Editing Atlas II (section)

== Specifications ==
[[File:Atlas evolution.png|thumb|Atlas launch vehicle evolution, including the unflown Atlas V HLV (far right)]]
* '''Primary contractor''': Lockheed Martin (airframe, assembly, avionics, test and systems integration)<ref>Spaceflight Now, [http://www.spaceflightnow.com/atlas/ac162/011007atlas2as.html Atlas IIAS] (accessed September 24, 2014)</ref>
* '''Principal subcontractors''': Rocketdyne (first stage engines), Pratt & Whitney (second stage engines), Honeywell & Teledyne (avionics), and Thiokol (solid rocket boosters)<ref name=ppg />
* '''Engines''':
** '''First stage''': 1 × [[RS-56]]-OSA
** '''Boosters''' (MA-5A): 1 × [[RS-56]]-OBA each (2 total)
** '''Boosters''' (Atlas IIAS): 1 × [[Castor 4A]] each (4 total)
** '''Second stage''': 2 × [[RL10]]A-3-3A or [[RL10]]A-4
* '''Thrust''': 494,500&nbsp;lbf (2,200&nbsp;kN)
* '''Length''': Up to 156&nbsp;ft (47.54 m); 16&nbsp;ft (4.87 m) high engine cluster
* '''Core diameter''': 10 feet (3.04 m)
* '''Gross liftoff weight''': 414,000&nbsp;lb (204,300&nbsp;kg)
* '''Fairing options''': 3 (Medium, Large, Extended)<ref name=ppg />
* '''Models''': II, IIA, and IIAS
* '''Launch Sites''': [[Cape Canaveral Space Force Station|Cape Canaveral]], [[Cape Canaveral Launch Complex 36|LC-36]] and [[Vandenberg Space Force Base|Vandenberg]], [[Vandenberg Space Launch Complex 3|SLC-3E]]