161P/Hartley–IRAS
From Wikipedia, the free encyclopedia
Periodic comet with 21 year orbit
| 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]
This was one of six comets discovered by the infrared space telescope IRAS, in 1983.[7] [8]
References
[edit ]- ^ Syuichi Nakano (2005年06月21日). "161P/Hartley-IRAS (NK 1184)". OAA Computing and Minor Planet Sections. Retrieved 2012年02月18日.
- ^ "161P/Hartley-IRAS Orbit". Minor Planet Center . Retrieved 2014年06月18日.
- ^ Seiichi Yoshida (2006年07月16日). "161P/Hartley-IRAS". Seiichi Yoshida's Comet Catalog. Retrieved 2012年02月19日.
- ^ "Horizons Batch for 161P/Hartley-IRAS on 2026-Nov-27" (Perihelion occurs when rdot flips from negative to positive). JPL Horizons . Retrieved 2022年06月22日. (JPL#60 Soln.date: 2021-Apr-15)
- ^ Patrick Rocher (2005年10月12日). "Note number : 0132 P/Hartley-IRAS : 161P". Institut de mécanique céleste et de calcul des éphémérides . Retrieved 2012年02月19日.
- ^ "JPL Small-Body Database Browser: 161P/Hartley-IRAS" (2005年10月12日 last obs). Jet Propulsion Laboratory . Retrieved 2012年07月26日.
- ^ 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.
- ^ Marsden, B. G. (1986). "1986QJRAS..27..102M Page 102". Quarterly Journal of the Royal Astronomical Society. 27: 102. Bibcode:1986QJRAS..27..102M . Retrieved 2019年09月30日.
External links
[edit ]- 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 |
.png){kind=link}
