SpaceX Launches 2 Starlink Batches in 48 Hours, Both Coasts | KeepTrack X Report
SpaceX launched Starlink batches from Vandenberg and Cape Canaveral within 48 hours, pushing the active constellation toward 10,000 operational satellites.
SJ-4 (22996)
COSPAR: 1994-010A | Alt Name: Shi Jian 4
Image
Additional Sources
Launch Details
Launch Date
February 8, 1994
Launch Site
XICLF
Launch Pad
LC2
Launch Vehicle
Chang Zheng 3A
Orbital Elements
NORAD ID
22996
International Designator
1994-010A
Epoch
Sat, 04 Jul 2026 06:27:23 GMT
Apogee
Calculating...
Perigee
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Inclination
29.05°
Right Ascension
228.13°
Eccentricity
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Argument of Perigee
318.99°
Period
310.22 min
Mean Motion
4.64 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
SJ-4
Alternative Name
Shi Jian 4
Type
Payload
Status
Unknown
Owner
CASC1
Country
China
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 22996U 94010A 26185.26902446 .00000133 00000+0 12880-3 0 9995
2 22996 29.0538 228.1316 5543600 318.9915 10.4603 04.64193532448220
Source: Celestrak
Summary
SJ-4 (Shi Jian 4) is a technology satellite launched on February 8, 1994, from Xichang Satellite Launch Center's LC2 using the Chang Zheng 3A launch vehicle. The spacecraft has dimensions of 2.2 meters in length and diameter, with a span of 2.2 meters, and it weighs 396 kilograms at both dry mass and launch mass. It is shaped as an octagonal cylinder and was manufactured by CAST for CASC1. The satellite's purpose is to conduct technology experiments and it is powered by solar cells and batteries. SJ-4 operated with a predicted lifetime of 6 months in orbit.
Physical Characteristics
Length
2.2
Diameter
1.6
Span
2.2
Dry Mass
396
Launch Mass
396
Shape
Oct Cyl
Radar Cross Section
2.9768
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Shi Jian 4
Purpose
Technology
Mission
Technology
Manufacturer
CAST
Life Expectancy
6 months
Bus
SJ-4
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
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