer Divide Observatory in Colorado. Lightcurve analysis gave arotation period of 30.84 hours with a brightness amplitude of 0.70magnitude, indicative of a non-spherical shape (U=3).[2][10][a] While not being aslow rotator,Cleveland's period is significantly longer than for most other asteroids, which typically have periods between 2 and 20 hours. The result supersedes previous measurements that gave 15.38 and 15.65 hours, or half the period solution of the 2011 measurement (U=2/2).[8][9]
According to the survey carried out by theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Cleveland measures between 3.179 and 3.74 kilometers in diameter and its surface has analbedo between 0.28 and 0.481.[6][7]
TheCollaborative Asteroid Lightcurve Link adopts an albedo of 0.481 and a diameter of 3.18 kilometers based on anabsolute magnitude of 13.9.[2]
Thisminor planet was named after the U.S. city ofCleveland as a tribute to its bicentennial celebration.[1] The official naming citation was published by theMinor Planet Center on 9 September 1995 (M.P.C. 25655).[12]
