| 词条 | 28 Bellona |
| 释义 |
| minorplanet = yes | background=#D6D6D6 | name=28 Bellona | symbol= | image = 28Bell-LB1-mag12.jpg | image_size = 245 | caption = Bellona (apmag 11.8) near a magnitude 12 star, next to Abell 2670[1] | discoverer=R. Luther | discovered=1 March 1854 | mpc_name=(28) Bellona | alt_names={{mp|1951 CC|2}} | pronounced ={{IPAc-en|b|ɛ|ˈ|l|oʊ|n|ə}} {{Respell|bel|OH|nə}} | named_after = Bellona | mp_category=Main belt | epoch=Sept 30, 2012 (JD 2456200.5) | semimajor=415.608 Gm (2.777 AU) | perihelion=353.977 Gm (2.358 AU) | aphelion=477.240 Gm (3.196 AU) | eccentricity=0.151 | period=1690.19 d (4.63 a) | inclination=9.430° | asc_node=144.330° | arg_peri=344.461° | mean_anomaly=121.574° | dimensions=97 ± 11 km 120.9 ± 3.4 km (IRAS)[3] 108.10 ± 11.49 km[4] | mass={{val|2.62|0.15|e=18|ul=kg}}[4] | density=3.95 ± 1.28 g/cm3[4] | rotation=15.706 h[3][2] | spectral_type=S [3] | abs_magnitude=7.09[3] | albedo=0.1763[3][3] }} Bellona (minor planet designation: 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.[4] 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.[14] References1. ^{{cite web|title=Astrometry.net job 1005148|url=http://nova.astrometry.net/user_images/567142#annotated|website=Astrometry.net|accessdate=6 February 2015}} [5][6][7]2. ^http://www.psi.edu/pds/asteroid/EAR_A_5_DDR_DERIVED_LIGHTCURVE_V8_0/data/lc.tab 3. ^http://www.psi.edu/pds/asteroid/EAR_A_5_DDR_ALBEDOS_V1_1/data/albedos.tab 4. ^{{cite web |title=Radar-Detected Asteroids and Comets |publisher=NASA/JPL Asteroid Radar Research |url=http://echo.jpl.nasa.gov/asteroids/ |accessdate=2011-10-30}} 5. ^1 2 3 4 5 {{cite web |quote=2012-01-02 last obs |title=JPL Small-Body Database Browser: 28 Bellona |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=28 |publisher=Jet Propulsion Laboratory |accessdate=2012-01-28}} 6. ^1 2 3 {{Citation | first1 = B. | last1 = Carry | title = Density of asteroids | work = Planetary and Space Science | volume = 73 | pages = 98–118 |date=December 2012 | doi = 10.1016/j.pss.2012.03.009 | bibcode = 2012P&SS...73...98C | postscript= .|arxiv = 1203.4336 }} See Table 1. 7. ^1 {{Citation | last1 = Warner | first1 = Brian D. | title = Asteroid Lightcurve Analysis at the Palmer Divide Observatory - March-May 2007 | work = The Minor Planet Bulletin | volume = 34 | issue = 4 | pages = 104–107 |date=December 2007 | bibcode = 2007MPBu...34..104W | postscript= .}} }} External links
7 : Background asteroids|Discoveries by Robert Luther|Minor planets named from Roman mythology|Named minor planets|S-type asteroids (SMASS)|S-type asteroids (Tholen)|Astronomical objects discovered in 1854 |
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