Messier 87 (also known as Virgo A or NGC 4486, generally abbreviated to M87) is a supergiant elliptical galaxy in the constellation Virgo that contains several trillion stars.

2015年8月14日 · It has the designation NGC 4486 in the New General Catalogue. Virgo A occupies an area of 7.2 by 6.8 arc minutes of apparent sky, which corresponds to a linear diameter of 120,000 light years, roughly the same size as the Milky Way. It is the second brightest galaxy in the northern part of the Virgo Cluster, second only to Messier 49.

Messier 87 is a large Elliptical Galaxy in the constellation of Virgo. Messier 87 is located approximately 55 million light-years away. The galaxy was discovered by Charles Messier, the French astronomer who lived between 1730 and 1817 in Paris. Charles indexed the galaxy in his catalogue with the ID of 87, hence its name.

Messier 87 (also known as M87, Virgo A or NGC 4486) is a supergiant elliptical galaxy. It was discovered in 1781 by the French astronomer Charles Messier, who catalogued it as a nebulous feature. The second brightest galaxy within the northern Virgo Cluster, it is about 16.4 million parsecs (53.5 million light-years) from Earth. [1][2]

2023年4月17日 · Amid all the sparkling spiral galaxies this seemingly unremarkable object is in fact mighty Messier 87 (NGC 4486, Virgo A), a supergiant elliptical galaxy (class E0, most spherical rather than flattened) that’s the powerhouse, central galaxy of the Virgo Cluster.

2024年7月8日 · 室女A星系，又称 梅西耶 87，简称 M87，一名 NGC 4486，是 室女座 的巨型 椭圆星系，也是 银河系 附近质量最大的星系之一。 此星系拥有几项受瞩目的特性，第一，其 球状星团 数量特别多──M87星系里共含12,000个球状星团，参考之下，环绕银河系的球状星团数量为150-200个。 其二，该星系由核心发出一道向外延伸约1,500 秒差距 （4900光年）的高能等离子体喷流，运动速度达 相对论速度，与光速已相当接近。 M87是天空中最明亮的电波源之一，也 …

在1880年代，此编号为M87的星云获列入 星云和星团新总表 成为编号 NGC 4486号天体。 该版 新总表 由 爱尔兰 天文学家约翰·德雷尔汇编，主要内容采用英国天文学家 约翰·赫歇尔 之观测资料 [3]。

Messier 87 (M87), also known as Virgo A or NGC 4486, is an elliptical supergiant galaxy situated in the constellation of Virgo. This remarkable astronomical entity has been subject to intense study due to its peculiar features, such as the jet of relativistic plasma and, notably, the supermassive black hole at its center.

2024年3月3日 · The galaxy's designation, NGC 4486, comes from the New General Catalogue of Nebulae and Clusters of Stars. The galaxy's name, "Smoking Gun," is a colloquial term due to its association with the observed jet activity.

Messier 87 or M87 (also designated NGC 4486) is a in the constellation . It has an apparent visual magnitude of 8.6 and its angular diameter is 7 arc-minutes. M87 lies at an estimated distance of 60 million light years. The Equinox 2000 coordinates are RA= 12h 30.8m, Dec= +12° 24´ which makes M87 best seen during the spring.