| Minorplanet: | yes |
| 8549 Alcide | |
| Background: |
|
| Discovery Ref: |   |
| Discovered: | 30 March 1994 |
| Discoverer: | Farra d'Isonzo Obs. |
| Mpc Name: | (8549) Alcide |
| Alt Names: | 1994 FS |
| Named After: | Alcide Bittesini |
| Mp Category: | main-beltNysa  |
| Orbit Ref: |   |
| Epoch: | 4 September 2017 (JD 2458000.5) |
| Uncertainty: | 0 |
| Observation Arc: | 23.31 yr (8,514 days) |
| Perihelion: | 1.9828 AU |
| Semimajor: | 2.4370 AU |
| Eccentricity: | 0.1864 |
| Period: | 3.80 yr (1,390 days) |
| Mean Motion: | / day |
| Inclination: | 1.8790° |
| Asc Node: | 205.61° |
| Arg Peri: | 64.719° |
| Dimensions: | 4.19 km km |
| Albedo: | 0.21 |
| Spectral Type: | S  |
| Abs Magnitude: | 14.2 |
8549 Alcide, provisional designation, is a stony Nysa asteroid from the inner regions of the asteroid belt, approximately 4.2 kilometers in diameter. It was discovered on 30 March 1994, by a group of amateur astronomers at the Farra d'Isonzo Observatory, Italy, near the border to Slovenia. It was named for Alcide Bittesini, father of co-discoverer Luciano Bittesini.
Alcide is a member of the stony subgroup of the Nysa family, one of the smaller families in the main-belt, named after its namesake, 44 Nysa. The body orbits the Sun in the inner main-belt at a distance of 2.0–2.9 AU once every 3 years and 10 months (1,390 days). Its orbit has an eccentricity of 0.19 and an inclination of 2° with respect to the ecliptic. Precoveries were taken at Palomar and Steward Observatory (Kitt Peak) just weeks and days prior to the asteroid's official discovery observation at Farra d'Isonzo.
A rotational lightcurve of Alcide was obtained from photometric observations made by astronomer David Polishook at the ground-based Wise Observatory, Israel, in November 2007. The lightcurve gave a rotation period of hours with a brightness amplitude of 0.2 magnitude .
According to the survey carried out by the NEOWISE mission of NASA's space-based Wide-field Infrared Survey Explorer, Alcide measures 4.3 kilometers in diameter and its surface has an albedo of 0.195, while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.21 and calculates a diameter of 4.2 kilometers with an absolute magnitude of 14.2.
This minor planet was named for Italian high-school teacher of natural sciences, Alcide Bittesini (1913–1981). He was the father of amateur astronomer Luciano Bittesini, who co-discovered the asteroid with his amateur colleagues at the Farra d'Isonzo Observatory in Italy.
At the age of 9, his father fostered his interest in astronomy, when they observed a comet with a homespun telescope made of a pair of glasses, a tin can and a microscope eyepiece. The official naming citation was published by the Minor Planet Center on 2 February 1999 .