X Report 28 Dec 2025
SpaceX scrubs a launch due to ground system issues while continuing its ambitious deployment of Starlink satellites.
THOR I (MARCOPOLO 2) (20762)
COSPAR: 1990-074A | Alt Name: Marcopolo 2
Image
Additional Sources
Launch Details
Launch Date
August 18, 1990
Launch Site
Launch Pad
LC17B
Launch Vehicle
Delta 6925
Orbital Elements
NORAD ID
20762
International Designator
1990-074A
Epoch
Fri, 03 Jul 2026 22:11:40 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
14.58°
Right Ascension
6.52°
Eccentricity
Calculating...
Argument of Perigee
244.86°
Period
1451.50 min
Mean Motion
0.99 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
Basic Satellite Info
Name
THOR I (MARCOPOLO 2)
Alternative Name
Marcopolo 2
Type
Payload
Status
Non-operational
Owner
BSB
Country
United Kingdom
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 20762U 90074A 26184.92477140 -.00000197 00000-0 00000-0 0 9990
2 20762 14.5783 6.5180 0002850 244.8622 301.6559 0.99207960 46371
Source: Celestrak
Summary
THOR I (also known as MARCOPOLO 2) is a communication satellite with a direct broadcasting mission, manufactured by HSES and owned by BSB. It was launched on August 18, 1990, from the AFETR launch site using the Delta 6925 vehicle from LC17B pad. The satellite has dimensions of 7.2 meters in length, a diameter of 2.2 meters, and a span of 7.2 meters. It was equipped with 5 Ku-band transponders and powered by solar cells mounted on the body and drop-skirt, along with batteries. Its dry mass is 500 kg, and it had a launch mass of 690 kg. The satellite's shape is cylindrical with an RCS value of 2.5118.
Physical Characteristics
Length
7.2
Diameter
2.2
Span
7.2
Dry Mass
500
Launch Mass
690
Shape
Cyl
Radar Cross Section
2.5118
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
BSB R2
Purpose
Communication (Direct broadcasting)
Mission
Communication (Direct broadcasting)
Manufacturer
HSES
Life Expectancy
Unknown
Bus
HS-376
Configuration
HS-376
Motor
TE-M-700-17
Equipment
5 Ku-band transponders
Power System
Solar cells (body mounted and drop-skirt), batteries
ADCS
Unknown
Transmitter Frequency
Unknown
Map
Next Pass
Azimuth Elevation Time (Local)
Start Azimuth
Max Elevation
Stop Azimuth
Time Until
Pass Duration
Satellite Articles
View All Posts »Learn more about satellites and other related topics.
SpaceX Launches NROL-105 Spy Satellite in First 2026 National Security Mission | KeepTrack X Report
SpaceX launches NROL-105 spy satellite from Vandenberg — first national security mission of 2026. Crew-11 astronauts arrive in Houston after historic first-ever ISS medical evacuation.
Space Force Awards Counter-Surveillance Payload Contracts | KeepTrack Space Brief
Space Force RCO awarded SBIR contracts for radar-detection payloads to counter adversary surveillance of U.S. satellites. Follow-on miniaturization effort already planned.
DAF Space Restructure Announced Within Days, PAE Leaders Named | KeepTrack Space Brief
Department of Air Force announces finalized Program Acquisition Executive structure within days, reshaping oversight of GPS, SBIRS, and Protected Tactical Satcom systems.
Space Force Acquisition Workforce Shortfall Threatens Modernization | KeepTrack Space Brief
Space Force modernization stalls over workforce gaps. Deutsche Telekom targets 2028 for Starlink Mobile V2 across 10 EU nations. Iran ops strain US munition stocks.
Space Brief 17 Oct 2024
An exciting day in space with potential maneuver revelations from the X-37B, SpaceX's resumption of Falcon 9 launches, and significant advancements in lunar exploration tied to new U.S. spacesuits.
Space Brief 22 Mar 2025
Today's briefing covers a range of critical space industry updates, from Space Force's strategic initiatives to SpaceX's latest launch record and groundbreaking developments in orbital manufacturing.
Space Brief 14 Apr 2025
Today's highlights include SpaceX's record-breaking Falcon launches, urgent warnings about orbital collisions, and a doubleheader launch featuring spy and Starlink satellites.