161P/Hartley–IRAS
< 161P
| Discovery | |
|---|---|
| Discovered by | Malcolm Hartley IRAS |
| Discovery date | November 4, 1983 |
| Designations | |
| 1984 III; 2004 V2 | |
| Orbital characteristics | |
| Epoch | March 6, 2006 |
| Aphelion | 14.19 AU |
| Perihelion | 1.275 AU |
| Semi-major axis | 7.734 AU |
| Eccentricity | 0.8351 |
| Orbital period | 21.51 yr |
| Inclination | 95.6899° |
| Last perihelion | June 20, 2005 |
| Next perihelion | 2026 Oct. 29 2026 Nov. 27 2026 December 18 |
161P/Hartley–IRAS is a periodic comet with an orbital period of 21 years. It fits the classical definition of a Halley-type comet with (20 years < period < 200 years).
This was one of six comets discovered by the infrared space telescope IRAS, in 1983.