C/1883 D1 (Brooks–Swift)
              < C 
 
            
          | Discovery | |
|---|---|
| Discovered by | William R. Brooks Lewis A. Swift | 
| Discovery site | New York, USA | 
| Discovery date | 24 February 1883 | 
| Designations | |
| 1883a 1883 I | |
| Orbital characteristics | |
| Epoch | 12 March 1883 (JD 2408881.5) | 
| Observation arc | 31 days | 
| Number of observations | 9 | 
| Perihelion | 0.760 AU | 
| Eccentricity | 1.000077 | 
| Inclination | 78.066° | 
| 279.77° | |
| Argument of periapsis | 110.89° | 
| Last perihelion | 19 February 1883 | 
| Earth MOID | 0.110 AU | 
| Jupiter MOID | 1.824 AU | 
| Physical characteristics | |
| 6.0–7.0 (1883 apparition) | |
Comet Brooks–Swift, also known as C/1883 D1 by its modern nomenclature, is a hyperbolic comet that was visible telescopically to Earth in the early months of 1883. It was discovered independently by two American astronomers, William Robert Brooks and Lewis A. Swift.