Orbit (오빛) is LOONA’s official fan club name. It was officially established on July 9, 2018 after the first recruitment closed.
According to a news article, Orbit means that the fan club is creating a path of orbit where LOONA can grow. Also, 오 is read as "oh" and 빛 as "bit" which translated to English is "light", and together makes "Oh! Light" where oh is the exclamation and light representing what LOONA is to fans.
이달의 소녀 공식 팬클럽명 '오빛(Orbit)'은 이달의 소녀가 성장할 수 있는 궤도를 만들어주는 팬클럽의 의미를 담고 있다"면서 "한글로 '오빛'으로 씀으로써 감탄사 오와 빛을 붙여 이달의 소녀에 빛을 비추어주는 존재임을 상징한다"고 밝혔다.
The first recruitment first opened on Jun 15, 2018. It costed ₩40,000 (~$36 at the time) to become an official member and recieve the kit. Members were also given access to LOONA's official app.
Included with the kit were:
- Album, titled "Orbit 1.0", with 3 unreleased song
- "지금 더 좋아해 (I Like You More Now)"
- "Egoist (English Ver.)"
- "Hi High" remix
- 72 page Notebook (130x180mm)
- 40 page Photobook (130x180mm)
- Message Card from each member (90x120mm)
- Ballpoint Pen (140x10mm)
- 2 Logo Badges (Ver. 1: 20x20mm, Ver. 2: 20x6mm)
- Fanclub Card (85x54mm)
- Dust Bag (330x450mm)
- Before the reveal of the name Orbit, international fans of LOONA called themselves "Loonatics". ODD EYE CIRCLE later released "LOONATIC (English Version)" as a gift to fans. 
- ↑ "이달의소녀, 공식 팬클럽명 '오빛(Orbit)' 확정…"빛을 비춰주는 존재" http://news.chosun.com/site/data/html_dir/2018/07/11/2018071100622.html
- ↑ Mix & Match Album Description