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BEIDOU-3S M1S (40749)
COSPAR: 2015-037B | Alt Name: Beidou DW 18
Image
Additional Sources
Launch Details
Launch Date
July 25, 2015
Launch Site
XICLF
Launch Pad
LC2
Launch Vehicle
Chang Zheng 3B/YZ-1
Orbital Elements
NORAD ID
40749
International Designator
2015-037B
Epoch
Wed, 01 Jul 2026 11:45:13 GMT
Apogee
Calculating...
Perigee
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Inclination
54.85°
Right Ascension
301.54°
Eccentricity
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Argument of Perigee
62.84°
Period
773.13 min
Mean Motion
1.86 rev/day
Latitude
Calculating...
Longitude
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Altitude
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Velocity
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Polar Plot
3D Visualization
Basic Satellite Info
Name
BEIDOU-3S M1S
Alternative Name
Beidou DW 18
Type
Payload
Status
Standby
Owner
CNSA
Country
China
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 40749U 15037B 26182.48973792 -.00000065 00000-0 00000-0 0 9990
2 40749 54.8538 301.5415 0003101 62.8434 297.2018 1.86255000 74399
Source: Celestrak
Summary
The BEIDOU-3S M1S satellite, also known as Beidou DW 18, is a navigation satellite operated by CNSA (China National Space Administration). It was launched on July 25, 2015, from Xichang Satellite Launch Center's LC2 pad using the Chang Zheng 3B/YZ-1 launch vehicle. The spacecraft has dimensions of approximately 2.2 meters in length and a diameter of 1.7 meters with a span of 10 meters due to its deployable solar arrays. It weighs 850 kilograms dry, with an initial launch mass of 1014 kilograms. Designed for a 12-year operational lifetime, the satellite features two deployable solar arrays and batteries as its power source. The BEIDOU-3S M1S is part of China's BeiDou Navigation Satellite System and was manufactured by CAST (China Academy of Space Technology).
Physical Characteristics
Length
2.2
Diameter
1.7
Span
10
Dry Mass
850
Launch Mass
1014
Shape
Box + 2 Pan
Radar Cross Section
21.5375
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Beidou-3 M1-S
Purpose
Navigation
Mission
Navigation
Manufacturer
CAST
Life Expectancy
12 years
Bus
BD-3M
Configuration
Unknown
Motor
Unknown
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
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