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Orion OB1 (Ori OB1) is a contingent group of several dozen hot giant stars of spectral types O and B in Orion. Associated are thousands of lower-mass stars, and a (smaller but significant) number of protostars. It is part of the larger Orion molecular cloud complex. Owing to its relative closeness and complexity it is the most closely studied ...
The Orion OB1 association represents different stellar populations that are superimposed along our line of sight. The oldest group with 8-10 million years is Orion OB1a, northwest of Orion's Belt, and the youngest group with less than 2 million years is Orion OB1d, which contains the Orion Nebula cluster and NGC 2024. [7]
25 Orionis is the dominant member of a rich low-mass star region, [9] first identified in 2005 in a statistical analysis of 2.5 million stars. [10] It is one of several sub-associations within Orion OB1a, all thought to lie at around the same distance of 338 parsecs.
θ 1 Orionis (41 Orionis), the Trapezium Cluster, an open star cluster, the Orion OB Association 1d. θ 1 Orionis A (41 Orionis A, HD 37020, V1016 Orionis), a trinary star system; θ 1 Orionis B (41 Orionis B, HD 37021), a quintet star system θ 1 Orionis B West (COUP 766, MAX 97), an astronomical X-ray source
Eta Orionis or Algjebbah, Latinized from η Orionis, is a multiple star in the constellation Orion. It lies a little to the west of Orion's Belt between Delta Orionis and Rigel, being closer to Delta Orionis than to Rigel. It lies at a distance of around 1,000 light-years from Earth and is part of the Orion OB1 association.
Ludvig Aberg hits his tee shot on the 8th hole of the North Course at Torrey Pines during the first round of the Farmers Insurance Open golf tournament Wednesday, Jan. 22, 2025, in San Diego.
Meissa / ˈ m aɪ s ə /, designated Lambda Orionis (λ Orionis, abbreviated Lambda Ori, λ Ori) is a star in the constellation of Orion. It is a multiple star approximately 1,300 ly away with a combined apparent magnitude of 3.33. [12] The main components are an O8 giant star and a B-class main sequence star, separated by about 4″.
Alcoholic beverage company Diageo Plc (NYSE:DEO) released first-half FY25 earnings results and suspended medium-term guidance. The company reported net sales of $10.9 billion for the half year ...