Space Brief 13 Feb 2025
Today's brief covers significant advancements in space satellite launches, military spending impacts on space, and notable developments from the Space Force and SpaceX.
COSMOS 1891 (18402)
COSPAR: 1987-087A | Alt Name: Kosmos-1891
Image
Additional Sources
Launch Details
Launch Date
October 14, 1987
Launch Site
PLMSC
Launch Pad
LC133/3
Launch Vehicle
Kosmos 11K65M
Orbital Elements
NORAD ID
18402
International Designator
1987-087A
Epoch
Sat, 04 Jul 2026 00:08:12 GMT
Apogee
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Perigee
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Inclination
82.92°
Right Ascension
202.43°
Eccentricity
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Argument of Perigee
111.29°
Period
104.81 min
Mean Motion
13.74 rev/day
Latitude
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Longitude
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Altitude
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Velocity
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Polar Plot
3D Visualization
Basic Satellite Info
Name
COSMOS 1891
Alternative Name
Kosmos-1891
Type
Payload
Status
Unknown
Owner
VMF
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 18402U 87087A 26185.00569844 .00000060 00000-0 46518-4 0 9997
2 18402 82.9203 202.4331 0051600 111.2881 249.3795 13.73933525940913
Source: Celestrak
Summary
COSMOS 1891 (also known as Kosmos-1891) is a satellite launched by the Soviet Union on October 14, 1987, from Plesetsk using a Kosmos 11K65M launch vehicle. The spacecraft has dimensions of approximately 5 meters in length and 2.1 meters in diameter with an overall span of 17 meters when fully deployed. It weighs around 800 kilograms at launch and is equipped with solar cells and batteries for power generation. COSMOS 1891 was manufactured by OAZ and has a cylindrical shape with antennas (Cyl + Ant). Its mission involves navigation and data relay, and it carries the Parus payload. The satellite's reflective surface area (RCS) is approximately 2.0374 square meters. It belongs to VMF (Voyenno-Morskaya Flota), which translates to "Naval Fleet" in English.
Physical Characteristics
Length
5
Diameter
2.1
Span
17
Dry Mass
800
Launch Mass
800
Shape
Cyl + Ant
Radar Cross Section
2.0374
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Parus
Purpose
Navigation, data relay
Mission
Navigation, data relay
Manufacturer
OAZ
Life Expectancy
Unknown
Bus
KAUR-1 11F627
Configuration
KAUR-1
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
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