Space Brief 28 Apr 2025
Today's highlights include SpaceX's 250th Starlink mission, a key Senate vote for NASA's next administrator, and insights into satellite missions and movements.
ESSA 9 (TOS-G) (03764)
COSPAR: 1969-016A | Alt Name: ESSA 9
Image
Additional Sources
Launch Details
Launch Date
February 26, 1969
Launch Site
Launch Pad
LC17B
Launch Vehicle
Thor Delta E1
Orbital Elements
NORAD ID
03764
International Designator
1969-016A
Epoch
Sat, 04 Jul 2026 06:38:29 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
101.40°
Right Ascension
184.44°
Eccentricity
Calculating...
Argument of Perigee
79.34°
Period
115.21 min
Mean Motion
12.50 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
Basic Satellite Info
Name
ESSA 9 (TOS-G)
Alternative Name
ESSA 9
Type
Payload
Status
Non-operational
Owner
ESSA
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 03764U 69016A 26185.27673219 -.00000044 00000-0 -14523-4 0 9990
2 03764 101.4022 184.4385 0051620 79.3450 292.5040 12.49861986989964
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
0.6
Diameter
1.1
Span
1.1
Dry Mass
157
Launch Mass
157
Shape
Cyl
Radar Cross Section
0.7838
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
TOS G
Purpose
Meteorology
Mission
Meteorology
Manufacturer
RCA
Life Expectancy
Unknown
Bus
Tiros I
Configuration
Unknown
Motor
?
Equipment
2 x AVCS (#T9, 1, 3, 5, 7, 9); 2 x APT (#2, 4, 6, 8); FPR (#3, 5, 7, 9)
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 Force Reassigns GPS III to Falcon 9 After Vulcan Grounding | KeepTrack Space Brief
Space Force shifts GPS III satellite launch from ULA's Vulcan to SpaceX Falcon 9 due to persistent solid rocket booster issues. Critical navigation asset reassignment signals operational consequences.
Vulcan Grounding Threatens WGS-11 and OPIR Launches | KeepTrack Space Brief
ULA's Vulcan rocket grounded, imperiling Space Force WGS-11 communications satellite and Next-Gen OPIR missile warning payload. Both missions lack backup launch options.
Space Force Halts All Vulcan Missions Over Solid Booster Issue | KeepTrack Space Brief
Space Force suspends all Vulcan launches pending solid rocket booster investigation. Rocket Lab scrubs HASTE hypersonic vehicle launch. Military space funding hits record highs.
SpaceX Accuses Amazon of Debris Violations at FCC | KeepTrack X Report
SpaceX filed an FCC complaint against Amazon over orbital debris violations as Starship V3 gets a maiden voyage date and a $178.5M Space Force deal lands.
X Report 1 Nov 2025
SpaceX marks a significant milestone with its 100th Starlink mission launch and makes impressive progress on lunar lander development for Artemis III.
Space Brief 1 Mar 2025
Today's Space Brief covers reentries, the impact of NOAA dismissals on space weather tracking, a strategic academic partnership probing cosmic mysteries, and a newly unveiled space motto.
X Report 22 Apr 2025
Amid multiple new launches, SpaceX marks its 300th orbital flight milestone at Cape Canaveral while pushing forward with cargo and reentry missions.