28 Bellona
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 | (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)×1018 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] | |
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 Bellōna, 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 ().[7][8]
Bellona is a stony (S-type) asteroid with a cross-section size of around 100–120 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]
References
- ^ a b "Bellona". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
- ^ a b c d e f "JPL Small-Body Database Browser: 28 Bellona". Jet Propulsion Laboratory. Retrieved 22 January 2026.
2025-07-08 last obs
- ^ Ďurech, Josef; Kaasalainen, Mikko; Herald, David; Dunham, David; Timerson, Brad; Hanuš, Josef; et al. (2011). "Combining asteroid models derived by lightcurve inversion with asteroidal occultation silhouettes" (PDF). Icarus. 214 (2): 652–670. arXiv:1104.4227. Bibcode:2011Icar..214..652D. doi:10.1016/j.icarus.2011.03.016. S2CID 119271216. Archived from the original (PDF) on 3 March 2016. Retrieved 26 January 2012.
- ^ a b c Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73 (1): 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009, S2CID 119226456. See Table 1.
- ^ "Archived copy". Archived from the original on 13 September 2006. Retrieved 12 August 2006.
{{cite web}}: CS1 maint: archived copy as title (link) - ^ "Archived copy". Archived from the original on 22 July 2012. Retrieved 12 August 2006.
{{cite web}}: CS1 maint: archived copy as title (link) - ^ Bala, Gavin Jared; Miller, Kirk (18 September 2023). "Unicode request for historical asteroid symbols" (PDF). unicode.org. Unicode. Retrieved 26 September 2023.
- ^ "Miscellaneous Symbols Supplement" (PDF). unicode.org. The Unicode Consortium. 2025. Retrieved 9 September 2025.
- ^ "Radar-Detected Asteroids and Comets". NASA/JPL Asteroid Radar Research. Retrieved 30 October 2011.
- ^ Warner, Brian D. (December 2007), "Asteroid Lightcurve Analysis at the Palmer Divide Observatory - March-May 2007", The Minor Planet Bulletin, 34 (4): 104–107, Bibcode:2007MPBu...34..104W.
External links
- Lightcurve plot of 28 Bellona, Palmer Divide Observatory, B. D. Warner (2007)
- Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 28 Bellona at AstDyS-2, Asteroids—Dynamic Site
- 28 Bellona at the JPL Small-Body Database