35P/Herschel–Rigollet
Periodic comet with 155 year orbit / From Wikipedia, the free encyclopedia
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35P/Herschel–Rigollet is a periodic comet with an orbital period of 155 years and an orbital inclination of 64 degrees. It fits the classical definition of a Halley-type comet with (20 years < period < 200 years).[1] It was discovered by Caroline Herschel (Slough, United Kingdom) on 21 December 1788. Given that the comet has a 155-year orbit[1] involving asymmetric outgassing, and astrometric observations in 1939 were not as precise as modern observations, predictions for the next perihelion passage in 2092 vary by about a month.
Quick Facts Discovery, Discovered by ...
Discovery | |
---|---|
Discovered by | Caroline Herschel & Roger Rigollet |
Discovery date | 1788-12-21 & 1939-07-28 |
Designations | |
35P/1788 Y1, 1788II Herschel; 1939 O1, 1939 IX | |
Orbital characteristics | |
Epoch | 1939-08-05 |
Aphelion | 56.9 AU[1] |
Perihelion | 0.74 AU |
Semi-major axis | 28.843 AU |
Eccentricity | 0.974 |
Orbital period | 155 yr[1] |
Inclination | 64.207° |
Last perihelion | 1939-08-09[1] |
Next perihelion | 2092-Feb-13 (MPC)[2] 2092-Feb-17 (JPL)[3] 2092 Mar. 16[4] |
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