Venera 15

Venera 15 (Венера-15 meaning Venus 15) was a spacecraft sent to Venus by the Soviet Union.wikipedia
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Venera 16

16
The spacecraft was identical to Venera 16 and based on modifications to the earlier Venera space probes.
The spacecraft was identical to Venera 15 and based on modifications to the earlier Venera space probes.The latest data from the spacecraft were received on June 13, 1985, when it responded to the signal sent From the earth for «Vega-1».

Venera 14

14 Venera 14 landerВенера-14
The Venera 15 and 16 spacecraft were identical and were based on modifications to the orbiter portions of the Venera 9 and Venera 14 probes.

List of missions to Venus

List of Venus MisisonsVenus missions
* List of missions to Venus

Baikonur Cosmodrome Site 200

200/39Site 200/39Site 200/40
Venera 14, Venera 15, Vega 1, Fobos 1, the failed Mars-96, and ExoMars were launched from area 39.

Venera

Venera programVenera programmeThe Soviet space probe
The spacecraft was identical to Venera 16 and based on modifications to the earlier Venera space probes.
The Venera program established a number of precedents in space exploration, among them being the first human-made devices to enter the atmosphere of another planet (Venera 4 on October 18, 1967), the first to make a soft landing on another planet (Venera 7 on December 15, 1970), the first to return images from another planet's surface (Venera 9 on June 8, 1975), and the first to perform high-resolution radar mapping scans (Venera 15 on June 2, 1983).

Venus

Morning Starevening starplanet Venus
Venera 15 (Венера-15 meaning Venus 15) was a spacecraft sent to Venus by the Soviet Union.
The successful Soviet Venera program came to a close in October 1983, when Venera 15 and 16 were placed in orbit to conduct detailed mapping of 25% of Venus's terrain (from the north pole to 30°N latitude)

Spacecraft

spaceshipspaceshipsspace ship
Venera 15 (Венера-15 meaning Venus 15) was a spacecraft sent to Venus by the Soviet Union.

Soviet Union

SovietUSSRSoviets
Venera 15 (Венера-15 meaning Venus 15) was a spacecraft sent to Venus by the Soviet Union.

Coordinated Universal Time

UTCUTC-3UTC-4
Venera 15 was launched on June 2, 1983 at 02:38:39 UTC and reached Venus' orbit on October 10, 1983.

Apsis

perigeeperihelionapogee
The spacecraft was in a nearly polar orbit with a periapsis ~1000 km, at 62°N latitude, and apoapsis ~65000 km, with an inclination ~90°, the orbital period being ~24 hours. To get to Venus, Venera 15 was placed in a heliocentric orbit with perihelion of 0.71 AU, apohelion of 1.01 AU, eccentricity of 0.17, orbital inclination of 2.3 degrees and orbital period of 293 days.

Venera 9

Venera 9 landerimage and video transfer
The Venera 15 and 16 spacecraft were identical and were based on modifications to the orbiter portions of the Venera 9 and Venera 14 probes.

Synthetic-aperture radar

synthetic aperture radarSARsynthetic aperture
Each spacecraft consisted of a 5 m long cylinder with a 0.6 m diameter, 1.4 m tall parabolic dish antenna for the synthetic aperture radar (SAR) at one end.
The Venera 15 and Venera 16 followed later by the Magellan space probe mapped the surface of Venus over several years using synthetic aperture radar.

Radar

radar stationradarsradar system
A radar was necessary in this mission because nothing else would be able to penetrate the dense clouds of Venus.

Heliocentric orbit

Heliocentrictrans-Mars injectionsolar orbit
To get to Venus, Venera 15 was placed in a heliocentric orbit with perihelion of 0.71 AU, apohelion of 1.01 AU, eccentricity of 0.17, orbital inclination of 2.3 degrees and orbital period of 293 days.

Orbital eccentricity

eccentricityeccentriceccentricities
To get to Venus, Venera 15 was placed in a heliocentric orbit with perihelion of 0.71 AU, apohelion of 1.01 AU, eccentricity of 0.17, orbital inclination of 2.3 degrees and orbital period of 293 days.

Orbital inclination

inclinationinclinedtilted
The spacecraft was in a nearly polar orbit with a periapsis ~1000 km, at 62°N latitude, and apoapsis ~65000 km, with an inclination ~90°, the orbital period being ~24 hours. To get to Venus, Venera 15 was placed in a heliocentric orbit with perihelion of 0.71 AU, apohelion of 1.01 AU, eccentricity of 0.17, orbital inclination of 2.3 degrees and orbital period of 293 days.

Orbital period

periodsynodic periodsynodic
To get to Venus, Venera 15 was placed in a heliocentric orbit with perihelion of 0.71 AU, apohelion of 1.01 AU, eccentricity of 0.17, orbital inclination of 2.3 degrees and orbital period of 293 days.

Radar altimeter

radio altimeterradar altimetryelectronic altimeter

Baikonur Cosmodrome

BaikonurBaykonur CosmodromeBaikonur space center