## What is the orbital period of Planet Nine?

## What is the orbital period of Planet Nine?

Table of Contents

Planet Nine

Orbital characteristics | |
---|---|

Orbital period (sidereal) | 9,900 +5,500 −3,100 yr |

Inclination | 16±5° |

Argument of perihelion | 150° (est.) |

Physical characteristics |

## What is the formula for the orbital period?

By observing the time between transits, we know the orbital period. Kepler’s Third law can be used to determine the orbital radius of the planet if the mass of the orbiting star is known (R3=T2−Mstar/Msun, the radius is in AU and the period is in earth years).

**What is the orbit of Planet 9?**

They estimate Planet Nine to be about 6.2 Earth masses, with an orbit that takes it from 300 astronomical units (AU, with 1 AU being the distance from Earth to the sun) out to 380 AU from the sun. Planet Nine’s orbital inclination, or how much it tilts away from the plane of the solar system, is around 16 degrees.

### How do you calculate orbital period in years?

If the size of the orbit (a) is expressed in astronomical units (1 AU equals the average distance between the Earth and Sun) and the period (P) is measured in years, then Kepler’s Third Law says P2 = a3.

### How long does Planet 9 take to orbit the Sun?

between 10,000 and 20,000 Earth years

The object, which the researchers have nicknamed “Planet Nine,” could have a mass about 10 times that of Earth and orbit about 20 times farther from the Sun on average than Neptune. It may take between 10,000 and 20,000 Earth years to make one full orbit around the Sun.

**How do you calculate the orbit of a planet?**

The orbit formula, r = (h2/μ)/(1 + e cos θ), gives the position of body m2 in its orbit around m1 as a function of the true anomaly.

## How do you calculate the orbital period of Jupiter?

Jupiter’s orbital period is 11.86 years. Thus, Jupiter’s period divided by Ceres’ period is PJupiter/PCeres = 11.86/4.61 = 2.57. If Ceres were near a “resonance,” this ratio would be equal to a small integer (2, 3, 4) or a ratio of small integers (5/2 = 2.5, 4/3 = 1.33, 3/2 = 1.5).

## What is the orbital period in years of a planet with a semimajor axis of 10 AU?

1.7 years

c) mars. d) Jupiter. 14) A planet has a semimajor axis of 10 AU. The orbital period would be a) 1.7 years.

**When was Planet 9 found?**

When will Planet 9 be found? If there’s a giant planet lurking around the outskirts of our Solar System, astronomers will probably find evidence of it in the next 10 to 15 years. The next generation of telescopes, both in orbit and here on Earth, may increase astronomers’ chances of finding Planet Nine.