China Aerospace Science and Technology CorporationLong March 4BLaunch Complex 7, Taiyuan Satellite Launch Center, People's Republic of China
Zi Yuan 1-1
Launched
October 14, 1999
Image: CASC
Summary
Zi Yuan 1-1 launched on a China Aerospace Science and Technology Corporation Long March 4B from Launch Complex 7, Taiyuan Satellite Launch Center, People's Republic of China on October 14, 1999. It was China Aerospace Science and Technology Corporation's 1st launch, 1st this year and humanity's 4,348th orbital launch attempt. It was the 2nd Long March 4B flight. The payload was bound for low Earth orbit (LEO). Zi Yuan 1-01, one of 436 catalogued objects, reached a 734 × 756 km orbit inclined 98.6°. 436 objects from this launch are catalogued, 2 of them payloads.
- Watch
- No webcast on record.
- Booster
- No booster details on record.
- Mission
- Earth Science · Low Earth Orbit (LEO)
- Milestone
- 2nd Long March 4B flightChina Aerospace Science and Technology Corporation's 1st launch1st this yearhumanity's 4,348th orbital launch attempt59th orbital launch attempt this year
Flight preview
Orbit: as tracked
Zi Yuan 1-01 · NORAD 25940 · 1999-057 · Space-Track · tracking 1 of 436 objects
Show the numbers for orbit elements
- Object
- CBERS 1
- Object ID
- 1999-057A
- Epoch
- 1999-10-14 04:22:48 UTC
- Mean motion
- 14.46239452 rev/day
- Eccentricity
- 0.0015476
- Inclination
- 98.5552°
- Ascending node
- 357.2816°
- Arg. of perigee
- 32.6519°
- Mean anomaly
- 327.5318°
- Element set
- 999
- Rev at epoch
- 1
- B*
- 0
Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: LEO. Ascent drawn from padside's representative profile.
Catalogued objects
436 catalogued: 2 payloads, 1 rocket stage, 433 debris; 123 still in orbit
- Zi Yuan 1-01 · NORAD 25940 · in orbit
- SACI-1 · NORAD 25941 · in orbit
CZ-4B Y1 Stage 3 · in orbit
Data from J. McDowell, planet4589.org
About this launch
The CBERS (China Brazil Earth Resources Satellite) or ZY 1 (Zi Yuan) satellites are designed for global coverage and include cameras to make optical observations and a data collecting system to gather data on the environment. They are unique systems due to the use of on-board sensors which combine features that are especially designed to resolve the broad range of space and time scales involved in the monitoring and preservation of the ecosystem. They are operated jointly by the China Centre for Resources Satellite Data and Application (CRESDA) and the Brazilian INPE (Instituto Nacional de Pesquisas Espaciais, National Institute of Space Research).
Pad

Launch Complex 7, Taiyuan Satellite Launch Center, People's Republic of China
11th launch from Launch Complex 7, 3rd this year · 11th from Taiyuan Satellite Launch Center, People's Republic of China
32 launches from this pad · 162 from Taiyuan Satellite Launch Center, People's Republic of China
124 days after the previous launch from this pad
All launches from Taiyuan Satellite Launch Center, People's Republic of ChinaOpen in maps
Questions
When did Zi Yuan 1-1 launch?
Zi Yuan 1-1 launched on October 14, 1999. The time is known to the hour, not the minute.
Where can I watch Zi Yuan 1-1?
No webcast is on record for this launch.
What rocket launched Zi Yuan 1-1?
Long March 4B, flown by China Aerospace Science and Technology Corporation. Long March 4B spec sheet
Where did Zi Yuan 1-1 launch from?
Launch Complex 7, Taiyuan Satellite Launch Center, People's Republic of China.
What orbit did Zi Yuan 1-1 reach?
Zi Yuan 1-01, one of 436 catalogued objects, reached a 734 × 756 km orbit inclined 98.6°.
How many satellites did Zi Yuan 1-1 launch?
2 payloads from this launch are catalogued, 2 of them still in orbit (Data from J. McDowell, planet4589.org).
