Enceladus (bulan): Perbezaan antara semakan
Kandungan dihapus Kandungan ditambah
kotak maklumat |
|||
Baris 1:
{{Infobox planet
|
| pronounced = {{IPAc-en|ɛ|n|ˈ|s|ɛ|l|ə|d|ə|s}} {{respell|en|SEL|ə-dəs}}
| alt_names = Zuhal II
| adjectives =
| image = [[Fail:Enceladus from Voyager.jpg|250px]]
| caption = Bulan Enceladus dilihat daripada ''Voyager'' 2, 1981
| note = yes
| discovery = yes
| discoverer = [[William Herschel]]
| discovered = 28 Ogos [[1789]] <ref name="CosmoVisions">{{cite web |first=Serge |last=Jodra |year=2004 |url=http://www.cosmovisions.com/SaturneChrono02.htm |title=Imago Mundi – La Découverte des satellites de Saturne |language=French |trans_title= |publisher=CosmoVisions.com |accessdate=2009-03-13}}</ref>
| semimajor = {{val|237948|u=km}}<!-- Computed using the http://cfa-www.harvard.edu/iau/NatSats/NaturalSatellites.html µ value -->
| eccentricity = {{val|0.0047}} <ref name="Porco Helfenstein et al. 2006" />
| period = {{val|1.370218|u=days}}<ref name="solarsys">[http://library.thinkquest.org/28327/html/universe/solar_system/planets/saturn/moons/enceladus.html]. Dicapai 22 Mac 2007.</ref>
| inclination = 0.019° (daripada khatulistiwa Zuhal)
| satellite_of = [[Zuhal]]
| physical_characteristics = yes
| dimensions = 513.2 × 502.8 × 496.6 km <ref name="Roatsch et al. 2009" />
| mean_radius = {{val|252.1|0.2|u=km}} <ref name="Roatsch et al. 2009" /> ({{val|0.0395}} Bumi, {{val|0.1451}} Bulan)
| mass = {{val|1.08022|0.00101|e=20|u=kg}} <ref name="Jacobson Antreasian et al. 2006" /> (1.8{{e|-5}} Bumi)
| density = {{val|1.609|0.005|u=g/cm³}} <ref name="Roatsch et al. 2009" />
| surface_grav = {{Gr|0.108|252.1|3}} [[Pecutan|m/s²]] ({{val|0.0113}} [[daya g|g]]) <!-- Calculated from mass figure above using mean equatorial radius -->
| escape_velocity = {{V2|0.108|252.1|3}} km/s (860.4 km/j) <!-- Calculated from mass figure above. -->
| rotation = [[Putaran segerak|Segerak]]
| axial_tilt = Sifar
| albedo = {{val|1.375|0.008}} ([[Albedo geometri|geometri]]) atau 0.99 ([[Albedo Bond|Bond]]) <ref name="Verbiscer et al. 2007" />
| magnitude = 11.7 <ref name="Observatorio ARVAL" />
| temperatures = yes
| temp_name1 = [[Kelvin]]<ref name="Spencer">{{cite journal |doi=10.1126/science.1121661 |title=Cassini Encounters Enceladus: Background and the Discovery of a South Polar Hot Spot |year=2006 |journal=Science |volume=311 |pages=1401–5 |pmid=16527965 |issue=5766 |bibcode=2006Sci...311.1401S |author-separator=, |display-authors=2 |last=Spencer |first= |last2= |first2=J. R. |last3=Segura |first3=M |last4=Flasar |first4=FM |last5=Mamoutkine |first5=A |last6=Romani |first6=P |last7=Buratti |first7=BJ |last8=Hendrix |first8=AR |last9=Spilker |first9=LJ |last10= |first10=RM}}</ref>
| min_temp_1 = 32.9 [[kelvin|K]]
| mean_temp_1 = 75 K
| max_temp_1 = 145 K
| atmosphere = yes
| surface_pressure = surih, keragaman ruang ketara<ref name="Dougherty">{{cite journal |doi=10.1126/science.1120985 |title=Identification of a Dynamic Atmosphere at Enceladus with the Cassini Magnetometer |year=2006 |journal=Science |volume=311 |pages=1406–9 |pmid=16527966 |issue=5766 |bibcode=2006Sci...311.1406D |author-separator=, |display-authors=2 |last=Dougherty |first= |last2= |first2=M. K. |last3=Neubauer |first3=FM |last4=Russell |first4=CT |last5=Saur |first5=J |last6=Leisner |first6=JS |last7=Burton |first7=ME}}</ref><ref name="Hansen">{{cite journal |doi=10.1126/science.1121254 |title=Enceladus' Water Vapor Plume |year=2006 |journal=Science |volume=311 |pages=1422–5 |pmid=16527971 |issue=5766 |bibcode=2006Sci...311.1422H |author-separator=, |display-authors=2 |last=Hansen |first= |last2= |first2=C. J. |last3=Stewart |first3=AI |last4=Colwell |first4=J |last5=Hendrix |first5=A |last6=Pryor |first6=W |last7=Shemansky |first7=D |last8=West |first8=R}}</ref>
| atmosphere_composition = 91% [[wap air]]<br>4% [[nitrogen]]<br>3.2% [[karbon dioksida]]<br>1.7% [[metana]] <ref name="Waite">{{cite journal |doi=10.1126/science.1121290 |title=Cassini Ion and Neutral Mass Spectrometer: Enceladus Plume Composition and Structure |year=2006 |journal=Science |volume=311 |pages=1419–22 |pmid=16527970 |issue=5766 |bibcode=2006Sci...311.1419W |author-separator=, |display-authors=2 |last=Waite |first= |last2= |first2=J. H. |last3=Ip |first3=WH |last4=Cravens |first4=TE |last5=McNutt Jr |first5=RL |last6=Kasprzak |first6=W |last7=Yelle |first7=R |last8=Luhmann |first8=J |last9=Niemann |first9=H |last10= |first10=D |last11= |first11=B |last12= |first12= |last13= |first13=J |last14= |first14=WL}}</ref>
}}
'''Enceladus''' ''(en-sel'-ə-dəs'', [[Alfabet Fonetik Internasional|IPA]] {{IPA|/ɛnˈsɛl ə dəs/}}, Greek ''Εγκέλαδος)'' ialah [[satelit semula jadi|bulan]] [[Zuhal]] terbesar ke-6, ditemui pada 1789 oleh [[William Herschel]] [http://planetarynames.wr.usgs.gov/append7.html]. Walaupun saiznya kecil, Enceladus mempunya jenis permukaan yang pelbagai dari permukaan berkawah yang banyak dan tua hingga [[bentuk muka bumi]] yang dibentuk oleh tektonik muda. [[Peluahgasan]] di kutub selatan, permukaan yang berusia muda, dan kehadiran pengeluaran haba dalaman menandakan bahawa Enceladus, dan daerah kutub selatan khususnya, masih aktif secara geologi kini. Enceladus ialah salah satu daripada tiga jasad sistem suria (bersama dengan bulan [[Jupiter]] [[Io]] dan bulan [[Neptun]] [[Triton]] yang letusan aktifnya dapat diamati.
Baris 76 ⟶ 40:
Pada [[9 Mac]] [[2006]], saintis melaporkan dalam jurnal [[Science (jurnal)|Science]] bahawa [[Cassini-Huygens|pesawat Cassini]] telah menemui bukti kewujudan air di Enceladus. [http://www.msnbc.msn.com/id/11736311/]
== Rujukan ==
{{reflist}}
== Pautan luar ==
=== Maklumat am ===
| |||