Messier 39 or M39, also known as NGC 7092, is an open cluster of stars in the constellation of Cygnus, sometimes referred to as the Pyramid Cluster. It is positioned two degrees south of the star Pi Cygni [7] and around 9° east-northeast of Deneb. [8]

2015年5月13日 · Messier 39 (M39) is a large open cluster located in the constellation Cygnus, the Swan. The cluster has an apparent magnitude of 5.5 and lies at a distance of 824.4 light years from Earth. It has the designation NGC 7092 in the New General Catalogue.

This large, loose star cluster was already discovered by Aristotle in 325 BC. Noticed as a meteoric appearing object. Charles Messier took it on 24 October 1764 as the 39th item in his list. [4, 196]

Messier 39 (M39 or NGC 7092) is an open star cluster located in the constellation Cygnus, the Swan. It is noted for its brightness and for the ease with which it can be found in the night sky. In this article, we will take a detailed look at M39's characteristics, its historical background, and practical advice on how to best observe it.

2017年4月10日 · "We describe a Faraday rotation structure in the interstellar medium detected through polarimetric imaging at 1420 MHz from the Canadian Galactic Plane Survey (CGPS). The structure, at l = 918,b =...

2021年4月12日 · Messier 39 (M39) is a large open cluster located in the constellation Cygnus, the Swan. The cluster’s apparent size is 32 arc minutes, making it larger than the full Moon, which means that M39 is best observed in binoculars and small telescopes at the lowest magnifications.

Situated at a distance of approximately 825 light-years from Earth, M39 is a relatively close and bright cluster in our night sky. The cluster contains around 30 stars spread across an area of the sky that is about as large as the full Moon, making it an easy target for amateur astronomers.

梅西耶星表是经过精心记录的天文物体的汇编。 1774 年，法国天文学家查尔斯·梅西耶 (Charles Messier) 编制了一份包含 110 个天体的综合列表，称为梅西耶星表。

M39, also known as NGC 7092, is a beautiful open cluster located only 800 light-years away in a dense portion of the Milky Way in Cygnus. Its age is estimated between 230 and 300 million years and it ...

Messier 39 or M39 (also designated NGC 7092) is an in the constellation . It has an apparent visual magnitude of 4.6 and its angular diameter is 32 arc-minutes. M39 lies at an estimated distance of 825 light years. The Equinox 2000 coordinates are RA= 21h 32.2m, Dec= +48° 26´ which makes M39 best seen during the autumn.