The following is an archived discussion of the DYK nomination of the article below. Please do not modify this page. Subsequent comments should be made on the appropriate discussion page (such as this nomination's talk page, the article's talk page or Wikipedia talk:Did you know), unless there is consensus to re-open the discussion at this page. No further edits should be made to this page.

The result was: promoted by 97198 (talk) 09:13, 10 October 2019 (UTC)

• ... that satellites in a geostationary orbit appear to sit stationary in the sky? A geostationary orbit is geosynchronous, but it is also required to have zero inclination angle and zero eccentricity. Geostationary satellites, therefore, remain essentially motionless above a point on the Equator. [1]
  • ALT1:... that the concept of a geostationary orbit was popularised by science-fiction author Arthur C. Clarke in 1945, then used 18 years later? [2] [3])

• Reviewed: <5 DYKs so no QPQ needed

Improved to Good Article status by Spacepine (talk). Self-nominated at 03:06, 4 October 2019 (UTC).

• Reviewing

• Article is new enough on GA status, long enough, well cited and neutral.
• No copyvio on Earwig
• Hooks are short enough, of general interest and supported by inline citations. Consider tweaking ALT1 to read '...that the concept of geostationary orbit was popularised...'
• QPQ not required
• Informative, well written article. Good to go. Papamac (talk) 08:12, 4 October 2019 (UTC)

Thanks, edited ALT1 as suggested --Spacepine (talk) 12:05, 4 October 2019 (UTC)