28 Bellona
Main-belt asteroid
From Wikipedia, the free encyclopedia
28 Bellona is a large asteroid located in the main-belt. It was discovered by German astronomer Robert Luther on 1 March 1854, and named after BellÅna, the Roman goddess of war; the name was chosen to mark the beginning of the Crimean War. Its historical symbol was Bellona's whip and spear; it was encoded in Unicode 17.0 as U+1CECE ð» (.svg){kind=small}
).[7][8]
 a light curve model of 28 Bellona on the top and an image of 28 Bellona on the bottom. | |
| Discovery | |
|---|---|
| Discovered by | Robert Luther |
| Discovery date | 1 March 1854 |
| Designations | |
| (28) Bellona | |
| Pronunciation | /bÉËloÊnÉ/[1] |
Named after | Bellona |
| 1951 CC2 | |
| Main belt | |
| Adjectives | Bellonian /bÉËloÊniÉn/[1] |
| Symbol | .svg){kind=small} (historical) |
| Orbital characteristics[2] | |
| Epoch 21 November 2025 (JD 2461000.5) | |
| Aphelion | 3.191 AU |
| Perihelion | 2.364 AU |
| 2.777 AU | |
| Eccentricity | 0.149 |
| 4.628 yr (1690.55 d) | |
| 65.459° | |
| Inclination | 9.432° |
| 144.151° | |
| 343.462° | |
| Jupiter MOID | 1.872 AU |
| TJupiter | 3.299 |
| Physical characteristics | |
| Dimensions | 97 ± 11 km[3] 120.9 ± 3.4 km (IRAS)[2] 108.10 ± 11.49 km[4] |
| Mass | (2.62±0.15)Ã1018 kg[4] |
Mean density | 3.95 ± 1.28 g/cm3[4] |
| 15.706 h[2][5] | |
| 0.1763[2][6] | |
| S[2] | |
| 7.09[2] | |
Bellona is a stony (S-type) asteroid with a cross-section size of around 100â120 km. 28 Bellona is orbiting the Sun with a period of 4.63 years.
Bellona has been studied by radar.[9] Photometric observations of this asteroid at the Palmer Divide Observatory in Colorado Springs, Colorado in 2007 gave a light curve with a period of 15.707 ± 0.002 hours and a brightness variation of 0.27 ± 0.03 in magnitude. This report is in close agreement with a period estimate of 15.695 hours reported in 1983, and rejects a longer period of 16.523 hours reported in 1979.[10]
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