"Lunar Reconnaissance Orbiter" ( eng. Lunar Reconnaissance Orbiter , abbr. LRO ) - NASA automatic interplanetary station, an artificial satellite of the Moon [1] . The launch using the Atlas V launch vehicle took place on June 19, 2009 at 01:32 (Moscow time), which was almost an hour and a half later than the scheduled time. The delay was due to adverse weather conditions. [2] On June 23, 2009, the probe entered lunar orbit. [3]
| "Lunar reconnaissance orbiter" | |
|---|---|
| Lunar Reconnaissance Orbiter | |
| Customer | |
| Operator | |
| Tasks | study of the moon |
| Satellite | The moon |
| Launch pad | |
| Carrier rocket | Atlas-5 (V401) |
| Launch | June 19, 2009 21:32:00 UTC |
| Going into orbit | June 23, 2009 |
| NSSDC ID | 2009-031A |
| SCN | 35315 |
| Specifications | |
| Weight | 1846 kg |
| Power | 1850 W |
| Big axis | |
| Apocenter | |
| Pericenter | |
| Mission logo | |
| Project site | |
LROs along with the other Lunar Crater Observation and Sensing Satellite ( LCROSS ) are the vanguard of the NASA Lunar Precursor Robotic Program upon returning to the Moon. [four]
Content
Instruments
The orbiter bears on itself a complex of six scientific instruments and one instrument for testing new technologies.
- CRaTER ( C osmic Ra y T elescope for the E ffects of R adiation) - the main purpose of this device is to assess the harmful effects of cosmic rays and solar radiation on biological objects [5] .
- DLRE (The D iviner L unar R adiometer E xperiment) - measurement of the thermal radiation of the lunar surface and its changes during the day, the information needed for future work on the surface of the moon [6] .
- LAMP (The L yman A lpha M apping P roject) is a device for searching ice in unlit craters. He observes the reflection of ultraviolet radiation from stars (lines of the Lyman series ) from the lunar surface [7] .
- LEND (The L unar E xploration Neutron D etector), LEND (“Lunar Research Neutron Detector”) is a Russian-made instrument for compiling detailed maps of the content of hydrogen atoms in the lunar surface [8] [9] .
- LOLA (The L unar O rbiter L aser A ltimeter) laser altimeter to create an accurate elevation map.
- LROC (The L unarc R oconbit O rbiter C amera) is the main optical camera for obtaining photographs of the surface of the moon with a resolution of up to half a meter, with the help of which they will search for suitable places for landing manned expeditions [10] . LROC consists of three cameras: a low-resolution camera (WAC) and two high-resolution cameras (NAC), the first of which is intended for obtaining general terrain plans, and the other two are for high-resolution photographs. It is planned to take photos of approximately 8% of the lunar surface, including:
- circumpolar regions, which are now considered the most promising for the organization of the habitable base.
- 50 “high interest areas” selected by scientists;
- all places associated with human activities: landing sites for the Apollo manned spacecraft, American and Soviet automatic stations, although this is not the main purpose of the mission [11] , as well as craters formed during the fall of artificial satellites of the Moon and other vehicles;
- Mini-RF (The Miniature Radio Frequency) - testing a new lightweight radar with synthetic aperture [12] [13] [14] .
Research
It was planned that the LRO would be launched into polar orbit for a period of one year. In the additional extended phase of the mission (another 5 years), it can serve as a repeater for future lunar descent vehicles and lunar rovers.
The device will produce the following studies: [15]
- Exploring the lunar global topography
- Measurement of radiation in the lunar orbit
- The study of the lunar polar regions, which includes the search for deposits of water ice and the study of the parameters of illumination
- Drawing up highly accurate maps with drawing objects of at least 0.5 meters in order to find the best landing sites.
In early July 2009, work began on debugging and calibrating on-board instruments.
Scientific Results
On July 17, 2009, before the 40th anniversary of the first landing on the moon, photographs taken by Orbiter were published [16] . For the future, there are plans to shoot other memorable places of the Moon, such as the Lunokhod sites.
On September 6, 2011, NASA presented more detailed images of the locations of manned expeditions made by LRO, for which the probe was transferred to a lower orbit above the surface of the moon.
On August 16, 2012, NASA reported the presence of helium atoms in the atmosphere of the moon using a LAMP spectroscope. In addition, in the soil on the surface of the moon, researchers found argon atoms. [17]
In early September 2012, with the help of lightweight synthetic aperture radar (Mini-RF), deposits of water ice were discovered, the mass fraction of which is 5-10% of the substance composing the walls of the Shackleton crater. These figures overlap the previous conservative estimates of the amount of water in the lunar soil 5-10 times. The results make it even more optimistic to look at the future colonization of the Earth satellite and the construction of stationary residential bases there [18] .
Gallery
- Photos taken with the Lunar Reconnaissance Orbiter
The first image from LROC, June 30, 2009.
Place of landing of Apollo 11 .
Apollo-12 and Surveyor-3 landing sites.
Place of landing of Apollo 14 .
Place of landing of Apollo 15 .
Apollo 16 landing site.
Place of landing of Apollo 17 .
Landing stage of the lunar module "Challenger" apparatus Apollo 17 .
Place of landing Surveyor-1 .
Crater Quiet in the rays of the rising sun.
See also
- Mars Reconnaissance Orbiter
- United launch alliance
- Lunar Quest (space program)
- Lunar Precursor Robotic Program
Links
- NASA presented more detailed images of the Apollo landing sites on the moon.
- "Quickmap" - an archive of images from the satellite Lunar Reconnaissance Orbiter
- NASA probe launched to the moon - www.lenta.ru
- NASA's Lunar Reconnaissance Orbiter. Release date: 2008-02-10. Publication: lunar.gsfc.nasa.gov
- LRO's first photos
- First images of landing sites, traces of astronauts and Apollo modules on the moon , July 17, 2009.
- Photos LRO , March 17, 2010
- Interactive, multifunctional maps of the moon project LRO . University of Arizona
Notes
- ↑ Lunar Reconnaissance Orbiter Launch (inaccessible link) . lunar.gsfc.nasa.gov. Archived March 16, 2012.
- ↑ NASA launched two satellites to the Moon using a Russian rocket engine (inaccessible link is history ) . Interfax (June 19, 2009).
- ↑ LRO research probe went into orbit of the Moon , Kompyulenta (June 23, 2009). Archived June 25, 2009.
- ↑ Lunar Precursor Robotic Program (inaccessible link) . Nasa The appeal date is February 10, 2008. Archived March 16, 2012.
- ↑ Cosmic Ray Telescope for the Effects of Radiation (inaccessible link) . Boston University . The appeal date was July 15, 2008. Archived May 13, 2008.
- ↑ Diviner Lunar Radiometer Experiment (not available link) . UCLA . The appeal date is July 15, 2008. Archived July 23, 2008.
- ↑ The Lyman-Alpha Mapping Project: Seeing in the Dark . Southwest Research Institute . The appeal date is July 15, 2008.
- ↑ Russian Made Lunar Exploration Neutron Detector (inaccessible link) . Russian Academy of Sciences . The appeal date is July 15, 2008. Archived November 12, 2007.
- ↑ Russian neutron detector LEND for NASA’s Lunar Reconnaissance Orbiter project . Department №63 "Nuclear Planetology" . IKI RAS . The appeal date is February 15, 2019.
- ↑ The Lunar Reconnaissance Orbiter Camera . Arizona State University . The appeal date is July 15, 2008.
- ↑ Abandoned Spaceships .
- ↑ Yan Backgrounder: Introduction to LRO's instruments (not available link) . Xinhua China view (June 19, 2009). The appeal date is June 18, 2009. Archived March 16, 2012.
- ↑ The LRO and LCROSS research vehicles flew to the Moon . infox.ru .
- ↑ Moon race of space agencies . Gazeta.ru
- ↑ Savage, Donald; Gretchen Cook-Anderson. NASA Selects Investigations for Lunar Reconnaissance Orbiter . NASA News ( 2004-12-22 ). Archived March 16, 2012.
- ↑ NASA - LRO Sees Apollo Landing Sites
- ↑ An LRO probe has detected helium atoms in the atmosphere of the moon ( 2012-08-16 ). Archived August 18, 2012.
- ↑ Icy Moon (September 3, 2012). Archived October 19, 2012.