X Report 30 May 2025
SpaceX embarks on another milestone as it prepares to launch an advanced GPS satellite for the U.S. Space Force today, aiming for a record 170 launches this year.
TOPO 1 (04363)
COSPAR: 1970-025B | Alt Name: TOPO I
Image
Additional Sources
Launch Details
Launch Date
April 8, 1970
Launch Site
AFWTR
Launch Pad
SLC2E
Launch Vehicle
Thorad SLV-2G Agena D
Orbital Elements
NORAD ID
04363
International Designator
1970-025B
Epoch
Sat, 04 Jul 2026 00:45:14 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
99.89°
Right Ascension
98.67°
Eccentricity
Calculating...
Argument of Perigee
339.11°
Period
106.93 min
Mean Motion
13.47 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
Basic Satellite Info
Name
TOPO 1
Alternative Name
TOPO I
Type
Payload
Status
Unknown
Owner
ARTOPL
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 04363U 70025B 26185.03141934 -.00000022 00000-0 37389-4 0 9996
2 04363 99.8867 98.6713 0001546 339.1060 31.9412 13.46699902763462
Source: Celestrak
Summary
Apologies, there is no summary for this satellite yet. I am working to generate these for every object in the catalog, but it is going to take time.
Physical Characteristics
Length
0.2
Diameter
0.4
Span
0.5
Dry Mass
18
Launch Mass
18
Shape
Box
Radar Cross Section
0.1643
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Secor II S/N 18 (ITT MAT)
Purpose
Geodesy
Mission
Geodesy
Manufacturer
ITT
Life Expectancy
Unknown
Bus
Secor
Configuration
cube
Motor
?
Equipment
MAT SECOR transponder
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
Satellite Articles
View All Posts »Learn more about satellites and other related topics.
Space Brief 5 Dec 2025
Focusing on military satellite initiatives, defense strategies, and advancements in air and cyber capabilities
SpaceX Starfall Reentry Vehicle Plans Revealed by FAA | KeepTrack X Report
FAA documents expose SpaceX's Starfall reentry vehicle program, targeting in-space manufacturing support as the Starlink constellation holds 10,397 working satellites.
Northrop Grumman Books $71M Charge on Vulcan Booster Anomaly | KeepTrack Space Brief
Northrop Grumman takes $71M charge over Vulcan solid rocket booster anomaly, grounding ULA's vehicle. Vulcan manifest timelines now in holding pattern pending resolution.
Space Brief 12 Dec 2024
U.S. Space Force's Europe operations amidst Ukraine conflict, Maxar's new partnership, integration of military and commercial tech, and the Pentagon's new AI initiatives shape today's space discourse.
FAA Grounds Starship V3 for Mishap Probe, X Report 29 May 2026
FAA grounds Starship pending a mishap investigation into the V3 debut flight; return to flight hinges on FAA sign-off. Starlink 10-53 added 29 sats.
SpaceX Hits 50 Launches, Falcon Heavy Scrub, X Report 28 Apr 2026
SpaceX hit 50 launches in 2026 on April 26. Falcon Heavy's ViaSat-3 mission, only its 12th flight, scrubbed on weather at Kennedy; new date pending.
SpaceX Orbital Data Center Plans Draw Astronomer Fury | KeepTrack X Report
SpaceX's orbital data center constellation and TERAFAB's $25B AI chip factory spark backlash as Starlink surpasses 10,116 working satellites.