C/1899 E1 (Swift)
              < C 
 
            
          | A series of photographs of Comet Swift taken by Edwin F. Coddington on 8–10 May 1899 | |
| Discovery | |
|---|---|
| Discovered by | Lewis A. Swift | 
| Discovery site | Mount Lowe Obs. | 
| Discovery date | 4 March 1899 | 
| Designations | |
| 1899a 1899 I | |
| Orbital characteristics | |
| Epoch | 4 May 1899 (JD 2414778.5) | 
| Observation arc | 126 days | 
| Number of observations | 151 | 
| Perihelion | 0.327 AU | 
| Eccentricity | 1.00033 | 
| Inclination | 146.27° | 
| 26.41° | |
| Argument of periapsis | 8.706° | 
| Last perihelion | 13 April 1899 | 
| Earth MOID | 0.506 AU | 
| Jupiter MOID | 0.917 AU | 
Comet Swift, also known as C/1899 E1 from its modern nomenclature, is a hyperbolic comet that became visible to the naked eye in early 1899. It is one of 13 comets discovered by American astronomer, Lewis A. Swift.