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Delta 2910

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Status: Retired 1978. First Launch: 1975-01-22. Last Launch: 1978-10-24. Number: 6 . Thrust: 2,560.00 kN (575,510 lbf). Gross mass: 131,000 kg (288,000 lb). Height: 35.00 m (114.00 ft). Diameter: 2.44 m (8.00 ft). Apogee: 3,000 km (1,800 mi).

• Landsat 2 - . Payload: Landsat B. Mass: 953 kg (2,101 lb). Nation: USA. Agency: NASA Greenbelt. Program: Landsat. Class: Earth. Type: Earth resources satellite. Spacecraft Bus: Nimbus. Spacecraft: Landsat 1-2-3. USAF Sat Cat: 7615 . COSPAR: 1975-004A. Apogee: 913 km (567 mi). Perigee: 900 km (550 mi). Inclination: 99.30 deg. Period: 103.10 min. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C)..

• Nimbus 6 - . Payload: Nimbus F. Mass: 829 kg (1,827 lb). Nation: USA. Agency: NASA Greenbelt. Class: Earth. Type: Weather satellite. Spacecraft: Nimbus. USAF Sat Cat: 7924 . COSPAR: 1975-052A. Apogee: 1,114 km (692 mi). Perigee: 1,101 km (684 mi). Inclination: 100.00 deg. Period: 107.40 min.

  Environmental research. The experiments selected for Nimbus-6 were the earth radiation budget (ERB), electrically scanning microwave radiometer (ESMR), high-resolution infrared radiation sounder (HIRS), limb radiance inversion radiometer (LRIR), pressure modulated radiometer (PMR), scanning microwave spectrometer (SCAMS), temperature-humidity infrared radiometer (THIR), tracking and data relay experiment (T+DRE), and the tropical wind energy conversion and reference level experiment (TWERLE). This complement of advanced sensors was capable of mapping tropospheric temperature, water vapor abundance, and cloud water content; providing vertical profiles of temperature, ozone, and water vapor; transmitting real-time data to a geostationary spacecraft (ATS 6); and yielding data on the earth's radiation budget.

• Explorer 54 - . Payload: AE D. Mass: 676 kg (1,490 lb). Nation: USA. Agency: NASA Greenbelt. Program: Explorer. Class: Earth. Type: Atmosphere satellite. Spacecraft: AE. Decay Date: 1976-03-12 . USAF Sat Cat: 8353 . COSPAR: 1975-096A. Apogee: 3,819 km (2,373 mi). Perigee: 151 km (93 mi). Inclination: 90.10 deg. Period: 126.80 min. Atmospheric Explorer; atmospheric research. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B). .

• Explorer 55 - . Payload: AE E. Mass: 721 kg (1,589 lb). Nation: USA. Agency: NASA Greenbelt. Program: Explorer. Class: Earth. Type: Atmosphere satellite. Spacecraft: AE. Decay Date: 1981-06-10 . USAF Sat Cat: 8440 . COSPAR: 1975-107A. Apogee: 3,002 km (1,865 mi). Perigee: 154 km (95 mi). Inclination: 19.70 deg. Period: 117.70 min. Atmospheric Explorer. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B). .

• Landsat 3 - . Payload: Landsat C. Mass: 960 kg (2,110 lb). Nation: USA. Agency: NASA Greenbelt. Program: Landsat. Class: Earth. Type: Earth resources satellite. Spacecraft Bus: Nimbus. Spacecraft: Landsat 1-2-3. USAF Sat Cat: 10702 . COSPAR: 1978-026A. Apogee: 915 km (568 mi). Perigee: 895 km (556 mi). Inclination: 98.90 deg. Period: 103.10 min. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C)..

• PIX - . Payload: PIX 1 / Delta 139. Mass: 350 kg (770 lb). Nation: USA. Agency: NASA Greenbelt. Class: Technology. Type: Navigation technology satellite. Spacecraft: PIX. Decay Date: 1981-01-27 . USAF Sat Cat: 10704 . COSPAR: 1978-026C. Apogee: 920 km (570 mi). Perigee: 903 km (561 mi). Inclination: 99.10 deg. Period: 103.20 min. Plasma Interaction Experiment. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). .

• Oscar 8 - . Payload: Amsat-Oscar-8. Mass: 27 kg (59 lb). Nation: USA. Agency: AmSat. Program: Oscar. Class: Communications. Type: Amateur radio communications satellite. Spacecraft: Oscar. USAF Sat Cat: 10703 . COSPAR: 1978-026B. Apogee: 903 km (561 mi). Perigee: 894 km (555 mi). Inclination: 99.20 deg. Period: 103.00 min.

  AMSAT-OSCAR 8 was launched piggyback with LandSat 3 (ERTS 3) and PIX. The third phase 2 satellite (Phase II-D). Weight 27.2 kg. Box shaped, 33 cm high, 38 x 38 cm. Circularly polarized VHF canted turnstile, UHF quarter wave monopole, and HF half-wave dipole antenna system. Another cooperative international effort (United States, Canada, Germany and Japan). AO-8 had a similar store-and-forward service as AO-7 and carried Mode A (145.850-900 MHz uplink and 29.400-500 MHz downlink) and Mode J (145.900-146.000 MHz uplink and 435.100 MHz downlink (inverted)) linear transponders and telemetry beacons on 435.095 MHz and 29.402 MHz. AO-8's primary mission was for educational applications and amateur communications. It was in operation for six years until the battery failed on June 24, 1983.

• Nimbus 7 - . Payload: Nimbus G. Mass: 907 kg (1,999 lb). Nation: USA. Agency: NASA Greenbelt. Class: Earth. Type: Weather satellite. Spacecraft: Nimbus. USAF Sat Cat: 11080 . COSPAR: 1978-098A. Apogee: 957 km (594 mi). Perigee: 943 km (585 mi). Inclination: 99.00 deg. Period: 104.10 min.

  Environmental research. The experiments carried were a limb infrared monitoring of the stratosphere (LIMS), stratospheric and mesopheric sounder (SAMS), coastal-zone color scanner (CZCS), stratospheric aerosol measurement (SAM II), earth radiation budget (ERB), scanning multichannel microwave radiometer (SMMR), solar backscatter UV and total ozone mapping spectrometer (SBUV/TOMS), and temperature-humidity infrared radiometer (THIR). These sensors were capable of observing several parameters at and below the mesospheric levels. After 11 years in orbit, three experiments, SAM II, SBUV/TOMS, and ERB, were still functioning successfully.

• CAMEO - . Payload: CAMEO Li Canister/CAMEO Ba Canister. Mass: 350 kg (770 lb). Nation: USA. Agency: NASA Greenbelt. Class: Earth. Type: Magnetosphere satellite. Spacecraft: CAMEO. USAF Sat Cat: 11081 . COSPAR: 1978-098B. Apogee: 968 km (601 mi). Perigee: 924 km (574 mi). Inclination: 99.40 deg. Period: 104.00 min. Released barium cloud..