  Lokasi β Scorpii (dilingkari) | |
| Data pengamatan Epos J2000.0 Ekuinoks J2000.0 | |
|---|---|
| Rasi bintang | Scorpius |
| HR 5984 | |
| Asensio rekta | 16j 05m 26.23198d[1] |
| Deklinasi | –19° 48′ 19.6300″[1] |
| Magnitudo semu (V) | 2.62[2] |
| HR 5985 | |
| Asensio rekta | 16j 05m 26.57128d[1] |
| Deklinasi | –19° 48′ 06.8556″[1] |
| Magnitudo semu (V) | 4.92[2] |
| Ciri-ciri | |
| HR 5984 | |
| Kelas spektrum | B1V[3] (B0.5IV-V + B1.5V)[4] |
| Indeks warna U−B | –0.08[5] |
| Indeks warna B−V | –0.08[5] |
| HR 5985 | |
| Kelas spektrum | B2V[3] |
| Indeks warna U−B | –0.70[5] |
| Indeks warna B−V | –0.02[5] |
| Astrometri | |
| HR 5984 | |
| Kecepatan radial (Rv) | –1.0[6] km/detik |
| Gerak diri (μ) | RA: –5.20[1] mdb/thn Dek.: –24.04[1] mdb/thn |
| Paralaks (π) | 8,07±0,78[1] mdb |
| Jarak | 400 ± 40 tc (120 ± 10 pc) |
| Magnitudo mutlak (MV) | –3.92 / –2.60[7] |
| HR 5985 | |
| Kecepatan radial (Rv) | –3.6[6] km/detik |
| Gerak diri (μ) | RA: –5.07[1] mdb/thn Dec.: –25.87[1] mdb/thn |
| Paralaks (π) | 8,07±0,78[1] mdb |
| Jarak | sekitar 400 tc (sekitar 120 pc) |
| Magnitudo mutlak (MV) | –1.83 (Ea: +0.24)[7] |
| Detail[7] | |
| β Sco Aa | |
| Massa | 15.0 M☉ |
| Radius | 6.3 R☉ |
| Luminositas | 31,600 L☉ |
| Suhu | 28,000 K |
| β Sco Ab | |
| Massa | 10.4 M☉ |
| Radius | 4.0 R☉ |
| Luminositas | 7,900 L☉ |
| Suhu | 26,400 K |
| β Sco C | |
| Massa | 8.2 M☉ |
| Radius | 2.9 R☉ |
| Luminositas | 3,200 L☉ |
| Gravitasi permukaan (log g) | 3.8 |
| Suhu | 24,000 K |
| Kecepatan rotasi (v sin i) | 55 km/detik |
| β Sco Ea | |
| Massa | 3.5 M☉ |
| Radius | 2.4 R☉ |
| Luminositas | 126 L☉ |
| Gravitasi permukaan (log g) | 4.2 |
| Suhu | 13,000 K |
| Kecepatan rotasi (v sin i) | 5 km/detik |
| Usia | 6.3 megatahun |
| Penamaan lain | |
| β1 Sco: BD–19 4307, HD 144217, HIP 78820, HR 5984 | |
| β2 Sco: BD–19 4308, HD 144218, HIP 78821, HR 5985 | |
| Referensi basis data | |
| SIMBAD | β Scorpii |
| β1 Scorpii | |
| β2 Scorpii | |
Beta Scorpii (β Scorpii, disingkat beta Sco, β Sco) adalah sistem bintang ganda di selatan zodiak konstelasi Scorpius. Namanya berasal dari kata tradisional Acrab /ækræb/,[8] meskipun International Astronomical Union sekarang menganggap nama itu untuk merujuk pada komponen β Scorpii Aa.
Lihat pula
Referensi
- 1 2 3 4 5 6 7 8 9 10 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. S2CID 18759600.
{{cite journal}}: Pemeliharaan CS1: Tanggal diterjemahkan otomatis (link) - 1 2 Hoffleit, D.; Warren Jr., W. H. (1991). "Entry for HR 2491". Bright Star Catalogue, 5th Revised Ed. (Preliminary Version). CDS. ID V/50.
- 1 2 Abt, H. A. (1981). "Visual multiples. VII - MK classifications". Astrophysical Journal Supplement Series. 45: 437. Bibcode:1981ApJS...45..437A. doi:10.1086/190719.
- ↑ Holmgren, D.; Hadrava, P.; Harmanec, P.; Koubsky, P.; Kubat, J. (1997). "Search for forced oscillations in binaries. II. β Scorpii A. New physical parameters and a search for line profile variability". Astronomy and Astrophysics. 322: 565. Bibcode:1997A&A...322..565H.
- 1 2 3 4 Johnson, H. L.; et al. (1966). "UBVRIJKL photometry of the bright stars". Communications of the Lunar and Planetary Laboratory. 4 (99): 99. Bibcode:1966CoLPL...4...99J.
- 1 2 Evans, D. S. (Juni 20–24, 1966). "The Revision of the General Catalogue of Radial Velocities". Dalam Batten, Alan Henry; Heard, John Frederick (ed.). Determination of Radial Velocities and their Applications. IAU Symposium no. 30. Vol. 30. University of Toronto: International Astronomical Union. hlm. 57. Bibcode:1967IAUS...30...57E.
{{cite conference}}: Pemeliharaan CS1: Tanggal diterjemahkan otomatis (link) - 1 2 3 Catanzaro, G. (2010). "First spectroscopic analysis of β Scorpii C and β Scorpii E. Discovery of a new Hg Mn star in the multiple system β Scorpii". Astronomy and Astrophysics. 509: A21. Bibcode:2010A&A...509A..21C. doi:10.1051/0004-6361/200913332.
- ↑ Rumrill, H. B. (1936-06). "Star Name Pronunciation". Publications of the Astronomical Society of the Pacific (dalam bahasa Inggris). 48: 139. doi:10.1086/124681. ISSN 0004-6280.
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