| Discovery[1] | |
|---|---|
| Discovered by | C. Jackson |
| Discovery site | Johannesburg Obs. |
| Discovery date | 24 May 1931 |
| Designations | |
| (1195) Orangia | |
Named after | Orange Free State Province (in South Africa)[2] |
| 1931 KD · 1948 LB 1972 QA | |
| main-belt · (inner) Flora[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 85.55 yr (31,248 days) |
| Aphelion | 2.7110AU |
| Perihelion | 1.8048 AU |
| 2.2579 AU | |
| Eccentricity | 0.2007 |
| 3.39yr (1,239 days) | |
| 150.46° | |
| 0° 17m 25.8s / day | |
| Inclination | 7.1906° |
| 281.26° | |
| 328.27° | |
| Physical characteristics | |
| Dimensions | 5.90 km(calculated)[3] 6.258±0.604 km[4] |
| 6.167±0.0012h[5] | |
| 0.237±0.053[4] 0.24(assumed)[3] | |
| S[3] | |
| 12.864±0.002(R)[5] · 13.2[1][4] · 13.31[3] · 13.60±0.32[6] | |
1195 Orangia, provisional designation1931 KD, is a stony Florianasteroid from the inner regions of theasteroid belt, approximately 6 kilometers in diameter. It was discovered on 24 May 1931, by South African astronomerCyril Jackson at theUnion Observatory in Johannesburg, South Africa.[7] It was named after theOrange Free State Province.[2]
Orangia is a member of theFlora family, one of the largest families ofstony asteroids. It orbits the Sun in theinner main-belt at a distance of 1.8–2.7 AU once every 3 years and 5 months (1,239 days). Its orbit has aneccentricity of 0.20 and aninclination of 7° with respect to theecliptic.[1] The asteroid'sobservation arc begins at Johannesburg, two weeks after its official discovery observation.[7]
In November 2010, a rotationallightcurve ofOrangia was obtained from photometric observations in the R-band by astronomers at thePalomar Transient Factory in California. Lightcurve analysis gave arotation period of 6.167 hours with a brightness amplitude of 0.20magnitude (U=2).[5]
According to the survey carried out by theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Orangia measures 6.258 kilometers in diameter and its surface has analbedo of 0.237,[4] while theCollaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from8 Flora, the largest member and namesake of the Flora family – and calculates a diameter of 5.90 kilometers using anabsolute magnitude of 13.31.[3]
Thisminor planet was named in honor of former South AfricanOrange Free State Province that existed from 1910 to 1994.[2] The official naming citation was also mentioned inPaul Herget'sThe Names of the Minor Planets in 1955 (H 111).[2]
