OREX

For the company traded under the stock symbol OREX, see Orexigen Therapeutics.

Ryusei
Spacecraft properties

Mission type	Technology
Operator	NASDA
COSPAR ID	1994-007A
SATCAT №	22978
Website	www.jaxa.jp/projects/rockets/orex/index_e.html
Mission duration	2 hours

Manufacturer	NASDA
Launch mass	865 kilograms (1,907 lb)
Landing mass	761 kilograms (1,678 lb)

Start of mission
Launch date	3 February 1994, 22:20 (1994-02-03UTC22:20Z) UTC^[1]
Rocket	H-II
Launch site	Tanegashima Yoshinobu 1

End of mission
Landing date	4 February 1994, 00:30 (1994-02-04UTC00:31Z) UTC^[2]
Landing site	Pacific Ocean

Orbital parameters
Reference system	Geocentric
Regime	Low Earth
Perigee	448 kilometres (278 mi)
Apogee	458 kilometres (285 mi)
Inclination	30.5 degrees
Period	93.64 minutes
Epoch	3 February 1994^[3]

OREX (Orbital Re-entry Experiment) was a NASDA re-entry demonstrator prototype which was launched in 1994 on the H-II launcher; the satellite was renamed Ryūsei (りゅうせい, Shooting star). It was a precursor for the Japanese space Shuttle Hope.

OREX tested various communications systems, heating profiles and heat shielding components for Hope.

References

↑ McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 9 November 2013.
↑ McDowell, Jonathan (7 February 1994). "Issue 183". Jonathan's Space Report. Retrieved 9 November 2013.
↑ McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 9 November 2013.

External links

Description of OREX on JAXA web site

Japanese space program

Organizations

JAXA
- former ISAS
- NAL
- NASDA
USEF
NICT

Earth observation

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

In operation	Akebono GEOTAIL¹ Himawari Aqua¹⁷ TRMM¹ Ibuki Shizuku GPM¹ Daichi-2

Planned	GCOM-C ERG EarthCARE² GOSAT-2 ALOS-3 ASNARO

Communications,
broadcasting and
positioning

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

In operation	Kodama Kizuna N-STAR (c) MTSAT QZSS Michibiki

Planned	QZSS QZS-2 QZS-3 QZS-4 DRTS-2

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 Reimei Kiku-8 IKAROS SDS-4

Planned	SERVIS-3 SLATS

Cancelled	SmartSat-1 PETSAT

Private
miniaturized satellites

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

In operation	Fuji-3 CUTE 1 1.7+APDII XI IV V SEEDS Raijin Kiseki Hitomi Horyu 2 PROITERES RAIKO FITSAT-1

Planned	WNI satellite SPROUT TSUBAME QSAT-EOS SOMESAT

Astronomical
observation

Completed	Taiyo Hakucho Hinotori Tenma Ginga Yohkoh ASCA HALCA Akari Suzaku

In operation	Hinode Hisaki Hitomi

Planned	Nano-JASMINE LiteBIRD WFIRST¹ SPICA² ATHENA²

Cancelled	Astro-G

Lunar and
planetary exploration

Completed	Sakigake Suisei Hiten Hayabusa Kaguya (SELENE)

In operation	Akatsuki Hayabusa 2 PROCYON

Failed	Nozomi Shin'en

Planned	BepiColombo (MMO)² SLIM JUICE² MMX Trojan asteroid exploration MELOS

Cancelled	Lunar-A

Reconnaissance

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

In operation	IGS-Optical 2 3 4 Experimentally 5 IGS-Rader 3 4

Planned	IGS-Optical 5 6 IGS-Rader 5 6

Human spaceflight

Completed	H-II Transfer Vehicle 1 2 3 4 5

In operation	International Space Station (ISS) & Kibo¹²³⁴⁵⁶

Planned	H-II Transfer Vehicle 6 7 8 9 X1

Cancelled	HOPE-X Fuji manned spacecraft

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

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Payloads are separated by bullets ( · ), launches by pipes ( \| ). Manned flights are indicated in bold text. Uncatalogued launch failures are listed in italics. Payloads deployed from other spacecraft are denoted in brackets.

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