Pan (in astronomy)
Pan, in astronomy, one of the named moons, or natural satellites, of Saturn. Also known as Saturn XVIII (or S18), Pan is 12.5 mi (20 km) in diameter, orbits Saturn at a mean distance of 83,000 mi (133,583 km), and has an orbital period of 0.575 earth days. The rotational period is unknown but is assumed to be the same as the orbital period. It was discovered by Mark R. Showalter at the Ames Research Center in California in 1990 while reviewing photographs taken by Voyager 1 during its flyby of Saturn in 1980. The innermost of Saturn's confirmed moons, Pan's orbit is within the Encke Division, or Encke Gap, of Saturn's A ring, where it functions as a shepherd satellite (a moon that limits the extent of a planetary ring through gravitational forces), keeping the gap open.
"Pan (in astronomy)." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (September 24, 2017). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/pan-astronomy
"Pan (in astronomy)." The Columbia Encyclopedia, 6th ed.. . Retrieved September 24, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/pan-astronomy
Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).
Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.
Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:
Modern Language Association
The Chicago Manual of Style
American Psychological Association
- Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
- In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.