C/1963 A1 (Ikeya)
Comet Ikeya next to α Piscium on 14 March 1963 | |
| Discovery | |
|---|---|
| Discovered by | Kaoru Ikeya |
| Discovery site | Maisaka, Japan |
| Discovery date | 2 January 1963 |
| Designations | |
| 1963 I, 1963a | |
| Orbital characteristics | |
| Epoch | 26 April 1963 (JD 2438145.5) |
| Observation arc | 278 days |
| Number of observations | 33 |
| Aphelion | 190.5 AU |
| Perihelion | 0.632 AU |
| Semi-major axis | 95.55 AU |
| Eccentricity | 0.99338 |
| Orbital period | ~934 years |
| Inclination | 160.64° |
| 53.22° | |
| Argument of periapsis | 336.30° |
| Last perihelion | 21 March 1963 |
| Next perihelion | ~2890s |
| TJupiter | –0.874 |
| Earth MOID | 0.2364 AU |
| Jupiter MOID | 0.5942 AU |
| Physical characteristics | |
| Comet nuclear magnitude (M2) | 15.0 |
| 2.8 (1963 apparition) | |
C/1963 A1 (Ikeya) is a long period comet discovered by Kaoru Ikeya on 2 January 1963. The comet last passed perihelion on 21 March 1963, when it reached an apparent magnitude of 2.8.