Uchinoura Space CentreActive

Japan's first launch site and home of its first orbital success — the Osumi satellite in 1970, making Japan the fourth country to reach orbit independently. The Hayabusa asteroid-sample-return missions launched from here.

31.2516°N
Latitude
131.0819°E
Longitude
200 m
Elevation
1970
First orbital

Site history

Owner / operator: JAXA Founded: 1962 First orbital launch: 1970
Total orbital launches: ~30+ Annual launch rate: ~2/year Current vehicles: Epsilon, SS-520
Japan's first launch site and home of its first orbital success — the Osumi satellite in 1970, making Japan the fourth country to reach orbit independently. The Hayabusa asteroid-sample-return missions launched from here.

Orbital mechanics from 31.2516°N

A launch site's latitude determines which orbits are achievable and at what fuel cost. Uchinoura at 31.2516°N sets the following constraints:

Min inclination (due east)
31.3°
A rocket launched due east enters an orbit inclined at exactly the site's latitude. Going lower requires a fuel-expensive plane change.
ISS reachable?
Yes — 51.6°
A 20.3° dog-leg manoeuvre is needed from this latitude to reach the ISS's 51.6° orbit.
Sun-sync (SSO)
Achievable
Sun-synchronous orbits (~97–98°) require a slight retrograde tilt. A small retrograde azimuth is needed to reach the required ~97° inclination.
GTO efficiency
Standard
Geostationary transfer orbit requires a low inclination. A 31.3° plane change is needed to reach the GEO belt, costing payload mass.

Satellite train visibility from Uchinoura

From 31.2516°N, Uchinoura can reach 4 Starlink inclination shells: 43°, 53°, 70°, 97.6° SSO (polar).

Trains launched to higher inclinations are visible from more of the world. A 97° SSO train from Uchinoura would be visible at virtually every latitude; a 53° train is visible from latitudes up to ±51° (primarily) — mostly tropical and subtropical regions. In the hours after launch — before satellites raise their orbits — a tight train of 20–60 bright dots crosses the sky roughly every 90 minutes. Use OrbitalNodes' Starlink tracker for exact train pass times.

Orbital coverage — which latitudes can satellites from Uchinoura fly over
90°S60°S30°SEquator30°N60°N90°N ISS 51.6° Uchinoura Min inclination (31.3°) ISS band (±51.6°)

Uchinoura — Launch Site FAQ

Where is Uchinoura and who operates it?

Uchinoura Space Centre is located at 31.2516°N, 131.0819°E in Kagoshima, Japan. It is owned and operated by JAXA. The site has conducted approximately 30 orbital launches since its first in 1970.

What rockets launch from Uchinoura?

Current vehicles operating from Uchinoura Space Centre include Epsilon, SS-520. Primary customers are JAXA, launching Scientific missions, small satellites, deep-space probes.

What orbits can Uchinoura reach?

At 31.2516°N, Uchinoura's minimum achievable inclination is 31.3° (due-east launch). The ISS at 51.6° is reachable with a dogleg manoeuvre. The site can reach orbits between roughly 31° and 98° inclination.

Can I watch launches from Uchinoura?

Yes — Uchinoura Space Centre hosts a moderate cadence of approximately 2 orbital launches per year. Check the operator's website for public viewing arrangements and launch windows.

What satellites can I see that were launched from Uchinoura?

Satellites regularly launched from Uchinoura include Scientific missions, small satellites, deep-space probes. The ISS was supplied or crew-launched from sites at similar latitudes. Use OrbitalNodes to track any visible satellite in real time.

Why was Uchinoura built at this latitude?

Uchinoura at 31.2516°N was positioned to access the full range of low-Earth orbits including the ISS corridor. The site has been operational since 1970.

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