Heinrich Carl Friedrich Kreutz (September 8, 1854 – July 13, 1907) was a German

astronomer An astronomer is a scientist in the field of astronomy who focuses their studies on a specific question or field outside the scope of Earth. They observe astronomical objects such as stars, planets, moons, comets and galaxies – in either ...

, most notable for his studies of the orbits of several sungrazing comets, which revealed that they were all related objects, produced when a very large sun-grazing comet fragmented several hundred years previously. The group is now known as the

Kreutz Sungrazers The Kreutz sungrazers ( ) are a family of sungrazing comets, characterized by orbits taking them extremely close to the Sun at perihelion. They are believed to be fragments of one large comet that broke up several centuries ago and are named for G ...

, and has produced some of the brightest comets ever seen. Kreutz was born in

Siegen Siegen () is a city in Germany, in the south Westphalian part of North Rhine-Westphalia. It is located in the district of Siegen-Wittgenstein in the Arnsberg region. The university town (nearly 20,000 students in the 2018–2019 winter semest ...

in 1854, and obtained his PhD at the

University of Bonn The Rhenish Friedrich Wilhelm University of Bonn (german: Rheinische Friedrich-Wilhelms-Universität Bonn) is a public research university located in Bonn, North Rhine-Westphalia, Germany. It was founded in its present form as the ( en, Rhine ...

in 1880 on the orbit of comet

C/1861 J1 The Great Comet of 1861, formally designated C/1861 J1 and 1861 II, is a long-period comet that was visible to the naked eye for approximately 3 months. It was categorized as a great comet—one of the eight greatest comets of the 19th century ...

. In 1882 he moved to

Kiel Kiel () is the capital and most populous city in the northern German state of Schleswig-Holstein, with a population of 246,243 (2021). Kiel lies approximately north of Hamburg. Due to its geographic location in the southeast of the Jutland ...

, working at the observatory and university there. In 1896 he became the editor of the '' Astronomische Nachrichten'', the leading astronomical

journal A journal, from the Old French ''journal'' (meaning "daily"), may refer to: *Bullet journal, a method of personal organization *Diary, a record of what happened over the course of a day or other period *Daybook, also known as a general journal, a ...

of the time, and held the position until his death in 1907. The

minor planet According to the International Astronomical Union (IAU), a minor planet is an astronomical object in direct orbit around the Sun that is exclusively classified as neither a planet nor a comet. Before 2006, the IAU officially used the term ''mino ...

3635 Kreutz, discovered by

Luboš Kohoutek Luboš Kohoutek (, born 29 January 1935) is a Czech astronomer and a discoverer of minor planets and comets, including Comet Kohoutek which was visible to the naked eye in 1973. He also discovered a large number of planetary nebulae. Biography ...

in 1981, was named after him.

References

Bibliography

* Obituary - 1907, Publications of the Astronomical Society of the Pacific, v. 19, p. 248

External links

Biography from SEDS
{{DEFAULTSORT:Kreutz, Heinrich 1854 births 1907 deaths People from Siegen People from the Province of Westphalia 19th-century German astronomers University of Bonn alumni 20th-century German astronomers