Who is gan de

He then composed a star atlas including the Chinese constellations. Skip to main content Skip to table of contents. This service is more advanced with JavaScript available. Biographical Encyclopedia of Astronomers Edition. Williams, Katherine Bracher, Richard A.

Jarrell, Jordan D. Contents Search. Gan De. Authors Authors and affiliations Li Di. February Acta Astrophysica Sinica. Bibcode : AcApS Hughes, David W. Yi-Long, Huang In Helaine Selin ed. Encyclopaedia of the history of science, technology, and medicine in non-western cultures. ISBN Deng, Yinke. Chinese Ancient Inventions. This records an observation which he made in the summer of BC:- Jupiter was very large and bright. Apparently, there was a small reddish star appended to its side.

This is called "an alliance". Of course the intriguing question is what was the small reddish star which Gan De saw? Could it have been one of Jupiter's satellites? This has intrigued those interested in the history of astronomy. If he did see one of the Galilean satellites, then it would have been Ganymede which is the brightest of the four. Ganymede can have a magnitude of 4.