_Devota.png) Modelled shape ofDevota from itslightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | B. Jekhovsky |
| Discovery site | Algiers Obs. |
| Discovery date | 21 October 1925 |
| Designations | |
| (1328) Devota | |
Named after | Fortunato Devoto[2] (Argentine astronomer) |
| 1925 UA · 1938 UC 1951 TQ · 1951 TT 1964 UD | |
| main-belt · (outer)[1][3] background[4] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 92.02 yr (33,612 days) |
| Aphelion | 3.9778AU |
| Perihelion | 3.0334 AU |
| 3.5056 AU | |
| Eccentricity | 0.1347 |
| 6.56yr (2,397 days) | |
| 13.874° | |
| 0° 9m 0.72s / day | |
| Inclination | 5.7658° |
| 222.69° | |
| 174.63° | |
| Physical characteristics | |
| Dimensions | 53.697±0.481 km[5] 55.288±0.434 km[6] 56.06±0.91 km[7] 57.11±5.1 km[3][8] |
| 17.49±0.01h[9] | |
| 0.0407±0.008[3][8] 0.043±0.002[7] 0.0434±0.0064[6] 0.046±0.005[5] | |
| Tholen =X[1][3] P[6] · D[10][11] B–V = 0.695[1] U–B = 0.210[1] | |
| 10.09±0.25[10] · 10.31[1][3][6][7] | |
1328 Devota, provisional designation1925 UA, is a dark backgroundasteroid from the outermost regions of theasteroid belt, approximately 56 kilometers in diameter. It was discovered on 21 October 1925, by Russian–French astronomerBenjamin Jekhowsky at theAlgiers Observatory in North Africa.[12] The asteroid was named after Argentine astronomerFortunato Devoto.[2]
Devota is a non-family asteroid from the main belt'sbackground population.[4] It orbits the Sun in theoutermost asteroid belt at a distance of 3.0–4.0 AU once every 6 years and 7 months (2,397 days;semi-major axis of 3.51 AU). Its orbit has aneccentricity of 0.13 and aninclination of 6° with respect to theecliptic.[1] The body'sobservation arc begins at Algiers, three nights after its official discovery observation.[12]
In theTholen classification,Devota is anX-type asteroid,[1][3] while theWide-field Infrared Survey Explorer (WISE) characterized it as a primitiveP-type.[6] Other spectroscopic and photometric surveys as well as the Bus–DeMeo taxonomy classified the asteroid as aD-type due to its low albedo value and its featureless and reddish spectrum.[10][11]: 22
In August 2009, a rotationallightcurve ofDevota was obtained from photometric observations by French amateur astronomerPierre Antonini. Lightcurve analysis gave arotation period of 17.49 hours with a brightness amplitude of 0.20magnitude (U=2-). The observer also notes that there are several other possible period solutions ("plusieurs solutions entre 0.6 et 1 jour").[9] As of 2017, no secure period has been obtained.[3]
According to the surveys carried out by the JapaneseAkari satellite and theNEOWISE mission of NASA's WISE telescope,Devota measures between 53.697 and 56.06 kilometers in diameter and its surface has analbedo between 0.043 and 0.046.[5][6][7][8]
TheCollaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.0407 and a diameter of 57.11 kilometers based on anabsolute magnitude of 10.31.[3][8]
Thisminor planet was named by the discoverer after his friend, the Argentine astronomerFortunato Devoto, who was the discoverer of theLa Plata Observatory and president of the National Council of Observatories of Argentina. The official naming citation was mentioned inThe Names of the Minor Planets byPaul Herget in 1955 (H 121).[2]
