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Revision as of 20:56, 30 December 2024

Parabolic comet
C/1739 K1 (Zanotti)
Discovery
Discovered byEustachio Zanotti
Discovery siteBologna, Italy
Discovery date28 May 1739
Orbital characteristics
Epoch17 June 1739 (JD 2356384.416)
Observation arc82 days
Perihelion0.674 AU
Eccentricity~1.000
Inclination121.260°
Longitude of
ascending node		211.044°
Argument of
periapsis		104.752°
Last perihelion17 June 1739

C/1739 K1 is a parabolic comet that was discovered by Italian astronomer Eustachio Zanotti in 1739. It is the parent body of the Leo Minorids meteor shower.

Zanotti spotted the comet in the constellation of Lynx on 27 May. He descripted as a magnitude 3 star surrounded by nebulosity while as seen from a telescope a tail 2 degrees long was spotted. Zanotti followed the comet with naked eye until 17 August, when it was only visible via a telescope. He last spotted the comet the next day. The comet was also observed by James Bradley from 30 May to 10 June and Fuhrmann from June 8 to June 19.

The parabolic orbit calculated by Nicolas-Louis de Lacaille indicates it passed perihelion on 17.9 June. The comet had passed at a distance of 0.45 AU on 16 April 1739. The comet has a minimum orbital intersection distance with Earth of 0.049 AU and has been associated with the Leo Minorids meteor shower.

References

  1. ^ E. Zanotti (1739). "XV. The parabolic orbit for the comet of 1739. Observed by Signor Eustachio Zanotti at Bologna". Philosophical Transactions of the Royal Society of London. 41 (452): 809. doi:10.1098/rstl.1739.0145. ISSN 0261-0523. JSTOR 104378. S2CID 186214215.
  2. "C/1739 K1 – JPL Small-Body Database Lookup". ssd.jpl.nasa.gov. Jet Propulsion Laboratory. Retrieved 20 November 2023.
  3. P. Jenniskens; D. S. Lauretta; M. C. Towner; S. Heathcote; E. Jehin; et al. (2021). "Meteor showers from known long-period comets". Icarus. 365 (114469). doi:10.1016/j.icarus.2021.114469. ISSN 0019-1035.
  4. ^ Kronk, Gary W.; Meyer, Maik; Seargent, David A. J. (1999). Cometography: a catalog of comets. Cambridge ; New York: Cambridge University Press. pp. 42–43. ISBN 9780521585040.
  5. Jenniskens, Petrus M. M. (2006). Meteor showers and their parent comets. Cambridge: Cambridge University Press. p. 82. ISBN 9781316257104.

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