Spica is a rotating ellipsoidal variable, which is a non-eclipsing close binary star system where the stars are mutually distorted through their gravitational interaction. This effect causes the apparent magnitude of the star system to vary by 0.03 over an interval that matches the orbital period.

角 宿 xiù 一 （α Vir / 室女座α / 英语： Spica）位於 室女座，是全天空 第十六亮 的 恆星，也是室女座最明亮的恆星。 北半球 的觀測者在 春季 夜晚，可以在東南方向的天空看到这颗明亮的1等星。 想要找到角宿一，觀測者只需要沿着位于 大熊座 的 北斗七星 的斗柄和 牧夫座 的 大角 连成的曲线方向往下就可以看到它。 角宿一是一個 聯星系統：角宿一A是一顆 藍巨星，屬於 仙王座β型變星。 角宿一B比角宿一A小，是一顆 主序星。 角宿一距離 地球 有260 光年 之遥 [9][10]。 古 …

Spica is the brightest star in the constellation Virgo and the sixteenth-brightest star in the night sky. It is a binary star system located about 250 light-years away from Earth. Spica has an apparent magnitude of 0.98 and consists of two main …

2025年3月17日 · Spica is the brightest star in the constellation Virgo. The star often passes close to the Moon and planets – the next events are listed in the "When to see Spica" section of this article. You can locate Spica by using the Big Dipper …

2014年3月19日 · Fixed star Spica, Alpha Virginis, is a spectroscopic binary star system whose two stars are so close together they are egg-shaped rather than spherical, and can only be separated by their spectra. The primary is a blue giant and a variable star of the Beta Cephei type.

Spica, also known as Alpha Virginis, is the brightest star in the southern constellation Virgo and the 16th brightest star in the night sky. It has an apparent magnitude of 1.04, that can vary between 0.97 and 1.04. Its absolute magnitude is -3.55. The name Spica comes from the Latin phrase spīca virginis, meaning “Virgo’s ear of grain”.

2019年10月8日 · Spica, Alpha Virginis (α Vir), is a blue-white spectroscopic binary star located at a distance of 250 light years from Earth in the constellation Virgo. With an apparent magnitude of 0.97, it is the brightest star in Virgo and the 16th brightest star in the sky.

2025年1月8日 · Spica is the 15th brightest star in the sky and the brightest in the Virgo constellation. The star is also known as Alpha Virginis and is situated around 250 light-years from Earth. Spica is...

2023年4月26日 · Spica, a binary star system composed of B1 III and B2 V stars, presents a unique spectacle with its combined radiance. In contrast, the Sun, classified as a G2 V main-sequence star, symbolizes the steadfast heart of our solar system.

2012年1月31日 · Spica or Alpha Virginis (Alp Vir) is the brightest naked eye star in the constellation Virgo. With an apparent magnitude of 0.98v, Spica is the 15th brightest star in the entire sky (see: 50 Brightest Stars ).