28 Bellona
 Bellona (apmag 11.8) near a mag 12 star and background galaxies | |
| Discovery | |
|---|---|
| Discovered by | R. Luther |
| Discovery date | March 1, 1854 |
| Designations | |
| Pronunciation | /bɛˈloʊnə/ be-LOH-nə |
| 1951 CC2 | |
| Main belt | |
| Symbol |  |
| 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) | |
Average orbital speed | 17.77 km/s |
| 121.574° | |
| Inclination | 9.430° |
| 144.330° | |
| 344.461° | |
| Physical characteristics | |
| Dimensions | 97 ± 11 km[1] 120.9 ± 3.4 km (IRAS)[2] |
| Mass | 1.9×1018? kg (assumed) |
Mean density | 2.0? g/cm³ |
| 0.0338? m/s² | |
| 0.0639? km/s | |
| 15.706 h[2][3] | |
| Albedo | 0.1763[2][4] |
| Temperature | ~163 K |
Spectral type | S[2] |
| 7.09[2] | |
28 Bellona is a large main-belt asteroid. It was discovered by 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.
Bellona has been studied by radar.[5]
References
- ^ Ďurech, Josef (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.
{{cite journal}}: Unknown parameter|coauthors=ignored (|author=suggested) (help) - ^ a b c d e "JPL Small-Body Database Browser: 28 Bellona". Jet Propulsion Laboratory. 2012-01-02 last obs. Retrieved 2012-01-28.
{{cite web}}: Check date values in:|date=(help) - ^ http://www.psi.edu/pds/asteroid/EAR_A_5_DDR_DERIVED_LIGHTCURVE_V8_0/data/lc.tab
- ^ http://www.psi.edu/pds/asteroid/EAR_A_5_DDR_ALBEDOS_V1_1/data/albedos.tab
- ^ "Radar-Detected Asteroids and Comets". NASA/JPL Asteroid Radar Research. Retrieved 2011-10-30.
External links
- Orbital simulation from JPL (Java) / Ephemeris
- "Elements and Ephemeris for (28) Bellona". Minor Planet Center.
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