Mission typeTechnology demonstration
OperatorRyman Sat Project
COSPAR ID1998-067SB Edit this at Wikidata
SATCAT no.47925
Spacecraft properties
Spacecraft typeCubeSat
Start of mission
Launch date20 February 2021, 17:36:50 UTC
RocketAntares 230+
Launch siteMARS, Pad 0A
Deployed fromISS Kibō
Delivered by Cygnus NG-15
Deployment date14 March 2021
End of mission
Decay date10 June 2022
Orbital parameters
Reference systemGeocentric
RegimeLow Earth

RSP-01, nicknamed Selfie-sh was a nanosatellite developed by Ryman Sat Project. RSP-01 launched from Wallops Flight Facility on board a Cygnus spacecraft on 20 February 2021.[1][2]

The satellite decayed from orbit on 10 June 2022.[3]


RSP-01 was Ryman Sat Project's second satellite. It was a 1U CubeSat weighing around 1.3 kg, and was equipped with an arm that could extend up to 10 cm.[4] The CubeSat had three transceivers.[2] The on board computer used Arduino and Raspberry Pi.[5]

The project began in 2017, and development was completed by 2020.[6][7] Part of the development cost was covered by a crowdfunding campaign in 2019.[8][9] The RSP-01 project was led by Ryuichi Mitsui and Shuichi Ito.[5]


RSP-01's main mission was to extend an arm carrying a camera, and photograph RSP-01 with the Earth in the background, taking selfies.[5][9] The arm had a pantograph design to allow contraction after being extended.[2]

Additionally, RSP-01 conducted image recognition by machine learning, and also had a chat function.[2][9] The CubeSat used its reaction wheel to demonstrate attitude control.[2]

See also


  1. ^ "こちら超小型人工衛星RSP-01: そして宇宙へ JAXA引き渡しから打ち上げ、宇宙空間への放出まで" (in Japanese). February 18, 2021. Retrieved 2021-02-21.
  2. ^ a b c d e Otsuka, Minoru (February 18, 2021). "自撮り衛星「RSP-01」がいよいよ打ち上げ! 趣味の宇宙開発が実現するか?". Mynavi news (in Japanese). Retrieved 2021-02-21.
  3. ^ "RSP-01". 15 June 2022. Retrieved 15 June 2022.
  4. ^ "宇宙愛好者らのリーマンサット、ISSに向け超小型衛星打ち上げへ". Sankei Shimbun (in Japanese). February 18, 2021. Retrieved 2021-02-21.
  5. ^ a b c Otsuka, Minoru (November 6, 2019). "宇宙開発が趣味? - リーマン達が作る衛星の初号機がもうすぐ宇宙へ!". Mynavi news (in Japanese). Retrieved 2021-02-21.
  6. ^ "RSP-01のキックオフミーティングを開催しました!" (in Japanese). December 14, 2017. Retrieved 2021-02-21.
  7. ^ "文系女子が人工衛星開発を追いかけてみた【RSP-01 断髪式編】" (in Japanese). February 15, 2021. Retrieved 2021-02-21.
  8. ^ "サラリーマンによる人工衛星を再び……悲願のミッション達成へ!" (in Japanese). September 2019. Retrieved 2021-02-21.
  9. ^ a b c Kishiro, Yasuyuki (May 7, 2020). "ことの始まりは、新橋の居酒屋だった――サラリーマンたちが宇宙に放つ超小型衛星「リーマンサット」". Mugendai (in Japanese). Retrieved 2021-02-21.