11P/Tempel–Swift–LINEAR

11P/Tempel–Swift–LINEAR is a periodic Jupiter-family comet in the Solar System.

11P/Tempel–Swift–LINEAR
Discovery
Discovered byErnst Tempel,
Lewis Swift &
LINEAR
Discovery dateNovember 27, 1869
Alternative
designations		1869 W1; 1869 III;
1869c; 1880 T1;
1880 IV; 1880e;
1891 V; 1891d;
1908 II; 1908d;
2001 X3
Orbital characteristics A
EpochJanuary 6, 2002 (JD 2452280.5)
Aphelion5.29 AU
Perihelion1.584 AU
Semi-major axis3.437 AU
Eccentricity0.54
Orbital period6.372 a
Inclination13.46°
Last perihelionNovember 26, 2020[1]
August 26, 2014[2]
May 4, 2008
(unobserved)[1]
Next perihelionNovember 9, 2026[3]

Ernst Wilhelm Leberecht Tempel (Marseille) originally discovered the comet on November 27, 1869, it was later observed by Lewis Swift (Warner Observatory) on October 11, 1880, and realised to be the same comet.

After 1908 the comet became an unobservable lost comet, but on December 7, 2001, an object was found by the Lincoln Near-Earth Asteroid Research (LINEAR) program, and confirmed by previous images from September 10 and October 17 as being the same comet.[4] The comet was not observed during the 2008 unfavorable apparition[2][1] because the perihelion passage occurred when the comet was on the far side of the Sun. The comet was observed during the 2014 and 2020 apparitions.[1]

References
  1. "11P/Tempel-Swift-LINEAR Orbit". Minor Planet Center. Retrieved 2014-10-28.
  2. Seiichi Yoshida (2009-04-07). "11P/Tempel-Swift-LINEAR". Seiichi Yoshida's Comet Catalog. Retrieved 2012-02-19.
  3. JPL Horizons Observer Location: @sun (Perihelion occurs when deldot changes from negative to positive.)
  4. Kronk, Gary W. "11P/Tempel-Swift-LINEAR". Cometography. Retrieved 2014-10-28.
Numbered comets
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10P/Tempel		 11P/Tempel–Swift–LINEAR Next
12P/Pons–Brooks


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