319 Leona
Main-belt asteroid / From Wikipedia, the free encyclopedia
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319 Leona (provisional designation A920 HE) is a dark, carbonaceous asteroid in the outer regions of the asteroid belt. It was discovered on 8 October 1891, by French astronomer Auguste Charlois at Nice Observatory in France.[10] On 12 December 2023, Leona passed in front of the bright star Betelgeuse and occulted it, which caused the star to briefly dim as seen from Central America, Europe, and east Asia.[11] This occultation was expected to reveal the shape of Leona and the surface of Betelgeuse in high detail.
Quick Facts Discovery, Discovered by ...
Discovery [1] | |
---|---|
Discovered by | A. Charlois |
Discovery site | Nice Obs. |
Discovery date | 8 October 1891 |
Designations | |
(319) Leona | |
Pronunciation | /liːˈoʊnə/[2] |
Named after | unknown Leona[3] |
A920 HE | |
main-belt · (outer) [1][4] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 125.32 yr (45,774 days) |
Aphelion | 4.1451 AU |
Perihelion | 2.6655 AU |
3.4053 AU | |
Eccentricity | 0.2172 |
6.28 yr (2,295 days) | |
21.414° | |
0° 9m 24.48s / day | |
Inclination | 10.564° |
184.95° | |
228.27° | |
Physical characteristics | |
Dimensions | 79.6 km × 54.8 km (± 2.2 km × 1.3 km)[5] |
Mean diameter | 66±2 km[5] |
430±2 h[6] | |
0.085±0.005[1][7] | |
P [8] · X [9] · C [4] | |
10.21[1][10] 10.46±0.06[6] | |
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