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|| λ degrees || acceleration || λ change || ΔV per year || Δλ || || λ degrees || acceleration || λ change || ΔV per year || Δλ || λ degrees || acceleration || λ change || ΔV per year || Δλ ||

Soop

Handbook of Geostationary Orbits

E. M. Soop, 1983

East-west acceleration, extrapolated from table 2, pp 287

λ degrees

acceleration

λ change

ΔV per year

Δλ

λ degrees

acceleration

λ change

ΔV per year

Δλ

Longitude

× 1e-9 m/s²

0.001°/day²

m/s/y

°/year²

0 W

21.3 W

0.65 W

0.67 W

87 W

15 W

6.3 E

0.19 E

0.20 E

25 W

30 W

29.6 E

0.90 E

0.97 E

120 E

45 W

43.5 E

1.33 E

1.38 E

177 E

60 W

46.5 E

1.42 E

1.47 E

189 E

75 W

38.7 E

1.18 E

1.22 E

157 E

90 W

22.3 E

0.68 E

0.71 E

91 E

105 W

0.3 E

0.01 E

0.01 E

1 E

120 W

23.3 W

0.71 W

0.73 W

95 W

135 W

43.0 W

1.31 W

1.36 W

175 W

150 W

54.4 W

1.63 W

1.69 W

217 W

165 W

50.8 W

1.55 W

1.60 W

207 W

180 W

34.2 W

1.04 W

1.08 W

139 W

165 E

6.6 W

0.02 W

0.21 W

3 W

165 E

6.6 W

0.02 W

0.21 W

3 W

150 E

25.3 E

0.77 E

0.80 E

103 E

135 E

52.3 E

1.59 E

1.65 E

212 E

120 E

65.3 E

1.99 E

2.06 E

265 E

105 E

58.9 E

1.79 E

1.86 E

239 E

90 E

34.5 E

1.05 E

1.09 E

140 E

75 E

0.0 W

0.0 W

0.0 W

0.0 W

60 E

33.0 W

1.01 W

1.04 W

135 W

45 E

54.3 W

1.65 W

1.71 W

220 W

30 E

58.3 W

1.77 W

1.84 W

236 W

15 E

45.5 W

1.38 W

1.44 W

184 W

NOTE: large Δλ isn't "real", but implies a large oscillation and reversal. The oscillation is not sinusoidal, because the "restoring force" isn't linear with distance from "center"

The above table is for east/west oscillations due to the Earth's sideways bulges, in the absence of tidal forces from the Moon and the Sun. There will also be large accelerations east/west and north/south from lunar and solar tides. As a wild guess, whatever vertical effect that tides have on the ocean will be magnified some power of the GEO radius in earth radius units (6.61)

Soop (last edited 2021-09-20 13:03:34 by KeithLofstrom)