Falcon Heavy Launches ViaSat-3 F3, Space Brief 27 Apr 2026
Falcon Heavy launched ViaSat-3 F3 on April 27, its 12th flight, with the first dual landing zone recovery. Plus Soyuz-5's demo flight nears at Baikonur.
WESTPAC (25398)
COSPAR: 1998-043E | Alt Name: WESTPAC
Image
Additional Sources
Launch Details
Launch Date
July 10, 1998
Launch Site
Launch Pad
LC45/1
Launch Vehicle
Zenit-2
Orbital Elements
NORAD ID
25398
International Designator
1998-043E
Epoch
Sat, 04 Jul 2026 05:05:57 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
99.01°
Right Ascension
171.66°
Eccentricity
Calculating...
Argument of Perigee
130.92°
Period
101.19 min
Mean Motion
14.23 rev/day
Latitude
Calculating...
Longitude
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Altitude
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Velocity
Calculating...
Polar Plot
3D Visualization
Basic Satellite Info
Name
WESTPAC
Alternative Name
WESTPAC
Type
Payload
Status
Operational
Owner
EOSAU
Country
Australia
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 25398U 98043E 26185.21247212 -.00000018 00000-0 12504-4 0 9990
2 25398 99.0144 171.6640 0001938 130.9178 229.2167 14.23054273453362
Source: Celestrak
Summary
WESTPAC is an Australian geodesy satellite identified by NORAD catalog number 25398 and object ID 1998-043E. Launched on July 10, 1998, from the TYMSC LC45/1 launch pad using a Zenit-2 rocket, it was manufactured by EOSAU and has an owner of EOSAU as well. The satellite is equipped with 60 prism corner cube retroreflectors for its mission. It measures 24.5 cm in diameter, is spherical in shape, and weighs 24 kilograms at launch and dry mass. The spacecraft does not have a motor or power system and has a radar cross-section of 0.165 square meters.
Physical Characteristics
Length
0.2
Diameter
0.2
Span
0.2
Dry Mass
24
Launch Mass
24
Shape
Sphere
Radar Cross Section
0.165
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
WPLTN WESTPAC
Purpose
Geodesy
Mission
Geodesy
Manufacturer
EOSAU
Life Expectancy
Unknown
Bus
NIIKP
Configuration
24.5 cm dia brass body
Motor
None
Equipment
60 prism corner cube retroreflectors
Power System
None
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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