NGC 3521 is a flocculent [4] intermediate spiral galaxy located in the constellation Leo. Its velocity with respect to the cosmic microwave background is 1167 ± 26 km/s, which corresponds to a Hubble distance of 56.1 ± 4.1 Mly (17.21 ± 1.26 Mpc). [1] .

NGC 3521 是一个 絮结螺旋星系 [4]，距离地球约2千6百万光年 [4]，位于 狮子座。 在 星系分类 中属于 SAB (rs)bc [3]，代表它有一个棒状结构的痕迹（SAB）、一个不明显的内环结构（rs）和中等到松散紧密程度的螺旋臂结构（bc） [5]。

NGC 3521是一个絮结螺旋星系，距离地球约2千6百万光年，位于狮子座。 在星系分类中属于 SAB (rs)bc，代表它有一个棒状结构的痕迹（SAB）、一个不明显的内环结构（rs）和中等到松散紧密程度的螺旋臂结构（bc）

2021年4月2日 · Relatively bright in planet Earth’s sky, NGC 3521 is easily visible in small telescopes but often overlooked by amateur imagers in favor of other Leo spiral galaxies, like M66 and M65. It’s hard to overlook in this colorful cosmic portrait, though.

2015年9月25日 · This new image of the spiral galaxy NGC 3521 from the NASA/ESA Hubble Space Telescope is not out of focus. Instead, the galaxy itself has a soft, woolly appearance as it a member of a class of galaxies known as flocculent spirals.

2023年7月25日 · NGC 3521 is a member of a class of galaxies known as flocculent spirals. Like other flocculent galaxies, NGC 3521 lacks the clearly defined, arcing structure to its spiral arms, and patches of stars and dust show up here and there throughout their disks.

Explanation: Gorgeous spiral galaxy NGC 3521 is a mere 35 million light-years away, toward the northern springtime constellation Leo. Relatively bright in planet Earth's sky, NGC 3521 is easily visible in small telescopes but often overlooked by amateur imagers in favor of other Leo spiral galaxies, like M66 and M65.

2024年11月26日 · Galaxy NGC 3521 in constellation Leo. Charts created using SkySafari 6 Pro and STScI Digitized Sky Survey. Limiting magnitudes: Constellation chart ~6.5 mag, DSS2 close-ups ~20 mag. [149, 160]

NGC 3521 是一個 絮結螺旋星系 [4]，距離地球約2千6百萬光年 [4]，位於 獅子座。 在 星系分類 中屬於 SAB (rs)bc [3]，代表它有一個棒狀結構的痕跡（SAB）、一個不明顯的內環結構（rs）和中等到鬆散緊密程度的螺旋臂結構（bc） [5]。

NGC 3521 is a flocculent spiral galaxy located about 35 million light years away in Leo. Spanning about 50,000 light years, the galaxy is embedded in gigantic bubble-like shells. The shells are lik...