Philip Childs Keenan
id:
philip-childs-keenan-266-95768
title:
Philip Childs Keenan
text:
Philip Childs Keenan was an American astronomer. Keenan was an American spectroscopist who collaborated with William Wilson Morgan and Edith Kellman (1911–2007) to develop the MKK stellar spectral classification system between 1939 and 1943. This two-dimensional classification system was further revised by Morgan and Keenan in 1973. The MK system remains the standard stellar spectral classification system used by astronomers today. During their long collaboration, Keenan tended to focus his rese
brand slug:
wiki
category slug:
encyclopedia
description:
American astronomer
original url:
https://en.wikipedia.org/wiki/Philip_Childs_Keenan
date created:
date modified:
2022-01-12T05:05:29Z
main entity:
{"identifier":"Q2086095","url":"https://www.wikidata.org/entity/Q2086095"}
image:
fields total:
13
integrity:
14