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SpaceX's first Starship V3 launches May 20 on Flight 12, as Starlink's 10,354 active sats force a historic carrier alliance.
STEP 2 (23105)
COSPAR: 1994-029A | Alt Name: STEP M2
Image
Additional Sources
Launch Details
Launch Date
May 19, 1994
Launch Site
AFWTR
Launch Pad
RW04/22
Launch Vehicle
Pegasus/HAPS
Orbital Elements
NORAD ID
23105
International Designator
1994-029A
Epoch
Sat, 04 Jul 2026 03:47:25 GMT
Apogee
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Perigee
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Inclination
81.94°
Right Ascension
156.54°
Eccentricity
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Argument of Perigee
202.35°
Period
96.59 min
Mean Motion
14.91 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
STEP 2
Alternative Name
STEP M2
Type
Payload
Status
Unknown
Owner
STP
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 23105U 94029A 26185.15793922 .00002902 00000-0 27480-3 0 9992
2 23105 81.9382 156.5371 0081408 202.3456 157.4209 14.90790747722417
Source: Celestrak
Summary
The STEP 2 satellite, also known as STEP M2, was launched on May 19, 1994, from AFWTR using a Pegasus/HAPS launch vehicle. It has a configuration of LEOStar and is manufactured by TRWC/CTA for experimental purposes under the ownership of STP. The satellite measures 2 meters in length with a diameter of 1 meter and a span of 3 meters. Its dry mass is 180 kg, which matches its launch mass. STEP 2 is powered by four deployable fixed solar arrays and batteries. It features SIDEX equipment and has a shape described as "Box + 2 Pan" with an RCS value of 1.981. The satellite was launched for experimental missions and remains in stable orbit since the date of its launch.
Physical Characteristics
Length
2
Diameter
1
Span
3
Dry Mass
180
Launch Mass
180
Shape
Box + 2 Pan
Radar Cross Section
1.981
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
STEP 2
Purpose
Experimental
Mission
Experimental
Manufacturer
TRWC/CTA
Life Expectancy
Unknown
Bus
LEOStar T-200
Configuration
LEOStar
Motor
None
Equipment
SIDEX
Power System
4 deployable fixed 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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