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).[6]
| Discovery | |
|---|---|
| Discovered by | Malcolm Hartley IRAS |
| Discovery date | November 4, 1983 |
| Alternative designations | 1984 III; 2004 V2 |
| Orbital characteristics A | |
| 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] |
This was one of six comets discovered by the infrared space telescope IRAS, in 1983.[7][8]
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.
- Schmadel, Lutz D. (2007). "(3728) IRAS". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 315. doi:10.1007/978-3-540-29925-7_3725. ISBN 978-3-540-00238-3.
- "1986QJRAS..27..102M Page 102". adsabs.harvard.edu. Retrieved 2019-09-30.
External links
- Orbital simulation from JPL (Java) / Horizons Ephemeris
- 161P/Hartley-IRAS – Seiichi Yoshida @ aerith.net
- 161P at Kronk's Cometography
| Numbered comets | ||
|---|---|---|
| Previous 160P/LINEAR |
161P/Hartley–IRAS | Next 162P/Siding Spring |
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