723 Hammonia is a
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 ''minor ...
orbiting the
Sun. It was discovered in 1911 and is named after the city of Hamburg. Although the name alludes to Hamburg it was discovered in Vienna. (Vienna is the capital of Austria)
The asteroid was discovered by the noted and prolific astronomer Johann Palisa. He worked from Pola early in his career and later from Vienna observatories. The same night he discovered Hammonia, he also discovered
724 Hapag
724 Hapag is a minor planet orbiting the Sun in the asteroid belt that was found by Austrian astronomer Johann Palisa in 1911 and named after the German shipping company Hamburg America Line. It was assigned a provisional name of 1911 NC, then be ...
and
725 Amanda
725 Amanda ('' prov. designation:'' ''or'' ) is a dark background asteroid, approximately in diameter, that is located in the central regions of the asteroid belt. It was discovered by Austrian astronomer Johann Palisa at the Vienna Observat ...
. He discovered dozens and dozens of asteroids between 1874 and 1923, ranging from
136 Austria
Austria ( minor planet designation: 136 Austria) is a main-belt asteroid that was found by the prolific asteroid discoverer Johann Palisa on 18 March 1874, from the Austrian Naval Observatory in Pola, Istria. It was his first asteroid discove ...
to
1073 Gellivara.
As seen from a certain area on Earth, 723 Hammonia occulted the star 3UC149-190572 on June 3, 2013.
In 2014 it was noted to have a high-albedo and amorphous Mg pyroxenes was suggested as a possible reason for this.
High-albedo C-complex outer-belt asteroids: The near-infrared spectra
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See also
* 449 Hamburga
Hamburga (minor planet designation: 449 Hamburga) is a carbonaceous asteroid from the background population of the intermediate asteroid belt, approximately 75 kilometers in diameter. It was discovered by German astronomers Max Wolf and Friedric ...
(another asteroid named after Hamburg)
* Vienna Observatory
References
External links
*
*
Background asteroids
Hammonia
Hammonia is the female personification of Hamburg.
The figure of Hammonia as symbol of Hamburg first appears in art and literature in the 18th century. Up until the Protestant Reformation, the city's patroness had been the Virgin Mary.
A tall ...
Hammonia
Hammonia is the female personification of Hamburg.
The figure of Hammonia as symbol of Hamburg first appears in art and literature in the 18th century. Up until the Protestant Reformation, the city's patroness had been the Virgin Mary.
A tall ...
C-type asteroids (SMASS)
19111021
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