STARS-EC

STARS-EC (Space Tethered Autonomous Robotic Satellite Elevator of CubeSat, COSPAR 1998-067SE, SATCAT 47928) was a nanosatellite developed by Shizuoka University, for the purpose of demonstrating space elevator tether technology. It was a 3U-size CubeSat, and could split into three separate satellites, connected via tethers. STARS-EC was launched on 20 February 2021, and was deployed from the International Space Station (ISS).[1] The deployment service of STARS-EC was provided by Mitsui Bussan Aerospace.[2]

The satellite decayed from orbit on 15 April 2022.[3]

## Contents

* 1 Mission
* 2 See also
* 3 References
* 4 External links

## Mission

STARS-EC's mission was to demonstrate space elevator tether technology using a 3U CubeSat. After deployment from the ISS, the satellite split into three separate spacecraft, each the size of a 1U CubeSat.[4] The spacecraft on each end was connected to the center satellite by an 11 m-long (36 ft) space tether, thus putting the satellites on the ends 22 m apart from one another.[2][5] The satellite in the center moved back and forth along the tether, demonstrating the orbital space elevator technology. Each spacecraft was equipped with a camera to monitor the elevator demonstration.[4]

## See also

* STARS
* STARS-II
* STARS-C
* OPUSAT-II
* RSP-01
* WARP-01

## References

1. ↑ "STARS Space Serviceによる静岡大学超小型衛星「STARS-EC」を搭載したロケットが2月21日打上成功" (Press release) (in 日本語). Mitsui Bussan Aerospace. February 26, 2021. Retrieved March 1, 2021.
2. ↑ 2.0 2.1 Wanezaki, Yuriko (February 18, 2021). "静岡大発ベンチャーが開発した超小型衛星がISSに向け2月21日に打ち上げへ" (in ja). Mynavi news. https://news.mynavi.jp/article/20210218-1738882/.
3. ↑ "STARS EC". N2YO.com. 15 April 2022. https://www.n2yo.com/satellite/?s=47928.
4. ↑ 4.0 4.1 "「宇宙エレベーター」実現向け挑戦 静大衛星５機目を発表" (in ja). The Shizuoka Shimbun. September 26, 2019. https://www.at-s.com/news/article/education/812656.html.
5. ↑ "宇宙エレベーター、実用化に向けた実験用衛星完成 静大" (in ja). The Asahi Shimbun. September 26, 2019. https://www.asahi.com/articles/ASN9V3321N9TUTPB019.html.

## External links

* Official project site Script error: The function "in_lang" does not exist.
* STARS Space Service

* v
* t
* e

Japanese space program

* JAXA
* former ISAS
* NAL
* NASDA
* NICT
* USEF

Astronomical
observation|

| Completed|

* Akari
* ASCA
* Ginga
* Hakucho
* HALCA
* Hinotori
* Suzaku
* Tenma
* Yohkoh

|

In operation|

* Hinode
* Hisaki

Failed|

* Hitomi

Planned|

* ATHENA2
* EUVST
* HiZ-GUNDAM
* LiteBIRD
* Nano-JASMINE
* Small-JASMINE
* SPICA2
* WFIRST1
* WSO-UV5
* XRISM1

Canceled|

* Astro-G

Communications,
broadcasting and
positioning|

| Completed|

* BS
* 2X
* 3H
* 3N
* Kakehashi
* Kirari
* Kizuna
* Kodama
* MBSat
* N-STAR
* a
* b
* Sakura (1
* 2a
* 2b
* 3a
* 3b)
* Yuri
* 1
* 2a
* 2b
* 3a
* 3b

|

In operation|

* Kirameki
* 1
* 2
* Michibiki
* 1
* 2
* 3
* 4
* MTSAT
* N-STAR
* c
* d

Planned|

* DSN
* 3
* JDRS
* QZS
* 1R
* 5
* 6
* 7

Earth observation|

| Completed|

* Akebono
* Daichi
* Denpa
* Fuyo-1
* Jikiken
* Kyokko
* Midori
* I
* II
* Momo
* 1
* 1b
* Ohozora
* Taiyo
* TRMM1
* Ume
* 1
* b

|

In operation|

* Aqua17
* Arase
* ASNARO
* 1
* 2
* Daichi-2
* GEOTAIL1
* GPM1
* Himawari
* Ibuki
* 2
* Shikisai
* Shizuku

Planned|

* ALOS
* 3
* 4
* EarthCARE2
* GOSAT-3

Engineering tests|

| Completed|

* Ayame
* 1
* 2
* DASH
* EXPRESS
* IKAROS
* Jindai
* Kiku
* 1
* 2
* 3
* 4
* 5
* 6
* 7
* 8
* LDREX
* 1
* 2
* LRE
* Micro LabSat-1
* Myojo
* Ohsumi
* Orizuru
* Ryusei
* SERVIS-1
* SERVIS-2
* SDS-1
* Shinsei
* SFU
* Tansei
* 1
* 2
* 3
* 4
* Tasuki
* Tsubasa
* USERS

|

In operation|

* Ajisai
* Reimei
* SDS-4
* Tsubame
* RAPIS-1

Planned|

* BEAK
* ETS-IX
* G-SATELLITE
* SERVIS-3
* Small Demonstration Satellite
* 2
* 3

Canceled|

* PETSAT
* SmartSat-1

Human spaceflight|

| Completed|

* H-II Transfer Vehicle
* 1
* 2
* 3
* 4
* 5
* 6
* 7

|

In operation|

* H-II Transfer Vehicle
* 8
* International Space Station (ISS) & Kibo123456

Planned|

* H-II Transfer Vehicle
* 9
* X1
* Lunar Gateway1245

Cancelled|

* Fuji crewed spacecraft
* HOPE-X

Lunar and
planetary exploration|

| Completed|

* Hayabusa
* Hiten
* Kaguya (SELENE)
* Sakigake
* Suisei

|

In operation|

* Akatsuki
* BepiColombo (MMO/Mio)2
* Hayabusa2

Failed|

* Nozomi
* PROCYON
* Shin'en

Planned|

* Comet Interceptor2
* DESTINY+
* EQUULEUS
* HERACLES24
* JUICE2
* Mars Terahertz Microsatellite
* MELOS
* MMX
* OMOTENASHI
* SLIM

Cancelled|

* Lunar-A
* SELENE-2

Proposed|

* OKEANOS

Private
miniaturized satellites|

| Completed|

* CosMoz
* CUTE
* 1.7+APD
* Fuji
* 1
* 2
* Hayato
* HIT-SAT
* Kagayaki
* Kanta-kun (WEOS)
* Kūkai
* Maido-1
* Negai☆″
* Niwaka
* RAIKO
* Waseda-SAT2
* WE WISH

|

In operation|

* CUTE
* 1
* 1.7+APDII
* Fuji-3
* Hitomi
* Horyu
* 2
* Kiseki
* PROITERES
* Raijin
* RISING-2
* SEEDS
* SOCRATES
* XI
* IV
* V

Planned|

* DRUMS
* QSAT-EOS
* SOMESAT
* SPROUT
* TSUBAME
* WNI satellite

Reconnaissance|

| Completed|

* IGS-Optical
* 1
* 2
* Experimentally 3
* IGS-Radar
* 1
* 2

|

In operation|

* IGS-Optical
* 3
* 4
* 5
* 6
* Experimentally 5
* IGS-Rader
* 3
* 4
* Spare
* 5
* 6

Planned|

* IGS-Optical
* 7
* 8
* IGS-Rader
* 7
* 8

* Italics indicates projects in development.
* Superscripts indicate joint development with1NASA, 2ESA, 3ASI, 4CSA, 5RKA, 6AEB and 7INPE.

* v
* t
* e

Orbital launches in 2021

January|

* Türksat 5A
* Q-PACE
* Passive Inspection CubeSat

February|

* Progress MS-16
* Cygnus NG-15 (STARS-EC * Maya-2 * GuaraníSat-1)
* Amazônia-1

April|

* Soyuz MS-18
* SpaceX Crew-2
* Tianhe
* Starlink 16 (60 satelites)
* Yaogan 34

May|

* Tianzhou 2

June|

* SpaceX CRS-22
* Shenzhou 12
* Progress MS-17
* Brik-II
* Starlink 17 (3 satellites)

Launches are separated by dashes ( – ), payloads by dots ( * ), multiple names for the same satellite by slashes ( / ). Cubesats are smaller.
Crewed flights are bolded. Launch failures are in italics. Payloads deployed from other spacecraft are (enclosed in brackets).

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