This tool is meant to assist mission planners and guest observers in determining the best time to observe targets. It reads an ephemeris file and creates output listing the predicted observing efficiency and sun angle.

The RXTE SOF does not guarantee that objects will always be scheduled during the week of peak efficiency, due to Targets of Opportunity and coordinated observations.

The Auto option for the Ephemeris file allows the program to automatically find the best suited file

The maximum number of months is 18

Please select an Ephemeris file: Autoxte_09124.81952778.tlexte_09114.17066844.tlexte_09104.43632341.tlexte_09093.65662922.tlexte_09083.59543689.tlexte_09073.86080545.tlexte_09064.12612524.tlexte_09053.54195614.tlexte_09046.74713574.tlexte_09036.94689532.tlexte_09027.08119418.tlexte_09017.41140001.tlexte_08259.19940878.tlexte_08249.13634053.tlexte_08240.57611191.tlexte_08227.83378144.tlexte_08217.11701352.tlexte_08207.31504855.tlexte_08196.59822030.tlexte_08186.79613163.tlexte_08176.92867437.tlexte_08173.85734481.tlexte_08165.10073156.tlexte_08154.51427070.tlexte_08145.75755800.tlexte_08134.97491530.tlexte_08133.92931685.tlexte_08124.32282807.tlexte_08114.19348717.tlexte_08104.65214959.tlexte_08092.88869848.tlexte_08091.84305143.tlexte_08080.92897782.tlexte_08071.32177839.tlexte_08061.45306429.tlexte_08050.86530755.tlexte_08040.86559823.tlexte_08030.34294477.tlexte_08020.53912096.tlexte_08011.58485198.tlexte_07365.86578445.tlexte_07358.87217646.tlexte_07355.21194124.tlexte_07345.47300921.tlexte_07334.62281984.tlexte_07326.71384544.tlexte_07317.88967282.tlexte_07306.32012213.tlexte_07297.49576745.tlexte_07287.49469094.tlexte_07276.97061216.tlexte_07267.03467514.tlexte_07258.40599028.tlexte_07247.62009578.tlexte_07237.87996982.tlexte_07227.81289088.tlexte_07219.11857382.tlexte_07213.43126842.tlexte_07204.34457128.tlexte_07193.68892223.tlexte_07184.86359677.tlexte_07175.12292890.tlexte_07135.96339179.tlexte_07125.37233721.tlexte_07116.41557751.tlexte_07105.82426572.tlexte_07094.84049822.tlexte_07085.29489951.tlexte_07076.53376440.tlexte_07067.44559803.tlexte_07061.75723097.tlexte_07051.03423487.tlexte_07042.14188709.tlexte_07032.33395660.tlexte_07021.54510918.tlexte_07011.93307843.tlexte_07001.92852655.tlexte_06359.34328532.tlexte_06349.33849112.tlexte_06339.52958238.tlexte_06334.82124237.tlexte_06324.94669701.tlexte_06314.35254720.tlexte_06305.58926015.tlexte_06296.49886182.tlexte_06291.85549559.tlexte_06283.02643815.tlexte_06273.41245002.tlexte_06265.23719243.tlexte_06213.43624793.tlexte_06191.06662199.tlexte_06055.19703644.tlexte_05080.51180762.tlexte_04029.14724749.tlexte_03302.96412279.tlexte_.tle

Starting Date: (format is YYYY/MM/DD)

RA: (J2000, decimal deg)

Dec: (J2000, decimal deg)

Number of months after starting date to report: (default = 12)

Resolution: (w=Weekly(Default), d=Daily, o=Orbital)

Due to the nature of this utility, the program will not display results until it has finished running. This program will take between 60 and 600 seconds. It will run faster if you select fewer months to report.

This page is maintained by the RXTE SOF and was last modified on .

Responsible NASA Official: Phil Newman
Web Curator: Robin Corbet