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Revisi per 21 September 2019 11.04 sunting Retired User 21082022 (bicara \| kontrib) 23.923 suntingan ←Membuat halaman berisi '{{short description\|Bintang katai merah}} {{Starbox begin}} {{Starbox image\|image=250px\|caption=Artist's impression of the K2...' Tag: tanpa kategori [ * ] VisualEditor		Revisi terkini sejak 4 Maret 2021 22.34 sunting balikkan FelixJL111 (bicara \| kontrib) Peninjau otomatis 23.757 suntingan Tidak ada ringkasan suntingan Tag: Suntingan visualeditor-wikitext
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Baris 1: {{short description\|Bintang katai merah}} {{Starbox begin}} {{Starbox image\|image=[[~~File~~Berkas:Esa-hubble-k2-18a_impression.jpg\|250px]]\|caption=~~Artist's~~Kesan ~~impression~~Seniman ofmengenai ~~the~~sistem K2-18 ~~system~~, ~~with~~dengan K2-18 ondi ~~left~~kiri, K2-18b ondi ~~right~~kanan, ~~and~~dan K2-18c ~~between~~tengah.\|credit=ESA/Hubble}} {{Starbox image\|image={{Location mark \|image=Leo constellation map.svg\|alt=\|float=center\|width=260 Baris 7: \|mark=Red circle.svg\|mark_width=10\|mark_link=δ Leonis \|x=215\|y=724 }}\|caption=~~Approximate~~Perkiraan ~~two-dimensional~~lokasi ~~location~~dua ofdimensi ~~the star~~bintang (indalam ~~red~~lingkaran ~~circle~~merah); [[Sigma Leonis]] isadalah ~~the~~bintang ~~nearest~~terang ~~bright star~~terdekat, ~~which~~yang isberada indi aarah ~~southerly direction~~selatan, ~~and the boundary~~dan ofbatas Virgo isjuga ~~similarly~~sangat ~~far~~jauh.}} {{Starbox observe\|constell=[[Leo (~~constellation~~rasi bintang)\|Leo]]\|epoch=J2000.0\|ra={{RA\|11\|30\|14.518}}<ref name=dr2/>\|dec={{DEC\|+07\|35\|18.26}}<ref name=dr2/>\|appmag_v=13.50<ref name=UCAC4/>}} {{Starbox character\|type=[[Katai merah]]\|class=M2.8<ref name=montet2015/>\|variable=}} {{Starbox astrometry\|absmag_v\|radial_v=\|prop_mo_ra={{val\|-80.377}}<ref name=dr2/>\|prop_mo_dec={{val\|-133.142}}<ref name=dr2/>\|parallax=26.2686\|p_error=0.0546\|parallax_footnote=<ref name=dr2/>}} Baris 14: {{Starbox reference\|Simbad=K2-18}} {{Starbox end}} '''K2-18''', juga disebut '''EPIC 201912552''', adalah sebuah [[bintang]] [[katai merah]] yang berjarak 124 tahun cahaya (38 pc) dari bumi, di [[konstelasi]] [[Leo]]. Bintang ini memiliki 2 [[eksoplanet]] yang mengitarinya, salah satunya adalah [[Bumi super]] yang terletak di [[zona ~~layak~~laik huni]] K2-18, dan satunya lagi adalah sebuah eksoplanet bernama [[K2-18c]], yang sudah dikonfirmasi.<ref name=":0" /> == Planet == {{OrbitboxPlanet begin \|name=K2-18 \|table_ref=<ref name=":0" /> \|period_unit=hari \|radius=kilometer \|temperature=}} {{OrbitboxPlanet {{OrbitboxPlanet\|eccentricity=< 0.4700\|exoplanet=[[K2-18c\|c]]\|inclination=\|mass_earth=7.5±1.3\|period=8.962±0.008\|radius_earth=\|semimajor=0.060±0.003}}{{OrbitboxPlanet\|exoplanet=[[K2-18b\|b]]\|mass_earth=8.0±1.9\|semimajor=0.143±0.006\|period=32.9396±0.0001\|eccentricity=<0.43\|inclination=\|radius_earth=2.4±0.2}}{{Orbitbox end}} \|eccentricity=<0.4700 \|exoplanet=[[K2-18c\|c]] \|inclination= \|mass_earth=7.5±1.3 \|period=8.962±0.008 \|radius_earth= \|semimajor=0.060±0.003}} {{OrbitboxPlanet \|exoplanet=[[K2-18b\|b]] \|mass_earth=8.0±1.9 \|semimajor=0.143±0.006 \|period=32.9396±0.0001 \|eccentricity=<0.43 \|inclination= \|radius_earth=2.4±0.2}} {{Orbitbox end}} == Referensi == {{Reflist\|refs= {{Reflist\|refs=<ref name=arturo2017>{{cite journal \|doi=10.3847/1538-4357/aa56c7 \|title=Stellar and Planetary Parameters for K2's Late-type Dwarf Systems from C1 to C5 \|journal=The Astrophysical Journal \|volume=837 \|issue=1 \|pages=72 \|year=2017 \|last1=Martinez \|first1=Arturo O. \|last2=Crossfield \|first2=Ian J. M. \|last3=Schlieder \|first3=Joshua E. \|last4=Dressing \|first4=Courtney D. \|last5=Obermeier \|first5=Christian \|last6=Livingston \|first6=John \|last7=Ciceri \|first7=Simona \|last8=Peacock \|first8=Sarah \|last9=Beichman \|first9=Charles A. \|last10=Lépine \|first10=Sébastien \|last11=Aller \|first11=Kimberly M. \|last12=Chance \|first12=Quadry A. \|last13=Petigura \|first13=Erik A. \|last14=Howard \|first14=Andrew W. \|last15=Werner \|first15=Michael W. \|bibcode=2017ApJ...837...72M \|arxiv=1701.00588 }}</ref>▼ ▲~~{{Reflist\|refs=~~<ref name=arturo2017>{{cite journal \|doi=10.3847/1538-4357/aa56c7 \|title=Stellar and Planetary Parameters for K2's Late-type Dwarf Systems from C1 to C5 \|journal=The Astrophysical Journal \|volume=837 \|issue=1 \|pages=72 \|year=2017 \|last1=Martinez \|first1=Arturo O. \|last2=Crossfield \|first2=Ian J. M. \|last3=Schlieder \|first3=Joshua E. \|last4=Dressing \|first4=Courtney D. \|last5=Obermeier \|first5=Christian \|last6=Livingston \|first6=John \|last7=Ciceri \|first7=Simona \|last8=Peacock \|first8=Sarah \|last9=Beichman \|first9=Charles A. \|last10=Lépine \|first10=Sébastien \|last11=Aller \|first11=Kimberly M. \|last12=Chance \|first12=Quadry A. \|last13=Petigura \|first13=Erik A. \|last14=Howard \|first14=Andrew W. \|last15=Werner \|first15=Michael W. \|bibcode=2017ApJ...837...72M \|arxiv=1701.00588 }}</ref> <ref name=benneke2017>{{cite journal \|doi=10.3847/1538-4357/834/2/187 \|title=Spitzer Observations Confirm and Rescue the Habitable-zone Super-Earth K2-18b for Future Characterization \|journal=The Astrophysical Journal \|volume=834 \|issue=2 \|pages=187 \|year=2017 \|last1=Benneke \|first1=Björn \|last2=Werner \|first2=Michael \|last3=Petigura \|first3=Erik \|last4=Knutson \|first4=Heather \|last5=Dressing \|first5=Courtney \|last6=Crossfield \|first6=Ian J. M. \|last7=Schlieder \|first7=Joshua E. \|last8=Livingston \|first8=John \|last9=Beichman \|first9=Charles \|last10=Christiansen \|first10=Jessie \|last11=Krick \|first11=Jessica \|last12=Gorjian \|first12=Varoujan \|last13=Howard \|first13=Andrew W. \|last14=Sinukoff \|first14=Evan \|last15=Ciardi \|first15=David R. \|last16=Akeson \|first16=Rachel L. \|bibcode=2017ApJ...834..187B \|arxiv=1610.07249 }}</ref>