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M65

Leo Triplet

銀河 絶品 (75/100)

Spiral

M65 Galaxy Leo 可視 レベル 3 Medium telescope (6-8") - Dark skies recommended
Credit: ESA/Hubble & NASA. License: Public domain. (Wikimedia Commons)
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物性

等級 9.3
角度サイズ 7.6′ × 2.0′
位置角 173°
距離 35000000 ly
銀河タイプ Spiral (SABa)
Galaxy [Distance: 35000000 ly]

位置と識別子

RA 11h 18m 55.9s
Dec +13° 05' 32.0"
星座 Leo
カタログ M65

可視性

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M65について

説明

M65 is a spiral galaxy in Leo, about 35 million light-years from Earth. Together with M66 and NGC 3628, it forms the famous Leo Triplet — one of the finest galaxy groups for amateur telescopes. M65 is an intermediate spiral with prominent dust lanes visible along its inclined disk, spanning about 90,000 light-years.

観測のコツ

Located about 3 degrees south-southeast of Theta Leonis (Chertan). M65 and M66 are separated by only 20 arcminutes and fit together in a low-power telescope field. A 4-inch telescope shows both as elongated glows. An 8-inch reveals the dust lane along M65's western edge. NGC 3628 (the Hamburger Galaxy) lies 35 arcminutes to the north, completing the triplet. Best observed from March through June.

歴史

Discovered by Charles Messier on March 1, 1780, on the same night as M66. The Leo Triplet has become one of the most popular galaxy groups for amateur astrophotography.

豆知識

The Leo Triplet galaxies are gravitationally interacting. Deep photographs show a 300,000-light-year tidal tail stretching from NGC 3628, pulled out by the gravitational influence of M65 and M66. Despite their close proximity, M65 appears relatively undisturbed compared to its companions.

コミュニティ写真 (1)

Credit: ESA/Hubble & NASA. License: Public domain. (Wikimedia Commons)

Credit: ESA/Hubble & NASA. License: Public domain. (Wikimedia Commons)

Skybred Feb 28, 2026