The orbit is located at the center of the main belt. It has a perihelion of 2.15 AU and an aphelion of 3.01 AU. The semimajor axis is at 2.58 AU. It has an orbital period of 4 years and 58 days. It has an inclination of 9.1º. It has a diameter of about 152 km.
Orbital resonance:
20:7 with Jupiter (99.7%)
9:20 with Mars (99.5%)
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10:9 with Pallas (99.8%)
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9:7 with Interamnia (99.9%)
10:9 with Herculina (99.9%)
6:5 with Psyche (99.8%)
Greek mythology
Irene (Eirene) means in ancient Greek "the one that brings peace". In Greek mythology she was one of the three Horae, toghether with Dike and Eunomia. Irene was the embodiment of peace and wealth. It was usually represented by a beautiful woman with a crown of flowers and an olive branch in one hand, and on the other, a cornucopia.
The 11th hexagram of I-Ching, entitled 'Peace', is related with special moments in which supply and demand are very high.
John Herschel explained, through the following letter, the reasons that led him to choose the name of the asteroid: "You will readily discover that this name [...] has some relation to this event (the Great Industrial Exhibition) which is now filling our metropolis [London] with the talent of all civilised nations, with those of Peace, the productions of Art and Science, in which all mankind must feel an interest."
The Great Exhibition of the Works of Industry of All Nations in the Crystal Palace of Hyde Park, London, ran from May 1 until October 18, 1851.
(14) Irene is related with the exhibition of products in shop windows or stands, according to categories (9:7 resonance with Interamnia).
