HiRISE | Lakebeds in Holden Crater (ESP_011542

NASA/JPL-Caltech/UArizona

Lakebeds in Holden Crater
ESP_011542_1530 Science Theme: Landscape Evolution

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Holden Crater was once filled by at least *two* different lakes. The sediments deposited in those lakes are relatively light-toned where exposed, as we see in this observation.

Each layer represents a different point in time and perhaps a changing environment for Martian life, if it existed. The elongated ridges with sharp crests are sand dunes.

NB: North is to the left in the cutout image.

Written by: Alfred McEwen (13 April 2017)

Acquisition date
11 January 2009

Local Mars time
15:54

Latitude (centered)
-26.714°

Longitude (East)
326.248°

Spacecraft altitude
258.7 km (160.8 miles)

Original image scale range
25.9 cm/pixel (with 1 x 1 binning) so objects ~78 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
3.6°

Phase angle
63.7°

Solar incidence angle
60°, with the Sun about 30° above the horizon

Solar longitude
189.8°, Northern Autumn

For non-map projected images
North azimuth: 97°
Sub-solar azimuth: 16.1°

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ADDITIONAL INFORMATION
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IRB: infrared-red-blue
RGB: red-green-blue
About color products (PDF)

Black & white is 5 km across; enhanced color about 1 km
For scale, use JPEG/JP2 black & white map-projected images

USAGE POLICY
All of the images produced by HiRISE and accessible on this site are within the public domain: there are no restrictions on their usage by anyone in the public, including news or science organizations. We do ask for a credit line where possible:
NASA/JPL-Caltech/UArizona

POSTSCRIPT
NASA’s Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, Calif., manages the Mars Reconnaissance Orbiter for NASA’s Science Mission Directorate, Washington. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona.