NGC 5548
Encyclopedia
NGC 5548 is a Type I Seyfert galaxy
Seyfert galaxy
Seyfert galaxies are a class of galaxies with nuclei that produce spectral line emission from highly ionized gas, named after Carl Keenan Seyfert, the astronomer who first identified the class in 1943...

 with a bright blue/white core. It is approximately 220 million ly
Light Years
Light Years is the seventh studio album by Australian recording artist Kylie Minogue. It was released on 25 September 2000 by Parlophone and Mushroom Records. The album's style was indicative of her return to "mainstream pop dance tunes"....

 away and appears in the constellation Boötes
Boötes
Boötes is a constellation in the northern sky, located between 0° and +60° declination, and 13 and 16 hours of right ascension on the celestial sphere. The name comes from the Greek Βοώτης, Boōtēs, meaning herdsman or plowman...

. This spiral galaxy's apparent magnitude is approximately 10.5. NGC 5548 is estimated to be 100,000 ly
Light Years
Light Years is the seventh studio album by Australian recording artist Kylie Minogue. It was released on 25 September 2000 by Parlophone and Mushroom Records. The album's style was indicative of her return to "mainstream pop dance tunes"....

 in diameter.

This galaxy was studied by the Multicolor Active Galactic Nuclei Monitoring
Multicolor Active Galactic Nuclei Monitoring
Multicolor Active Galactic Nuclei Monitoring or MAGNUM is project started in 1995, and with observations starting in 2000 using 2m reflecting telescope for scientific study of active galactic nuclei. The telescope is run by the University of Tokyo and other Japanese academic institutions. MAGNUM...

2m telescope.
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