Space Brief 20 Dec 2025
Today's Space Brief focuses on multi-billion dollar contracts for missile-tracking satellites, developments in optical nuclear clock research, and innovative drone projects for military collaboration.
COSMOS 2381 [GLONASS] (26988)
COSPAR: 2001-053B | Alt Name: Kosmos-2381
Image
![COSMOS 2381 [GLONASS] Satellite Image](/images/sat/26988.jpg)
Additional Sources
Launch Details
Launch Date
December 1, 2001
Launch Site
Launch Pad
LC81/24
Launch Vehicle
Proton-K/DM-2
Orbital Elements
NORAD ID
26988
International Designator
2001-053B
Epoch
Sun, 28 Jun 2026 08:27:38 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
64.10°
Right Ascension
57.08°
Eccentricity
Calculating...
Argument of Perigee
228.66°
Period
675.73 min
Mean Motion
2.13 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
Basic Satellite Info
Name
COSMOS 2381 [GLONASS]
Alternative Name
Kosmos-2381
Type
Payload
Status
Non-operational
Owner
KVR/IACG
Country
Russia
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 26988U 01053B 26179.35252882 -.00000043 00000-0 00000-0 0 9990
2 26988 64.0960 57.0758 0045115 228.6605 313.3626 2.13103909191268
Source: Celestrak
Summary
The COSMOS 2381 [GLONASS] satellite, also known as Kosmos-2381, was launched on December 1, 2001, from the Tymshchuk Site (TYMSC) using a Proton-K/DM-2 launch vehicle. It is part of the Uragan series and serves a navigation mission for its operator KVR/IACG. The satellite has a dry mass of 1,200 kilograms and a launch mass of 1,400 kilograms. Its dimensions include a length of 4 meters, diameter of 1.5 meters, and span of 7.8 meters due to deployable solar arrays. It is equipped with two deployable solar arrays and batteries for power. The satellite has a shape described as cylindrical with antennas and panels, and it was designed to operate for approximately three years in orbit.
Physical Characteristics
Length
4
Diameter
1.5
Span
7.8
Dry Mass
1200
Launch Mass
1400
Shape
Cyl + Ant + 2 Pan
Radar Cross Section
3.9905
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Uragan No. 89L
Purpose
Navigation
Mission
Navigation
Manufacturer
POL
Life Expectancy
3 years
Bus
Uragan
Configuration
3-Axis stabilized
Motor
?
Equipment
?
Power System
2 deployable solar arrays, 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 IPO Surges 20%; China Debuts Tallest Rocket | KeepTrack Space Brief
SpaceX shares jump 20% on first trading day after historic IPO. China launches tallest rocket while LandSpace preps second landing attempt. Tracking data.
X Report 4 May 2025
Today's brief highlights the successful launch of 29 Starlink satellites, progress on the Starship fleet, and ongoing adjustments in SpaceX's launch schedules.
SpaceX Launches 13th NRO Proliferated Architecture Mission | KeepTrack Space Brief
Falcon 9 successfully deployed NROL-72 for National Reconnaissance Office's 13th proliferated architecture mission. Low-Earth orbit intelligence constellation expanding since 2021.
EUTELSAT 172B
Europe's first high-power all-electric telecom satellite doesn't just sit above the Pacific - it got there on robotic arms and plasma thrusters, broke records doing it, and now keeps your airplane Wi-Fi running between LA and Tokyo.
SpaceX Launches GPS Satellite Tonight, Starship V3 Targets Mid-March | KeepTrack X Report
SpaceX to launch GPS III SV09 satellite for Space Force at 11:38 p.m. EST from Cape Canaveral. Musk confirms Starship V3 with Raptor V3 engines targets mid-March first flight.
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 6 Aug 2025
Highlights of today's Space Brief include advancements in missile defense systems, a historic lunar project by NASA, and strategic military investments in satellite technology.