Jicamarca overflights and orbital elements

October 1 - November 30 2008

Click on the graph for a larger image.

How to read this graph: The x-axes of both graphs are the day of year. Lining up each date in the left graph shows three or four asterisks located at the magnetic local time (MLT) of Jicamarca at the time of the overflight of C/NOFS. With each passing day C/NOFS overflies Jicamarca at slightly earlier times. Since we are also interested in the altitude of the satellite during these overflights, the right graph plots those same passes showing the altitude (at the closest point to Jicamarca) for that pass.

Click on the graph for a larger image.

How to read this graph: As above, the x-axes of all four graphs show the day of year. The top left graph shows the magnetic local time (MLT) of the perigee as a function of time. Obviously the perigee is precessing towards later times (i.e. - moving eastward) over time. The upper right graph shows the geographic latitude of the position of the perigee as it oscillates between + 13 and - 13 degrees over the course of time. The bottom left graph shows the MLT of the ascending (northbound) node of the orbit. Obviously the node is moving towards earlier times (i.e. - moving westward) over time. The lower right graph shows the altitude of the satellite as it passes the ascending node over time.

Click here for the table of predicted overflights of Jicarmarca for October-November 2008. The table lists the overflights by day, time of day (in seconds UT), maximum elevation of C/NOFS seen from Jicamarca, the MLT of Jicamarca at the time of the overflight, and the altitude of C/NOFS at the time of maximum elevation.

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