Constellations
The Keystone
In Hercules
6 looks for The Keystone
The constellation in a clear night sky over the hills: its lines draw themselves one on every beat, its real stars twinkle with the part of the song their colour answers, the Milky Way glows and a shooting star crosses on the big moments.
About The Keystone
- What it is
- A star pattern: Four stars at the heart of Hercules
- Family
- Famous star patterns
- Where
- The northern sky: seen best from north of the equator
- Highest in the sky
- At about 9 pm in July
- Centre
- Right ascension 16h 55m, declination +34° 37′
- The figure
- 4 stars joined by 4 lines
- Brightest star
- Rutilicus, magnitude 2.81
It sits in Hercules.
Its stars
Brightest first. A smaller magnitude is a brighter star; the visualizer sizes and colours each one by these.
- Rutilicus (ζ Her)mag 2.81
- π Hermag 3.16
- η Hermag 3.53
- ε Hermag 3.92
Every star's place, brightness and colour is the Yale Bright Star Catalogue's; the figure is the IAU's, through d3-celestial (credited on the licences page). Constellations template · Every constellation