Lihat sumber Gliese 445

{{Starbox begin}}
{{Starbox image|image=[[File:PIA17461 Heading toward Gliese 445 (annotated).jpg|320px]]|caption=Gambar dari of AC +79 3888 (dibulatkan), juga dikenal dengan Gliese 445, terletak 17.1 tahun cahaya dari Bumi|credit=Caltech/Palomar}}
{{Starbox observe|epoch=[[J2000.0]]|equinox=[[J2000.0]] ([[International Celestial Reference System|ICRS]])|constell=[[Camelopardalis]]|ra={{RA|11|47|41.3885}}<ref name=dr2/>|dec={{DEC|+78|41|28.179}}<ref name=dr2/>|appmag_v=10.80<ref name=ucac2>{{cite journal |bibcode=2004yCat.1294....0U |title=VizieR Online Data Catalog: The UCAC2 Bright Star Supplement (Urban+, 2006) |last1=Urban |first1=S. E. |last2=Zacharias |first2=N. |last3=Wycoff |first3=Observatory G. L. U. S. Naval |last4=Washington |first4=2004-2006 D. C. |journal=VizieR On-line Data Catalog |year=2004 }}</ref>}}
{{Starbox character|class=M4.0Ve<ref name=lepine2013>{{cite journal |bibcode=2013AJ....145..102L |title=A Spectroscopic Catalog of the Brightest (J < 9) M Dwarfs in the Northern Sky |last1=Lépine |first1=Sébastien |last2=Hilton |first2=Eric J. |last3=Mann |first3=Andrew W. |last4=Wilde |first4=Matthew |last5=Rojas-Ayala |first5=Bárbara |last6=Cruz |first6=Kelle L. |last7=Gaidos |first7=Eric |journal=The Astronomical Journal |year=2013 |volume=145 |issue=4 |pages=102 |doi=10.1088/0004-6256/145/4/102 |arxiv=1206.5991 |s2cid=117144290 }}</ref>|b-v=1.572<ref name=ucac2/>|v-i=2.53<ref name=ucac2/>|v-r=|r-i=}}
{{Starbox astrometry|radial_v=−111.707<ref name=dr2>{{cite DR2|1129149723913123456}}</ref>|prop_mo_ra=748.111<ref name=dr2/>|prop_mo_dec=480.804<ref name=dr2/>|parallax=190.3251|p_error=0.0194|parallax_footnote=<ref name="GaiaEDR3">{{Cite Gaia EDR3|1129149723913123456}}</ref>|absmag_v=12.227<ref name=houdebine2019>{{cite journal |bibcode=2019AJ....158...56H |title=The Mass-Activity Relationships in M and K Dwarfs. I. Stellar Parameters of Our Sample of M and K Dwarfs |last1=Houdebine |first1=Éric R. |last2=Mullan |first2=D. J. |last3=Doyle |first3=J. G. |last4=de la Vieuville |first4=Geoffroy |last5=Butler |first5=C. J. |last6=Paletou |first6=F. |journal=The Astronomical Journal |year=2019 |volume=158 |issue=2 |pages=56 |doi=10.3847/1538-3881/ab23fe |arxiv=1905.07921 |s2cid=159041104 |doi-access=free }}</ref>}}
{{Starbox detail|mass=0.14<ref name=gaidos2014>{{cite journal |bibcode=2014MNRAS.443.2561G |title=Trumpeting M dwarfs with CONCH-SHELL: A catalogue of nearby cool host-stars for habitable exoplanets and life |last1=Gaidos |first1=E. |last2=Mann |first2=A. W. |last3=Lépine |first3=S. |last4=Buccino |first4=A. |last5=James |first5=D. |last6=Ansdell |first6=M. |last7=Petrucci |first7=R. |last8=Mauas |first8=P. |last9=Hilton |first9=E. J. |journal=Monthly Notices of the Royal Astronomical Society |year=2014 |volume=443 |issue=3 |pages=2561 |doi=10.1093/mnras/stu1313 |arxiv=1406.7353 |s2cid=119234492 }}</ref>|radius=0.285<ref name=houdebine2019/>|temperature=3,507<ref name=dr2/>|luminosity=0.008<ref name=mcdonald2017>{{cite journal |bibcode=2017MNRAS.471..770M|title=Fundamental parameters and infrared excesses of Tycho-Gaia stars|last1=McDonald|first1=I.|last2=Zijlstra|first2=A. A.|last3=Watson|first3=R. A.|journal=Monthly Notices of the Royal Astronomical Society|year=2017|volume=471|issue=1|pages=770|doi=10.1093/mnras/stx1433|arxiv=1706.02208|s2cid=73594365}}</ref>|metal_fe={{val|-0.30}}<ref name=houdebine2019/>|gravity=4.72<ref name=mcdonald2017/>|rotational_velocity=<2.5<ref name=stelzer2013>{{cite journal |bibcode=2013MNRAS.431.2063S |title=The UV and X-ray activity of the M dwarfs within 10 pc of the Sun |last1=Stelzer |first1=B. |last2=Marino |first2=A. |last3=Micela |first3=G. |last4=López-Santiago |first4=J. |last5=Liefke |first5=C. |journal=Monthly Notices of the Royal Astronomical Society |year=2013 |volume=431 |issue=3 |pages=2063 |doi=10.1093/mnras/stt225 |arxiv=1302.1061 |s2cid=119193975 }}</ref>}}
{{Starbox catalog|names=Gliese&nbsp;445, Gl&nbsp;445, G&nbsp;254-29, AC+79 3888, [[Hipparcos Catalogue|HIP]]&nbsp;57544, [[Luyten Five-Tenths catalogue|LFT]]&nbsp;849, [[Luyten Half-Second catalogue|LHS]]&nbsp;2459, [[Luyten Two-Tenths catalogue|LTT]]&nbsp;13235, [[New Luyten Two-Tenths catalogue|NLTT]]&nbsp;28539, [[General Catalogue of Trigonometric Parallaxes|PLX]]&nbsp;2722<ref name=simbad>{{cite simbad|title=GJ 445|access-date=July 29, 2008}}</ref>}}
{{Starbox reference|Simbad=LHS+2459|ARICNS=00910}}
{{Starbox image|image={{Location map|100x100|AlternativeMap=Camelopardalis_constellation_map.svg
|alt=Gliese 445 is located in the constellation Camelopardalis
|caption=Location of Gliese 445 in the constellation [[Camelopardalis (constellation)|Camelopardalis]]|border=infobox|mark=Red_pog.png|width=320
|label=Gliese 445
|lat=82.9
|long=23.1
}}|caption=}}
{{Starbox end}}'''Gliese 445''' ('''Gl 445''' atau '''AC +79 3888''') adalah sebuah [[bintang]] [[deret utama]] [[Klasifikasi bintang|Tipe M]] yang terletak pada bagian utara dari konstelasi [[Camelopardalis]].

== Lokasi ==
[[File:Near-stars-past-future-en.svg|pra=https://en.wiki-indonesia.club/wiki/File:Near-stars-past-future-en.svg|kiri|jmpl|261x261px|Jarak dari [[Daftar bintang terdekat|bintang terdekat]] dari 20.000 tahun lalu hingga 80.000 tahun di masa depan. Gliese 445 menjadi bintang terdekat sekitar 40 hingga 50.000 tahun mendatang.]]
Saat ini, bintang ini terletak pafa 17,1 [[tahun cahaya]] dari Bumi, dan memiliki [[magnitudo semu]] yaitu 10,8. Bintang ini dapat dilihat dari bagian utara dari [[Garis Balik Utara]] sepanjang malam, namun harus dengan bantuan teleskop.<ref name="Littmann">{{cite book|author=Mark Littmann|date=1 January 2004|url=https://books.google.com/books?id=RoJMadct4TQC|title=Planets Beyond: Discovering the Outer Solar System|publisher=Courier Corporation|isbn=978-0-486-43602-9}}</ref> Karena bintang ini merupakan sebuah [[katai merah]] dengan massa seperempat hingga sepertiga massa [[Matahari]], ilmuwan mempertanyakan mengenai kemampuan Gliese 445 untuk menyandang sistem yang dapat menyokong kehidupan. Selain itu, bintang ini merupakan sumber [[sinar x]] yang diketahui.<ref name="Schmitt">{{cite journal|author1=Schmitt JHMM|author2=Fleming TA|author3=Giampapa MS|date=September 1995|title=The X-Ray View of the Low-Mass Stars in the Solar Neighborhood|journal=Astrophys. J.|volume=450|issue=9|pages=392–400|bibcode=1995ApJ...450..392S|doi=10.1086/176149|doi-access=free}}</ref>

Dalam 40.000 tahun, [[Voyager 1]] akan melewati Gliese 445 dengan jarak 1.6 dari bintang tersebut.<ref>{{cite web|title=NASA – Voyager - Mission - Interstellar Mission|url=http://voyager.jpl.nasa.gov/mission/interstellar.html|website=[[Jet Propulsion Laboratory]]|access-date=2020-04-03}}</ref>

== Referensi ==
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[[Kategori:Camelopardalis (konstelasi)]]