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Color View of Eros' Saddle
| title |
Color View of Eros' Saddle |
| description |
Color imaging of Eros from the NEAR Shoemaker spacecraft has shown the asteroid's color variations are very subdued when compared to those of other planetary bodies, such as Mars. However, both the imager and the near-infrared spectrometer have detected discernible color differences between parts of the asteroid. One location on Eros with distinctive color is the eastern side of the 'saddle.' This color composite image of that region was taken April 2, 2000, from an orbital altitude of 201 kilometers (125 miles). In this false color representation, the red and green image planes were taken in different wavelengths of infrared light, and the blue image plane was taken in blue light. NEAR scientists interpret the bright and greenish-gray appearing regions near the rim of the saddle to represent relatively fresh exposures of subsurface soil. In contrast, the pinkish looking soil covering other areas is thought to have been modified by exposure to small impacts and the solar wind. Built and managed by The Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland, NEAR was the firstspacecraft launched in NASA's Discovery Program of low-cost, small-scale planetary missions. See the NEAR web page at http://near.jhuapl.edu [ http://near.jhuapl.edu ] for more details. |
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Eros' Saddle
| title |
Eros' Saddle |
| date |
04.02.2000 |
| description |
Color imaging of Eros from the NEAR Shoemaker spacecraft shows the asteroid's color variations are very subdued when compared to those of other planetary bodies, such as Mars. However, both the imager and the near-infrared spectrometer have detected discernible color differences between parts of the asteroid. One location on Eros with distinctive color is the eastern side of the "saddle." This color composite image of that region was taken April 2, 2000, from an orbital altitude of 201 kilometers (125 miles). In this false color representation, the red and green image planes were taken in different wavelengths of infrared light, and the blue image plane was taken in blue light. NEAR scientists interpret the bright and greenish-gray appearing regions near the rim of the saddle to represent relatively fresh exposures of subsurface soil. In contrast, the pinkish looking soil covering other areas is thought to have been modified by exposure to small impacts and the solar wind. Built and managed by The Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland, NEAR was the first spacecraft launched in NASA's Discovery Program of low-cost, small-scale planetary missions. See the NEAR web page at http://near.jhuapl.edu for more details. *Image Credit*: NASA |
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Location of the NEAR Shoemak
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| Title |
Location of the NEAR Shoemaker Landing Site |
| Description |
The location of NEAR Shoemaker's planned landing site is shown in this image mosaic taken on December 3, 2000, from an orbital altitude of 200 kilometers (124 miles). In this view, south is to the top and the terminator (the imaginary line dividing day from night) lies near the equator. The landing site (at the tip of the arrow) is near the boundary of two distinctly different provinces, both of which the spacecraft will photograph as it descends. To the south and east (above and to the left) lies older, cratered terrain, while to the north (down) is the saddle-shaped feature Himeros, whose lesser density of superposed craters indicates relatively recent resurfacing by geologic processes. Built and managed by The Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland, NEAR was the first spacecraft launched in NASA's Discovery Program of low-cost, small-scale planetary missions. See the NEAR web page at http://near.jhuapl.edu for more details. |
| Date |
02.12.2001 |
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NEAR Shoemaker's Path
| Title |
NEAR Shoemaker's Path |
| Description |
This plot shows NEAR Shoemaker's projected path from orbit to the surface of Eros on Feb. 12. Viewed from the sun, Eros is moving in a clockwise direction as it spins on its axis, while the spacecraft moves counterclockwise in a circular orbit 35 kilometers (22 miles) from the asteroid's center. The pair will be about 316 million kilometers (196 million miles) from Earth. NEAR Shoemaker will de-orbit with a short engine burn at 10:31 a.m. EST, about 4 1/2 hours before it's scheduled to reach the surface. The final leg of the controlled descent begins with the spacecraft about 5 kilometers (3 miles) above Eros, it will then execute an unprecedented series of four engine burns designed to slow its descent from about 20 mph to about 5 mph. NEAR Shoemaker is expected to touch down in an area bordering Himeros, the asteroid's distinctive saddle-shaped depression, after providing the highest-resolution images ever taken of Eros' boulder-strewn, cratered terrain. Built and managed by The Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland, NEAR was the first spacecraft launched in NASA's Discovery Program of low-cost, small-scale planetary missions. See the NEAR web page at http://near.jhuapl.edu for more details. |
| Date |
02.08.2001 |
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Boulderado
| Title |
Boulderado |
| Description |
One of the most recognizable surface features on Eros is the boulder-filled, concave depression at the southwestern edge of the saddle-shaped Himeros. When it was first glimpsed early in NEAR Shoemaker's orbital mission the area was informally tagged "Boulderado. |
| Date |
02.06.2001 |
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Eros' Battered Surface
| Title |
Eros' Battered Surface |
| Description |
NEAR Shoemaker captured this image of Eros on November 28, 2000, while taking a color flyover movie from 193 kilometers (120 miles) away. This particular view simultaneously shows several key indicators of the battering Eros' surface has sustained over the eons. Most obvious are the countless craters, some barely big enough for the camera to see. Less obvious are the signs of a layer of fragmental debris, or regolith, blanketing the surface. Among them are the rounded horizon, the boulders visible in the distance, and the bright patches of exposed subsurface material on steep slopes. This scene is approximately 6.6 kilometers (4.1 miles) across. Built and managed by The Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland, NEAR was the first spacecraft launched in NASA's Discovery Program of low-cost, small-scale planetary missions. See the NEAR web page at http://near.jhuapl.edu for more details. |
| Date |
12.06.2000 |
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Final Eros Images: Last, Clo
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| Title |
Final Eros Images: Last, Closest Image of Eros |
| Description |
This is the last image of asteroid 433 Eros received from NEAR Shoemaker. Taken from a range of 120 meters (394 feet), it measures 6 meters (20 feet) across. What we can see of the rock at the top of image measures 4 meters (12 feet) across. The streaky lines at the bottom indicate loss of signal as the spacecraft touched down on the asteroid during transmission of this image. Built and managed by The Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland, NEAR was the first spacecraft launched in NASA's Discovery Program of low-cost, small-scale planetary missions. See the NEAR web page at http://near.jhuapl.edu for more details. |
| Date |
02.12.2001 |
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Final Eros Images: Range 1,1
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| Title |
Final Eros Images: Range 1,150 meters (3,773 feet) |
| Description |
NEAR Shoemaker took this image of asteroid 433 Eros from a range of 1,150 meters (3,773 feet). The image is 54 meters (177 feet) across. The large rock at lower left is 7.4 meters (24 feet) across. Built and managed by The Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland, NEAR was the first spacecraft launched in NASA's Discovery Program of low-cost, small-scale planetary missions. See the NEAR web page at http://near.jhuapl.edu for more details. |
| Date |
02.12.2001 |
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Final Eros Images: Range 250
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| Title |
Final Eros Images: Range 250 meters (820 feet) |
| Description |
NEAR Shoemaker's image of asteroid 433 Eros taken from a range of 250 meters (820 feet). The image is 12 meters (39 feet) across. The cluster of rocks at the upper right measures 1.4 meters (5 feet) across. Built and managed by The Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland, NEAR was the first spacecraft launched in NASA's Discovery Program of low-cost, small-scale planetary missions. See the NEAR web page at http://near.jhuapl.edu for more details. |
| Date |
02.12.2001 |
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Final Eros Images: Range 700
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| Title |
Final Eros Images: Range 700 meters (2,300 feet) |
| Description |
NEAR Shoemaker's image of asteroid 433 Eros taken from a range of 700 meters (2,300 feet). The image is 33 meters (108 feet) across. The large, oblong rock casting a big shadow measures 7.4 meters (24 feet) across. Built and managed by The Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland, NEAR was the first spacecraft launched in NASA's Discovery Program of low-cost, small-scale planetary missions. See the NEAR web page at http://near.jhuapl.edu for more details. |
| Date |
02.12.2001 |
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The Environs of NEAR Shoemak
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| Title |
The Environs of NEAR Shoemaker's Landing Site |
| Description |
This image mosaic of Eros' southern hemisphere, taken by NEAR Shoemaker on November 30, 2000, offers a long-distance look at the cratered terrain south of where the spacecraft will touch down on February 12, 2001. In this view, south is to the top and the landing site itself is just into the shadows, slightly left of center. The length of the asteroid is 33 kilometers (21 miles). Built and managed by The Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland, NEAR was the first spacecraft launched in NASA's Discovery Program of low-cost, small-scale planetary missions. See the NEAR web page at http://near.jhuapl.edu for more details. |
| Date |
02.07.2001 |
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Two Very Different Asteroids
| Title |
Two Very Different Asteroids |
| Description |
The NEAR Shoemaker spacecraft has scored two important firsts in the exploration of asteroids: it's the first to orbit an asteroid, Eros, and the first to encounter a denizen of the outer reaches of the asteroid belt, the C-type asteroid Mathilde. In a scheme that reflects how they have historically been a topic for astronomy, not geology, asteroids are classified into groups based on their colors as observed through telescopes. The two major classes of asteroids are called S-types and C-types. S-types, whose colors are consistent with "stony" or rocky compositions, prevail among asteroids that orbit closer to the Sun than the mid-point of the asteroid belt. Eros and the two asteroids encountered briefly by the Galileo spacecraft on its way to Jupiter -- Gaspra and Ida -- are all S-types. C-types like Mathilde have a dark gray color consistent with a "carbonaceous" composition, rich in carbon compounds and other dark materials. They prevail in the outer part of the asteroid belt. In this montage, Mathilde (at left) and Eros (at right) are shown at the same scale, as they were imaged by NEAR Shoemaker from about 1,800 kilometers (1,116 miles) on June 27, 1997, and February 12, 2000, respectively. Mathilde is 56 kilometers (35 miles) across, and Eros is 33 kilometers (21 miles) long and 13 kilometers (8 miles) wide. However, Mathilde's brightness is greatly exaggerated for viewing purposes -- it's actually six times darker than Eros, with about the same reflectivity as soot! Built and managed by The Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland, NEAR was the first spacecraft launched in NASA's Discovery Program of low-cost, small-scale planetary missions. See the NEAR web page at http://near.jhuapl.edu for more details. |
| Date |
03.30.2000 |
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Landmarks at NEAR Shoemaker'
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| Title |
Landmarks at NEAR Shoemaker's Touchdown Site |
| Description |
This map projection of NEAR Shoemaker images shows locations and sizes of landmarks surrounding the spacecraft's planned landing site. Diameters of craters are shown in red, and diameters of boulders are shown in yellow. Diameters are given in units of meters (1 meter is about 3.3 feet). Coordinates along the left side of the map are degrees south latitude and coordinates along the bottom are degrees west longitude. The six yellow "footprint" boxes represent approximate image size at 500,1,000, 1,500, 2,000, 2,500 and 3,000 meters above the surface during descent. The spacecraft will take pictures continuously between each spot. The arrow marks the estimated touchdown site. Mosaic made from images taken January 25, 2001, from an altitude of about 25 kilometers (16 miles). Built and managed by The Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland, NEAR was the first spacecraft launched in NASA's Discovery Program of low-cost, small-scale planetary missions. See the NEAR web page at http://near.jhuapl.edu for more details. |
| Date |
02.12.2001 |
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