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... in solar system. Orbital parameters were close to planned ones: 1398-km (868.7-mi) periapsis altitude, 12-hr 34-min period, and 64.5° inclination. Spacecraft propulsion system and attitude ... Space Station antenna at Goldstone, Calif. New orbital parameters were 1394-km (866.2-mi) periapsis altitude, 11-hr 57- min 12-sec period, and 64.34° inclination. Data from remote ...

... by 17-sec engine firing to compensate for effects of dust storm on mission objectives. Periapsis was raised from 1388 km (862 mi) to 1650 km (1025 mi) to expand area ... where photos did not overlap. Period was increased by 1 min 19 sec to place periapsis in middle of Goldstone viewing period for maximum data return. ''(NASA Release 71-252; Pasadena ...

... lower atmosphere, and would study the interactions of these regions with the solar wind. At periapsis (orbital low point) the Pioneer orbiter would come as close as 150km (90m) to the ... to make one revolution on its axis; the slow rotation of the planet under the periapsis of the orbit would permit closeup radar mapping of the entire circumference. The four probes ...

... to be very convenient, especially when using canonical units. Given the true anomaly and the periapsis distance, the time of flight in a given central force field is readily determined from ... inverse problem, that of finding the true anomaly given the time of flight and the periapsis distance, particularly for short times of flight presents significant difficulties. These difficulties involve the preservation ...

... = 1035.0 kg NSSDC_ID = 1989-033B Webpage = Semimajor_Axis = Eccentricity = Inclination = Orbital_Period = Apoapsis = Periapsis = Orbits = Alternate Names = Venus Radar Mapper, 19969 Experiments = http://nssdc.gsfc.nasa.gov/nmc/experimentSearch ... 24 May until 02 August 1993. At the end of aerobraking, the orbit had a periapsis of 180 km, an apoapsis of 540 km, and a period of 94 minutes. Cycle ...

... 7310 km mi abbr=on lk=out from centre, 939 km (583 mi) from surface Periapsis = convert 6586 km mi abbr=on from centre, 215 km (134 mi) from surface Orbits ...

... 7310 km mi abbr=on lk=out from centre, 939 km (583 mi) from surface Periapsis = convert 6586 km mi abbr=on from centre, 215 km (134 mi) from surface Orbits ...

... original two-spacecraft mission-assigned 65° inclination, 12-hr period, and 1200-km (750-mi) periapsis (low point in orbit around Mars) to Mariner-I, with Nov. 14, 1971, arrival date ...

... and 158° west longitude. Mars 3 continued flight into orbit with 1500-km (930-mi) periapsis and 11-day period. Tass said signals from landing capsule "were received and recorded on ...

... radiation intensity increased 10-fold every two hours, reaching 65 million ev 90 min before periapsis, tense scientists paced the floor of ARC'S Mission Control with fingers crossed. At 9 ...

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