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Une planète exoplanète est une planète en dehors du système solaire. La première confirmation de détection a eu lieu en 1992. Au 1er octobre 2022, il y avait 5 197 exoplanètes confirmées dans 3 833 systèmes planétaires, avec 840 systèmes ayant plus d’une planète. Des réclamations de détections d’exoplanètes ont été faites depuis le XIXe siècle. Certaines des plus anciennes impliquent l’étoile binaire 70 Ophiuchi. En 1855, William Stephen Jacob, de l’observatoire de Madras de la Compagnie des Indes orientales, rapporta que des anomalies orbitales rendaient « très probable » la présence d’un « corps planétaire » dans ce système.

Une planète exoplanète est une planète en dehors du système solaire. La première confirmation de détection a eu lieu en 1992. Au 1er octobre 2022, il y avait 5 197 exoplanètes confirmées dans 3 833 systèmes planétaires, avec 840 systèmes ayant plus d’une planète. Des réclamations de détections d’exoplanètes ont été faites depuis le XIXe siècle. Certaines des plus anciennes impliquent l’étoile binaire 70 Ophiuchi. En 1855, William Stephen Jacob, de l’observatoire de Madras de la Compagnie des Indes orientales, rapporta que des anomalies orbitales rendaient « très probable » la présence d’un « corps planétaire » dans ce système.

An exoplanet planet is a planet outside the Solar System. The first confirmation of detection occurred in 1992. As of 1 October 2022, there are 5,197 confirmed exoplanets in 3,833 planetary systems, with 840 systems having more than one planet. Claims of exoplanet detections have been made since the nineteenth century. Some of the earliest involve the binary star 70 Ophiuchi. In 1855 William Stephen Jacob at the East India Company’s Madras Observatory reported that orbital anomalies made it “highly probable” that there was a “planetary body” in this system.

An exoplanet planet is a planet outside the Solar System. The first confirmation of detection occurred in 1992. As of 1 October 2022, there are 5,197 confirmed exoplanets in 3,833 planetary systems, with 840 systems having more than one planet. Claims of exoplanet detections have been made since the nineteenth century. Some of the earliest involve the binary star 70 Ophiuchi. In 1855 William Stephen Jacob at the East India Company’s Madras Observatory reported that orbital anomalies made it “highly probable” that there was a “planetary body” in this system.

An exoplanet planet is a planet outside the Solar System. The first confirmation of detection occurred in 1992. As of 1 October 2022, there are 5,197 confirmed exoplanets in 3,833 planetary systems, with 840 systems having more than one planet. Claims of exoplanet detections have been made since the nineteenth century. Some of the earliest involve the binary star 70 Ophiuchi. In 1855 William Stephen Jacob at the East India Company’s Madras Observatory reported that orbital anomalies made it “highly probable” that there was a “planetary body” in this system.

An exoplanet planet is a planet outside the Solar System. The first confirmation of detection occurred in 1992. As of 1 October 2022, there are 5,197 confirmed exoplanets in 3,833 planetary systems, with 840 systems having more than one planet. Claims of exoplanet detections have been made since the nineteenth century. Some of the earliest involve the binary star 70 Ophiuchi. In 1855 William Stephen Jacob at the East India Company’s Madras Observatory reported that orbital anomalies made it “highly probable” that there was a “planetary body” in this system.