Not to be confused with another long-period comet with the same name: C/1960 M1 (Humason).

Comet Humason, formally designated C/1961 R1 (a.k.a. 1962 VIII and 1961e), was a non-periodic comet discovered by Milton L. Humason on 1 September 1961. Its perihelion was well beyond the orbit of Mars, at 2.133 AU. The outbound orbital period is about 2,516 years.

Physical properties

It was a "giant" comet, much more active than a normal comet for its distance to the Sun, with an absolute magnitude of 1.35−3.5,[3] and a nucleus diameter estimated at 30–40 km (19–25 mi).[2] It could have been up to a hundred times brighter than an average new comet. It had an unusually disrupted or "turbulent" appearance.[4] It was also unusual in that the spectrum of its tail showed a strong predominance of the ion CO+, a result previously seen unambiguously only in C/1908 R1 (Morehouse).[5]

See also

References

  1. ^ "C/1961 R1 – JPL Small-Body Database Lookup". ssd.jpl.nasa.gov. Jet Propulsion Laboratory. Retrieved 29 May 2019.
  2. ^ a b "Comets: Comet Humason 1961e". Irish Astronomical Journal. 6: 191. 1964. Bibcode:1964IrAJ....6Q.191.
  3. ^ a b M. R. Kidger (3 April 1997). "Comet Hale–Bopp Light Curve". jpl.nasa.gov. NASA / JPL. Archived from the original on 7 April 2023. Retrieved 10 January 2025.
  4. ^ J. C. Brandt; R. D. Chapman (2004). Introduction to Comets. Cambridge University Press. p. 156. ISBN 978-0-521-00466-4.
  5. ^ W. F. Huebner (1990). Physics and Chemistry of Comets. Springer-Verlag. p. 246. ISBN 978-0-387-51228-0. ISSN 0941-7834.
Allikas: https://en.wikipedia.org/wiki/Comet_Humason
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