NGC 884 with Ha-Clouds (Darius Kopriva)

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: 7 Per) · NGC 869 · NGC 884 · NGC 957 · The star 10 Per · The star 5 Per · The star 8 Per · The star Misam al Thurayya I (χ Per · chi Persei Cluster · h Persei Cluster

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NGC 884 with Ha-Clouds

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NGC 884 with Ha-Clouds

This image shows the Double Cluster in the constellation of Perseus. The Double Cluster (also known as Caldwell 14) is the common name for the naked-eye open clusters NGC 869 and NGC 884 (often designated h Persei and χ Persei, respectively), which are close together in the constellation Perseus. NGC 869 and NGC 884 both lie at a distance of 7500 light years. NGC 869 has a mass of 3700 solar masses and NGC 884 weighs in at 2800 solar masses; however, later research has shown both clusters are surrounded with a very extensive halo of stars, with a total mass for the complex of at least 20,000 solar masses.

Based on their individual stars, the clusters are relatively young, both 12.8 million years old. In comparison, the Pleiades have an estimated age ranging from 75 million years to 150 million years. There are more than 300 blue-white super-giant stars in each of the clusters. The clusters are also blueshifted, with NGC 869 approaching Earth at a speed of 39 km/s and NGC 884 approaching at a similar speed of 38 km/s. Their hottest main sequence stars are of spectral type B0.

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Status	Advanced failed
Started	...
Astrometry.net job	6583315
PixInsight job	SSC1EPS5BVKVGMUY3MM26NOMQOX0OAE5
PixInsight queue size	n/a
PixInsight stage	PLATE_SOLVING_IMAGE

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NGC 884 with Ha-Clouds

NGC 884 with Ha-Clouds

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NGC 884 with Ha-Clouds

NGC 884 with Ha-Clouds

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