11P/Tempel–Swift–LINEAR

11P/Tempel–Swift–LINEAR
Discovery
Discovered byErnst Tempel,
Lewis Swift &
LINEAR
Discovery dateNovember 27, 1869
Designations
1869 W1; 1869 III;
1869c; 1880 T1;
1880 IV; 1880e;
1891 V; 1891d;
1908 II; 1908d;
2001 X3
Orbital characteristics
Epoch2023-02-25[1]
Aphelion5.18 AU
Perihelion1.388 AU
Semi-major axis3.284 AU
Eccentricity0.5775
Orbital period5.95 yr
Inclination14.429°
238.87°
Argument of
periapsis		167.99°
Last perihelionNovember 26, 2020[1]
August 26, 2014[2]
May 4, 2008
(unobserved)[1]
Next perihelionNovember 9, 2026[3]

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

In 1869 perihelion (closest approach to the Sun) was 1.063 AU.[4] 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.[5] 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]

The comet will next come to perihelion on 9 November 2026,[3] then two days later on the 11th, make a closest approach to Earth of 0.4012 AU (60.02 million km).[6]

References

  1. ^ a b c d e "11P/Tempel-Swift-LINEAR Orbit". Minor Planet Center. Retrieved 2014-10-28.
  2. ^ a b Seiichi Yoshida (2009-04-07). "11P/Tempel-Swift-LINEAR". Seiichi Yoshida's Comet Catalog. Retrieved 2012-02-19.
  3. ^ a b "Horizons Batch for 11P/Tempel-Swift-LINEAR (90000219) on 2026-Nov-09" (Perihelion occurs when rdot flips from negative to positive). JPL Horizons. Retrieved 2022-06-27. (JPL#K204/11 Soln.date: 2022-May-23)
  4. ^ Kinoshita, Kazuo (2014-12-02). "11P/Tempel-Swift-LINEAR past, present and future orbital elements". Comet Orbit. Archived from the original on 2011-05-20. Retrieved 2023-07-27.
  5. ^ Kronk, Gary W. "11P/Tempel-Swift-LINEAR". Cometography. Retrieved 2014-10-28.
  6. ^ "JPL Small-Body Database Browser: 11P/Tempel-Swift-LINEAR". Jet Propulsion Laboratory. Retrieved 2023-07-12.


Numbered comets
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