SDS-4 - Biblioteka.sk

SDS-4
Spacecraft properties

Mission type	Technology
Operator	JAXA
COSPAR ID	2012-025C
SATCAT no.	38339


Spacecraft type	SDS
Launch mass	50 kilograms (110 lb)^[1]


Start of mission
Launch date	17 May 2012, 16:39 (2012-05-17UTC16:39Z) UTC^[2]
Rocket	H-IIA 202
Launch site	Tanegashima Yoshinobu 1
Contractor	Mitsubishi


End of mission
Deactivated	1 July 2021 (2021-08)


Orbital parameters
Reference system	Geocentric
Regime	Low Earth
Perigee altitude	666 kilometres (414 mi)
Apogee altitude	678 kilometres (421 mi)
Inclination	98.23 degrees
Period	98.05 minutes
Epoch	30 October 2013, 08:31:20 UTC^[3]

SDS-4 (Small Demonstration Satellite 4) is a small satellite (50 cm cube with mass of 50 kg) developed by JAXA. It was launched as a secondary payload on the Shizuku mission on 17 May 2012 UTC.^[4]

In 2019, its ownership was transferred to the SKY Perfect JSAT Corporation (JSAT).^[5] Operation was terminated by the end of June 2021.^[6]

There are four rather specialised systems on the satellite:

SPAISE (SPace-based Automatic Identification SystEm) - test on-orbit a receiver for picking up signals from Automatic Identification System transmitters on ships well out to sea, and determine how space-based reception is affected by interference between nearby transmitters and by environmental conditions.
FOX (Flat heat-pipe on-orbit experiment) - to test whether flat heat pipes work in space in accordance with theoretical models and with tests on Earth
IST (In-flight experiment of Solar absorption rate with THERME) - to acquire information about the effect of sunlight in space on thermal coatings, re-flying the THERME instrument developed by CNES for testing different thermal coatings ^[7]
QCM (Quartz Crystal Microbalance) - to test whether a Japanese-manufactured quartz microbalance works well in monitoring contamination of the satellite from assembly to on-orbit operation.

References

^ Krebs, Gunter. "SDS 4". Gunter's Space Page. Retrieved 31 October 2013.
^ McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 31 October 2013.
^ "SDS-4 Satellite details 2012-025C NORAD 38339". N2YO. 30 October 2013. Retrieved 31 October 2013.
^ "Small Demonstration Satellite-4 (SDS-4)". JAXA. Retrieved 3 December 2019.
^ "JAXA and SKY Perfect JSAT Conclude an Agreement on the Transfer of the Small Demonstration Satellite-4". JAXA. 24 April 2019. Retrieved 3 December 2019.
^ 2022年3月期第1四半期決算説明会 (PDF) (in Japanese). SKY Perfect JSAT Holdings Inc. 4 August 2021. Retrieved 7 August 2021.
^ "In-flight thermal coatings ageing on the THERME experiment" (PDF).

v t e ← 2011 Orbital launches in 2012 2013 →
January	Ziyuan III-01, VesselSat-2 Fengyun 2-07 USA-233 Progress M-14M
February	Navid LARES, ALMASat-1, Xatcobeo, UniCubeSat-GG, ROBUSTA, e-st@r, Goliat, MaSat-1, PW-Sat SES-4 Compass-G5 MUOS-1
March	Edoardo Amaldi ATV Intelsat 22 Kosmos 2479 Apstar 7
April	USA-234 Kwangmyŏngsŏng-3 Progress M-15M YahSat-1B RISAT-1 Compass-M3, Compass-M4
May	USA-235 Tianhui 1B Yaogan 14, Tiantuo 1 Soyuz TMA-04M JCSAT-13, Vinasat-2 Kosmos 2480 Shizuku, Kompsat 3, SDS-4, Horyu 2 Nimiq 6 SpaceX COTS Demo Flight 2, New Frontier Fajr ChinaSat 2A Yaogan 15
June	Intelsat 19 NuSTAR Shenzhou 9 USA-236 / Quasar 18 USA-237 / Orion 8
July	EchoStar XVII, MSG-3 SES-5 Soyuz TMA-05M Kounotori 3 (Raiko, We-Wish, Niwaka, TechEdSat, F-1) Kanopus-V1, BelKA-2, Zond-PP, TET-1, exactView-1 Tianlian I-03 Gonets-M No.3, Gonets-M No.4, Kosmos 2481, MiR
August	Progress M-16M (Sfera-53) Intelsat 20, HYLAS 2 Telkom-3, Ekspress-MD2 Intelsat 21 RBSP-A, RBSP-B
September	SPOT 6, PROITERES, mRESINS USA-238, SMDC-ONE 1.1, SMDC-ONE 1.2, AeroCube 4, AeroCube 4A, AeroCube 4B, Aeneas, Re, CSSWE, CP5, CXBN, CINEMA 1 MetOp-B Compass-M5, Compass-M6 Astra 2F, GSAT-10 VRSS-1
October	USA-239 SpaceX CRS-1, Orbcomm-2 David, Sif Shijian 9-01, Shijian 9-02 Intelsat 23 Soyuz TMA-06M Compass G6 Progress M-17M
November	Luch 5B, Yamal-300K Eutelsat 21B, Star One C3 Meridian 6 Huanjing 1C EchoStar XVI Yaogan 16A, Yaogan 16B, Yaogan 16C ChinaSat 12
December	Pléiades-HR 1B Eutelsat 70B Yamal-402 USA-240 Kwangmyŏngsŏng-3 Unit 2 Göktürk-2 Soyuz TMA-07M Skynet 5D, Mexsat Bicentenario
Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ). Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).

Japanese space program

Italics indicates projects in development.
Symbol ^† indicates failed projects.
~~Strikethrough lines~~ indicate cancelled projects.

Space agencies

National space agencies	JAXA former ISAS NAL NASDA NICT JSS
Joint development partners	United States NASA¹ ESA² Italy ASI³ Canada CSA⁴ Russia Roscosmos⁵ Brazil AEB⁶ INPE⁷ India ISRO⁸

Astronomical observation

Past	Akari ASCA ASTRO-E^† ~~Astro-G~~ CORSA^† Ginga Hakucho HALCA Hinotori Hitomi^† ~~SPICA~~ Suzaku Tenma Yohkoh
Active	Hinode Hisaki XRISM¹
Future	ATHENA² SOLAR-C¹ GREX-PLUS [ja] HiZ-GUNDAM [ja] LAPYUTA LiteBIRD Nancy Grace Roman Space Telescope¹ Nano-JASMINE Small-JASMINE

Communications satellites, broadcasting satellites and satellite navigation systems

Past	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
Active	Kirameki 1 2 Michibiki 1 2 3 4 1R MTSAT N-STAR c d JDRS
Future	DSN 3 QZS 5 6 7

Earth observation

Past	Akebono Daichi 1 3^† Denpa Fuyo-1 Jikiken Kyokko Midori I II Momo 1 1b Ohozora Taiyo TRMM¹ Ume 1 b Geotail¹
Active	Aqua^1,7 Arase ASNARO 1 2 Daichi 2 4 EarthCARE² GPM¹ Himawari Ibuki original 2 Shikisai Shizuku
Future	GOSAT-GW PMM

Engineering tests

Past	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 RAISE 2 3^† ~~PETSAT~~ RAPIS-1 Ryusei SERVIS-1 SERVIS-2 SDS-1 SFU Shinsei ~~SmartSat-1~~ Tansei 1 2 3 4 Tasuki Tsubame Tsubasa USERS
Active	Ajisai Reimei SDS-4
Future	BEAK ETS-IX G-SATELLITE SERVIS-3

Human spaceflight

Past	~~Fuji crewed spacecraft~~ ~~HOPE-X~~ H-II Transfer Vehicle
Active	International Space Station (ISS) & Japanese Experiment Module (Kibō)^1,2,3,4,5,6
Future	HTV-X Japanese Space Station Module (Mitsui) Lunar Gateway^1,2,4

Space probes

The Moon

Past	Hakuto-R Mission 1^† Hiten ~~Lunar-A~~ Kaguya (SELENE) OMOTENASHI^† ~~SELENE-2~~
Active	EQUULEUS Smart Lander for Investigating Moon (SLIM)
Future	Hakuto-R Mission 2 HERACLES^2,4 Lunar Cruiser Lunar Polar Exploration Mission⁸ (LUPEX) Yaoki

Others

Past	Hayabusa ~~Hayabusa Mk2~~ Nozomi^† PROCYON^† Sakigake Shin'en^† Suisei
Active	Akatsuki BepiColombo (MMO/Mio)² Hayabusa2 Jupiter Icy Moons Explorer²
Future	Comet Interceptor² DESTINY+ Dragonfly¹ Hera² MELOS Martian Moons eXploration Next Generation Small-Body Sample Return TEREX

Reconnaissance satellites

Past	IGS-Optical 1 2 Experimentally 3 IGS-Radar 1 2
Active	IGS-Optical 3 4 5 6 Experimentally 5 IGS-Radar 3 4 Spare 5 6
Future	IGS-Optical 7 8 IGS-Radar 7 8

Private small satellites

Past	CosMoz CUTE 1.7+APD Fuji 1 2 Hayato HIBARI HIT-SAT Kagayaki Kanta-kun (WEOS) Kūkai Maido-1 Negai☆″ Niwaka RAIKO Waseda-SAT2 WE WISH
Active	CUTE 1 1.7+APDII Fuji-3 Hitomi Hodoyoshi 1 2 3 4 Horyu 2 Kiseki PROITERES Raijin Raijin-2 SEEDS SOCRATES XI IV V
Future	DRUMS KITSUNE OPUSAT-II QSAT-EOS RSP-01 SOMESAT SpaceTuna1 SPROUT TSUBAME Wisseed Sat WNI satellite

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