Starlink Constellation Size Hits 9,931, X Report 7 Mar 2026
Starlink constellation size in 2026: 9,931 satellites in orbit, 9,920 working from 11,463 launched. Starlink 17-18 adds 25 more from Vandenberg.
OPS 5058 (DMSP 5B F2) (05903)
COSPAR: 1972-018A | Alt Name: DMSP 5528
Image
Additional Sources
Launch Details
Launch Date
March 24, 1972
Launch Site
AFWTR
Launch Pad
SLC10W
Launch Vehicle
Thor Burner 2A
Orbital Elements
NORAD ID
05903
International Designator
1972-018A
Epoch
Sat, 04 Jul 2026 06:12:00 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
99.12°
Right Ascension
19.71°
Eccentricity
Calculating...
Argument of Perigee
46.01°
Period
101.02 min
Mean Motion
14.26 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
Basic Satellite Info
Name
OPS 5058 (DMSP 5B F2)
Alternative Name
DMSP 5528
Type
Payload
Status
Non-operational
Owner
SAMSO
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 05903U 72018A 26185.25833403 .00000169 00000-0 90379-4 0 9993
2 05903 99.1214 19.7122 0051265 46.0095 314.5293 14.25511721892645
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
2.1
Diameter
0.8
Span
2.1
Dry Mass
192
Launch Mass
192
Shape
Taper Cyl
Radar Cross Section
1.1769
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
DMSP Block 5B F-2
Purpose
Meteorology
Mission
Meteorology
Manufacturer
RCA
Life Expectancy
Unknown
Bus
DMSP Block 5B
Configuration
Unknown
Motor
?
Equipment
?
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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