|
Collection:
|
|
NASA Planetary Photo Journal Collection
Collection
NASA Planetary Photo Journal Collection
Collection
|
|
Title:
|
|
Abundance of Very Large Impact Craters on Mathilde
Title
Abundance of Very Large Impact Craters on Mathilde
Title
|
|
Original Caption Released with Image:
|
This view of 253 Mathilde, taken from a distance of about 1,200 km (748 miles), was acquired shortly after the NEAR spacecraft's closest approach to the asteroid. In this image, the asteroid has been rotated so that the illumination appears to come from the upper left. This portion of Mathilde shows numerous impact craters, ranging from over 30 km to less than 0.5 km (18.. 0.3 miles) in diameter. Raised crater rims suggest that some of the material ejected from these craters traveled only short distances before falling back to the surface; straight sections of some crater rims indicate the influence of large faults or fractures on crater formation. The number of craters as a function of size, and the number of each size within the visible area, are similar to values seen on asteroid 243 Ida, viewed by the Galileo spacecraft in 1993. A major difference between Ida and Mathilde appears to be the abundance of very large craters: Mathilde has at least 5 craters larger than 20 km in diameter on the roughly 60% of the body viewed during the encounter. 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.…for more details.
Original_Caption_Rel eased_with_Image
This view of 253 Mathilde, taken from a distance of about 1,200 km (748 miles), was acquired shortly after the NEAR spacecraft's closest approach to the asteroid. In this image, the asteroid has been rotated so that the illumination appears to come from the upper left. This portion of Mathilde shows numerous impact craters, ranging from over 30 km to less than 0.5 km (18.. 0.3 miles) in diameter. Raised crater rims suggest that some of the material ejected from these craters traveled only short distances before falling back to the surface; straight sections of some crater rims indicate the influence of large faults or fractures on crater formation. The number of craters as a function of size, and the number of each size within the visible area, are similar to values seen on asteroid 243 Ida, viewed by the Galileo spacecraft in 1993. A major difference between Ida and Mathilde appears to be the abundance of very large craters: Mathilde has at least 5 craters larger than 20 km in diameter on the roughly 60% of the body viewed during the encounter. 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.…for more details. Original Caption Released with Image
|
|
Addition Date:
|
|
2000-05-07
Addition_Date
2000-05-07
Addition Date
|
|
Produced By:
|
|
Johns Hopkins University/APL
Produced_By
Johns Hopkins University/APL
Produced By
|
|
Mission:
|
|
NEAR
|
|
Spacecraft:
|
|
NEAR Shoemaker
Spacecraft
NEAR Shoemaker
Spacecraft
|
|
Target Name:
|
|
Mathilde
Target_Name
Mathilde
Target Name
|
|
Is a satellite of:
|
|
Sol (our sun)
Is_a_satellite_of
Sol (our sun)
Is a satellite of
|
|
Instrument:
|
|
Multi-Spectral Imager
Instrument
Multi-Spectral Imager
Instrument
|
|
Product Size:
|
|
640 samples x 398 lines
Product_Size
640 samples x 398 lines
Product Size
|
|
Primary Data Set:
|
|
NEAR Home Page
Primary_Data_Set
NEAR Home Page
Primary Data Set
|
|
facet_what:
|
|
Sun
facet_what
Sun
facet_what
|
|
facet_what:
|
|
Crater
facet_what
Crater
facet_what
|
|
facet_what:
|
|
Galileo
facet_what
Galileo
facet_what
|
|
facet_what:
|
|
Imager
facet_what
Imager
facet_what
|
|
facet_what:
|
|
NEAR Shoemaker
facet_what
NEAR Shoemaker
facet_what
|
|
facet_what:
|
|
Multi-Spectral Imager
facet_what
Multi-Spectral Imager
facet_what
|
|
facet_where:
|
|
Maryland
facet_where
Maryland
facet_where
|
|
facet_where:
|
|
Jet Propulsion Laboratory (JPL)
facet_where
Jet Propulsion Laboratory (JPL)
facet_where
|
|
facet_when:
|
|
1993
facet_when
1993
facet_when
|
|
facet_when_year:
|
|
1993
facet_when_year
1993
facet_when_year
|
|
Image #:
|
|
PIA02478
|
|
UID:
|
|
SPD-PHOTJ-PIA02478
UID
SPD-PHOTJ-PIA02478
UID
|
|
orignial url:
|
orignial_url
orignial url
|
