Ōsumi

Ōsumi (satellite)

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Ōsumi
Orbital elements

Operator	Institute of Space and Aeronautical Science, University of Tokyo (now part of JAXA)
Mission type	Earth science
Satellite of	Earth
Launch date	February 11, 1970 at 04:25 UTC
Launch vehicle	Lambda 4S-5
Orbital decay	August 2, 2003
COSPAR ID	1970-011A
Mass	24.0 kg^[1]
Power	10.3 watt^[1]
Eccentricity	.262379^[2]
Inclination	31.0°^[2]
Apoapsis	5,140 km^[2]
Periapsis	350 km^[2]
Orbital period	144.0 minutes^[2]

Ōsumi (or Ohsumi) is the name of the first Japanese artificial satellite put into orbit, named after the Ōsumi Province in the southern islands of Japan. It was launched on February 11, 1970 at 04:25 UTC with a Lambda 4S-5 rocket from Uchinoura Space Center by Institute of Space and Aeronautical Science, University of Tokyo, now part of the Japan Aerospace Exploration Agency (JAXA). Japan became the fourth nation after the USSR, USA and France to release an artificial satellite into successful orbit.

Parameters

The Ōsumi satellite weighed 24.0 kilograms.^[1] It orbited the Earth with a perigee of 323 km and an apogee of 2,440 km, and with an inclination of 31.0°.^[3] Ōsumi decayed from orbit and burned up in the atmosphere on August 2, 2003.^[4]

References

^ ^a ^b ^c "Ohsumi". NASA NSSDC Master Catalog. NSSDC, NASA. http://nssdc.gsfc.nasa.gov/nmc/spacecraftDisplay.do?id=1970-011A. Retrieved 2008-02-12.
^ ^a ^b ^c ^d ^e "Trajectory Details". NASA NSSDC Master Catalog. NSSDC, NASA. http://nssdc.gsfc.nasa.gov/nmc/spacecraftOrbit.do?id=1970-011A. Retrieved 2008-02-12.
^ "Osumi". Encyclopedia Astronautica. Astronautix. http://www.astronautix.com/craft/osumi.htm. Retrieved 2008-03-02.
^ "SPX-598". SPACEWARN Bulletin. NSSDC, NASA. http://nssdcftp.gsfc.nasa.gov/miscellaneous/spacewarn/spx.598. Retrieved 2008-03-02.

External links

Official Osumi webpage
Image of Osumi: Kiwi-Osumi-image

Japanese space program

Organizations

JAXA
- former ISAS
- NAL
- NASDA
USEF
NICT

Weather observation

Completed	Himawari (1 2 3 4 5)

In operation	Himawari 6

In orbit	Himawari 7

Planned	Himawari 8 Himawari 9

Earth observation

Completed	Kyokko Jikiken Denpa Ohozora Ume 1 b Fuyo-1 Momo 1 1b Midori I II Daichi

In operation	Akebono Ibuki GEOTAIL¹ Aqua¹⁷ TRMM¹

Planned	GCOM-W1 GCOM-C1 GPM¹ EarthCARE² Daichi 2 3 ASNARO

Communications,
broadcasting and
positioning

Completed	Sakura (1 2a 2b 3a 3b) Yuri 1 2a 2b 3a 3b BS 2X 3H 3N Kakehashi Superbird A A1 B1 A2 JCSAT 1 2 3 R N-STAR a b Kirari MBSat

In operation	Kodama Kizuna Superbird C B2 D C2 B-SAT 1a 1b 2a 2c 3a 3b JCSAT 1B 4A 110 2A 5A 3A RA 85 N-STAR (c) QZSS Michibiki

Planned	QZSS QZS-2 QZS-3 B-SAT 3c JCSAT 12 110R 13

Engineering tests

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

In operation	Ajisai Kiku-8 Reimei

Planned	PETSAT SDS-4

Cancelled	SmartSat-1

Private miniaturized satellites

Completed	Fuji 1 8 2 Kanta-kun (WEOS) HIT-SAT CUTE 1.7+APD Maido-1 Kūkai Kagayaki Negai* Waseda-SAT2 Hayato

In operation	Fuji-3 CUTE 1 1.7+APDII XI IV V SEEDS Raijin Kiseki Hitomi

Planned	WNI satellite Horyu 1 2 SPROUT PROITERES TSUBAME QSAT-EOS SOMESAT RAIKO FITSAT1 WE WISH

Astronomical observation

Completed	Hinotori Tenma Ginga ASCA HALCA Yohkoh Taiyo Hakucho Akari

In operation	Suzaku (Astro-EII) Hinode

Planned	Astro-H Astro-G SPICA SPRINT-A SOLAR-C Nano-JASMINE ERG

Unmanned lunar and
planetary exploration

Completed	Hayabusa Hiten Kaguya (SELENE) Sakigake Suisei

In operation	Akatsuki IKAROS

Failed	Nozomi Shin'en

Planned	BepiColombo² Hayabusa 2 SELENE-2

Cancelled	Lunar-A

Reconnaissance

Completed	IGS-Optical (Experimentally 3) IGS-Radar 1 2

In operation	IGS-Optical 1 2 3 4 IGS-Rader 3

Planned	IGS-Optical Experimentally 5 5 6 IGS-Rader 4 5 6

Human spaceflight

Completed	H-II Transfer Vehicle 1 2

In operation	International Space Station (ISS) & Kibo¹²³⁴⁵⁶

Planned	H-II Transfer Vehicle 3 4 5 6 7

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

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