将以下文本总结为3句话左右，且需保留 Date of Discovery 和 Abstract 两个部分的信息。总结时请用第三人称。2023-04-12, A new exoplanet was discovered orbiting a star in the constellation Pegasus. Designated as Pegasus-2023b, the planet is approximately 1.5 times the mass of Jupiter and is in a close orbit around its star, completing one revolution every 4.5 days. According to the research published, the exoplanet shows characteristics that are similar to gas giants in our solar system, particularly in terms of atmospheric composition and temperature. The discovery, made by an international team of astronomers, adds to the growing list of confirmed exoplanets, bringing the total to 5,000. This detection suggests that gas giants may be more common around stars than previously thought. Date of Discovery: 2023-04-12. Abstract: An international team of astronomers has recently discovered a new exoplanet, Pegasus-2023b, characterized as a gas giant with a mass 1.5 times that of Jupiter, orbiting its star closely with a period of 4.5 days. The planet's atmospheric composition and temperature are similar to those of gas giants in our solar system. The discovery increases the total count of confirmed exoplanets to 5,000, hinting at the possible abundance of gas giants around stars.
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2023年4月12日，一个国际天文学家团队发现了一颗新的系外行星Pegasus-2023b，其质量约为木星的1.5倍，绕其恒星运行的周期为4.5天。该行星的大气成分和温度与太阳系中的气态巨行星相似，属于近距离轨道上的类木行星。此次发现使得已确认的系外行星总数达到5000颗，暗示气态巨行星可能比之前认为的更为常见。
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