K2-18: Perbedaan antara revisi

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Membalikkan revisi 16084075 oleh 202.67.45.3 (bicara)
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(3 revisi perantara oleh 2 pengguna tidak ditampilkan)
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{{short description|Bintang katai merah}}
{{Starbox begin}}
{{Starbox image|image=[[Berkas:Esa-hubble-k2-18a_impression.jpg|250px]]|caption=Artist'sKesan impressionSeniman ofmengenai thesistem K2-18 system, withdengan K2-18 ondi leftkiri, K2-18b ondi rightkanan, anddan K2-18c betweentengah.|credit=ESA/Hubble}}
{{Starbox image|image={{Location mark
|image=Leo constellation map.svg|alt=|float=center|width=260
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|mark=Red circle.svg|mark_width=10|mark_link=δ Leonis
|x=215|y=724
}}|caption=ApproximatePerkiraan two-dimensionallokasi locationdua ofdimensi the starbintang (indalam redlingkaran circlemerah); [[Sigma Leonis]] isadalah thebintang nearestterang bright starterdekat, whichyang isberada indi aarah southerly directionselatan, and the boundarydan ofbatas Virgo isjuga similarlysangat farjauh.}}
{{Starbox observe|constell=[[Leo (constellationrasi 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/>}}
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{{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 layaklaik huni]] K2-18, dan satunya lagi adalah sebuah eksoplanet bernama [[K2-18c]], yang sudah dikonfirmasi.<ref name=":0" />
 
== Planet ==
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== 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>