Launch Date
April 20, 1977
Launch Site
Launch Pad
LC17B
Launch Vehicle
Delta 2914
NORAD ID
09931
International Designator
1977-029A
Epoch
Sun, 19 Jul 2026 04:27:09 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
27.51°
Right Ascension
33.38°
Eccentricity
Calculating...
Argument of Perigee
324.38°
Period
734.05 min
Mean Motion
1.96 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Name
GEOS-1
Alternative Name
Geos 1
Type
Status
Owner
ESA
Country
European Space Agency
Constellation
N/A
Related Satellites
Major Events
N/A
1 09931U 77029A 26200.18552519 .00000209 00000+0 00000+0 0 9992
2 09931 27.5064 33.3782 6602978 324.3759 5.6337 01.96171471352488
Source: Celestrak
Apologies, there is no summary for this satellite yet. I am working to generate these for every object in the catalog, but it is going to take time.
Length
1.3
Diameter
1.6
Span
40
Dry Mass
237
Launch Mass
267
Shape
Cyl + 2 Ant
Radar Cross Section
4.3042
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Payload
Geos 1
Purpose
Research
Mission
Research
Manufacturer
BAEF
Life Expectancy
Unknown
Bus
ESA Geos
Configuration
Unknown
Motor
SNIA-BPD AB
Equipment
Unknown
Power System
Solar cells, batteries
ADCS
Unknown
Transmitter Frequency
Unknown
Learn more about satellites and other related topics.
Sixteen years ago today, a fireball tore across the Australian outback. Most of it was a dying Japanese spacecraft burning up after a seven-year ordeal. The bright dot racing ahead of the wreckage was a capsule holding the first grains of an asteroid ever returned to Earth.
Today's Space Brief covers a significant signals intelligence launch, a record-breaking satellite deployment in China, a glimpse into the newest stealth drone, a potential delay for NASA's lunar lander, and more exciting updates from satellite world.
Today's brief covers Blue Origin’s new defense launch contracts, the ISS launch of a Navy SEAL astronaut, Sierra Space’s GPS security advancements for the U.S. Space Force, and the Space Force's 'Orbital Watch' initiative.
A look at how tracking the space station offers a unique view of space exploration.
Today's brief covers Blue Origin's launch delay, SpaceX's upcoming Starlink mission, and highlights the YAOGAN-43 O1C satellite.
FAA advances environmental review for up to 44 Starship launches from Kennedy Space Center pad 39A. SpaceX wraps January with dual-coast Starlink launches. Crew-12 timeline tied to Artemis 2 schedule.
Today's Space Brief explores new satellite launches, significant reentries, funding milestones, and critical policy updates.
Today's space brief covers key developments in satellite monitoring, U.K. defense contracts, and critical licensing reforms supporting national security.
