| 词条 | 95 Arethusa |
| 释义 |
| minorplanet=yes | background=#D6D6D6 | name=95 Arethusa | image = 95Arethusa (Lightcurve Inversion).png | image_size = 265 | caption=A three-dimensional model of 95 Arethusa based on its light curve. | discoverer=Karl Theodor Robert Luther | discovered=23 November 1867 | mpc_name=(95) Arethusa | alt_names= | pronounced ={{IPAc-en|ˌ|ær|ə|ˈ|θj|uː|z|ə}} {{Respell|ARR|ə|THEW|zə}} | mp_category=Main belt | epoch=31 July 2016 (JD 2457600.5) | semimajor={{Convert|3.06457|AU|Gm|abbr=on}} | perihelion={{Convert|2.59737|AU|Gm|abbr=on}} | aphelion={{Convert|3.53176|AU|Gm|abbr=on|lk=on}} | eccentricity=0.15245 | period=5.36 yr (1959.5 d) | inclination=12.9955° | asc_node=243.038° | arg_peri=154.196° | mean_anomaly=250.185° | avg_speed=16.91 km/s | dimensions={{val|136.04|10.1|ul=km}} [1] 136.04 km{{JPL|95|†}} 147 ± 32 km [1] | mass=2.6{{e|18}} kg | density= | surface_grav=0.0380 m/s² | escape_velocity=0.0719 km/s | rotation={{Convert|8.705|h|d|abbr=on|lk=on}} | spectral_type=C | abs_magnitude=8.0 | albedo={{val|0.0698|0.012}} [1] 0.070 [2] | mean_motion={{Deg2DMS|0.183718|sup=ms}} / day | orbit_ref= [3] | observation_arc=143.53 yr (52424 d) | uncertainty=0 }} Arethusa ({{IPAc-en|ˌ|ær|ə|ˈ|θj|uː|z|ə}} {{Respell|ARR|ə|THEW|zə}}; minor planet designation: 95 Arethusa) is a large main-belt asteroid. Its coloring is dark, its composition carbonaceous and primitive. It was discovered by Robert Luther on November 23, 1867, and named after one of the various Arethusas in Greek mythology. Arethusa has been observed occulting a star three times: first on February 2, 1998, and twice in January 2003. References1. ^{{cite journal |display-authors=6 |last=Ďurech |first=Josef |author2=Kaasalainen, Mikko |author3=Herald, David |author4=Dunham, David |author5=Timerson, Brad |author6=Hanuš, Josef |author7=Frappa, Eric |author8=Talbot, John |author9=Hayamizu, Tsutomu |author10=Warner, Brian D. |author11=Pilcher, Frederick |author12=Galád, Adrián |title=Combining asteroid models derived by lightcurve inversion with asteroidal occultation silhouettes |journal=Icarus |volume=214 |issue=2 |pages=652–670 |date=2011 |url=http://astro.troja.mff.cuni.cz/projects/asteroids3D/download/durech_et_al_2011_occ_paper.pdf |doi=10.1016/j.icarus.2011.03.016 |arxiv=1104.4227 |bibcode=2011Icar..214..652D}} 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. ^1 2 {{Cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=95;cad=1 |title=95 Arethusa |work=JPL Small-Body Database |publisher=NASA/Jet Propulsion Laboratory |access-date=12 May 2016}} External links
8 : Background asteroids|Discoveries by Robert Luther|Minor planets named from Greek mythology|Named minor planets|C-type asteroids (Tholen)|Ch-type asteroids (SMASS)|Astronomical objects discovered in 1867|Objects observed by stellar occultation |
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