Repeated Shadow Track Orbits for Space-SunSetter Missions

Table 2

The initial and modified orbital elements and their shadow and spacecraft track characteristics.

Orbital parameters and shadow and spacecraft track characteristics	Initial orbit	Modified orbit (RSTO)
Inclination, 𝑖 (deg)	120	116.017
Eccentricity, 𝑒	0.01	0.01
Ascending node, Ω (deg)	120	120
Perigee argument, 𝜔 (deg)	30	30
True anomaly, 𝜗 (deg)	0	0
Semi major axes, 𝑎 (km)	10133.879	9761.798
No. of shadow revolution, 𝑛	9	9
Total change in shadow longitude,
∑^𝑛𝑖=1|Δ𝜑shadow| (deg)	−380.713	−360
Total change in shadow latitude,
∑^𝑛𝑖=1|Δ𝜆shadow| (deg)	1.930×10^−10	2.916×10^−10
Summation of shadow nodal period,
∑^𝑛𝑖=1𝜏sh (sec)	91372.036	86399.985
Total change in spacecraft longitude,
∑^𝑛𝑖=1|Δ𝜑𝑠/𝑐| (deg)	−380.696	−359.984
Total change in spacecraft latitude,
∑^𝑛𝑖=1|Δ𝜆𝑠/𝑐| (deg)	−0.0282	−0.0251