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161P/Hartley–IRAS
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).
| Discovery |
|---|
| Malcolm HartleyIRAS |
| November 4, 1983 |
| 1983v, 1984 III; 2004 V2 |
| March 6, 2006 |
| 14.19 AU |
| 1.275 AU |
| 7.734 AU |
| 0.8351 |
| 21.51 yr |
| 95.6899° |
| June 20, 2005 |
| 2026 Oct. 292026 Nov. 27 |
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.
By August 2026, the comet should be around apparent magnitude 14. The closest approach to Earth will be on 2 October 2026 at a distance of 0.505 AU (75.5 million km). At perihelion on 27 November 2026 the solar elongation will be 61 degrees at a magnitude of approximately 11.
- 161P/Hartley–IRAS at the JPL Small-Body Database
- 161P/Hartley-IRAS – Seiichi Yoshida @ aerith.net
- 161P at Kronk's Cometography
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