Shortly:
- Format: DIN A2 (420 x 594 mm)
- Material: 250 g glossy quality print
- A MUST for space lovers!
Decorative print of an image from the Hubble telescope. ©NASA
Stephan's Quintet is a group of five galaxies in the constellation Pegasus discovered on September 22, 1877 by the French astronomer Édouard Jean-Marie Stephan. D
The group of galaxies consists of the galaxies NGC 7317, NGC 7318A, NGC 7318B, NGC 7319 and NGC 7320. The galaxies NGC 7317 to NGC 7319 form a spatially close, interacting system at a distance of about 300 million light years. Due to the mutual gravitational effect, the spiral arms of the galaxies are irregularly deformed.
NGC 7320 was originally assigned to Stephan's quintet by Stephan, but due to a significantly lower heliocentric radial relative velocity (~800 km/s compared to ~6500–7000 km/s for the other galaxies), this galaxy is a foreground galaxy in only 35 Millions of light-years away, which coincides with Stephan's quintet simply because of the projection. Instead, today NGC 7320C is added to the quintet, leaving it five galaxies.
The galaxies of Stephan's quintet have a brightness of about 13 mag. To observe them you need a telescope with at least 20 cm aperture.
