Epsilon Andromedae
Epsilon Andromedae (Epsilon And / ε Andromedae / ε And) adalah bintang raksasa tipe G di rasi bintang Andromeda.[1] Bintang ini memiliki magnitudo 4.37.[1]
 Location of ε Andromedae (lower left of center) | |
| Data pengamatan Epos J2000.0 Ekuinoks J2000.0 (ICRS) | |
|---|---|
| Rasi bintang | Andromeda |
| Asensio rekta | 00j 38m 33.3458d[1] |
| Deklinasi | +29° 18′ 42.305″[1] |
| Magnitudo tampak (V) | 4.37[1] |
| Ciri-ciri | |
| Kelas spektrum | G6IIIFe-3CH1[2] |
| Indeks warna U−B | +0.47[2] |
| Indeks warna B−V | +0.87[2] |
| Indeks warna V−R | 0.6[1] |
| Indeks warna R−I | +0.51[2] |
| Astrometri | |
| Kecepatan radial (Rv) | −83.6 ± 0.9[1] km/s |
| Gerak diri (μ) | RA: −229.42[1] mdb/thn Dek.: −254.09[1] mdb/thn |
| Paralaks (π) | 19,34±0,76[1] mdb |
| Jarak | 169 ± 7 tc (52 ± 2 pc) |
| Magnitudo mutlak (MV) | 0.8[3] |
| Detail | |
| Massa | 2.4[4] M☉ |
| Radius | 9.8[4] R☉ |
| Luminositas | 52[4] L☉ |
| Suhu | 4930[4] K |
| Kecepatan rotasi (v sin i) | 9[2] km/s |
| Usia | 6.5 × 108[4] tahun |
| Penamaan lain | |
| Referensi basis data | |
| SIMBAD | data |
ε Andromedae diprecaya akan menjadi bintang gumpalan merah karena fusi helium di dalamnya.
Etimologi
Nama lain dari para astronom terdahulu adalah:
| nama lain | asal bahasa | arti |
|---|---|---|
| 奎宿六 / Kuí Su liù | China | bintang keenam pada rasi Kaki[5] |
| Quae in humero sinistro (Almagest) | Latin | yang berada di bahu kiri (sang perawan yang dirantai)[6] |
Referensi
- NLTT 2065 -- High proper-motion Star, database entry, SIMBAD. Accessed on line August 28, 2008.
- HR 163, 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 August 28, 2008.
- From parallax and apparent magnitude.
- Epsilon Andromedae, Stars, Jim Kaler. Accessed on line August 28, 2008.
- salah satu rasi bintang menurut bangsa Cina
- http://www.atlascoelestis.com/alsufi%2020.htm
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