(29) Amphitrite
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Asteroid (29) Amphitrite 
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| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Major semi-axis | 2.555 AU |
| eccentricity | 0.073 |
| Perihelion - aphelion | 2.369 AU - 2.741 AU |
| Inclination of the orbit plane | 6.09 ° |
| Length of the ascending node | 356.5 ° |
| Argument of the periapsis | 62.9 ° |
| Sidereal period of rotation | 4 a 30 d |
| Mean orbital velocity | 18.6 km / s |
| Physical Properties | |
| Medium diameter | (189.559 ± 1.129) km |
| Albedo | 0.216 |
| Rotation period | 5 h 24 min |
| Absolute brightness | 5.9 likes |
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Spectral class (according to Tholen) |
S. |
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Spectral class (according to SMASSII) |
S. |
| history | |
| Explorer | Albert Marth |
| Date of discovery | March 1, 1854 |
| Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items. | |
Clockwise from top left (29) Amphitrite, (324) Bamberga , (2) Pallas and (89) Julia . Recording with the VLT
(29) Amphitrite is an asteroid of the main asteroid belt discovered by Albert Marth on March 1, 1854 . It was named after the Greco-Roman sea goddess Amphitrite , daughter of Nereus and Doris, wife of Poseidon .
Amphitrite has an average diameter of around 190 kilometers, making it one of the largest asteroids in the main belt. The asteroid rotates around its own axis in 5 hours and 24 minutes.
During opposition , Amphitrite reaches an apparent magnitude of 8.8 m and is one of the brightest asteroids in the night sky.
Amphitrite is invisible to the naked eye, so you need a telescope or powerful prism binoculars to track it down .
literature
- LD Schmadel : Definitive Orbit of Minor Planet (29) Amphitrite from 91 Oppositions 1825–1985 and a new Determination of the Mass of Jupiter. In: Astronomical News . Volume 307, No. 6, 1986, pp. 363-370, doi: 10.1002 / asna.2113070604