Space Brief 17 Dec 2025
Today's stories cover Rocket Lab's innovative DiskSat launch, Digantara's expansion to missile defense, and DARPA's satellite surveillance network expansion, among other updates in military and satellite technology.
Launch Date
April 24, 1987
Launch Site
Launch Pad
LC200/40
Launch Vehicle
Proton-K/DM-2
NORAD ID
17903
International Designator
1987-036B
Decay Date
5/8/1991
Name
COSMOS 1839 [GLONASS]
Alternative Name
Kosmos-1839
Type
Status
Owner
UNKS
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
Length
4
Diameter
1.5
Span
7.8
Dry Mass
1200
Launch Mass
1300
Shape
Cyl + Ant + 2 Pan
Radar Cross Section
8.9
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Payload
Uragan No. 31L
Purpose
Navigation
Mission
Navigation
Manufacturer
OAZ
Life Expectancy
3 years
Bus
Uragan
Configuration
3-Axis stabilized
Motor
?
Equipment
?
Power System
2 deployable solar arrays, batteries
ADCS
Unknown
Transmitter Frequency
Unknown
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