NGC 6723 [SEP] constellation
NGC 6723
NGC 6723 is a globular cluster in the constellation Sagittarius. Its magnitude is given between 6 and 6.8, and diameter between 7 and 11 arcminutes, class VII with stars magnitude 14 and dimmer. It is near the border of Sagittarius and Corona Australis.
References.
- Robert Burnham, Jr, "Burnham's Celestial Handbook: An observer's guide to the universe beyond the solar system", vol 3, p.1558
External links.
- NGC 6723
globular cluster, NGC 6723, in the Milky Way's galactic halo
- 740 million years: 47 Tucanae, second-brightest globular cluster in the Milky Way, forms
- 750 million years: Galaxy IOK-1 a Lyman alpha emitter galaxy, forms. GN-108036 forms—galaxy is 5 times larger and 100 times more massive than the present day Milky Way illustrating the size attained by some galaxies very early on.
- 770 million years: Quasar ULAS J1120+0641, one of the most distant, forms. One