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NAVSTAR 81 (USA 319) (48859)
COSPAR: 2021-054A | Alt Name: GPS III SV05
Image
Additional Sources
Launch Details
Launch Date
June 17, 2021
Launch Site
Launch Pad
LC40
Launch Vehicle
Orbital Elements
NORAD ID
48859
International Designator
2021-054A
Epoch
Thu, 02 Jul 2026 00:34:02 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
55.17°
Right Ascension
331.86°
Eccentricity
Calculating...
Argument of Perigee
228.38°
Period
717.96 min
Mean Motion
2.01 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
Basic Satellite Info
Name
NAVSTAR 81 (USA 319)
Alternative Name
GPS III SV05
Type
Payload
Status
Operational
Owner
SMC
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 48859U 21054A 26183.02363622 -.00000082 00000-0 00000+0 0 9990
2 48859 55.1671 331.8638 0025946 228.3850 172.9360 2.00568335 37052
Source: Celestrak
Summary
NAVSTAR 81 (USA 319), also known as GPS III SV05, is a navigation satellite launched on June 17, 2021, from Cape Canaveral Air Force Station's Launch Complex 40 using the Falcon 9 launch vehicle. The spacecraft measures 3.4 meters in length and 1.8 meters in diameter with a span of 14 meters when its solar arrays are deployed. It has a dry mass of 2160 kilograms and was manufactured by LMSSD for SMC (Space Systems Command). Its mission is to provide navigation services as part of the GPS constellation, equipped with deployable solar arrays and batteries for power generation. The satellite's configuration is A2100A, shaped like a box with two panels, and it has an expected lifetime of 15 years.
Physical Characteristics
Length
3.4
Diameter
1.8
Span
14
Dry Mass
2160
Launch Mass
4400
Shape
Box + 2 pan
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
GPS SVN 78
Purpose
Navigation
Mission
Navigation
Manufacturer
LMSSD
Life Expectancy
15 years
Bus
A2100
Configuration
A2100A
Motor
AOCS
Equipment
?
Power System
2 deployable 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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