NGC 2169 is an open cluster in the Orion constellation. It was possibly discovered by Giovanni Batista Hodierna before 1654 and discovered by William Herschel on October 15, 1784. [1] . NGC 2169 is at a distance of about 3,600 light years away from Earth. It is nicknamed "The '37' Cluster" due to its striking resemblance to the numerals "37". [2] .

NGC 2169 是一个位于猎户座的疏散星团，由于其外形近似于阿拉伯数字的37，而又被昵称为37星团（The "37" Cluster）。NGC 2169最初由天文学家 威廉·赫歇尔于1784年10月15日首次确切纪录到，但可能早在1654年前就已被义大利天文学家乔瓦尼·巴蒂斯塔·奥迪耶纳发现 [3] 。

NGC 2169 is a Open Cluster in the Orion constellation. NGC 2169 is situated close to the celestial equator and, as such, it is at least partly visible from both hemispheres in certain times of the year. Given its visual magnitude of 5.9, NGC 2169 is …

The 37 Cluster, also known by its New General Catalogue designation NGC 2169, is a small open cluster located in the constellation Orion. With an apparent magnitude of 5.9, it is easily observed in binoculars and small telescopes. The cluster lies approximately 3,600 light-years away.

The open cluster NGC 2169 is located in the constellation of Orion, which is best visible from August to April. Charts created using SkySafari 6 Pro and STScI Digitized Sky Survey.

NGC 2169 是一个位于 猎户座 的 疏散星团，由于其外形近似于 阿拉伯数字 的37，而又被昵称为37星团（The 37 Cluster）。 NGC 2169最初由 天文学家 威廉·赫歇尔 于1784年10月15日首次确切纪录到，但可能早在1654年前就已被 意大利 天文学家乔凡尼·巴蒂斯塔·霍迪纳发现。 该星团距离地球约3600光年，年龄估计约900万年左右，是相当年轻的星团。 NGC 2169 是一个位于猎户座的疏散星团，由于其外形近似于阿拉伯数字的37，而又被昵称为37星团（The 37 Cluster）。

As far as galactic or open star clusters go, NGC 2169 is a small one, spanning about 7 light-years. Formed at the same time from the same cloud of dust and gas, the stars of NGC 2169 are only about 11 million years old.

NGC 2169 是一个位于猎户座的疏散星团，由于其外形近似于阿拉伯数字的37，而又被昵称为37星团。 NGC 2169最初由天文学家威廉·赫歇尔于1784年10月15日首次确切纪录到，但可能早在1654年前就已被意大利天文学家乔瓦尼·巴蒂斯塔·奥迪耶纳发现。

2014年1月23日 · From a dark site, sharp-eyed observers will spot magnitude 5.9 NGC 2169 with their naked eyes. The cluster isn’t huge — it spans only 6′ — but it contains seven stars brighter than 9th ...

NGC 2169, known as the "37" cluster, is a small open cluster in Orion. It is so named because its stellar members appear to form the number "37", which, coincidentally, is a prime number. NGC 2169 lies 53 arcminutes southwest of the magnitude 4.5 Xi Orionis.