The Rise of Super Heavy-Lift Rockets
Super heavy-lift rockets are the most powerful launch vehicles ever built. They can send humans and cargo to the Moon, Mars, and beyond. But what are they, and why are they so important?
UME-2 (ISS-B) (10674)
COSPAR: 1978-018A | Alt Name: Ume-2
Image
Additional Sources
Launch Details
Launch Date
February 16, 1978
Launch Site
TANSC
Launch Pad
N
Launch Vehicle
N-1
Orbital Elements
NORAD ID
10674
International Designator
1978-018A
Epoch
Sat, 04 Jul 2026 00:53:13 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
69.36°
Right Ascension
217.29°
Eccentricity
Calculating...
Argument of Perigee
86.00°
Period
107.17 min
Mean Motion
13.44 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
Basic Satellite Info
Name
UME-2 (ISS-B)
Alternative Name
Ume-2
Type
Payload
Status
Non-operational
Owner
NASDA
Country
Japan
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 10674U 78018A 26185.03696155 -.00000035 00000-0 24200-4 0 9990
2 10674 69.3609 217.2905 0160999 86.0050 296.8192 13.43715173372905
Source: Celestrak
Summary
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.
Physical Characteristics
Length
0.8
Diameter
0.9
Span
36.8
Dry Mass
141
Launch Mass
141
Shape
Cyl + 2 Ant
Radar Cross Section
1.3385
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
ISS-b
Purpose
Research, Ionosphere
Mission
Research, Ionosphere
Manufacturer
MELCO
Life Expectancy
Unknown
Bus
ISS
Configuration
Unknown
Motor
Unknown
Equipment
Unknown
Power System
Solar cells, 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.
X Report 1 Jul 2025
SpaceX gears up for an exciting July with a doubleheader launch planned for the east coast and ongoing advancements in Starlink technology.
Starship V3 Targets May 19 Debut; FCC OKs $2.4B Spectrum Deal | KeepTrack X Report
SpaceX targets May 19 for Starship V3's first flight from Pad 2 as the FCC approves a $2.4B EchoStar spectrum deal for Starlink D2D.
Space Brief 16 Sep 2024
Highlights of the day include the Polaris Dawn mission's splashdown, advances in space traffic management, and intriguing astronomy insights from the cloud's edge.
X Report 18 Feb 2025
SpaceX prepares for a historic Falcon 9 landing attempt in The Bahamas, while also contributing to FAA air traffic control modernization.
X Report 4 Sep 2025
SpaceX conducted multiple successful launches this week, adding to its Starlink constellation and marking significant milestones in its ongoing missions.
SpaceX Launches AST SpaceMobile Block 2 BlueBird Satellites | KeepTrack Space Brief
SpaceX launched three Block 2 BlueBird satellites for AST SpaceMobile from Cape Canaveral. Block 2 variants are larger with enhanced capacity compared to Block 1 units already in orbit.
SpaceX Absorbs xAI in History's Largest Private Merger | KeepTrack X Report
SpaceX officially merged with Elon Musk's xAI under the SpaceXAI brand, while a Falcon 9 lofted 81 rideshare payloads from Vandenberg on July 7.