328 Gudrun

Also known as (328) Gudrun, Gudrun

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: Max Wolf
Discovery site: Heidelberg Obs.
Discovery date: 18 March 1892
Pronunciation: / ˈ ɡ ʊ d r uː n /
Named after: Gudrun
Minor planet category: Main belt

~1 min read

Article

328 Gudrun is a large main-belt asteroid. It was discovered by German astronomer Max Wolf on March 18, 1892, in Heidelberg. This minor planet is orbiting the Sun at a distance of 3.11 AU with a period of 5.486 yr and an orbital eccentricity of 0.106. The orbital plane is inclined at an angle of 16.1° to the plane of the ecliptic.

Analysis of the light curve generated from photometric data collected in March 2012 provide a rotation period estimate of 10.992±0.002 h with a brightness variation of 0.32±0.02 in B magnitude. A study in 2022 found a classification of Cgh for 328 Gudrun, suggesting this is a dark, carbonaceous asteroid.