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| Orbital characteristics 1 | |
|---|---|
| Orbit type | Main belt |
| Semimajor axis | 2.365 AU |
| Perihelion distance | 2.207 AU |
| Aphelion distance | 2.523 AU |
| Orbital period | 3.64 years |
| Inclination | 9.97° |
| Eccentricity | 0.067 |
| Physical characteristics 1 | |
| Diameter | 147.9 km |
| Rotation period 3 | 7.783 hours |
| Spectral class | GG-type asteroid is a subdivision of C-type asteroids distinguished spectrally by differences in the ultraviolet absorption. The most notable asteroid in this class is 1 Ceres. You can use the "What links here" toolbox link to find asteroids of this type. |
| Abs. magnitudeIn astronomy, absolute magnitude is the apparent magnitude, m an object would have if it were at a standardized distance away. It allows the overall brightnesses of objects to be compared without regards to distance. Absolute Magnitude for stars M In stel | 7.35 |
| AlbedoNote: This article discusses the physical or planetological property of albedo. For other usage, see Albedo (disambiguation). The albedo is a measure of reflectivity of a surface or body. It is the ratio of electromagnetic radiation reflected to the amoun 4 | 0.093 |
| History 2 | |
| Discoverer | A. LaurentLaurent was a Frenchman who discovered the asteroid 51 Nemausa in 1858. He never made any more asteroid discoveries and not much more seems to be known about him. He was described as a "very skillful young man" un jeune homme tres habile by Edouard Stepha, 1858Events January 14 Felice Orsini and his accomplices fail to assassinate Napoleon III in Paris but their bombs kill 156 bystanders. Because of the involvement of French emigres living in Britain, there is a brief anti-British feeling in France but the empe |
51 Nemausa is a large Main belt asteroid similar to 1 Ceres in composition.
It was discovered in the city of Nīmes, France, after which it was named (in its Latin name). The discoverer was a certain " A. Laurent" who never made any more asteroid discoveries and about whom not much seems to be known.
The asteroid was discovered using the private observatory at the house formerly occupied by Benjamin Valz, who left to become the new director of the Marseille Observatory . He entrusted his former observatory to A. Laurent, who later found the asteroid. The house, at 32 rue Nationale in Nīmes, has a plaque commemorating the discovery. [1]
A small satellite has been suggested based on lightcurve data. [2]
Main Belt asteroids