_Piccolo.png) Modelled shape ofPiccolo from itslightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | E. Delporte |
| Discovery site | Uccle Obs. |
| Discovery date | 29 November 1932 |
| Designations | |
| (1366) Piccolo | |
Named after | Auguste Cauvin[2] (Chief-editorLe Soir) |
| 1932 WA · 1930 FA1 1931 PC · 1931 RJ1 1935 GM · 1935 JM 1950 KL · 1961 TL1 1961 VP · A916 NB | |
| main-belt · (outer)[3] background[4] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 84.51 yr (30,868 days) |
| Aphelion | 3.2803AU |
| Perihelion | 2.4686 AU |
| 2.8745 AU | |
| Eccentricity | 0.1412 |
| 4.87yr (1,780 days) | |
| 245.21° | |
| 0° 12m 7.92s / day | |
| Inclination | 9.4758° |
| 24.147° | |
| 282.70° | |
| Physical characteristics | |
| 26.92±1.03 km[5] 27.50 km(derived)[3] 27.55±1.8 km[6] 28.02±2.68 km[7] 29.9 km[8] | |
| 16.048±0.003h[9] 16.05±0.05 h[9] 16.1834±0.0005 h[10] 16.57 h[11] | |
| 0.131[8] 0.1447(derived)[3] 0.1538±0.022[6] 0.167±0.014[5] 0.199±0.251[7] | |
| X[12] · S[3] B–V = 0.710[1] U–B = 0.180[1] | |
| 10.14[7] · 10.24±0.30[12] · 10.45[1][5][6][8] · 10.52[3][11] | |
1366 Piccolo, provisional designation1932 WA, is anasteroid from thebackground population of the outerasteroid belt, approximately 28 kilometers in diameter. It was discovered on 29 November 1932, by astronomerEugène Delporte at theRoyal Observatory of Belgium in Uccle.[13] The asteroid was named afterAuguste Cauvin, chief-editor of the Belgian newspaperLe Soir.[2]
Piccolo is a non-family asteroid of the main belt'sbackground population.[4] It orbits the Sun in theouter asteroid belt at a distance of 2.5–3.3 AU once every 4 years and 10 months (1,780 days;semi-major axis of 2.87 AU). Its orbit has aneccentricity of 0.14 and aninclination of 9° with respect to theecliptic.[1]
The asteroid was first identified asA916 NB atJohannesburg Observatory in July 1916. The body'sobservation arc begins at Uccle with its official discovery observation.[13]
Thisminor planet was named after the pseudonym of Auguste Cauvin, also known as "d'Arsac", long-time editor-in-chief of the Belgian newspaperLe Soir (c. 1898–1937). The pseudonym "piccolo" means "small" in Italian.[2] The official naming citation was mentioned inThe Names of the Minor Planets byPaul Herget in 1955 (H 124).[2] Asteroid1350 Rosselia was also named after an editor ofLe Soir by Delporte.
Piccolo has been characterized as anX-type asteroid byPan-STARRS photometric survey,[12] while the LCDB assumes a stonyS-type.[3]
In June 1984, a first rotationallightcurve ofPiccolo was obtained from photometric observations by American astronomerRichard Binzel. Lightcurve analysis gave arotation period of 16.57 hours with a brightness variation of 0.33magnitude (U=2).[11] In 2003 and 2005, two more lightcurves were obtained by French amateur astronomerRené Roy. They gave a period of 16.048 and 16.05 hours and an amplitude of 0.24 and 0.29 magnitude, respectively (U=2/2).[9]
In 2016, the asteroid lightcurve has also been modeled using photometric data from various sources. It gave a concurring period of 16.1834 hours and twospin axis inecliptic coordinates of (352.0°, 49.0°) and (201.0°, 55.0°).[10]
According to the surveys carried out by the Infrared Astronomical SatelliteIRAS, the JapaneseAkari satellite and theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Piccolo measures between 26.92 and 28.02 kilometers in diameter and its surface has analbedo between 0.1538 and 0.199.[5][6][7] In April 2003, an albedo of 0.131 and a diameter of 29.9 kilometers have also been deduced from astellar occultation.[8]
TheCollaborative Asteroid Lightcurve Link derives an albedo of 0.1447 and a diameter of 27.50 kilometers based on anabsolute magnitude of 10.52.[3]
