Space Brief 2 Oct 2025
Highlighting ExLabs' Space Force contract, Starlink advances, and developments in orbital communication tech.
COSMOS 2165 (21779)
COSPAR: 1991-077A | Alt Name: Kosmos-2165
Image
Additional Sources
Launch Details
Launch Date
November 12, 1991
Launch Site
PLMSC
Launch Pad
LC32/1
Launch Vehicle
Tsiklon-3
Orbital Elements
NORAD ID
21779
International Designator
1991-077A
Epoch
Sat, 04 Jul 2026 00:20:52 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
82.60°
Right Ascension
221.45°
Eccentricity
Calculating...
Argument of Perigee
23.47°
Period
113.84 min
Mean Motion
12.65 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
Basic Satellite Info
Name
COSMOS 2165
Alternative Name
Kosmos-2165
Type
Payload
Status
Unknown
Owner
UNKSR
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 21779U 91077A 26185.01450014 .00000018 00000-0 41224-4 0 9993
2 21779 82.6042 221.4537 0010808 23.4673 353.2050 12.64921774599123
Source: Celestrak
Summary
COSMOS 2165, also known as Kosmos-2165, is a military communication satellite launched on November 12, 1991, from the Plesetsk Cosmodrome LC32/1 launch pad using the Tsiklon-3 launch vehicle. The spacecraft, manufactured by NPOPM and belonging to the Strela-3 bus series, has dimensions of 1.6 meters in length, 0.8 meters in diameter, and a span of 7 meters with its antennas deployed. It weighed 225 kilograms at launch and also has the same dry mass. The satellite is powered by solar cells and batteries and was designed for military communication purposes. Its shape consists of a cylindrical body with attached antennas and it has an RCS (Reflective Cross Section) value of 1.1476 square meters.
Physical Characteristics
Length
1.6
Diameter
0.8
Span
7
Dry Mass
225
Launch Mass
225
Shape
Cyl + Ant
Radar Cross Section
1.1476
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Strela-3
Purpose
Military Communication
Mission
Military Communication
Manufacturer
NPOPM
Life Expectancy
Unknown
Bus
Strela-3
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.
Space Brief 7 Dec 2025
Today's highlights include a record-breaking event at the International Space Station, significant funding for hypersonic missile production, and several key military developments impacting space strategy.
Space Brief 16 Nov 2024
Today's highlights include ABL Space shifting its focus to missile defense, Intuitive Machines advocating for Artemis infrastructure reforms, and more updates from space and defense sectors.
The Korean Optical Wide-field patroL-Network (OWL-Net)
South Korea's sophisticated network of robotic telescopes provides critical space situational awareness while strengthening the nation's position in space security amid regional tensions
Space Brief 12 Feb 2025
Today's space brief covers SpaceX's latest Starlink missions, Satellogic's contract with Brazilian Air Force, OCX, and ATLAS project updates, and DARPA's insights on cybersecurity vulnerabilities.
The Day We First Landed on Venus
On December 15, 1970, a battered Soviet probe accomplished something no spacecraft had done before - it survived landing on another world and lived to tell about it.
X Report 23 Nov 2024
SpaceX advances with Starship tests as Starlink continues global expansion. Key infrastructure updates from Cape Canaveral involve multiple industry players.
SpaceX Launches CAS500-2 and 44 Rideshares, Space Brief 3 May 2026
SpaceX CAS500-2 launch success: Falcon 9 flew May 3 at 0700 UTC from Vandenberg with South Korea's imaging satellite and 44 rideshare payloads.