161P/Hartley–IRAS
| 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[1] 2026 Nov. 27[2][3][4] 2026 December 18[5] |
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).[6]
References
- ^ Syuichi Nakano (2005-06-21). "161P/Hartley-IRAS (NK 1184)". OAA Computing and Minor Planet Sections. Retrieved 2012-02-18.
- ^ "161P/Hartley-IRAS Orbit". Minor Planet Center. Retrieved 2014-06-18.
- ^ Seiichi Yoshida (2006-07-16). "161P/Hartley-IRAS". Seiichi Yoshida's Comet Catalog. Retrieved 2012-02-19.
- ^ Horizons output. "Observer Table for Comet 161P/Hartley-IRAS". Retrieved 2011-06-13. (Observer Location:@sun)
- ^ Patrick Rocher (2005-10-12). "Note number : 0132 P/Hartley-IRAS : 161P". Institut de mécanique céleste et de calcul des éphémérides. Retrieved 2012-02-19.
- ^ "JPL Small-Body Database Browser: 161P/Hartley-IRAS" (2005-10-12 last obs). Jet Propulsion Laboratory. Retrieved 2012-07-26.
External links
- Orbital simulation from JPL (Java) / Horizons Ephemeris
- 161P/Hartley-IRAS – Seiichi Yoshida @ aerith.net
- 161P at Kronk's Cometography
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