Editing Solar Maximum Mission (section)

{{Short description|NASA solar observatory (1980–1989)}}
{{Infobox spaceflight
| name                  = Solar Maximum Mission
| names_list            = SolarMax<br>SMM
| image                 = Smm.jpg
| image_size            = 300px

| mission_type          = [[Heliophysics]]
| operator              = [[NASA]]
| website               = [https://www2.hao.ucar.edu/mlso/solar-maximum-mission hao.ucar.edu]
| COSPAR_ID             = 1980-014A
| SATCAT                = 11703
| mission_duration      = {{time interval|14 Feb 1980|2 Dec 1989|sep=,}}

| spacecraft_bus        = [[Multimission Modular Spacecraft]]
| manufacturer          = [[Fairchild Industries]]
| dry_mass              =
| launch_mass           = {{cvt|2315|kg|lb}}
| dimensions            = {{cvt|4|xx|2.3|m|ft}}
| power                 =

| launch_date           = 14 February 1980, 15:57:00&nbsp;UTC
| launch_rocket         = [[Delta 3000|Delta 3910]]<br>D-151
| launch_site           = [[Cape Canaveral Air Force Station|Cape Canaveral]] [[Cape Canaveral Air Force Station Space Launch Complex 17|LC-17A]]
| launch_contractor     =

| disposal_type         = Deorbited
| decay_date            = 2 December 1989

| orbit_epoch           = 14 February 1980, 15:57:00 UTC
| orbit_reference       = [[geocentric orbit|Geocentric]]
| orbit_regime          = [[low Earth orbit|Low Earth]]
| orbit_periapsis       = {{cvt|508.0|km|mi}}
| orbit_apoapsis        = {{cvt|512.0|km|mi}}
| orbit_inclination     = 28.5&nbsp;degrees
| orbit_eccentricity    = 0.00029
| orbit_mean_motion     = 15.19
| orbit_period          = 94.80&nbsp;minutes
| apsis                 = gee
}}

The '''Solar Maximum Mission''' [[satellite]] (or '''SolarMax''') was designed to investigate [[Sun|Solar]] phenomena, particularly [[solar flares]]. It was launched on February 14, 1980. The SMM was the first satellite based on the [[Multimission Modular Spacecraft]] bus manufactured by Fairchild Industries, a platform which was later used for [[Landsat 4]] and [[Landsat 5]]{{r|Suzuki_1999}} as well as the [[Upper Atmosphere Research Satellite]].

After an [[Spacecraft attitude control|attitude control]] failure in November 1980 it was put in standby mode until April 1984 when it was repaired by a Shuttle mission.

The Solar Maximum Mission ended on December 2, 1989, when the spacecraft [[Atmospheric reentry|re-entered the atmosphere]] and burned up over the Indian Ocean.{{r|hao-smm}}