Q157047

Also known as (777) Gutemberga, Gutemberga

outer main-belt asteroid

Picture of the Day · NASA

Jupiter and Venus from Earth

2026-06-07

It was visible around the world. The sunset conjunction of Jupiter (left) and Venus (right) in 2012 was visible almost no matter where you lived on Earth. Anyone on our planet with a clear western horizon at sunset could see them. That year, a creative photographer traveled away from the town lights of Szubin, Poland to photograph a near closest approach of the two planets. The bright planets were then separated by only three degrees and his daughter struck a humorous pose. A faint red sunset still glowed in the background. Jupiter and Venus are together again this week after sunset, passing within a degree of each other about two days from today.

Key facts

Discovered by: F. Kaiser
Discovery site: Heidelberg Obs.
Discovery date: 24 January 1914
Named after: Johannes Gutenberg , (German inventor)
Alternative designations: A914 BF · 1926 EF, A924 YB · 1914 TZ
Minor planet category: main-belt · ( outer ) background

~4 min read

Article

777 Gutemberga (prov. designation: A914 BF or 1914 TZ) is a dark and large background asteroid, approximately 66 kilometers (41 miles) in diameter, from the outer regions of the asteroid belt. It was discovered by German astronomer Franz Kaiser at the Heidelberg-Königstuhl State Observatory on 24 January 1914. The carbonaceous C-type asteroid (Cb) has a rotation period of 12.8 hours. It was named after Johannes Gutenberg (ca. 1400–1468), who introduced the printing press to Europe and started the Printing Revolution.

Orbit and classification