Astronomy:357 Ninina
 Orbital diagram | |
| Discovery | |
|---|---|
| Discovered by | Auguste Charlois |
| Discovery date | 11 February 1893 |
| Designations | |
| (357) Ninina | |
| 1893 J | |
| Minor planet category | Main belt |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 108.56 yr (39650 d) |
| |{{{apsis}}}|helion}} | 3.38973 astronomical unit|AU (507.096 Gm) |
| |{{{apsis}}}|helion}} | 2.92272 AU (437.233 Gm) |
| 3.15623 AU (472.165 Gm) | |
| Eccentricity | 0.073982 |
| Orbital period | 5.61 yr (2,048.1 d) |
| Mean anomaly | 144.322° |
| Mean motion | 0° 10m 32.783s / day |
| Inclination | 15.0642° |
| Longitude of ascending node | 137.809° |
| 254.250° | |
| Physical characteristics | |
| Dimensions | 97+7 −8 km[2] |
| Rotation period | 36.0105 h (1.50044 d) |
| Geometric albedo | 0.0510±0.002 |
| Absolute magnitude (H) | 8.72 |
357 Ninina is a large main-belt asteroid.[1] It was discovered by Auguste Charlois on February 11, 1893, in Nice. The reference of its name is not known, though Ninine is a French personal name.[3] This minor planet is orbiting at a distance of 3.16 astronomical unit|AU from the Sun with a period of 5.61 years and an orbital eccentricity (ovalness) of 0.074. The orbital plane is inclined at an angle of 15.1° to the plane of the ecliptic.[1]
Photometric observations of 357 Ninina during 2023 provided a light curve that presents an Earth commensurate rotation period of 36.00±0.01 h with a brightness amplitude of 0.08±0.01 in magnitude.[4] In 2024, spin shape modelling using the light curve inversion technique show a blocky, rounded figure, with a refined rotation period of 35.9840±0.0005 h[5]
References
- ↑ 1.0 1.1 1.2 "357 Ninina (1893 J)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=357.
- ↑ Choukroun, A.; Marciniak, A.; Ďurech, J.; Perła, J.; Ogłoza, W.; Szakats, R.; Molnar, L.; Pal, A. et al. (2025). "Asteroid sizes determined with thermophysical model and stellar occultations". Astronomy & Astrophysics 698: A298. doi:10.1051/0004-6361/202554476. Bibcode: 2025A&A...698A.298C.
- ↑ Schmadel, Lutz D. (2013). Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 68. ISBN 9783662066157. https://books.google.com/books?id=eHv1CAAAQBAJ&pg=PA68.
- ↑ Pilcher, Frederick et al. (October 2023). "A New Lightcurve of 357 Ninina". Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 50 (4): 255–256. Bibcode: 2023MPBu...50..255P.
- ↑ Franco, Lorenzo et al. (April 2024). "Spin-Shape Model for 357 Ninnina". Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 51 (2): 100–102. Bibcode: 2024MPBu...51..100F.
External links
- 357 Ninina at AstDyS-2, Asteroids—Dynamic Site
- 357 Ninina at the JPL Small-Body Database
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