Kpop Wiki
Kpop Wiki

Catch your eye, catch your mind. Hello, we are Kep1er!
(Catch your eye, catch your mind. 안녕하세요, 케플러입니다!)[1]


Kep1er (케플러; read as Kepler) is a nine-member project girl group under WAKEONE and Swing Entertainment. Formed through Mnet's reality survival show Girls Planet 999, they made their debut on January 3, 2022 with their first mini album, First Impact.

Their name combines 'Kep', which means catching dreams, and the number 1, which means the nine girls coming together as one to be the best. It is also a reference to the planet 'Kepler', the Kepler space telescope and inspired by German astronomer Johannes Kepler.

They will be active for roughly two and a half years on a special contract before it ends sometime in July 2024.[2]


2021: Girls Planet 999 and pre-debut

On January 11, Mnet released a teaser about the the upcoming auditions for the future competitive girl group reality show, Girls Planet 999.[3] It would consist of female contestants from or representing Korea, China, and Japan who all shared the same dream of debuting.

Girls Planet 999 premiered on August 6, while the live finale was broadcasted on October 22, with the girls who ranked in the top nine to debut in the show's product group Kep1er. During the finale, nine different contestants were revealed to make their debut; Kim Chaehyun ranked first overall, presumably becoming the group's future center, Huening Bahiyyih ranked second overall, Choi Yujin ranked third, Kim Dayeon ranked fourth, Seo Youngeun ranked fifth, Kang Yeseo ranked sixth, Ezaki Hikaru ranked seventh, Sakamoto Mashiro ranked eighth, and finally, Shen Xiaoting ranked ninth overall and was the last contestant revealed to debut.

On October 22, following the conclusion of Girls Planet 999, they opened the staff and group's Twitter, Instagram, and Facebook accounts.[4] On the group's social media accounts, a teaser was posted showcasing the group's official logo which had previously been revealed during the final episode of the show.[5]

On October 25, an article was published on Naver, revealing that the group would carry out their activities as a group for roughly the next two and a half years and are currently already starting preparations for their debut album.[2]

The group's fan cafe and V Live channel officially opened on November 2 and 3, respectively.[6][7] On November 4, Kep1er held their first V Live.[8] On November 9, the group’s first Youtube video was uploaded onto their Youtube channel.[9]

2022: Debut with First Impact, fandom name and colors, Queendom 2

On November 22, 2021, the group's website officially opened, revealing that the group will debut in December 2021.[10] On November 24, 2021, the group's SNS posted teaser photos and announced that they will make their debut on December 14, 2021. Later on November 29, 2021, it announced that they will debut with their first mini album, First Impact. However, on December 5, 2021, it was announced that the group's debut will be postponed after a staff member tested positive to COVID-19. On December 8, 2021, it was announced through the group's fan cafe that the album would be postponed to January 3, 2022.[11]

On January 3, the group announced their fandom name and colors.[12]

On February 21, Mnet revealed that the group will be participating in their reality show, Queendom 2, which is set to begin airing on March 31.[13]


Rank Name Nationality[14] Position(s)[15] Agency
English Korean Japanese Chinese
3 Yujin 유진 ユジン 有眞 Korean Leader Cube Entertainment
9 Xiaoting 샤오팅 シャオティン 小婷 Chinese Lead Dancer TOP CLASS Entertainment
8 Mashiro 마시로 舞白 舞白 Japanese Co-Leader 143 Entertainment
1 Chaehyun 채현 チェヒョン 采炫 Korean Main Vocalist, Center WAKEONE
4 Dayeon 다연 ダヨン 多娟 Korean Main Dancer Jellyfish Entertainment
7 Hikaru 히카루 ひかる Japanese N/A Avex Artist Academy
2 Huening Bahiyyih 휴닝바히에 ヒュニン・バヒエ 休宁巴伊叶 Korean-American N/A IST Entertainment
5 Youngeun 영은 ヨンウン 永恩 Korean Main Vocalist Biscuit Entertainment
6 Yeseo 예서 イェソ 睿序 Korean Maknae 143 Entertainment


Mini albums

Participation releases


Concert participation

  • HallyuPopFest London 2022 (2022)


Reality shows

  • Kep1er-view (Mnet, 2021)
  • Kep1er Zone (U+Idol Live, 2022)
  • Queendom 2 (Mnet, 2022) - contestant[16]


  • S2ND (2022)

Awards and nominations

Main article: List of awards and nominations received by Kep1er







Official links