Viking 2

Launch data: Designation  08199 / 75083A Launch date  09 Sep 1975 - 18:39 UT Launch site  CC, LC-41 Launch vehicle  Titan-3E Centaur-D1T (#23E-3/TC-3) Mission  Mars orbiter Satellite type   Heliocentric orbit Perihelion / Aphelion  1.006 x 1.669 AU Eccentricity  0.248 Inclination  2.92 deg Period  565 days Mars orbit on 1976 Aug 07.47: Perihelion / Aphelion  1502 x 35728 km Eccentricity  0.778 Inclination  55.6 deg Period  1644.6 min Mars orbit on 1976 Dec 20: Perihelion / Aphelion  787 x 35463 km Eccentricity  0.806 Inclination  80 deg Period  1590 min Mars orbit on 1977 Oct 23: Perihelion / Aphelion  302 x 33176 km Eccentricity  0.816 Inclination  80.3 deg Period  1439 min

Spacecraft data: Prime contractor   Operator   Platform   Mass at launch  2325 kg (full) Dry Mass   kg Basic shape  Octagonal box + 4 vanes Dimension  3.3 high - 1.8 wide - 1.5 deep Solar array   Stabilization   DC power   Design lifetime  44 years? - In Mars orbit

Viking lander model

Mission details:

• Entered areocentric orbit 1976 Aug 7.47, ejected lander 1976 Sep 03.82.
• Viking 2 Lander (09408 / 75083C) landed on Mars 03 Sep 1976 at 48N 226W (Utopia Planitia, Cebrenia province).
• The Orbiter passed 23 km from Deimos 1977 Oct 15.
• Transmissions ceased on 1978 Jul 24 when attitude control gas exhausted.
• Orbital inclination changed to 75 deg on 1976 Sep 30, after manoeuvre.

On September 3, 1976, Viking 2 lands on Utopia Planitia on Mars. It would function for 1,316 days, finally shutting down on April 11, 1980.