| 词条 | 56 Melete |
| 释义 |
| image=A666.M1106.shape(1).png | image_size = 265 | caption= Three-dimensional model of 56 Melete created based on light-curve | minorplanet=yes | background=#D6D6D6 | name=56 Melete | discoverer=Hermann Mayer Salomon Goldschmidt | discovered=September 9, 1857 | mpc_name=(56) Melete | alt_names= | named_after = Melete | mp_category=Main belt | epoch=December 31, 2006 (JD 2454100.5) | semimajor=388.200 Gm (2.595 AU) | perihelion=295.717 Gm (1.977 AU) | aphelion=480.683 Gm (3.213 AU) | eccentricity=0.238 | period=1526.839 d (4.18 a) | inclination=8.072° | asc_node=193.478° | arg_peri=103.648° | mean_anomaly=267.781° | dimensions=113.2 km[1] | mass={{nowrap|(4.61 ± 0.00) × 1018 kg}} | density=6.00 ± 1.31 g/cm3 | rotation=18.1 hr[1] | spectral_type=P[1] | abs_magnitude=8.31[1] | albedo=0.065[1][2] }} Melete ({{IPAc-en|ˈ|m|ɛ|l|ᵻ|t|iː}} {{Respell|MEL|i-tee}}; minor planet designation: 56 Melete) is a large and dark main belt asteroid. It is a rather unusual P-type asteroid, probably composed of organic rich silicates, carbon and anhydrous silicates, with possible internal water ice. Melete was discovered by Hermann Goldschmidt from his balcony in Paris, on September 9, 1857. It orbit was computed by E. Schubert, who named it after Melete, the Muse of meditation in Greek mythology.[3] It was originally confused for 41 Daphne before it was confirmed not to be by its second sighting on August 27, 1871.[4] In 1861, the brightness of 56 Melete was shown to vary by German astronomer Friedrich Tietjen.[11] To date, two stellar occultations by Melete have been observed successfully (in 1997 and again in 2002).{{citation needed|date=December 2010}} Melete has been studied by radar.[5] Photometric observations of this asteroid at the Palmer Divide Observatory in Colorado Springs, Colorado in 2007 gave a light curve with a period of 18.151 ± 0.002 hours and a brightness variation of 0.15 ± 0.02 in magnitude. This result is in agreement with a period of 18.1 hours independently reported in 1993 and 2007.[13] References1. ^1 2 3 4 {{cite web |type=2011-07-01 last obs |title=JPL Small-Body Database Browser: 56 Melete |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=56 |publisher=Jet Propulsion Laboratory |accessdate=2012-01-26}} See Table 1.[6][7]2. ^Asteroid Data Sets {{webarchive|url=https://www.webcitation.org/5mqof7ROl?url=http://www.psi.edu/pds/resource/albedo.html |date=2010-01-17 }} 3. ^{{cite book|last=Schmadel|first=Lutz D.|title=Dictionary of Minor Planet Names|url=https://books.google.com/books?id=KWrB1jPCa8AC&pg=PA20|year=2003|publisher=Springer Science & Business Media|isbn=978-3-540-00238-3|page=20}} 4. ^{{cite book|title=Appletons' annual cyclopaedia and register of important events of the year: 1862|year=1863|publisher=D. Appleton & Company|location=New York|page=173|url=https://archive.org/stream/1862appletonsan02newyuoft#page/n180/mode/1up}} 5. ^{{cite web |title=Radar-Detected Asteroids and Comets |publisher=NASA/JPL Asteroid Radar Research |url=http://echo.jpl.nasa.gov/asteroids/ |accessdate=2012-01-23}} 6. ^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= .}} 7. ^1 {{Citation | last1 = Harwood | first1 = Margaret | title = Variations in the Light of Asteroids | work = Harvard College Observatory Circular | volume = 269 | pages = 1–15 |date=December 1924 | bibcode = 1924HarCi.269....1H | postscript= .}} }} External links
7 : Background asteroids|Discoveries by Hermann Goldschmidt|Minor planets named from Greek mythology|Named minor planets|P-type asteroids (Tholen)|Xk-type asteroids (SMASS)|Astronomical objects discovered in 1857 |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。