Editing 55P/Tempel–Tuttle (section)

{{Short description|Periodic comet}}
{{use dmy dates |date=October 2020}}
{{Infobox comet
| name =55P/Tempel–Tuttle
| image = Drawing of comet 55P by Tempel-from his personal notebooks in the Arcetri.jpg
| caption = Sketch of the comet by Wilhem Tempel, 19 December 1865
| discoverer =[[Wilhelm Tempel]] and [[Horace Parnell Tuttle]]
| discovery_date = 19 December 1865
| mpc_name     = P/1366 U1, P/1699 U1<br>P/1865 Y1, P/1965 M2<br>P/1997 E1
| designations = 1699 II; 1866 I;<br /> 1965 IV; 1965i
| orbit_ref    = {{r|jpldata}}
| epoch = 2031-05-14<br/>([[Julian date|JD]] 2463000.5)
| Earth_moid = {{Convert|0.008|AU|km|abbr=on}}
| semimajor = 10.46 [[Astronomical Unit|AU]]
| perihelion = 0.9644 AU
| aphelion = 19.96 AU
| eccentricity = 0.9078
| period = 33.83 [[Julian year (astronomy)|yr]]
| inclination = 162.57°
| last_p = 28 February 1998<ref name="Kinoshita"/>
| next_p = 20 May 2031<ref name="Yoshida-55p"/><ref name="Horizons2031"/><ref name="Kinoshita"/><ref name=MPC/>
| physical_ref = 
| M1 = 10{{r|jpldata}}
| dimensions   = {{cvt|3.6|km|mi}}{{r|jpldata}}
| rotation     = 14.79 or 15.31 hr{{r|IAUC_6816}}
}}

'''55P/Tempel–Tuttle''' (commonly known as '''Comet Tempel–Tuttle''') is a [[Retrograde and prograde motion|retrograde]] [[List of periodic comets|periodic]] [[comet]] with an [[orbital period]] of 33 years. It fits the classical definition of a Halley-type comet with a [[orbital period|period]] of between 20 and 200 years. It was independently discovered by [[Wilhelm Tempel]] on 19 December 1865, and by [[Horace Parnell Tuttle]] on 6 January 1866. It is the parent body of the [[Leonids|Leonid]] [[meteor shower]].