PIA15860: Is this Crater Circular?

Is this Crater Circular?


This crater is to the northeast of Ahmad Baba. The high resolution image allows smaller craters inside the main crater to be visible. This image is not map projected so the circular shape of the crater is obscured. By not map projecting this image, the topography of the crater and surrounding area is easier to see.

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: April 12, 2012
Image Mission Elapsed Time (MET): 242756503
Image ID: 1640078
Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS)
Center Latitude: 59.30°
Center Longitude: 234.6° E
Resolution: 18 meters/pixel
Scale: This crater's diameter is approximately 14 km (9 miles).
Incidence Angle: 68.2°
Emission Angle: 47.4°
Phase Angle: 115.6°

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. Visit the Why Mercury? section of this website to learn more about the key science questions that the MESSENGER mission is addressing. During the one-year primary mission, MDIS acquired 88,746 images and extensive other data sets. MESSENGER is now in a year-long extended mission, during which plans call for the acquisition of more than 80,000 additional images to support MESSENGER's science goals.

These images are from MESSENGER, a NASA Discovery mission to conduct the first orbital study of the innermost planet, Mercury. 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 Crater, Grayscale, Map, Radio
Acquisition Date
Release Date 2012-06-13
Date in Caption 2012-04-12
Image Credit NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington
Source photojournal.jpl.nasa.gov/catalog/PIA15860
Identifier PIA15860