 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 | /bɛˈloʊnə/[1] |
Named after | Bellona |
| 1951 CC2 | |
| Main belt | |
| Adjectives | Bellonian/bɛˈloʊniən/[1] |
| Symbol | .svg) (historical) |
| Orbital characteristics[2] | |
| Epoch 21 November 2025 (JD 2461000.5) | |
| Aphelion | 3.191AU |
| Perihelion | 2.364 AU |
| 2.777 AU | |
| Eccentricity | 0.149 |
| 4.628yr (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)×1018 kg[4] |
Meandensity | 3.95 ± 1.28 g/cm3[4] |
| 15.706 h[2][5] | |
| 0.1763[2][6] | |
| S[2] | |
| 7.09[2] | |
28 Bellona is a largeasteroid located in themain-belt. It was discovered by German astronomerRobert Luther on 1 March 1854, and named afterBellōna, theRoman goddess ofwar; the name was chosen to mark the beginning of theCrimean War. Its historical symbol was Bellona's whip and spear; it was encoded inUnicode 17.0 as U+1CECE (.svg)
).[7][8]
Bellona is a stony (S-type) asteroid with a cross-section size of around 100–120 km. 28 Bellona is orbiting theSun with a period of 4.63 years.
Bellona has been studied byradar.[9]Photometric observations of this asteroid at the Palmer Divide Observatory inColorado Springs, Colorado in 2007 gave alight curve with a period of 15.707 ± 0.002 hours and a brightness variation of 0.27 ± 0.03 inmagnitude. 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]
_Bellona.png)
2025-07-08 last obs
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