Delta 0100

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Delta 0100 series
Delta 900 with Nimbus-E.jpg
Delta 0900 prior to the launch of Nimbus 5.
Function Expendable launch system
Country of origin  United States
Launch history
Status Retired
Launch sites Vandenberg SLC-2W
Total launches 5
Successes 4
Failures 1
First flight 23 July 1972
Last flight 6 November 1973

The Delta 0100 series, also Delta 100, 0300 or 300 series, was an American expendable launch system which conducted orbital launches between 1968 and 1972. It was a member of the Delta family of rockets, and the first to be designated using a four digit numerical code. Two variants were flown, individually designated Delta 0300 and Delta 0900.

The Long Tank Thor, a stretched version of the Thor missile, was used as the first stage of the Delta 0100 series. Castor-2 solid rocket boosters were attached to increase thrust at lift-off, three on the 0300 variant, and nine on the 0900. The second stage was a Delta F.

Five 0100 series rockets were launched, three using the 0300 configuration, and two in the 0900 configuration. All launches occurred from Space Launch Complex 2W at Vandenberg AFB. One of the launches, a Delta 0300 with ITOS E, failed to reach orbit due to a second stage malfunction.


  • Wade, Mark. "Delta". Encyclopedia Astronautica. Retrieved 2009-02-11. 
  • Krebs, Gunter. "Thor family". Gunter's Space Page. Retrieved 2009-02-11.