Orbital Period (album)
# Orbital Period (album)

Professional ratings :

| Review scores ||
| - | - |
| Source | Rating |
| AllMusic | |

Orbital Period is the fifth studio album by Bump of Chicken, released on December 19, 2007. The album features the singles "Planetarium", "Supernova/Karma", "Namida no Furusato", "Hana no Na", and "Mayday". Orbital period became the best-selling album two days in a row at debut, according to Oricon Style. It was the second best-selling album on its debut week.

## Personnel

* Fujiwara Motoo — vocals, guitar
* Masukawa Hiroaki — guitar
* Naoi Yoshifumi — bass
* Masu Hideo — drums
