NGC 2509 is an open cluster in the constellation of Puppis. It was discovered on 3 December 1783 by William Herschel. [3] It was described as "bright, pretty rich, slightly compressed" by John Louis Emil Dreyer, the compiler of the New General Catalogue. [3]

NGC 2509 是位于船尾座的一个疏散星团。 它的赤经为8h 0.7m，赤纬为-19° 4′，大小8′。

NGC 2509 is a Open Cluster in the Puppis constellation. NGC 2509 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 9.3, NGC 2509 is visible with the help of a binocular with a 60-70mm aperture or a small telescope.

2023年9月11日 · Physical Information: Based on a recessional velocity of 505 km/sec, NGC 2500 is about 24 million light years away, but for small distances peculiar (non-Hubble expansion) velocities can significantly affect the accuracy of such distance estimates.

2018年10月1日 · The rich galactic open star cluster NGC 2509, in the constellation of Puppis (α 2000 = 08 h 00 m 48 s, δ 2000 = − 19 ∘ 03 ′ 06 ″) is at a distance of 912 ± 15 pc.

From Virginia Beach , NGC2509 is visible between 21:29 and 02:57. It will become accessible at around 21:29, when it rises to an altitude of 21° above your south-eastern horizon. It will reach its highest point in the sky at 00:13, 34° above your southern horizon.

Moreover, to determine cluster members more precision and get reliable astrometric parameters for NGC 2509, we filtered possible members which brighter than completeness limit G ≤ 21 mag and within the cluster limiting radius (rlim=7').

2023年9月10日 · This study presents structural and fundamental astrophysical parameters of poorly studied open cluster NGC 2509. We used the third photometric and astrometric data release of the Gaia (Gaia DR3...

NGC 2509 is an open cluster in the constellation of Puppis. It was discovered on 3 December 1783 by William Herschel. It was described as "bright, pretty rich, ...

2024年8月30日 · NGC 2509는 고물자리 방향으로 9,500 광년 떨어져 있는 산개성단 이다. 2. 상세 [편집] 1783년 12월 3일 윌리엄 허셜 에 의해 처음 발견되었으며 고물자리 이중성단 과 투레이스 …