What if…

1. The obliquity of Earth was not 23.5° but 75°?

2. The eccentricity of the Earth’s orbit was not 0.016 but 0.6?

3. Perihelion did not occur in early January but in March?  (apse angle = 90°)

Of all the planets in our solar system, six of these (including Earth and Pluto) exhibit the right orbital characteristics for the sun to form an analemma curve throughout the planet's solar year. The two exceptions to this are Mercury and Venus. The length of day on these two planets almost matches the revolution time around the sun, thus the motion of the sun from one day to the next is not a smooth analemma curve. In fact, the length of the day on Venus is slightly longer than its' solar year


Length of year:  686.98 days

Length of solar day:  24.66 hours

Eccentricity:  0.093

Obliquity:  25.19º


Length of year:  11.86 years

Length of solar day:  9.929 hours

Eccentricity:  .0485

Obliquity = 3.13º


Length of year:  29.42 years.

Length of solar day:  10.656 hours.

Eccentricity:  .056

Obliquity:  26.73º


Length of year:  83.747 years

Length of solar day:  17.2395 hours

Eccentricity:  .0463

Tilt:  97.86º


Length of year:  163.72 years

Length of solar day:  16.11 hours

Eccentricity :  .00859

Tilt:  29.56º


Length of year = 248 years.

Length of solar day = 153 hours.

Eccentricity = .2488.

Tilt = 122.46 degrees.