Launch Date
July 17, 1964
Launch Site
Launch Pad
LC13
Launch Vehicle
Atlas Agena D
NORAD ID
00837
International Designator
1964-040B
Epoch
Thu, 25 Jun 2026 23:47:06 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
48.67°
Right Ascension
120.99°
Eccentricity
Calculating...
Argument of Perigee
256.43°
Period
5999.36 min
Mean Motion
0.24 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Name
OPS 3674 (VELA 4)
Alternative Name
Vela II-B
Type
Status
Owner
AFSSD
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
1 00837U 64040B 26176.99104981 .00000371 00000-0 00000-0 0 9996
2 00837 48.6654 120.9880 6161180 256.4269 359.8804 0.24002561 54745
Source: Celestrak
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.
Length
1.4
Diameter
1.4
Span
1.4
Dry Mass
125
Launch Mass
125
Shape
Poly
Radar Cross Section
0.003
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Payload
Vela 2B
Purpose
Nuclear Detection
Mission
Nuclear Detection
Manufacturer
TRW
Life Expectancy
6 months (design)
Bus
Vela
Configuration
Unknown
Motor
BE-3
Equipment
12 external X-ray detectors and 18 internal neutron and gamma-ray detectors
Power System
Solar cells, batteries
ADCS
Unknown
Transmitter Frequency
Unknown
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