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SSTL S1-4 (43618)
COSPAR: 2018-071A | Alt Name: S1-4
Image
Additional Sources
Launch Details
Launch Date
September 16, 2018
Launch Site
SRILR
Launch Pad
FLP
Launch Vehicle
PSLV
Orbital Elements
NORAD ID
43618
International Designator
2018-071A
Epoch
Sat, 04 Jul 2026 06:37:33 GMT
Apogee
Calculating...
Perigee
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Inclination
97.50°
Right Ascension
56.18°
Eccentricity
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Argument of Perigee
97.54°
Period
96.24 min
Mean Motion
14.96 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
SSTL S1-4
Alternative Name
S1-4
Type
Payload
Status
Operational
Owner
SSTLA
Country
United Kingdom
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 43618U 18071A 26185.27607676 .00000910 00000-0 85538-4 0 9995
2 43618 97.5010 56.1777 0002327 97.5400 262.6086 14.96196381425490
Source: Celestrak
Summary
SSTL S1-4, also known as S1-4, is an Earth Observation satellite manufactured by SSTLA in the UK. It was launched on September 16, 2018, from SRILR using a PSLV launch vehicle. The satellite has dimensions of 2.5 meters in length and diameter, with a span of 2.5 meters, weighing 444 kg at launch and 400 kg dry mass. It is equipped with a 1-meter panchromatic imager and a 4-meter imager covering three spectral bands. The satellite's power supply comes from solar cells and batteries, and it has a designed lifetime of seven years. Its shape consists of a heptagonal prism and cylinder structure. SSTL S1-4 is owned by SSTLA and is part of the Earth Observation mission.
Physical Characteristics
Length
2.5
Diameter
1
Span
2.5
Dry Mass
400
Launch Mass
444
Shape
Hept prism+cyl
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
SSTL S1-4
Purpose
Earth Observation
Mission
Earth Observation
Manufacturer
SSTLA
Life Expectancy
7 years
Bus
SSTL-300S1
Configuration
SSTL-300-S1
Motor
Unknown
Equipment
1-meter panchromatic imager, 4-meter imager in 3 spectral bands
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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