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| Data pengamatan Epos J2000.0 Ekuinoks J2000.0 (ICRS) | |
|---|---|
| Rasi bintang | Andromeda |
| Asensio rekta | 00j 47m 20.3254d[1] |
| Deklinasi | +24° 16′ 01.841″[1] |
| Magnitudo tampak (V) | 3.92 to 4.14[2] |
| Ciri-ciri | |
| Kelas spektrum | K1IIe[1] |
| Indeks warna U−B | +0.90[3] |
| Indeks warna B−V | +1.12[3] |
| Indeks warna R−I | +0.59[3] |
| Jenis variabel | ELL/RS[2] |
| Astrometri | |
| Kecepatan radial (Rv) | −23.7 ± 0.9[1] km/s |
| Gerak diri (μ) | RA: −101.23[1] mdb/thn Dek.: −81.89[1] mdb/thn |
| Paralaks (π) | 17,98±0,83[1] mdb |
| Jarak | 181 ± 8 tc (56 ± 3 pc) |
| Magnitudo mutlak (MV) | 0.3[4] |
| Detail | |
| Radius | 8.30[5] R☉ |
| Kecepatan rotasi (v sin i) | 40[3] km/s |
| Penamaan lain | |
| Referensi basis data | |
| SIMBAD | data |
Zeta Andromedae (Zeta And / ζ Andromedae / ζ And) adalah bintang ganda yang berada di rasi Andromeda. Bintang ini berada pada jarak 181 tahun cahaya dari Bumi.[1]
Zeta Andromedae adalah bintang ganda di mana komponen utamanya merupakan bintang raksasa jingga terang tipe K (orange K-type bright giant) dengan magnitudo rata-rata 4.08. Magnitudo paling terangnya berkisar antara 3.92 sampai 4.14 dengan periode orbit 17.77 hari.
- ^ a b c d e f g h i V* zet And -- Eclipsing binary of beta Lyr type, database entry, SIMBAD. Accessed on line August 29, 2008.
- ^ a b zet And, 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 August 29, 2008.
- ^ a b c d HR 215, 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 29, 2008.
- ^ From apparent magnitude and parallax.
- ^ HD 4502, database entry, Catalog of Apparent Diameters and Absolute Radii of Stars (CADARS), 3rd edition, L. E. Pasinetti-Fracassini, L. Pastori, S. Covino, and A. Pozzi, CDS ID II/224. Accessed on line August 29, 2008.