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Leostar
American OSC-built satellite bus designed for launch by the company's Pegasus or Taurus launch vehicles, originally designed for the USAF Standard Technology Experiment Program (STEP) technology missions.

Status: Operational 2009. First Launch: 2009-02-24. Last Launch: 2009-02-24. Number: 1 .


More at: Leostar.

Subtopics

STEP 0 (TAOS, P90-5) Experimental satellite built by TRW, CTA => Orbital Sciences Corporation (OSC) (Bus) for USAF STP (Space Test Program), USA. Launched 1994. Used the LEOStar bus.

STEP 2 (SIDEX, P91-2) Experimental satellite built by TRW, CTA => Orbital Sciences Corporation (OSC) (Bus) for USAF STP (Space Test Program), USA. Launched 1994. Used the LEOStar bus.

STEP 1 (P90-1) Experimental satellite built by TRW, CTA => Orbital Sciences Corporation (OSC) (Bus) for USAF STP (Space Test Program), USA. Launched 1994. Used the LEOStar bus.

STEP 3 (P92-2) Experimental satellite built by TRW, CTA => Orbital Sciences Corporation (OSC) (Bus) for USAF STP (Space Test Program), USA. Launched 1995. Used the LEOStar bus.

STEP 4 (P95-1) Experimental satellite built by TRW, CTA => Orbital Sciences Corporation (OSC) (Bus) for USAF STP (Space Test Program), USA. Launched 1997. Used the LEOStar bus.

TSX 5 (P95-2) Experimental satellite built by Orbital Sciences Corporation (OSC) for USAF STP (Space Test Program), USA. Launched 2000. Used the LEOStar bus.

Orbview American civilian surveillance satellite. Earth observing satellite built by Orbital Sciences Corporation (OSC) for OrbImage => GeoEye, USA. Launched 2003. Used the LEOStar bus.

Glory NASA low-earth orbit climate monitoring satellite designed to monitor aerosols in the atmosphere and solar irradiance. Failed to reach orbit. Earth Science satellite built by Orbital Sciences Corporation (OSC) for NASA, USA. Launched 2011. Used the LEOStar bus.

VCL (ESSP 1) Earth Observation, Lidar satellite built by Orbital Sciences Corporation (OSC) for NASA. Used the LEOStar bus.

Family: Earth. Country: USA. Launch Vehicles: Taurus, Taurus 3110. Launch Sites: Vandenberg 576E.

2001 September 21 - . 18:49 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg 576E. LV Family: Taurus. Launch Vehicle: Taurus 2110. FAILURE: A problem a few seconds after first stage separation caused the rocket to go off course; it recovered and the remainder of the stages fired, but final cutoff velocity was too low to reach a sustainable orbit.. Failed Stage: G.
  • Orbview-4 - . Mass: 368 kg (811 lb). Nation: USA. Agency: Orbimage. Manufacturer: OSC. Program: Orbview. Class: Surveillance. Type: Civilian surveillance satellite. Spacecraft Bus: LEOStar. Spacecraft: Orbview. COSPAR: F010921A.

    Launch delayed from June 27, July 18/22, August 12/21 and September1. The Orbital Sciences Taurus 2110 failed to remain in orbit. A problem a few seconds after first stage separation caused the T6 rocket to go off course; the rocket recovered and the remainder of the stages fired, but final cutoff velocity was too low to reach a sustainable orbit. The Castor 120 zero stage was on course but the Orion 50S first stage motor went off course. The satellites separated from the final stage as planned but burned up in the earth's atmosphere northeast of Madagascar before completing the first orbit. The final orbit was about 75-80 km x 425-430 km x 97 deg. The primary payload was the OrbView-4 imaging satellite. OrbView-4, built by Orbital, was a 368 kg box-shaped spacecraft carrying a 1-m resolution panchromatic camera and an 8-m resolution 200-channel hyperspectral imager with a 0.45-meter aperture. It was to be used by the US Air Force.


2003 June 26 - . 18:55 GMT - . Launch Site: Point Arguello. Launch Complex: Point Arguello WADZ. Launch Pad: Aircraft from Vandenberg.. Launch Platform: L-1011. LV Family: Pegasus. Launch Vehicle: Pegasus XL.
  • Orbview 3 - . Mass: 304 kg (670 lb). Nation: USA. Agency: McLean. Program: Orbview. Class: Earth. Type: Earth resources satellite. Spacecraft Bus: LEOStar. Spacecraft: Orbview. Decay Date: 2011-03-13 . USAF Sat Cat: 27838 . COSPAR: 2003-030A. Apogee: 455 km (282 mi). Perigee: 452 km (280 mi). Inclination: 97.3000 deg. Period: 93.70 min.

    One-meter-resolution commercial imaging satellite. Orbview-3 used an Orbital Leostar bus and had a launch mass of 304 kg (including ca. 50 kg of hydrazine for orbit raising and the 66 kg science instrument). Launch had been delayed from September 2002, April 30, May 9 and 23 Air dropped in Point Arguello WADZ.


2009 February 24 - . 09:55 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg 576E. LV Family: Taurus. Launch Vehicle: Taurus 3110. FAILURE: Payload fairing did not separate..
  • OCO - . Mass: 407 kg (897 lb). Nation: USA. Agency: McLean. Class: Earth. Type: Climate satellite. Spacecraft: Leostar. Orbiting Carbon Observatory. A single instrument with a three classical grating spectrometers allowed carbon dioxide levels in the atmosphere to be monitored..


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