- Stars with a name
- Arkab Posterior
Arkab Posterior
β² Sagittarii
Arkab Posterior is a yellow-white giant, in the constellation Sagittarius. The light you see from it tonight left it around 1892.
Where to find it
From mid-northern latitudes, such as New York, Rome or Tokyo, it only ever stays low over the southern horizon.
Visible to the naked eye away from the brightest lights. Apparent magnitude 4.27.
What it’s like
It gives off 29 times as much light as the Sun.
Its surface is at about 7,200 degrees.
It is 134.2 light years away: 1269 trillion kilometres.