 | |
| Discovery | |
|---|---|
| Discovered by | R. Luther |
| Discovery date | 1 March 1854 |
| Designations | |
| (28) Bellona | |
| Pronunciation | /bɛˈloʊnə/[2] |
Named after | Bellona |
| 1951 CC2 | |
| Main belt | |
| Adjectives | Bellonian /bɛˈloʊniən/[2] |
| Symbol | .svg){kind=small} (historical) |
| Orbital characteristics | |
| Epoch Sept 30, 2012 (JD 2456200.5) | |
| Aphelion | 477.240 Gm (3.196 AU) |
| Perihelion | 353.977 Gm (2.358 AU) |
| 415.608 Gm (2.777 AU) | |
| Eccentricity | 0.151 |
| 1690.19 d (4.63 a) | |
| 121.574° | |
| Inclination | 9.430° |
| 144.330° | |
| 344.461° | |
| Physical characteristics | |
| Dimensions | 97 ± 11 km[3] 120.9 ± 3.4 km (IRAS)[4] 108.10 ± 11.49 km[5] |
| Mass | (2.62±0.15)×1018 kg[5] |
Mean density | 3.95 ± 1.28 g/cm3[5] |
| 15.706 h[4][6] | |
| 0.1763[4][7] | |
| S [4] | |
| 7.09[4] | |
28 Bellona is a large main-belt asteroid. It was discovered by German astronomer R. Luther on March 1, 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 is in the pipeline for Unicode 17.0 as U+1CECE (.svg){kind=small}
).[8][9]
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.[10] 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.[11]
- ^ "Astrometry.net job 1005148". Astrometry.net. Retrieved 6 February 2015.
- ^ a b "Bellona". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
- ^ Cite error: The named reference
Ďurech2011was invoked but never defined (see the help page). - ^ a b c d e Cite error: The named reference
jpldatawas invoked but never defined (see the help page). - ^ a b c Cite error: The named reference
Carry2012was invoked but never defined (see the help page). - ^ "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.
- ^ Unicode. "Proposed New Characters: The Pipeline". unicode.org. The Unicode Consortium. Retrieved 6 November 2023.
- ^ "Radar-Detected Asteroids and Comets". NASA/JPL Asteroid Radar Research. Retrieved 30 October 2011.
- ^ Cite error: The named reference
Warner2007was invoked but never defined (see the help page).