Regulus

Regulus A/B/C
	; Regulus is located at the lower right on this map of the constellation.
Dhata pangamatan; Epos J2000
Rasi lintang	Leo
Asensio rekta	A: 10h 08 min 22.3s BC: 10h 08 min 12.8/14s
Dhéklinasi	A: +11° 58' 02" BC: +11° 59' 48"
Magnitudo katon (V)	1.35/8.14/13.5
Ciri-ciri
Kelas spektrum	B7 V/K1-2 V/M5 V
Indèks warna U-B	−0.36/0.54
Indèks warna B-V	−0.11/0.87
Jinis variabel	Slightly
Astrometri
Kacepetan radhial (Rv)	+5.9 km/s
Gerak dhiri (μ)	RA: 249 mas/taun ; Dek.: 2 mas/taun
Paralaks (π)	42.09 ± 0.79 mas
Let	77 ± 1 tc ; (23.8 ± 0.4 pc)
Magnitudo mutlak (MV)	−0.52/4.2/9.5
Detail
Massa	3.5/0.8/0.2 M☉
Radhius	3.15–4.15/0.5/? R☉
Luminositas	150/0.31 L☉
Suhu	10,300–15,400/? K
Rotasi	315 km/s. (15.9 hours)/?
Umur	5 × 107 taun
Pamènèhan jeneng liya
	Alpha Leonis, 32 Leo, Cor Leonis, Basilicus, Lion’s Heart, Rex, Kalb al Asad, Kabeleced, GJ 9316, HR 3982, BD +12° 2149/2147, HD 87901/87884, GCTP 2384.00, LTT 12716/12714, SAO 98967/98966, FK5 380, HIP 49669, TD1 14585.
Réferènsi database
SIMBAD	data ;

Regulus (α Leo / α Leonis / Alpha Leonis) yaiku lintang ingkang padhang piyambak ning rasi Leo lan kagolong lintang kang cemerlang ning langit nalika bengi. Lintang iki ana ning jarak 77.5 taun cahya saka Bumi. Regulus kagolong ning sistem multi bintang tuladhané liyané yaiku papat lintang kang nggabung ning rong pasang bintang. Regulus A yaiku lintang biru keputihan lan pasanganné kang durung diteliti, bisa baé bintang katai putih (white dwarf).^[1] Ing ngarepé Regulus A ana pasangané yaikuRegulus B lan Regulus C, kang kagolong lintang remeng.

Observasi

Regulus ana ing garis ekliptik, lan bakal nglakoni okultasi reguler karo Bulan. Okultasi karo Merkurius lan Venus uga bisa kedaden nanging jarang. Okultasi Regulus déning planit Venus kedaden nalika tanggal 7 Juli 1959. Okultasi sawisé iku dikira-kira bakal kedaden ing tanggal 1 Oktober 2044. Matahari tekan ing titik paling cedhak karo Regulus nganti tanggal 23 Agustus nggal taun.

Regulus duwé massa 3.5 kali Matahari lan kagolong lintang kang umuré esih enom, yaiku kira-kira pirangatus yuta taun. Lintang iki mubengé rikat banget, yaiku 15.9 jam, njalari brubahé warna kang rikat.^[2]

Visibilitas

Regulus A yaiku lintang kang cemerlang ning langit nalika bengi karoan magnitudo kang nengsemaké. Regulus B kagolong lintang katai kelas K2 kang katon luwih remeng dibandingaké karo komponèn A. Komponèn akir, Regulus C, yaiku lintang abang cilik lan paling remeng ning watarané telung komponèn sarta saiki lintang iki lagi prosès obeservasi

Ètimologi

Rēgulus asalé saka basa Latin kang artiné pangeran utawa raja cilik. Masarakat Yunani nyebuté Basiliscus kang artiné pada. Jeneng liyané kanggo bintang iki yaiku:

jeneng liya	asal basa	artiné
Qalb Al Asad, Kabelaced / Cor Leōnis	Arab / Latin	jantung (sang singa)
Rex / Malikiyy	Latin / Arab	raja
軒轅十四 / Xuanyuanshísì	China	lintang kaping patbelas saka rasi Xuanyuan^[3]
軒轅大星 / Xuanyuandàxīng	China	bintang besar ning rasi Xuanyuan^[4]
皇后 / Huánghòu	China	(bintang) kang berkuasa lan nyumunar^[4]
女主 / Nǚzhu	China	pelayan wanita ^[4]

Saliyané rasi Leo, lintang iki uga kagolong anggota saka rasi utawa asterisma:

jeneng rasi / asterisma	asal	artiné	anggota liyané
軒轅十 / Xuanyuan	China	Xuanyuan	10 UMa, HD 77912, 38 Lyn, α Lyn, 15 Leo, κ Leo, λ Leo, ε Leo, μ Leo, ζ Leo, γ Leo, η Leo, ο Leo, ρ Leo, 31 Leo
Sickle		sabit	γ Leo, ε Leo, ζ Leo, η Leo, μ Leo
Al Jabhah	Arab	kepala pérangan depan	γ Leo, ζ Leo, η Leo, μ Leo
Magha (मघा)	(agama) Hindhu	kang agung	ora ana
UR.GU.LA	Mesopotamia	raja	tidak ada
Sky Dragon^[5]		naga di langit	α Aql, α Aur, α Boo, α CMa, α CMi, α Cyg, β Gem, α Gem, α Lyr, β Or, α Or, α PsA, α Sco, α Tau, α Vir

Rujukan

↑ Gies, D.R.; et al. (2008). "A Spectroscopic Orbit for Regulus". The Astrophysical Journal. 682 (2): L117–L120. Bibcode:2008ApJ...682L.117G. doi:10.1086/591148. {{cite journal}}: Explicit use of et al. in: |author= (pitulung)
↑ McAlister, H. A., ten Brummelaar, T. A.; et al. (2005). "First Results from the CHARA Array. I. An Interferometric and Spectroscopic Study of the Fast Rotator Alpha Leonis (Regulus)". The Astrophysical Journal. 628: 439–452. doi:10.1086/430730. {{cite journal}}: Explicit use of et al. in: |author= (pitulung)CS1 maint: multiple names: authors list (link)
↑ salah sawijining rasi bintang miturut bangsa Cina
↑ ^a ^b ^c http://www.chinese-tools.com/tools/sinograms.html
↑ "Archive copy". Diarsip saka sing asli ing 2008-05-13. Dibukak ing 2012-11-11.{{cite web}}: CS1 maint: archived copy as title (link)

Fred Schaaf, “Horrorfications of the Lion’s heart,” Sky & Telescope, April 2006.

Pranala njaba

Portrait of a Star on the Edge
Egg-Shaped Regulus is Spinning Fast
Regulus as Astronomy Picture of the Day of 19th june 2006
"Regulus 3". SolStation. Dibukak ing December 1 2005. {{cite web}}: Check date values in: |accessdate= (pitulung); Unknown parameter |dateformat= ignored (pitulung)

Artikel iki minangka artikel rintisan. Kowé bisa ngéwangi Wikipédia ngembangaké.

[1] Gies, D.R.; et al. (2008). "A Spectroscopic Orbit for Regulus". The Astrophysical Journal. 682 (2): L117–L120. Bibcode:2008ApJ...682L.117G. doi:10.1086/591148. {{cite journal}}: Explicit use of et al. in: |author= (pitulung)

[apj628-2] McAlister, H. A., ten Brummelaar, T. A.; et al. (2005). "First Results from the CHARA Array. I. An Interferometric and Spectroscopic Study of the Fast Rotator Alpha Leonis (Regulus)". The Astrophysical Journal. 628: 439–452. doi:10.1086/430730. {{cite journal}}: Explicit use of et al. in: |author= (pitulung)CS1 maint: multiple names: authors list (link)

[3] salah sawijining rasi bintang miturut bangsa Cina

[sb0-4] ttp://www.chinese-tools.com/tools/sinograms.html

[5] "Archive copy". Diarsip saka sing asli ing 2008-05-13. Dibukak ing 2012-11-11.{{cite web}}: CS1 maint: archived copy as title (link)

[1]

[2]

[3]

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[5]

Dhata pangamatan Epos J2000
Regulus is located at the lower right on this map of the constellation.
Rasi lintang	Leo
Asensio rekta	A: 10h 08 min 22.3s BC: 10h 08 min 12.8/14s
Dhéklinasi	A: +11° 58' 02" BC: +11° 59' 48"
Magnitudo katon (V)	1.35/8.14/13.5
Ciri-ciri
Kelas spektrum	B7 V/K1-2 V/M5 V
Indèks warna U-B	−0.36/0.54
Indèks warna B-V	−0.11/0.87
Jinis variabel	Slightly
Astrometri
Kacepetan radhial (R_v)	+5.9 km/s
Gerak dhiri (μ)	RA: 249 mas/taun Dek.: 2 mas/taun
Paralaks (π)	42.09 ± 0.79 mas
Let	77 ± 1 tc (23.8 ± 0.4 pc)
Magnitudo mutlak (M_V)	−0.52/4.2/9.5
Detail

Massa	3.5/0.8/0.2 M_☉
Radhius	3.15–4.15/0.5/? R_☉
Luminositas	150/0.31 L_☉
Suhu	10,300–15,400/? K
Rotasi	315 km/s. (15.9 hours)/?
Umur	5 × 10⁷ taun

Pamènèhan jeneng liya
Alpha Leonis, 32 Leo, Cor Leonis, Basilicus, Lion’s Heart, Rex, Kalb al Asad, Kabeleced, GJ 9316, HR 3982, BD +12° 2149/2147, HD 87901/87884, GCTP 2384.00, LTT 12716/12714, SAO 98967/98966, FK5 380, HIP 49669, TD1 14585.
Réferènsi database
SIMBAD	data