NGC 1491, also known as LBN 704, SH2-206 or the Fossil Footprint Nebula, is an emission type bright nebula located about 9,800 light years away from Earth in the constellation of Perseus. [1] .

NGC 1491 是 英仙座 的一個 瀰漫星雲，距離 地球 約9,800 光年 [1]。 該星雲之所以呈現深紅色，是因為NGC 1491內有許多大質量 恆星 （例如 BD+50 866），這些恆星產生大量 紫外線 輻射並使構成星雲的 氫氣 電離 [2][3]。

2024年5月31日 · NGC 1491 是 英仙座 的一个 弥漫星云，距离 地球 约9,800 光年 [1]。 该星云之所以呈现深红色，是因为NGC 1491内有许多大质量 恒星 （例如 BD+50 866），这些恒星产生大量 紫外线 辐射并使构成星云的 氢气 电离 [2][3]。

NGC 1491 is located in the constellation Perseus about one degree north-north-west of the star λ Persei. The constellation is best observed between September and February. Charts created using SkySafari 6 Pro and STScI Digitized Sky Survey.

NGC 1491 (also designated SH2-206 and LBN 704) is sometimes called the "Fossil Footprint" nebula. It is an emission nebula located at a distance of about 10,700 lys in Perseus. As with most nebula o...

2024年11月25日 · NGC 1491 is a faint emission nebula located about 9,800 light years away in the Perseus arm of our galaxy. At the core of the nebula is the O4 main sequence star BD+50 866, which is lighting up and eroding the surrounding dark gas and dust.

Located on the edge of a vast cloud of natural gas, about 10,700 light-years away in the constellation Perseus, NGC 1491 is also an H II region (a large, low-density cloud of partially ionized gas in which star formation has recently taken place).

NGC 1491 是英仙座的一个弥散星云。 发现者是弗里德里希·威廉·赫歇尔。 它也被称为LBN 704。

2022年11月23日 · NGC 1491 (also designated SH2-206 and LBN 704) is a bright emission nebula and HII region, located on the edge of a vast cloud region of neutral gas, about 10,700 light-years away in the Perseus arm o...

NGC 1491 is an emission nebula structure with most of the Ionization energy coming from the star BD+50 886 (TYC3339-339-1). Distance of NGC 1491 is about 10,700 light years.