| Discovery[1] | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 14 September 1925 |
| Designations | |
| (1049) Gotho | |
Named after | unknown[2] |
| 1925 RB · A906 DD | |
| main-belt · (outer)[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 91.64 yr (33,470 days) |
| Aphelion | 3.5133AU |
| Perihelion | 2.6726 AU |
| 3.0930 AU | |
| Eccentricity | 0.1359 |
| 5.44yr (1,987 days) | |
| 295.00° | |
| 0° 10m 52.32s / day | |
| Inclination | 15.110° |
| 342.86° | |
| 41.244° | |
| Physical characteristics | |
| Dimensions | 51.05 km(derived)[3] 53.56±16.68 km[4] 53.84±19.48 km[5] 54.77±0.76 km[6] 56.296±0.204 km[7] 63.874±0.177 km[8] |
| 8.470±0.007h[9] | |
| 0.0069±0.0005[8] 0.008±0.001[7] 0.03±0.03[4] 0.04±0.06[5] 0.045±0.001[6] 0.0469(derived)[3] | |
| C[3] | |
| 10.30[6] · 10.4[1][3][4] · 10.42[5] · 12.0[8] | |
1049 Gotho, provisional designation1925 RB, is a carbonaceousasteroid from the outer region of theasteroid belt, approximately 53 kilometers in diameter. It was discovered on 14 September 1925, by German astronomerKarl Reinmuth atHeidelberg Observatory in southwest Germany.[10] Although the name of the asteroid is a masculine German name, it is not known to refer to a particular individual.[2]
Gotho orbits the Sun in theouter main-belt at a distance of 2.7–3.5 AU once every 5 years and 5 months (1,987 days). Its orbit has aneccentricity of 0.14 and aninclination of 15° with respect to theecliptic.[1] First identified asA906 DD at Heidelberg in February 1906, the body'sobservation arc begins much later atJohannesburg in 1952, or 27 years after its official discovery observation.[10]
Gotho has been characterized as aC-type asteroid.[3]
In April 2010, a rotationallightcurve ofGotho was obtained by astronomer Kenda Albers at the Oakley Southern Sky Observatory, Australia. Lightcurve analysis gave arotation period of 8.470 hours with a brightness variation of 0.17magnitude (U=3-).[9]
According to the surveys carried out by the JapaneseAkari satellite and NASA'sWide-field Infrared Survey Explorer with its subsequentNEOWISE mission,Gotho measures between 53.56 and 56.296 kilometers in diameter and its surface has analbedo between 0.008 and 0.045 (without preliminary results).[4][5][6][7] TheCollaborative Asteroid Lightcurve Link derives an albedo of 0.0469 and a diameter of 51.05 kilometers using anabsolute magnitude of 10.4.[3]
For thisminor planet, any reference of its name to a person or occurrence is unknown.[2]
Among the many thousands ofnamed minor planets,Gotho is one of 120 asteroids, for which no official naming citation has been published. All of these low-numbered asteroids have numbers between164 Eva and1514 Ricouxa and were discovered between 1876 and the 1930s, predominantly by astronomersAuguste Charlois,Johann Palisa,Max Wolf andKarl Reinmuth.[11]
