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With a good set of binoculars, the giant planet should be the second brightest image in the sky after the moon for several nights, NASA said on its blog.
Stargazers can expect excellent views of Jupiter the entire night of Monday, Sept. 26 when the giant planet reaches opposition, NASA said.
From the viewpoint of Earth’s surface, opposition happens when an astronomical object rises in the east as the Sun sets in the west, placing the object and the Sun on opposite sides of Earth.
Jupiter’s opposition occurs every 13 months, making the planet appear larger and brighter than any other time of the year. But that’s not all. Jupiter will also make its closest approach to Earth since 1963, NASA said.
This happens because Earth and Jupiter do not orbit the Sun in perfect circles – meaning the planets will pass each other at different distances throughout the year.
Jupiter’s closest approach to Earth rarely coincides with opposition, which means this year’s views will be extraordinary, NASA said. At its closest approach, Jupiter will be approximately 367 million miles in distance from Earth, about the same distance it was in 1963. The massive planet is approximately 600 million miles away from Earth at its farthest point.
“With good binoculars, the banding (at least the central band) and three or four of the Galilean satellites (moons) should be visible,” said Adam Kobelski, a research astrophysicist at NASA’s Marshall Space Flight Center in Huntsville, Alabama. “It’s important to remember that Galileo observed these moons with 17th-century optics. One of the key needs will be a stable mount for whatever system you use.”
Kobelski recommends a larger telescope to see Jupiter’s Great Red Spot and bands in more detail; a 4-inch-or-larger telescope and some filters in the green to blue range would enhance the visibility of these features.
According to Kobelski, an ideal viewing location will be at a high elevation in a dark and dry area.
“The views should be great for a few days before and after Sept. 26,” Kobelski said. “So, take advantage of good weather on either side of this date to take in the sight. Outside of the Moon, it should be one of the (if not the) brightest objects in the night sky.”
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