# Orbit of a satellite Calculator

## Calculates the orbital radius and period, and flight velocity from the orbital altitude.

 Orbital altitude h km  from Earth's surface 6digit10digit14digit18digit22digit26digit30digit34digit38digit42digit46digit50digit Orbital radius r km Flight velocity v km/s Orbital period P (hh:mm:ss)
 $\normal flight\ velocity:\ v=\sqrt{\large\frac{398600.5}{6378.14+h}}\hspace{10} {\small(km/s)}\\orbital\ period:\ P=2\pi{\large\frac{6378.14+h}{v}}\hspace{10} {\small(sec)}\\$
Orbit of a satellite
 [1-10] /59 Disp-Num5103050100200
[1]  2018/07/30 10:18   Male / 60 years old level or over / High-school/ University/ Grad student / Useful /
Purpose of use
Calculating orbital altitudes and velocities for a satellite - for T19V TOS mission.
[2]  2018/07/26 08:51   Male / 20 years old level / High-school/ University/ Grad student / Very /
Purpose of use
Writing tool.
[3]  2018/05/21 08:55   Female / 20 years old level / High-school/ University/ Grad student / A little /
Purpose of use
Find orbital period of a satellite
Comment/Request
Does not take eccentricity into account? Cannot input the apogee and perigee.
from Keisan
This calculator assumes a circular orbit.
[4]  2018/05/12 21:26   Male / 20 years old level / An engineer / Useful /
Purpose of use
curiosity
[5]  2018/05/11 07:55   Female / 20 years old level / High-school/ University/ Grad student / Very /
Purpose of use
Acceptable orbits for artificial suns.
[6]  2018/04/26 00:08   Male / 20 years old level / A homemaker / Very /
Purpose of use
cubesats
[7]  2018/04/25 00:54   Male / Under 20 years old / High-school/ University/ Grad student / A little /
Purpose of use
finding orbital energy
[8]  2018/04/13 00:01   Male / 60 years old level or over / An engineer / Very /
Purpose of use
Explaining orbital characteristics for a satellite at different altitudes and speeds.
Comment/Request
It would be nice to have a clear statement of assumptions for the calculated results. For example, is orbital radius based on a non-elliptical orbit? If an elliptical orbit is assumed, does the radius represent an average? If an elliptical orbit assumed, does the flight velocity represent an average?
[9]  2018/04/05 07:15   Male / Under 20 years old / High-school/ University/ Grad student / Very /
Purpose of use
Looking for precise orbital velocity for geosynchronous orbits.
[10]  2018/04/01 19:11   Male / 50 years old level / An engineer / Very /
Purpose of use
Determined orbit altitude from period

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