NGC 922

The galaxy discovered by Friedrich William Herschel in 1784

NGC 922 Is located in Cupola One of Barred spiral galaxy , 150 million light years away from the earth. Right ascension It is 2h25m04.400s, Declination Yes - 24d47m17.46s^[1] 。

Chinese name: NGC 922
Classification: Barred spiral galaxy
Discoverer: a Frederick William Herschel /a
Discovery time: November 17, 1784
Apparent magnitude: twelve point two one
Right ascension: 2:25:04.40
Declination: -24d47m17.46s

Distance from ground: 150 million light years
Constellations: Cupola
Apparent diameter: +0d01m54s
Radius: 37500 light years
Red shift: zero point zero one zero two seven zero
Classification of galaxies: SBc:r
radial velocity: 3063km/s

NGC 922 Is located in Cupola One of Barred spiral galaxy , 1.5 from the earth Billion light years 。 The distorted and ringed structure in the galaxy is due to a small Galaxy It is caused by collision with the center of NGC 922. Like pebbles thrown into a pond, the impact sent out high-density gas ripples from the center of some stars, that is, the impact point.

However, using Chandra X-ray telescope When observing NGC 922, we can see some bright X-ray Lumps, which may be huge black hole 。 Surprisingly, there are quite a few large masses in NGC 922 black hole However, the gas composition in NGC 922 is rich Heavy element These elements are not conducive to the formation of high-quality stars. This discovery determines to continue to study this subject^[2] 。

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