Surveyor 2

Last updated
Surveyor 2
Surveyor mockup.jpg
Surveyor model on Earth
Mission typeLunar lander
Operator NASA
COSPAR ID 1966-084A OOjs UI icon edit-ltr-progressive.svg
SATCAT no. 02425
Mission duration45 hours 3 min. to last contact; 62 hours 46 min. to failed soft landing
Spacecraft properties
Manufacturer Hughes Aircraft
Launch mass995.2 kilograms (2,194 lb) [1]
Dry mass292 kilograms (644 lb)
Start of mission
Launch dateSeptember 20, 1966, 12:32:00 (1966-09-20UTC12:32Z) UTC [1]
Rocket Atlas LV-3C Centaur-D AC-7
Launch site Cape Canaveral LC-36A
Lunar impact (failed landing)
Impact dateSeptember 23, 1966, 03:18:00 UTC
Impact site 4°00′S11°00′W / 04.0°S 11.0°W / -04.0; -11.0
 

Surveyor 2 was to be the second lunar lander in the uncrewed American Surveyor program to explore the Moon. After launch on September 20, 1966 a mid-course correction failure resulted in the spacecraft losing control. Contact was lost with the spacecraft at 9:35 UTC, September 22.

Contents

Background

On February 3, 1966, the Luna 9 spacecraft was the first spacecraft to achieve a lunar soft landing and to transmit photographic data to Earth. On May 30, Surveyor 1 launched, landing on Oceanus Procellarum on June 2. This craft also transmitted photographic data back to Earth.

This spacecraft was the second of a series designed to achieve a soft landing on the Moon and to return lunar surface photography for determining characteristics of the lunar terrain for Apollo program lunar landing missions. [2] Besides transmitting photos, Surveyor 2 was planned to perform a 'bounce', to photograph underneath its own landing site. It was also equipped to return data on radar reflectivity of the lunar surface, bearing strength of the lunar surface, and spacecraft temperatures for use in the analysis of lunar surface temperatures.

Launch

The launch took place from Space Launch Complex 36A at Cape Kennedy, Florida aboard an Atlas-Centaur rocket. [3] Liftoff was at 12:32 UTC on 20 September 1966. [4]

Failure

The target area proposed was within Sinus Medii. The Atlas-Centaur had placed Surveyor 2 on a path to the Moon that was only 130 km from its aim point. During the midcourse correction maneuver one vernier thruster failed to ignite, resulting in unbalanced thrust that caused the spacecraft to tumble for its remaining 54 hours. Attempts to salvage the mission failed. Contact was lost with the spacecraft at 9:35 UTC, September 22. The spacecraft was targeted at Sinus Medii, but crashed near Copernicus crater. The spacecraft was calculated to have impacted the lunar surface at 03:18 UTC, September 23, 1966. Its weight on impact was 644 lb (292 kg), and speed was about 6000 miles an hour (2.6 km/s = 5840 mph), slightly over lunar escape velocity (2.4 km/s) and similar to the impact velocities of the Ranger program spacecraft. [5]

Aftermath

Lunar exploration continued to be challenging. The next Soviet mission, Cosmos 111, was launched on March 1, 1966, but failed to reach a proper lunar trajectory, re-entering Earth's atmosphere two days later. Surveyor 3 soft-landed on April 20, 1967, at the Mare Cognitum portion of the Oceanus Procellarum. It transmitted a total of 6,315 television images to the Earth.

There were seven Surveyor missions; five were successful. Surveyors 2 and 4 failed. Each consisted of a single uncrewed spacecraft designed and built by Hughes Aircraft Company. The precise location of the Surveyor 2 crash site is unknown.

Centaur upper stage

The Centaur upper stage of the rocket used to launch Surveyor continued on its original trajectory past the Moon, placing it into a solar orbit similar to that of the Earth. The Centaur was untracked from that point forward. In August 2020, NASA announced the sighting of an object in a solar orbit which could shortly make a close pass with the Earth. [6] On September 23, 2020, NASA announced that this was likely the lost Centaur booster, and likely to be re-captured into Earth orbit. This would be the second time that a rocket upper stage has done so, after the upper stage of a Saturn V rocket from the Apollo 12 launch re-entered Earth orbit in 2002. [7] In December 2020, NASA confirmed that it was the lost Centaur stage. [8]

See also

Related Research Articles

<span class="mw-page-title-main">Surveyor program</span> 1960s NASA program to soft-land robotic probes on the Moon

The Surveyor program was a NASA program that, from June 1966 through January 1968, sent seven robotic spacecraft to the surface of the Moon. Its primary goal was to demonstrate the feasibility of soft landings on the Moon. The Surveyor craft were the first American spacecraft to achieve soft landing on an extraterrestrial body. The missions called for the craft to travel directly to the Moon on an impact trajectory, a journey that lasted 63 to 65 hours, and ended with a deceleration of just over three minutes to a soft landing.

<span class="mw-page-title-main">Surveyor 3</span> American lunar lander

Surveyor 3 was the third lander of the American uncrewed Surveyor program sent to explore the surface of the Moon in 1967. It was the first mission to carry a surface-soil sampling-scoop.

<span class="mw-page-title-main">Surveyor 1</span> Lunar lander spacecraft

Surveyor 1 was the first lunar soft-lander in the uncrewed Surveyor program of the National Aeronautics and Space Administration. This lunar soft-lander gathered data about the lunar surface that would be needed for the crewed Apollo Moon landings that began in 1969. The successful soft landing of Surveyor 1 on the Ocean of Storms was the first by an American space probe on any extraterrestrial body, occurring on the first attempt and just four months after the first soft Moon landing by the Soviet Union's Luna 9 probe.

<span class="mw-page-title-main">Ranger program</span> American uncrewed lunar space missions in the 1960s

The Ranger program was a series of uncrewed space missions by the United States in the 1960s whose objective was to obtain the first close-up images of the surface of the Moon. The Ranger spacecraft were designed to take images of the lunar surface, transmitting those images to Earth until the spacecraft were destroyed upon impact. A series of mishaps, however, led to the failure of the first six flights. At one point, the program was called "shoot and hope". Congress launched an investigation into "problems of management" at NASA Headquarters and Jet Propulsion Laboratory. After two reorganizations of the agencies, Ranger 7 successfully returned images in July 1964, followed by two more successful missions.

<span class="mw-page-title-main">Luna programme</span> Robotic spacecraft missions to the Moon by the Soviet Union (1958–1976)

The Luna programme, occasionally called Lunik by western media, was a series of robotic spacecraft missions sent to the Moon by the Soviet Union between 1959 and 1976. The programme accomplished many firsts in space exploration, including first flyby of the Moon, first impact of the Moon and first photos of the far sise of the Moon. Each mission was designed as either an orbiter or lander. They also performed many experiments, studying the Moon's chemical composition, gravity, temperature, and radiation.

<span class="mw-page-title-main">Luna 9</span> 1966 uncrewed space mission of the Soviet Unions Luna programme

Luna 9 (Луна-9), internal designation Ye-6 No.13, was an uncrewed space mission of the Soviet Union's Luna programme. On 3 February 1966, the Luna 9 spacecraft became the first spacecraft to achieve a survivable landing on a celestial body.

<span class="mw-page-title-main">Luna 11</span>

Luna 11 was an uncrewed space mission of the Soviet Union's Luna program. It was also called Lunik 11. Luna 11 was launched towards the Moon from an Earth-orbiting platform and entered lunar orbit on 27 August 1966.

<span class="mw-page-title-main">Luna 13</span>

Luna 13 was an uncrewed space mission of the Luna program by Soviet Union.

<i>Luna 21</i> 1973 Soviet uncrewed lunar mission

Luna 21 was an uncrewed space mission, and its spacecraft, of the Luna program, also called Lunik 21, in 1973. The spacecraft landed on the Moon and deployed the second Soviet lunar rover, Lunokhod 2. The primary objectives of the mission were to collect images of the lunar surface, examine ambient light levels to determine the feasibility of astronomical observations from the Moon, perform laser ranging experiments from Earth, observe solar X-rays, measure local magnetic fields, and study mechanical properties of the lunar surface material.

<span class="mw-page-title-main">Surveyor 6</span>

Surveyor 6 was the sixth lunar lander of the American uncrewed Surveyor program that reached the surface of the Moon. Surveyor 6 landed on the Sinus Medii. A total of 30,027 images were transmitted to Earth.

<span class="mw-page-title-main">Lander (spacecraft)</span> Type of spacecraft

A lander is a spacecraft that descends towards, then comes to rest on the surface of an astronomical body other than Earth. In contrast to an impact probe, which makes a hard landing that damages or destroys the probe upon reaching the surface, a lander makes a soft landing after which the probe remains functional.

<span class="mw-page-title-main">Lunar Orbiter 1</span> 1966 NASA spacecraft orbiting the Moon

The 1966 Lunar Orbiter 1 robotic spacecraft mission, part of NASA's Lunar Orbiter program, was the first American spacecraft to orbit the Moon. It was designed primarily to photograph smooth areas of the lunar surface for selection and verification of safe landing sites for the Surveyor and Apollo missions. It was also equipped to collect selenodetic, radiation intensity, and micrometeoroid impact data.

The Lunar Precursor Robotic Program (LPRP) is a NASA program that uses robotic spacecraft to prepare for future crewed missions to the Moon. The program gathers data such as lunar radiation, surface imaging, areas of scientific interest, temperature and lighting conditions, and potential resource identification.

<span class="mw-page-title-main">Moon landing</span> Arrival of a spacecraft on the Moons surface

A Moon landing or lunar landing is the arrival of a spacecraft on the surface of the Moon. This includes both crewed and robotic missions. The first human-made object to touch the Moon was the Soviet Union's Luna 2, on 13 September 1959.

<span class="mw-page-title-main">Exploration of the Moon</span> Missions to the Moon

The physical exploration of the Moon began when Luna 2, a space probe launched by the Soviet Union, made an impact on the surface of the Moon on September 14, 1959. Prior to that the only available means of exploration had been observation from Earth. The invention of the optical telescope brought about the first leap in the quality of lunar observations. Galileo Galilei is generally credited as the first person to use a telescope for astronomical purposes; having made his own telescope in 1609, the mountains and craters on the lunar surface were among his first observations using it.

<span class="mw-page-title-main">Outline of space exploration</span> Overview of and topical guide to space exploration

The following outline is provided as an overview of and topical guide to space exploration.

<span class="mw-page-title-main">Chang'e 5</span> Chinese lunar exploration mission

Chang'e 5 was the fifth lunar exploration mission in the Chinese Lunar Exploration Program of CNSA, and China's first lunar sample-return mission. Like its predecessors, the spacecraft is named after the Chinese moon goddess, Chang'e. It launched at 20:30 UTC on 23 November 2020, from Wenchang Spacecraft Launch Site on Hainan Island, landed on the Moon on 1 December 2020, collected ~1,731 g (61.1 oz) of lunar samples, and returned to the Earth at 17:59 UTC on 16 December 2020.

The (Japanese) Lunar Exploration Program is a program of robotic and human missions to the Moon undertaken by the Japanese Aerospace Exploration Agency (JAXA) and its division, the Institute of Space and Astronautical Science (ISAS). It is also one of the three major enterprises of the JAXA Space Exploration Center (JSPEC). The main goal of the program is "to elucidate the origin and evolution of the Moon and utilize the Moon in the future".

<span class="mw-page-title-main">2024 in spaceflight</span> Spaceflight-related events during the year 2024

This article documents notable spaceflight events that have happened or are going to happen during the year 2024. Upcoming astronomical and space events for 2024 have been presented in The New York Times.

References

  1. 1 2 "Surveyor 2". NASA's Solar System Exploration website. Retrieved December 2, 2022.
  2. "Surveyor 2 on way". The Age - 21 September 1966. 21 September 1966. Retrieved 2009-11-15.
  3. "Central Moon Landing Try for Surveyor 2". The Deseret News. 19 September 1966. Retrieved 2009-11-15.
  4. "Surveyor 2". NASA.
  5. "Boeing: Satellite Development Center - Scientific Exploration - Surveyor". Archived from the original on 2010-02-07. Retrieved 2010-03-31.
  6. "JPL Small-Body Database Browser".
  7. Meghan Bartels (September 23, 2020). "Earth may get a new minimoon — but it may just be 1960s space junk". Space.com.
  8. "New Data Confirm 2020 SO to be the Upper Centaur Rocket Booster from the 1960's". NASA. 2 December 2020. Retrieved 2 December 2020.