48 Cassiopeiae
Encyclopedia : 4 : 48 : 48C : 48 Cassiopeiae
|- style="vertical-align: top;" | B-V color index | |- style="vertical-align: top;" | U-B color index | |- style="vertical-align: top;" | Variable type |
|- ! style="background-color: #FFFFC0;" colspan="2" | Visual binary orbit |- style="vertical-align: top;" | Companion | 48 Cassiopeiae B |- style="vertical-align: top;" | Period (P) | 60.5 years |- style="vertical-align: top;" | Semimajor axis (a) | 0.62" |- style="vertical-align: top;" | Eccentricity (e) | 0.36 |- style="vertical-align: top;" | Inclination (i) | 17° |- style="vertical-align: top;" | Node (Ω) | 44° |- style="vertical-align: top;" | Periastron epoch (T) | 1965.00
|- ! style="background-color: #FFFFC0;" colspan="2" | Other designations |- | colspan="2" |
|} 48 Cassiopeiae is a star system in the constellation Cassiopeia. It is approximately 116.9 light years from Earth.The primary component, 48 Cassiopeiae A, is a white A-type subgiant with an apparent magnitude of +4.71. It has an astrometric companion, 48 Cassiopeiae B, which is a F-type main sequence dwarf with an apparent magnitude of +6.41. These two stars orbit around their common centre of mass once every 60.5 years. Component B has a semi-major axis of 0.62 arcseconds, or 22 AU. A third companion, 48 Cassiopeiae C, is a fourteenth magnitude star located 24 arcseconds, or at least 850 AU, away. The primary is also a spectroscopic binary, and has an unresolved companion, meaning the system has at least four components.
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