Mars Reconnaissance Orbiter (MRO) is a spacecraft designed to study the geology and climate of Mars, provide reconnaissance of future landing sites, and relay data from surface missions back to Earth. In mid-December, LRO will shift into an elliptical orbit with its lowest altitude at 19 miles (30 km) over the south pole, and its highest point at 124 miles (200 km) over the north pole. After two and a half years in a near-circular polar orbit, LRO entered an elliptical polar orbit on 11 December 2011 with a periapsis (point where the LRO is closest to the surface) near the south pole, and the apoapsis (point where LRO is furthest from the surface) near the north pole.

Apollo 17 landing site taken by LRO in its lower orbit, with 25 cm per pixel. In mid-December, LRO will shift into an elliptical orbit with its lowest altitude at 19 miles (30 km) over the south pole, and its highest point at 124 miles (200 km) over the north pole.

At this altitude, how fast would something be moving relative to the surface? Apollo 17 landing site from the regular 50 km altitude and about 50 cm per pixel.

Orbit determination of the Lunar Reconnaissance Orbiter ... main orbiter Kaguya, in a 100 km-altitude circular orbit, and two sub-satellites which participated in a VLBI exper-iment. LRO must be somewhat faster than this at periapsis due to its elliptical orbit.

One of those sub-satellites also provided relay capa- bility for the radio signals, between ground stations and the main orbiter. Table 4: Low-altitude LRO orbit for higher resolution imagery 39) 40) Apollo 17 landing site taken by LRO in its lower orbit, with 25 cm per pixel. NASA’s Goddard Space Flight Center Minimum Energy Lunar Transfer ~ 4 Days Lunar Orbit Insertion Sequence, 4-6 Days Commissioning Phase, 30 x 216 km Altitude Quasi-Frozen Orbit, Up to 60 Days Polar Mapping Phase, 50 km Altitude Circular Orbit, At least 1 Year Launch: October 28, 2008 Nominal End of Mission: February 2010 LRO … Lunar Reconnaissance Orbiter Mission Objectives.

In November 2006, after five months of aerobraking, it entered its final science orbit and began its primary science phase. The orbital … LRO has a ground speed of a bit over 1600 meters (5249 feet) per second, and the shortest NAC exposure time is 0.34 millseconds, so images taken from this low altitude are smeared down track a bit. A low Earth orbit (LEO) is an orbit around Earth with an altitude between 160 kilometers (Template:Convert/round mi) (orbital period of about 88 minutes), and 2,000 kilometers (Template:Convert/round mi) (about 127 minutes). Components of the Early Apollo Science Experiments Package (EASEP) are easily seen, as well. This paper will define the LRO launch window and the science and engineering constraints that drive it.

This view has close to the smallest pixel size possible in the current LRO orbit. Objects below approximately 160 kilometers (Template:Convert/round mi) will experience very rapid orbital decay and altitude loss. Apollo 17 landing site from the regular 50 km altitude and about 50 cm per pixel.

The orbit is “near”-circular, as LRO’s altitude can vary between its lowest altitude (periapsis) of 35 km and its highest altitude (apoapsis) of 65 km over a twenty eight day period. Note: Low Earth orbit (LEO), medium altitude Earth orbit (MEO), geostationary orbit (GEO).

The Lunar Reconnaissance Orbiter's Lunar Orbiter Laser Altimeter (LOLA) instrument provides a series of laser altimetry measurements across the surface of Earth's moon. Lunar Orbit Insertion Sequence, 4-6 Days Commissioning Phase, 30 x 216 km Altitude Quasi-Frozen Orbit, Up to 60 Days Polar Mapping Phase, 50 km Altitude Circular Orbit, At least 1 Year Launch: October 28, 2008 Nominal End of Mission: February 2010 LRO Mission Overview LRO will utilize a direct minimum energy lunar transfer and have a launch window of three days every two weeks. It was launched on August 12, 2005 and reached Mars on March 10, 2006.

The footpads of the LM are clearly discernible.

2007).

The LRO spacecraft is now in a higher orbit, so the images of the historic exploration sites taken in these two low orbit months will remain the best (~25 cm per pixel), until a future mission. At this altitude, very small details of Tranquility Base can be discerned. At the new, slightly higher altitude, the station is expected to expend about 8,000 pounds of propellant a year.

At the time the rover was 29 meters northwest of the lander, but the rover has likely moved since the image was acquired.

This is LROC's first picture of Apollo 11 after LRO dropped into its 50 km mapping orbit. Template:Infobox spaceflight The Lunar Reconnaissance Orbiter (LRO) is a NASA robotic spacecraft currently orbiting the Moon in an eccentric polar mapping orbit. Similar LRO maneuvers on 31 October 2011 allowed even more sites to be imaged at the lower altitudes (and thus higher resolution). The eccentricity is 0.0054 ±0.0019, and never more than 0.010, with the spacecraft altitude generally between 35 and 65 km (referenced to a 1,737.4 km sphere). From an altitude of 82 kilometers the LROC Narrow Angle Camera pixel scale was 0.85 meters (33 inches), allowing a sharper view of the lander and Yutu-2 rover. However, the smear is hardly noticeable and features at the … You may need to clear any previously entered orbit critiera to see the new data.

Credit: NASA/Goddard/ASU.


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