Alpha Centauri
 Lotak Alpha Centauri, basamo danganBeta Centaurimanjadi "panunjuak" untuak rasiTando Tambah Salatan.Bawah: bintang Alpha Centauri | |
| Data pangamatan EposJ2000EkuinoksJ2000 | |
|---|---|
| Rasi bintang | Sentaurus |
| Asensio rekta | 14j39m36.5/35.1d |
| Deklinasi | -60° 50′ 02.3/13.8″ |
| Magnitudo tampak(V) | -0.01/+1.34/+11.05 |
| Ciri-ciri | |
| Kelas spektrum | G2 V/K1 V/M5.5 Ve |
| Indeks warnoU−B | 0.24/0.64/1.54 |
| Indeks warnoB−V | 0.65/0.85/1.97 |
| Jinih variabel | Indak ado |
| Astrometri | |
| Kacapatan radial(Rv) | -21.6 km/s |
| Garak diri(μ) | RA:-3678.19mdb/thn Dek.:481.84mdb/thn |
| Paralaks(π) | 747,23±1,17mdb |
| Jarak | 4,365 ± 0,007tc (1,338 ± 0,002pc) |
| Magnitudo mutlak(MV) | 4.38/5.71/15.49 |
| Detail | |
| Massa | 1.100/0.907/0.1M☉ |
| Radius | 1.227/0.865/0.2R☉ |
| Luminositas | 1.519/0.500/0.00006L☉ |
| Gravitasi parmukaan(logg) | 4.30/4.37[1] |
| Suhu | 5,800/5,300/2700K |
| Metalisitas | 130-230% Sun |
| Rotasi | ? |
| Usia | 5-6 × 109tahun |
| Orbit bintang gando visual | |
| Bintang sekunder | Alpha Centauri B |
| Pariode(P) | 79.24 tahun |
| Sumbu semi-mayor(a) | 17.59 " |
| Eksentrisitas(e) | 0.516 |
| Inklinasi(i) | 79.24° |
| Bujur node(Ω) | 204.87° |
| Epochperiastron(T) | 1955.56 |
| Referensi basis data | |
| SIMBAD | data |
| ARICNS | data |
| Panamoan lain | |
| Referensi basis data | |
| SIMBAD | data |
Alpha Centauri(α Cen / α Centauri); (takana juo sabagaiRigil Kentaurus,Rigil Kent,atauToliman) adolah bintang nan tadokek dari sistemtata suryakito dan paliang corah dalamrasiSentaurus.Walaupun tampak saparti ciek titiak dicaliak dangan mato talanjang, bintang iko saboneghnyo adolah sistem tigobintang.
Rujuakan
[suntiang|suntiang sumber]- ↑Gilli, G.; Israelian, G.; Ecuvillon, A.; Santos, N. C.; Mayor, M. (2006)."Abundances of Refractory Elements in the Atmospheres of Stars with Extrasolar Planets".Astronomy and Astrophysics.449(2): 723–736.Diakses tanggal2007-06-01.
Pautan lua
[suntiang|suntiang sumber] |
Ado kategori tantangAlpha CentauridiWikimedia Commons |
Media tantangAlpha Centauridi Wikimedia Commons- SIMBAD observational data
- Sixth Catalogue of Orbits of Visual Binary Stars U.S.N.O.
- The Imperial Star – Alpha Centauri
- Alpha Centauri – A Voyage to Alpha Centauri
- Immediate History of Alpha Centauri
- eSky: Alpha Centauri
Hypothetical planets or exploration
[suntiang|suntiang sumber]- "A Family Portrait of the Alpha Centauri System".European Southern Observatory Press Release:5. 2003.Bibcode:2003eso..pres....7.Diakses tanggal18 November2021.[pranala nonaktif permanen]
- Alpha Centauri System
- O Sistema Alpha Centauri (Portuguese)Archived3 March 2016[Date mismatch]diWayback Machine.
- Alpha Centauri – Associação de Astronomia (Portuguese)
- Thompson, Andrea (7 Maret 2008)."Nearest Star System Might Harbor Earth Twin".Space.com. Diarsipkan dariversi aslitanggal 2 Juni 2008.Diakses tanggal18 November2021.