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Lambda Cassiopeiae
Lambda Cassiopeiae, Latinisation of names, Latinized from λ Cassiopeiae, is a binary star system, in the northern constellation of Cassiopeia (constellation), Cassiopeia. The system has a combined apparent magnitude of +4.74, making it faintly visible to the naked eye. With an annual stellar parallax, parallax shift of 8.64 milliarcsecond, mass, it is approximately 380 light years from Earth. The system is moving closer to the Sun with a radial velocity of −12 km/s. Both components are blue-white B-type main-sequence stars. The brighter member, component A, has an apparent magnitude of +5.5, while its companion, component B, has an apparent magnitude of +5.8. The two stars are separated by 0.6 arcseconds and complete one orbit around their common centre of mass about once every 250 years. The primary displays an infrared excess, possibly due to a debris disk or other orbiting material. References {{Stars of Cassiopeia B-type main-sequence stars Bina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lambda Cassiopeiae Diagram
Lambda (}, ''lám(b)da'') is the 11th letter of the Greek alphabet, representing the Dental, alveolar and postalveolar lateral approximants, voiced alveolar lateral approximant . In the system of Greek numerals, lambda has a value of 30. Lambda is derived from the Phoenician alphabet, Phoenician Lamed . Lambda gave rise to the Latin script, Latin L and the Cyrillic script, Cyrillic El (Cyrillic), El (Л). The ancient Alexandrine grammarians, grammarians and dramatists give evidence to the pronunciation as () in Classical Greek times. In Modern Greek, the name of the letter, Λάμδα, is pronounced . In Epichoric alphabets, early Greek alphabets, the shape and orientation of lambda varied. Most variants consisted of two straight strokes, one longer than the other, connected at their ends. The angle might be in the upper-left, lower-left ("Western" alphabets) or top ("Eastern" alphabets). Other variants had a vertical line with a horizontal or sloped stroke running to the right. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
