357 Ninina

357 Ninina
Orbital diagram
Discovery
Discovered byAuguste Charlois
Discovery date11 February 1893
Designations
(357) Ninina
1893 J
Main belt
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc108.56 yr (39650 d)
Aphelion3.38973 AU (507.096 Gm)
Perihelion2.92272 AU (437.233 Gm)
Semi-major axis
3.15623 AU (472.165 Gm)
Eccentricity0.073982
5.61 yr (2,048.1 d)
144.322°
0° 10m 32.783s / day
Inclination15.0642°
137.809°
Argument of perihelion
254.250°
Physical characteristics
Dimensions106.10±2.2 km
36.0105 h (1.50044 d)
0.0510±0.002
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.[2] This minor planet is orbiting at a distance of 3.16 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.[3] 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[4]

    References

    1. 1 2 3 "357 Ninina (1893 J)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 21 June 2024.
    2. ↑ Schmadel, Lutz D. (2013). Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 68. ISBN 9783662066157.
    3. ↑ 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.
    4. ↑ 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.


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