PIA07273: Mars at Ls 145: Acidalia/Mare Erythraeum
 Target Name:  Mars
 Is a satellite of:  Sol (our sun)
 Mission:  Mars Global Surveyor (MGS)
 Spacecraft:  Mars Global Surveyor Orbiter
 Instrument:  Mars Orbiter Camera (MOC)
 Product Size:  640 x 640 pixels (w x h)
 Produced By:  Malin Space Science Systems
 Producer ID:  MOC2-968
 Full-Res TIFF:  PIA07273.tif (1.232 MB)
 Full-Res JPEG:  PIA07273.jpg (208.2 kB)

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Original Caption Released with Image:

11 January 2004
This picture is a composite of Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) daily global images acquired at Ls 145 during a previous Mars year. This month, Mars looks similar, as Ls 145 occurs in mid-January 2005.

This picture shows the Acidalia/Mare Erythraeum face of Mars. Over the course of the month, additional faces of Mars as it appears at this time of year are being posted for MOC Picture of the Day.

Ls, solar longitude, is a measure of the time of year on Mars. Mars travels 360 around the Sun in 1 Mars year. The year begins at Ls 0--the start of northern spring and southern summer. In January 2005, it is northern summer and southern winter. The seasons on Mars occur according to Ls, described in thefollowing table:

Ls
Season
0° - 90°
northern spring, southern autumn
90° - 180°
northern summer, southern winter
180° - 270°
northern autumn, southern spring
270° - 360°
northern winter, southern summer

Image Credit:
NASA/JPL/Malin Space Science Systems

Image Addition Date:
2005-01-11