Zeta Leonis
Zeta Leonis (ζ Leo / ζ Leonis) adalah salah satu bintang di rasi Leo. Bintang ini adalah bintang dengan kelas spektrum F0 III[3][4] dan memiliki magnitudo tampak 3,33[2] serta berada pada jarak 274 tahun cahaya (84 parsec) dari Matahari.[1]
 Lokasi Zeta Leonis (dilingkari) | |
| Data pengamatan Epos J2000 Ekuinoks J2000 | |
|---|---|
| Rasi bintang | Leo |
| Asensio rekta | 10j 16m 41,41597d[1] |
| Deklinasi | +23° 25′ 02,3221″[1] |
| Magnitudo tampak (V) | 3,33[2] |
| Ciri-ciri | |
| Kelas spektrum | F0 III[3][4] |
| Indeks warna U−B | +0,07[2] |
| Indeks warna B−V | +0,30[2] |
| Jenis variabel | Suspected |
| Astrometri | |
| Kecepatan radial (Rv) | −15,6[5] km/s |
| Gerak diri (μ) | RA: +18,39[1] mdb/thn Dek.: -6,84[1] mdb/thn |
| Paralaks (π) | 11,90±0,18[1] mdb |
| Jarak | 274 ± 4 tc (84 ± 1 pc) |
| Magnitudo mutlak (MV) | −1,19[6] |
| Detail | |
| Massa | 3[7] M☉ |
| Radius | 6[8] R☉ |
| Luminositas | 85[8] L☉ |
| Gravitasi permukaan (log g) | 3,0[8] |
| Suhu | 6.792[8] K |
| Metalisitas [Fe/H] | –0,03[9] |
| Kecepatan rotasi (v sin i) | 72,4[8] km/s |
| Penamaan lain | |
| Referensi basis data | |
| SIMBAD | data |
Etimologi
Bintang ini memiliki nama tradisional Adhafera (Aldhafera, Adhafara), yang berasal dari bahasa Arab الضفيرة al-ðafīrah "kepang di surai (sang singa)". Nama lainnya untuk bintang ini adalah:
| nama lain | asal bahasa | arti |
|---|---|---|
| 軒轅十一 / Xuanyuanshíyī | China | bintang kesebelas pada rasi Xuanyuan[11] |
Selain rasi Leo, bintang ini juga merupakan anggota dari berbagai rasi, asterisma atau kelompok berikut:
| nama rasi / asterisma / kelompok | asal | arti | anggota lainnya |
|---|---|---|---|
| 軒轅十 / Xuanyuan | China | Xuanyuan | 10 UMa, HD 77912, 38 Lyn, α Lyn, 15 Leo, κ Leo, λ Leo, ε Leo, μ Leo, γ Leo, η Leo, α Leo, ο Leo, ρ Leo, 31 Leo |
| Sickle | sabit | α Leo, γ Leo, ε Leo, η Leo, μ Leo | |
| Al Jabhah | Arab | kepala bagian depan | α Leo, γ Leo, η Leo, μ Leo |
| Sirius Supercluster | HD 13594, 5 Aql, δ Aqr, 32 Aqr, β Aur, 45 Boo, χ Cet, α CMa, 6 CMi, δ Col, 29 Com, α CrB, υ CrB, ζ Crt, HD 209515, HD 184960, δ Del, 59 Dra, HD 129798, β Eri, ζ Eri, HD 157740, υ1 Hya, HD 109799, 21 LMi, τ Leo, γ Lep, RR Lyn, α Oph, HD 65810, HD 178428, HD 165185, β Ser, HD 26923, HD 111456, ζ TrA, 37 UMa, β UMa, γ UMa, δ UMa, ε UMa, 78 UMa, ζ UMa, 80 UMa, o Vir, α Vol.[12][13] |
Referensi
- van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752
, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357 - Fernie, J. D. (May 1983), "New UBVRI photometry for 900 supergiants", Astrophysical Journal Supplement Series, 52: 7–22, Bibcode:1983ApJS...52....7F, doi:10.1086/190856
- Montes, D.; et al. (November 2001), "Late-type members of young stellar kinematic groups - I. Single stars", Monthly Notices of the Royal Astronomical Society, 328 (1): 45–63, arXiv:astro-ph/0106537 , Bibcode:2001MNRAS.328...45M, doi:10.1046/j.1365-8711.2001.04781.x
- Garrison, R. F. (December 1993), "Anchor Points for the MK System of Spectral Classification", Bulletin of the American Astronomical Society, 25: 1319, Bibcode:1993AAS...183.1710G, diarsipkan dari versi asli tanggal 2019-06-25, diakses tanggal 2012-02-04
- Wielen, R.; et al. (1999), Sixth Catalogue of Fundamental Stars (FK6). Part I. Basic fundamental stars with direct solutions (35), Astronomisches Rechen-Institut Heidelberg, Bibcode:1999VeARI..35....1W
- Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971 , Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015.
- Kaler, James B., "ADHAFERA (Zeta Leonis)", Stars, University of Illinois, diakses tanggal 2010-05-12
- Massarotti, Alessandro; et al. (January 2008), "Rotational and Radial Velocities for a Sample of 761 HIPPARCOS Giants and the Role of Binarity", The Astronomical Journal, 135 (1): 209–231, Bibcode:2008AJ....135..209M, doi:10.1088/0004-6256/135/1/209
- "zet Leo -- Variable Star", SIMBAD, Centre de Données astronomiques de Strasbourg, diakses tanggal 2010-05-12
- salah satu rasi bintang menurut bangsa Cina
- Eggen, Olin J. (1992). "The Sirius supercluster in the FK5". Astronomical Journal. 104 (4): 1493–1504. doi:10.1086/116334. Diakses tanggal 2007-11-22.
- http://articles.adsabs.harvard.edu/full/1983AJ.....88..642E
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