Ernst Hartwig
Encyclopedia
Carl Ernst Albrecht Hartwig (January 14, 1851 in Frankfurt
– May 3, 1923) was a German
astronomer
.
He discovered a new star
in M31
(the "Andromeda Nebula") on August 20, 1885. This object was designated as supernova
"S Andromedae
". During the 1883 observation campaign of comet
6P/d'Arrest
he found five NGC
objects working at the Strasbourg Observatory. In 1874 he became assistant at Strassburg Observatory, 1884 astronomer at Dorpat Observatory and 1887 director of Bamberg Observatory.
Crater
s on the Moon
and on Mars
were named in his honor.
Frankfurt
Frankfurt am Main , commonly known simply as Frankfurt, is the largest city in the German state of Hesse and the fifth-largest city in Germany, with a 2010 population of 688,249. The urban area had an estimated population of 2,300,000 in 2010...
– May 3, 1923) was a German
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...
astronomer
Astronomer
An astronomer is a scientist who studies celestial bodies such as planets, stars and galaxies.Historically, astronomy was more concerned with the classification and description of phenomena in the sky, while astrophysics attempted to explain these phenomena and the differences between them using...
.
He discovered a new star
Star
A star is a massive, luminous sphere of plasma held together by gravity. At the end of its lifetime, a star can also contain a proportion of degenerate matter. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth...
in M31
Andromeda Galaxy
The Andromeda Galaxy is a spiral galaxy approximately 2.5 million light-years from Earth in the constellation Andromeda. It is also known as Messier 31, M31, or NGC 224, and is often referred to as the Great Andromeda Nebula in older texts. Andromeda is the nearest spiral galaxy to the...
(the "Andromeda Nebula") on August 20, 1885. This object was designated as supernova
Supernova
A supernova is a stellar explosion that is more energetic than a nova. It is pronounced with the plural supernovae or supernovas. Supernovae are extremely luminous and cause a burst of radiation that often briefly outshines an entire galaxy, before fading from view over several weeks or months...
"S Andromedae
S Andromedae
|- style="background-color: #A0B0FF;" colspan="3"| Database References|- bgcolor="#FFFAFA"| Simbad || |- bgcolor="#FFFAFA"| ||...
". During the 1883 observation campaign of comet
Comet
A comet is an icy small Solar System body that, when close enough to the Sun, displays a visible coma and sometimes also a tail. These phenomena are both due to the effects of solar radiation and the solar wind upon the nucleus of the comet...
6P/d'Arrest
6P/d'Arrest
6P/d'Arrest is a periodic comet in our Solar System, orbiting between Mars and Jupiter. It passed 53 Gm from the Earth, about a third of the Earth-Sun distance, on August 9, 2008....
he found five NGC
New General Catalogue
The New General Catalogue of Nebulae and Clusters of Stars is a well-known catalogue of deep sky objects in astronomy. It contains 7,840 objects, known as the NGC objects...
objects working at the Strasbourg Observatory. In 1874 he became assistant at Strassburg Observatory, 1884 astronomer at Dorpat Observatory and 1887 director of Bamberg Observatory.
Crater
Impact crater
In the broadest sense, the term impact crater can be applied to any depression, natural or manmade, resulting from the high velocity impact of a projectile with a larger body...
s on the Moon
Moon
The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...
and on Mars
Mars
Mars is the fourth planet from the Sun in the Solar System. The planet is named after the Roman god of war, Mars. It is often described as the "Red Planet", as the iron oxide prevalent on its surface gives it a reddish appearance...
were named in his honor.