There is a picture of that oracle bone in the chapter Chinese and Korean Star Maps and Catalogs by F. Richard Stephenson in the University of Chicago's History of Cartography (p514):
There is also a sketch of the bone, together with a brief discussion of the inscription on pp 3-4 of The Astronomy Revolution: 400 Years of Exploring the Cosmos by Donald G. York, Owen Gingerich, & Shuang-Nan Zhang.
The Taosi Solar Observatory
Discovered in 2003, this ancient observatory is located at Taosi. Paragrah below is from Early China: A Social and Cultural History (Cambridge, 2013), p.33:
Stratigraphic evidence suggests that the building was constructed and used for perhaps a few centuries during the middle period of Taosi before its destruction around 2100 BCE. On-site experiments that took place in the years following the discovery leave little doubt that the platform was used for solar observation between two solstitial extremes in any given year, and it is one of the oldest astronomical observatories in the confirmed by archeology. ... Taosi astronomers are concerned with with correlations between the lunar months and the solar year and this eventually gave rise to a lunar-solar combined calendar with the intercalary thirteenth month inserted in the regular year circles, a system that was definitely in use in China by the thirteenth century BC, proven by the late Shang by oracle-bone studies.
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