| Discovery[1] | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 17 November 1924 |
| Designations | |
| (1047) Geisha | |
Named after | The Geisha[2] (British musical) |
| 1924 TE · 1932 BP 1941 YG · 1947 NC 1950 JF · 1974 HU2 A916 HB | |
| main-belt · (inner) Flora[3][4] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 92.63 yr (33,833d) |
| Aphelion | 2.6723AU |
| Perihelion | 1.8094 AU |
| 2.2409 AU | |
| Eccentricity | 0.1925 |
| 3.35yr (1,225 days) | |
| 256.96° | |
| 0° 17m 37.68s / day | |
| Inclination | 5.6667° |
| 78.223° | |
| 300.39° | |
| Physical characteristics | |
| Dimensions | 9.96±2.15 km[5] 10.555±0.095 km[6] 10.729±0.112 km[7] 11.52 km(calculated)[3] |
| 25.62±0.02h[8] | |
| 0.24(assumed)[3] 0.277±0.029[7] 0.2897±0.0802[6] 0.30±0.13[5] | |
| Tholen =S[1] · S[3] B–V = 0.913[1] U–B = 0.541[1] | |
| 11.86[1][3][6] · 12.20[5] | |
1047 Geisha, provisional designation1924 TE, is a stony Florianasteroid from the inner regions of theasteroid belt, approximately 11 kilometers in diameter. It was discovered on 17 November 1924, by German astronomerKarl Reinmuth at theHeidelberg-Königstuhl State Observatory in southwest Germany.[9] The asteroid was named after the British musicalThe Geisha.[2]
Geisha is a member of theFlora family (402),[3][4] a giantasteroid family and the largest family of stony asteroids in the main-belt.[10]: 23 It orbits the Sun in theinner main-belt at a distance of 1.8–2.7 AU once every 3 years and 4 months (1,225 days;semi-major axis 2.24 AU). Its orbit has aneccentricity of 0.19 and aninclination of 6° with respect to theecliptic.[1]
The asteroid was first observed asA916 HB at Heidelberg in April 1916. The body'sobservation arc begins with its official discovery observation in November 1924.[9]
In theTholen classification,Geisha is stonyS-type asteroid,[1] which is also the overallspectral type for members of the Flora family.[10]: 23
In February 2006, a rotationallightcurve ofGeisha was obtained from photometric observations by Italian amateur astronomerLaurent Bernasconi. Lightcurve analysis gave a somewhat longer-than-averagerotation period of 25.62 hours with a brightness amplitude of 0.33magnitude (U=3-).[8]
According to the survey carried out by theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Geisha measures between 9.96 and 10.729 kilometers in diameter and its surface has analbedo between 0.277 and 0.30.[5][6][7]
TheCollaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from8 Flora, namesake andparent body of the Flora family – and calculates a diameter of 11.52 kilometers based on anabsolute magnitude of 11.86.[3]
Thisminor planet was named after the British musicalThe Geisha, a story of a tea house (1896). The official naming citation was mentioned inThe Names of the Minor Planets byPaul Herget in 1955 (H 100).[2]
