Mariner 5

Mariner 5
Mission type	Venus flyby
Operator	NASA / JPL
COSPAR ID	1967-060A
SATCAT no.	2845
Mission duration	1 year, 4 months and 22 days
Spacecraft properties
Manufacturer	Jet Propulsion Laboratory
Launch mass	244.9 kilograms (540 lb)
Power	170 W
Start of mission
Launch date	June 14, 1967, 06:01:00 UTC
Rocket	Atlas-SLV3 Agena-D
Launch site	Cape Canaveral LC-12
End of mission
Last contact	December 4, 1967; Loss of contact; October 14, 1968; Briefly regained
Flyby of Venus
Closest approach	October 19, 1967
Distance	3,990 kilometers (2,480 miles)
Instruments
	Ultraviolet Photometer ; Two-Frequency Beacon Receiver ; S-Band Occultation ; Helium-Vector Magnetometer ; Solar-Plasma Probe ; Trapped Radiation Detector
	Mariner program ← Mariner 4 Mariner 6 →

Mariner 5 (Mariner V or Mariner Venus 1967) was a spacecraft of the Mariner program that carried a complement of experiments to probe Venus' atmosphere by radio occultation, measure the hydrogen Lyman-alpha (hard ultraviolet) spectrum, and sample the solar particles and magnetic field fluctuations above the planet. Its goals were to measure interplanetary and Venusian magnetic fields, charged particles, plasma, radio refractivity and UV emissions of the Venusian atmosphere.

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