C/1881 K1

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C/1881 K1
Trouvelot - The great comet of 1881 - edit 1.jpg
The great comet of 1881, chromolithograph by Trouvelot
Discovery
Discovered by John Tebbutt
Discovery date22 May 1881
Designations
C/1881 K1, 1881 III, 1881b, Great Comet of 1881, Comet Tebbutt
Orbital characteristics
Epoch 2408248.4388
1881-Jun-16.9388 [1]
Aphelion ~359 AU [1]
Perihelion 0.73455 AU [1]
Semi-major axis ~180 AU [1]
Eccentricity 0.9959 [1]
Orbital period ~2414 a [1]
Inclination 63.4256° [1]

C/1881 K1 (also called the Great Comet of 1881, Comet Tebbutt, 1881 III, 1881b) is a long-period comet discovered by Australian amateur astronomer John Tebbutt on 22 May 1881 [2] at Windsor, New South Wales. It is called a great comet because of its brightness at its last apparition. [3]

Contents

Observations

On 1 June, Tebbutt found the length of the tail to be 8° 38′. The comet was observed in the southern hemisphere from its discovery to 11 June; it then became visible in the night sky of the northern hemisphere by June 22 as a spectacular object to the naked eye. [4] On June 25 the tail's length was about 25° and the brightness of the nucleus was magnitude 1. [5] [6] [7] The comet was still visible to the naked eye in August but by the end of the month the tail was not discernible. [5] In the Alps, at an altitude of between 1,000 and 2,000 meters, Camille Flammarion observed the comet until the beginning of September. [8] The last successful telescope observation of the comet was on 15 February 1882. [5]

For Tebbutt's Comet of 1881, Henry Draper took the first wide-angle photograph of a comet's tail and the first spectrum of a comet's head. [9] Andrew Common used his Newtonian reflecting telescope with 36-inch mirror to photograph the comet.

Tebbutt’s account

The great comet of 1881, image published in Die Gartenlaube Die Gartenlaube (1881) b 501 1.jpg
The great comet of 1881, image published in Die Gartenlaube

In his Astronomical Memoirs in the section entitled 1881, John Tebbutt gave an account of his discovery: [10]

This year, like 1861, was signalised by the discovery of a great comet. While scanning the western sky with the unassisted eye on the evening of May 22, I discovered just below the constellation Columba a hazy looking object which, from my familiarity with that part of the heavens, I regarded as new. On examining it with the small marine telescope previously referred to in these memoirs, I found it to consist really of three objects, namely, two stars of the 41⁄2 and 51⁄2 magnitude afterwards identified as γ1 and y2 Cæli, and a head of a comet. I could not find any trace of a tail, but on the 25th it exhibited a tail about two degrees in length. Immediately on its discovery I obtained, with the 41⁄2 equatorial, eight good measures of the nucleus from one of the bright stars just mentioned. On the following day I notified the discovery to the Government Observatories at Sydney and Melbourne. A series of filar micrometer comparisons was obtained at Windsor, extending from the date of discovery to June 11, when the comet disappeared from our morning sky and became an object for the northern observatories. ...

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References

  1. 1 2 3 4 5 6 7 Orbital data for C/1881 K1, JPL Small-Body Database Browser
  2. ↑ "THE GREAT COMET OF 1881". The South Australian Advertiser ( Adelaide, South Australia). 8 June 1881. letter from C. Todd
  3. ↑ Les Grandes comètes du passé
  4. ↑ "The Great Comet of 1881". Scientific American. 45 (3): 32. 16 July 1881. doi:10.1038/scientificamerican07161881-32a. By June 20th the first sightings in the norther hemisphere were reported.
  5. 1 2 3 Orchiston, W. (January 1999). "C/1881 K1: A Forgotten "Great Comet" of the Nineteenth Century". Irish Astronomical Journal. 26 (1): 33–44. Bibcode:1999IrAJ...26...33O.
  6. ↑ Moore, P.; Rees, R. (2011). "Table 14.8 Selected list of brilliant comets, 1500–1900". Patrick Moore's Data Book of Astronomy. Cambridge: Cambridge University Press. p. 270. ISBN   978-0-521-89935-2.
  7. ↑ Observation détaillée de la comète, Annales de l'Observatoire Royal de Belgique
  8. ↑ Camille Flammarion, "Les Étoiles et les curiosités du ciel", 1882, Observations intéressantes - Les comètes, page 669
  9. ↑ Henry Draper Biography
  10. ↑ Tebbutt, John (1908). "1881". Astronomical Memoirs. Sydney. pp. 48–49.{{cite book}}: CS1 maint: location missing publisher (link)
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