Launch Date
June 24, 1966
Launch Site
AFWTR
Launch Pad
75-1-1
Launch Vehicle
Thor SLV-2A Agena D
NORAD ID
02255
International Designator
1966-056B
Epoch
Sun, 19 Jul 2026 07:24:53 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
86.98°
Right Ascension
176.22°
Eccentricity
Calculating...
Argument of Perigee
74.02°
Period
181.19 min
Mean Motion
7.95 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Name
THOR AGENA D R/B
Alternative Name
Agena D 6311
Type
Status
Owner
GSFC
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
1 02255U 66056B 26200.30895711 -.00000003 00000+0 -51054-2 0 9992
2 02255 86.9757 176.2226 0047339 74.0244 286.5771 07.94756119742874
Source: Celestrak
Length
6.3
Diameter
1.5
Span
6.3
Dry Mass
600
Launch Mass
600
Shape
Cyl
Radar Cross Section
6.6496
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Payload
Agena D 6311
Purpose
Unknown
Mission
Unknown
Manufacturer
LMSC
Life Expectancy
Unknown
Bus
Agena D
Configuration
Unknown
Motor
Unknown
Equipment
Unknown
Power System
Unknown
ADCS
Unknown
Transmitter Frequency
Unknown
Learn more about satellites and other related topics.
Space Force modernization stalls over workforce gaps. Deutsche Telekom targets 2028 for Starlink Mobile V2 across 10 EU nations. Iran ops strain US munition stocks.
On April 17, 2026, the U.S. Space Force officially cancelled the Next Generation Operational Control System after sixteen years of development, cost overruns, and testing failures. The $8 billion program was supposed to unlock the military's encrypted GPS signal. Instead, the satellites are flying with capabilities the ground can't command.
Today's highlights include Europe's record space budget for independence, Transporter-15's successful launch of 140 payloads, and the damage to the Baikonur pad affecting upcoming ISS missions.
SpaceX marks a significant milestone with its Bandwagon-3 mission, while Ukraine explores Starlink alternatives.
SpaceX wins a $2.29 billion US Space Force contract for a military space data network, NASA adds 6 crew missions, and Starship V3 makes its first flight.
Today's Space Brief covers SpaceX's recent launch for OneWeb, advances in remote-control robots for lunar missions, the power loss of Intelsat 33e, and developments in inflatable space habitats.
On December 15, 1970, a battered Soviet probe accomplished something no spacecraft had done before - it survived landing on another world and lived to tell about it.
SpaceX successfully launched the Transporter-15 rideshare mission, deploying 140 payloads including significant international contributions. Meanwhile, the company progresses with Booster 19 stacking after the recent Booster 18 anomaly.
