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Neptune Satellite Dances to Avoid Clashes "Up, Up, Down, Down"



Unusual unique orbital reference even in the suburbs of many solar systems

Neptune and the surrounding niches and moons of Thalassa

Neptune and the surrounding niches and moons of Thalassa The satellite orbiting inwards is a nyad (red solid line). [NASA/JPL-Caltech 제공]

(Seoul = Yonhap News) Journalist Mind Nam-Sec = Two small satellites orbiting Neptune are identified as having a single orbit as if they were dancing a zigzag so they would not bump into each other.

According to NASA's JPL Jet Propulsion Laboratory, discovered by Voyager 2 in 1989, they are about 1850 km orbiting Neptune. Not located outside, but not approaching each other within 3,540 km.

This is because each other's point of passage is perfectly suited to the tilt of the nymph orbiting Neptune from within.

Niyad's rest period is seven hours and Thalassa is seven hours and thirty minutes. Suppose you set up a nonstop satellite in Thalassa, which goes twice, up and down twice.

Orbital dynamics experts call the two satellites moving up and down, up and down as a dance of avoidance and may look strange but maintain a stable orbit.

"We call this recurrent pattern a 'resonance'," said Marina Brozovic of the JPL, who confirmed this through the Hubble Space Telescope and published a paper in the latest issue of the journal Icarus. "There are many different ways to 'dance' with satellites, satellites and asteroids.

Outside the solar system, far from the sun, only large planets have gravity and dozens of moons. These satellites are often created with planets attached to them, or sometimes traversed by gravity to orbit the planet.

Some of these have unusual orbits, such as rotating in the opposite direction of the planet, or rotating orbits with Janus, whose orbit is similar to that of Saturn's Epimetheus satellite.

Neptune has been identified as 14 satellites, the farthest to Neso, orbiting elliptical orbits up to 74 million kilometers.

Neptune's and Nea's internal satellites are believed to be made of material left over from the original satellite system disrupted when Neptune grabbed Triton, the celestial body of the Kuiper Belt, to make it the largest satellite.

Brozovic estimates that Ned formed an unusual resonant connection with Talasa after its initial inclination of orbit with another internal satellite.

"Our interest has always been to find this interdependence between satellites," says planetary astronomer Mark Fowler at the Institute for Alien Life Research (SETI). They seem to be tied to this relationship. " "The two satellites maintain peace by never coming close," he added.

eomns@yna.co.kr

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2019/11/15 10:19 Songgo


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