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Hélios 1B
French military reconnaissance satellite (1999-2004). Hélios 1B was launched on December 3, 1999 aboard a Ariane 40 from Kourou. Latest status in GCAT: in orbit.
COSPAR 1999-064ANORAD 25977France
Identity
- Name in GCAT
- Helios 1B
- Common name
- Hélios 1B
- International designator
- 1999-064A
- NORAD catalog number
- 25977
- GCAT identifier
- S25977
- UN registration
- ST/SG/SER.E/374
Mission
- Mission type
- Optical imaging
- Use
- Defense
- Program
- Helios
- Owner
- CNES
- Country
- France
- Builder
- Matra Marconi Space (Toulouse)
- Platform (bus)
- Spot 4
Launch
- Date
- December 3, 1999 · 16:22 UTC
- Launch record
- 1999-064Success
- Rocket
- Ariane 40
- Spaceport
- Kourou · pad ELA2
Orbit and fate
- Orbit class (GCAT)
- LEO/S
- Perigee
- 669 km
- Apogee
- 675 km
- Inclination
- 98.08°
- Status
- In orbit
- Last known active
- October 2004
- End of operations
- Oct 21, 2004
Size
- Mass
- 2,544 kg
- Dry mass
- 2,500 kg
- Length
- 3.5 m
- Diameter
- 2.00 m
- Span
- 4.0 m
Launched together
Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q16063686 (CC0).