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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
- ^ 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 Batch for 161P/Hartley-IRAS on 2026-Nov-27" (Perihelion occurs when rdot flips from negative to positive). JPL Horizons. Retrieved 2022-06-22. (JPL#60 Soln.date: 2021-Apr-15)
- ^ 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.
- ^ Marsden, B. G. (1986). "1986QJRAS..27..102M Page 102". Quarterly Journal of the Royal Astronomical Society. 27: 102. Bibcode:1986QJRAS..27..102M. 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
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