PIA17578: Boundary Lands

Boundary Lands


This image shows an area of the southwestern rim of the Caloris impact basin. The small hills in the lower left are part of the rim units, and the smooth surface to the right is part of the smooth plains within the basin. The scene lies right on a color boundary between darker rim material and higher-reflectance plains. Small hollows are found on the top of the hills, and small lobate scarps cross the area. The famous kidney-shaped pyroclastic vent is just to the east (right), out of the scene.

This image was acquired as a high-resolution targeted observation. Targeted observations are images of a small area on Mercury's surface at resolutions much higher than the 200-meter/pixel morphology base map. It is not possible to cover all of Mercury's surface at this high resolution, but typically several areas of high scientific interest are imaged in this mode each week.

Date acquired: July 03, 2013
Image Mission Elapsed Time (MET): 15137794
Image ID: 4370103
Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS)
Center Latitude: 22.04°
Center Longitude: 143.6° E
Resolution: 42 meters/pixel
Scale: The scene is about 57 km (35 mi.) across
Incidence Angle: 68.7°
Emission Angle: 31.8°
Phase Angle: 100.1°
North is up in this image.

Background Info:

The MESSENGER spacecraft is the first ever to orbit the planet Mercury, and the spacecraft's seven scientific instruments and radio science investigation are unraveling the history and evolution of the Solar System's innermost planet. MESSENGER acquired over 150,000 images and extensive other data sets. MESSENGER is capable of continuing orbital operations until early 2015.

For information regarding the use of images, see the MESSENGER image use policy .

Cataloging Keywords:

Name Value Additional Values
Target Mercury
Target Type Planet
Instrument Host MESSENGER
Host Type Orbiter
Instrument Mercury Dual Imaging System (MDIS)
Detector Narrow Angle Camera (NAC)
Extra Keywords Grayscale, Impact, Map, Radio
Acquisition Date
Release Date 2013-10-25
Date in Caption 2013-07-03
Image Credit NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington
Source photojournal.jpl.nasa.gov/catalog/PIA17578
Identifier PIA17578