[2] It was independently discovered by amateur astronomers John Francis Skjellerup in Australia on 28 November 1927 and Edmundo Maristany in Argentina on 6 December 1927, and noted for its strong yellow appearance and the detection of emission from sodium atoms.

[3] The comet was already visible with naked eye upon discovery and was moving towards the Sun.

[6] It was reported many times brighter than Venus on December 16, so bright that it could be measured spectrographically in daylight.

[4] George van Biesbroeck reported that the comet could no longer be detected with certainty without optical aid on 23 December.

[7] A long but faint tail up to 40 degrees was visible in the sky between 29 December and 2 January.