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STPSat 3 is a copy [clarification needed] of the STPSat-2 satellite, adapted to carry six experiments, including a module designed to host various space situational awareness sensors and a pair of space environment sensors. STPSat 3 launched on 19 November 2013, on the ORS-3 Minotaur 1 launch, along with 28 CubeSats. [10]
By April 2020, after further delays and cost overruns, it was expected to launch in January 2021, as a payload on a U.S. Air Force Space Test Program satellite (STPSat 6, part of STP-3 launch). [11] STPSat-6 is destined for an orbit slightly above the geostationary orbit. [12]
The third satellite has been launched on November 10, 2022 [3] with two more satellites scheduled to be launched. [4] [5] In addition, the TSI Calibration Transfer Experiment, launched on the U.S. Air Force Space Test Program Satellite-3 (STPSat-3) on November 19, 2013, is also part of JPSS.
Alongside STPSat-6 was an integrated propulsive EELV Secondary Payload Adapter (IP-ESPA) holding up to six payloads. [32] The STP-3 mission also debuted three engineering features designed to reduce risk and accumulate flight experience before use on Vulcan Centaur : an Out-of-Autoclave (OoA) payload fairings, an in-flight power system and GPS ...
A stopgap solar irradiance instrument, the Total Solar Irradiance Calibration Transfer Experiment (TCTE), was launched in November 2013 on the U.S. Air Force's STPSat-3, [9] but a full replacement for SORCE did not launch until December 2017, when the Total and Spectral solar Irradiance Sensor (TSIS-1 and TSIS-2) was delivered to the ...
4 STP-3, STPSat-6, LDPE satellite buses. 1 comment. 5 Does STP-3 include anything other than STPSat-6. 1 comment. Toggle the table of contents. Talk: Space Test Program.
USA-221 is a 180-kilogram (400 lb) spacecraft, measuring 70 centimetres (28 in) by 64 centimetres (25 in) by 54 centimetres (21 in). [3] It operates in a low Earth orbit with an apogee of 654 kilometres (406 mi), a perigee of 633 kilometres (393 mi), and 72 degrees of orbital inclination.
As of 2021, USA-289 was in a 55-degree inclination orbit with a perigee of 20,158 kilometers (12,525 miles) and an apogee of 20,222 kilometers (12,565 miles). [5] The satellite is the first GPS satellite to be able to broadcast the civilian L1C signal.