C/1861 G1 (Thatcher)

Today, C/1861 G1 (Thatcher) is a topic that has captured the attention of people of all ages and from different parts of the world. The importance of C/1861 G1 (Thatcher) in today's society has generated extensive debate and led to increased interest in understanding its implications in our daily lives. From its origins to its impact on the present, C/1861 G1 (Thatcher) has been the subject of numerous investigations, discussions and analyzes that seek to shed light on its multiple dimensions. In this article, we will explore in depth the different aspects of C/1861 G1 (Thatcher) and its influence on our environment, with the aim of providing a comprehensive and updated vision of this very relevant topic.

C/1861 G1 (Thatcher)
Discovery
Discovered byA. E. Thatcher
Discovery dateApril 5, 1861
Designations
1861 I
Orbital characteristics
Observation arc149 days
Number of
observations		187
Orbit typeLong period comet
Aphelion112 AU
(beyond Eris)
Perihelion0.921 AU (1861)
0.917 AU (2283)
Semi-major axis56.3 AU
Eccentricity0.983
Orbital period422 yr (barycentric)
Inclination79.77°
Last perihelion1861-Jun-03
Next perihelion2283 ±5

Comet C/1861 G1 (Thatcher) is a long-period comet with roughly a 422-year orbit that is expected to return around 2283. It was discovered by A. E. Thatcher. It is responsible for the April Lyrid meteor shower. Carl Wilhelm Baeker also independently found this comet. The comet passed about 0.335 AU (50.1 million km; 31.1 million mi) from the Earth on 5 May 1861 and last came to perihelion (closest approach to the Sun) on 3 June 1861.

C/1861 G1 is listed as a long-period "non-periodic comet" because it has not yet been observed at two perihelion passages. When it is seen to come back around 2283, it should receive the P/ designation.

The comet is the parent body of the April Lyrids meteor shower.

See also

References

  1. ^ a b Horizons output. "Barycentric Osculating Orbital Elements for Thatcher (C/1861 G1) at epoch 1900". Retrieved 2023-08-26. (Solution using the Solar System's barycenter (Sun+Jupiter). Select Ephemeris Type:Elements and Center:@0)
    (PR= 1.54E+05 / 365.25 = 422 years)
  2. ^ a b c Horizons output. "2283 Perihelion for Comet C/1861 G1 (Thatcher)". Retrieved 2020-08-07. (Observer Location:@sun Perihelion occurs when deldot flips from negative to positive)
  3. ^ a b "JPL Small-Body Database Browser: C/1861 G1 (Thatcher)". Jet Propulsion Laboratory. Retrieved 2012-04-21.
  4. ^ Arter, T. R.; Williams, I. P. (1997). "The mean orbit of the April Lyrids". Monthly Notices of the Royal Astronomical Society. 289 (3): 721–728. Bibcode:1997MNRAS.289..721A. doi:10.1093/mnras/289.3.721.

External links

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