Alpha Arae
Tampilan
Data pengamatan Epos J2000.0 Ekuinoks J2000.0 (ICRS) | |
---|---|
Rasi bintang | Ara |
Asensio rekta | 17j 31m 50.4933d[1] |
Deklinasi | −49° 52′ 34.121″[1] |
Magnitudo tampak (V) | 2.76 to 2.90[2] |
Ciri-ciri | |
Kelas spektrum | B3Ve |
Indeks warna U−B | −0.69[2] |
Indeks warna B−V | −0.17[2] |
Indeks warna R−I | −0.24[2] |
Jenis variabel | BE[3] |
Astrometri | |
Kecepatan radial (Rv) | 0[1] km/s |
Gerak diri ( | RA: −31.27[1] mdb/thn Dek.: −67.15[1] mdb/thn |
Paralaks ( | 13,46±0,95[1] mdb |
Jarak | 240 ± 20 tc (74 ± 5 pc) |
Magnitudo mutlak (MV) | −1.5[note 1] |
Detail | |
Massa | 9.6 M☉ |
Radius | 4.8 R☉ |
Luminositas (bolometrik) | 5,800 L☉ |
Suhu | 18,000 K |
Rotasi | 12 h[note 2] |
Kecepatan rotasi (v sin i) | 375 km/s |
Penamaan lain | |
Choo, Tchou, | |
Referensi basis data | |
SIMBAD | data |
Alpha Arae (Alpha Ara /
Etimologi
[sunting | sunting sumber]Bintang ini memiliki nama tradisional Tchou atau Choo, dari bahasa China
nama lain | asal bahasa | arti |
---|---|---|
China / Mandarin | bintang kedua pada rasi Alat Penumbuk[4] | |
Quae est in media arae (Almagest) | Latin | yang berada di tengah altar[5] |
Referensi
[sunting | sunting sumber]- ^ a b c d e f g V* alf Ara -- Eruptive variable Star, database entry, SIMBAD. Accessed on line November 26, 2008.
- ^ a b c d HR 6510, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line November 26, 2008.
- ^ alf Ara, database entry, The combined table of GCVS Vols I-III and NL 67-78 with improved coordinates, General Catalogue of Variable Stars, Sternberg Astronomical Institute, Moscow, Russia. Accessed on line November 26, 2008.
- ^ salah satu rasi bintang menurut bangsa Cina
- ^ http://www.ac-ilsestante.it/ASTRONOMIA/costellazioni/costellazioni_finestra_manuale/costellazione_ara/stelle/D06_ALPHA_ARAE.html
Pranala luar
[sunting | sunting sumber]- HR 6510, entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50.
α Arae Diarsipkan 2016-03-04 di Wayback Machine. at Alycone Software's Star Data Pages.- Image of Alpha Arae from Aladin.
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