| Discovery[1] | |
|---|---|
| Discovered by | C. Jackson |
| Discovery site | Johannesburg Obs. |
| Discovery date | 30 July 1938 |
| Designations | |
| (1467) Mashona | |
Named after | Shona people (Mashona) (natives ofMashonaland)[2] |
| 1938 OE · 1930 DL 1936 DK · 1936 FA1 1948 EG · A923 CB | |
| main-belt · (outer)[1] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 94.41 yr (34,483 days) |
| Aphelion | 3.8268AU |
| Perihelion | 2.9485 AU |
| 3.3877 AU | |
| Eccentricity | 0.1296 |
| 6.24yr (2,277 days) | |
| 255.30° | |
| 0° 9m 29.16s / day | |
| Inclination | 21.910° |
| 326.50° | |
| 349.55° | |
| Physical characteristics | |
| Dimensions | 89.160±0.728 km[3] 90.93±28.77 km[4] 95.08±1.30 km[5] 104.119±1.062 km[6] 107.54 km(calculated)[7] |
| 9.740±0.0029h[8] 9.744±0.001 h[9] 9.76 h[10] | |
| 0.05±0.03[4] 0.057(assumed)[7] 0.0609±0.0111[6] 0.074±0.002[5] 0.083±0.014[3] | |
| Tholen = GC[1] · GC[7] B–V = 0.743[1] U–B = 0.373[1] | |
| 8.515±0.001(R)[8] 8.57[1][4][5][6][7] | |
1467 Mashona, provisional designation1938 OE, is a rare-type carbonaceousasteroid from the outer regions of theasteroid belt, approximately 100 kilometers in diameter, making it one of the top 200largest asteroids currently known to exist. It was discovered on 30 July 1938, by South African astronomerCyril Jackson at theJohannesburg Observatory in South Africa.[11] It was later named after the nativeShona people of Zimbabwe.[2]
Mashona orbits the Sun in theouter main-belt at a distance of 2.9–3.8 AU once every 6 years and 3 months (2,277 days). Its orbit has aneccentricity of 0.13 and aninclination of 22° with respect to theecliptic.[1] It is a member of theCybele asteroid group.[12]
In February 1923, it was first identified as1923 CB atHeidelberg Observatory in Germany. The body'sobservation arc begins at Johannesburg, 5 days after its official discovery observation.[11]
Mashona was the highest numbered asteroid used in calculating the future orbit of101955 Bennu.[13]
In theTholen classification,Mashona is a rare GC-type, aspectral type that transitions between the commonC and rareG-type asteroids.[1]
Until April 2010, three rotationallightcurves ofMashona have been obtained from photometric observations. Lightcurve analysis gave a well-definedrotation period between 9.74 and 9.76 hours with a brightness amplitude varying from 0.24 to 0.31magnitude (U=3/2/3).[8][9][10]
According to the surveys carried out by the JapaneseAkari satellite and NASA'sWide-field Infrared Survey Explorer with its subsequentNEOWISE mission,Mashona measures between 89.160 and 104.119 kilometers in diameter and its surface has analbedo between 0.05 and 0.083.[3][4][5][6] TheCollaborative Asteroid Lightcurve Link assumes a standard albedo forcarbonaceous asteroids of 0.057 and calculates a diameter of 107.54 kilometers based on anabsolute magnitude of 8.57.[7] Among nearly half a million asteroids,Mashona belongs to the 200 largest bodies.[14]
Thisminor planet was named for theShona people (Mashona), natives ofMashonaland in Zimbabwe, then Rhodesia.[2] The officialnaming citation was published by theMinor Planet Center in April 1953 (M.P.C. 909).[15]
