|Discovered by||John Francis Skjellerup, Edmundo Maristany|
|Discovery date||December 6, 1927|
|Great Comet of 1927, 1927 IX, 1927 X1|
|Orbital characteristics A|
|Semi-major axis||1101 AU|
|Orbital period||~36600 yr|
|Last perihelion||December 18, 1927|
Comet Skjellerup–Maristany, formally designated C/1927 X1, 1927 IX, and 1927k, was a long-period comet which became very bright in 1927. This great comet was observable to the naked eye for about 32 days. It was independently discovered by amateur astronomers John Francis Skjellerup in Australia on November 28, 1927 and Edmundo Maristany in Argentina on December 6, 1927, and noted for its strong yellow appearance, caused by emission from sodium atoms.
It has been more than 105 AU from the Sun since 2010.
The comet was mentioned in J R R Tolkien's book Letters From Father Christmas.
- "JPL Small-Body Database Browser: C/1927 X1 (Skjellerup-Maristany)" (1928-03-29 last obs (arc=115 days)). Jet Propulsion Laboratory. Retrieved 2011-04-07.
- Donald K. Yeomans (April 2007). "Great Comets in History". Jet Propulsion Laboratory/California Institute of Technology (Solar System Dynamics). Retrieved 2011-08-07.
- Marcus, Joseph N. (October 2007). "Forward-Scattering Enhancement of Comet Brightness. II. The Light Curve of C/2006 P1" (PDF). International Comet Quarterly. pp. 119–130.
- Horizons output. "Observer Table for Comet C/1927 X1 (Skjellerup-Maristany)". Retrieved 2011-08-07. (Observer Location:Geocentric )
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