Gunter's Space Page
Why this unassuming website has become the backbone of space research for enthusiasts and professionals alike
SL-18 R/B (26703)
COSPAR: 2001-007B | Alt Name: Start-1 (N4) Stage 4
Image
Additional Sources
Launch Details
Launch Date
February 20, 2001
Launch Site
SVOBO
Launch Pad
LC5
Launch Vehicle
Start-1
Orbital Elements
NORAD ID
26703
International Designator
2001-007B
Epoch
Sat, 04 Jul 2026 03:06:04 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
97.68°
Right Ascension
203.78°
Eccentricity
Calculating...
Argument of Perigee
312.32°
Period
95.50 min
Mean Motion
15.08 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
Basic Satellite Info
Name
SL-18 R/B
Alternative Name
Start-1 (N4) Stage 4
Type
Rocket Body
Status
Space Junk
Owner
PU
Country
Russia
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 26703U 01007B 26185.12921482 .00003214 00000-0 21402-3 0 9999
2 26703 97.6830 203.7837 0007576 312.3167 47.7418 15.07826795663692
Source: Celestrak
Summary
A rocket body, also commonly referred to as an upper stage or spent rocket stage, is the structural shell left behind after a rocket has delivered its payload to orbit. These large and often heavy pieces of space hardware can remain in orbit for years, posing significant collision hazards as part of the growing space debris problem. If left uncontrolled, rocket bodies have the potential to reenter Earth's atmosphere unpredictably, which can lead to falling debris in populated areas. Additionally, they risk colliding with operational satellites or the International Space Station, creating more debris and putting human life at risk.
Physical Characteristics
Length
2.5
Diameter
1
Span
2.5
Dry Mass
300
Launch Mass
300
Shape
Cyl
Radar Cross Section
2.249
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Start
Purpose
Unknown
Mission
Unknown
Manufacturer
KMIT
Life Expectancy
Unknown
Bus
Start
Configuration
Unknown
Motor
Unknown
Equipment
Unknown
Power System
Unknown
ADCS
Unknown
Transmitter Frequency
Unknown
Map
Next Pass
Azimuth Elevation Time (Local)
Start Azimuth
Max Elevation
Stop Azimuth
Time Until
Pass Duration
Satellite Articles
View All Posts »Learn more about satellites and other related topics.
X Report 25 Oct 2025
SpaceX prepares for a record-setting launch of Starlink satellites, while Iridium faces challenges against SpaceX's expanding services.
Space Brief 28 Aug 2025
Today's briefing covers collaborations enhancing defense capabilities, new satellite technologies entering the market, and strategic shifts in military satellite applications.
The Day America's Revolutionary Rocket Design Made Its Final Flight
Twenty years ago, an Atlas rocket carrying a classified payload lifted off from Cape Canaveral, marking the end of a revolutionary spacecraft design that helped launch America into the Space Age
25 Starlinks Lift Off from Vandenberg in Latest Batch | KeepTrack X Report
SpaceX launched 25 more Starlink satellites from Vandenberg SFB on March 8, 2026, pushing the active constellation toward 9,914 working spacecraft.
X Report 15 Sep 2025
SpaceX successfully launched Northrop Grumman's new Cygnus XL cargo spacecraft to the ISS, marking a significant advancement in cargo delivery capabilities.
X Report 21 Apr 2025
SpaceX launches its 32nd cargo mission to the ISS, and NRO marks a milestone with over 200 satellites deployed.
Space Brief 15 Dec 2024
Anticipated NISAR launch now scheduled for March 2025; Rivada persists in broadband constellation quest despite setbacks; SpaceX scrubbed RRT-1 launch holds mystery.