astro.wikisort.org - Asteroid
723 Hammonia is a minor planet orbiting the Sun. It was discovered in 1911 and is named after the city of Hamburg.[2] Although the name alludes to Hamburg it was discovered in Vienna.[3] (Vienna is the capital of Austria)
| Discovery | |
|---|---|
| Discovered by | J. Palisa |
| Discovery site | Vienna Observatory |
| Discovery date | 21 October 1911 |
| Designations | |
MPC designation | (723) Hammonia |
| Pronunciation | /hæˈmoʊniə/ |
Named after | Hamburg |
Alternative designations | 1911 NB |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 113.17 yr (41337 d) |
| Aphelion | 3.1540 AU (471.83 Gm) |
| Perihelion | 2.8324 AU (423.72 Gm) |
Semi-major axis | 2.9932 AU (447.78 Gm) |
| Eccentricity | 0.053719 |
Orbital period (sidereal) | 5.18 yr (1891.5 d) |
Mean anomaly | 71.167° |
Mean motion | 0° 11m 25.188s / day |
| Inclination | 4.9954° |
Longitude of ascending node | 163.351° |
Argument of perihelion | 246.398° |
| Physical characteristics | |
Mean radius | 17.84±0.7 km |
Synodic rotation period | 5.436 h (0.2265 d) |
Geometric albedo | 0.1829±0.015 |
Absolute magnitude (H) | 10.0 |
The asteroid was discovered by the noted and prolific astronomer Johann Palisa.[4] He worked from Pola early in his career and later from Vienna observatories.[5] The same night he discovered Hammonia, he also discovered 724 Hapag and 725 Amanda.[6] He discovered dozens and dozens of asteroids between 1874 and 1923, ranging from 136 Austria to 1073 Gellivara.[7]
As seen from a certain area on Earth, 723 Hammonia occulted the star 3UC149-190572 on June 3, 2013.[8]
In 2014 it was noted to have a high-albedo and amorphous Mg pyroxenes was suggested as a possible reason for this.[9]
See also
- 449 Hamburga (another asteroid named after Hamburg)
- Vienna Observatory
References
- "723 Hammonia (1911 NB)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 5 May 2016.
- (723) Hammonia
- (723) Hammonia
- "Johann Palisa, the most successful visual discoverer of asteroids" (PDF). Archived from the original (PDF) on 28 September 2007. Retrieved 31 August 2015.
- "Johann Palisa, the most successful visual discoverer of asteroids" (PDF). Archived from the original (PDF) on 28 September 2007. Retrieved 31 August 2015.
- "Johann Palisa, the most successful visual discoverer of asteroids" (PDF). Archived from the original (PDF) on 28 September 2007. Retrieved 31 August 2015.
- "Johann Palisa, the most successful visual discoverer of asteroids" (PDF). Archived from the original (PDF) on 28 September 2007. Retrieved 31 August 2015.
- OCULTACION 3UC149-190572 POR 723 HAMMONIA 2013-06-03
- High-albedo C-complex outer-belt asteroids: The near-infrared spectra
External links
- 723 Hammonia at AstDyS-2, Asteroids—Dynamic Site
- 723 Hammonia at the JPL Small-Body Database
 | This article about an asteroid native to the asteroid belt is a stub. You can help Wikipedia by expanding it. |
На других языках
[de] (723) Hammonia
(723) Hammonia ist ein Asteroid des Hauptgürtels, der am 21. Oktober 1911 vom österreichischen Astronomen Johann Palisa in Wien entdeckt wurde.- [en] 723 Hammonia
[es] (723) Hammonia
(723) Hammonia es un asteroide perteneciente al cinturón de asteroides descubierto el 21 de octubre de 1911 por Johann Palisa desde el observatorio de Viena, Austria. Está nombrado por la ciudad alemana de Hamburgo.[2][ru] (723) Гаммония
(723) Гаммония (лат. Hammonia) — астероид главного пояса, открытый 21 октября 1911 года австрийским астрономом Иоганном Пализой в Венской обсерватории и назван в честь латинского обозначения города Гамбург[1].Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
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