How to See Comet Iwamoto Fly Past Earth This Week

[Judi Lynn]

By Hanneke Weitering 8 hours ago



Comet C/2018 Y1 IwamotoAstrophotographer Gerald Rhemann captured this image of comet C/2018 Y1 Iwamoto on Feb. 9, 2019.(Image: © Gerald Rhemann)


The brilliant, blue-green comet C/2018 Y1 Iwamoto will zip by Earth this week, and the speedy space "snowball" is currently visible in the night sky with binoculars and small telescopes.

Discovered just two months ago by amateur astronomer Masayuki Iwamoto, Comet Iwamoto is an icy body that orbits the sun in a highly elliptical path that takes 1,371 years to complete. After this encounter, the comet won't be back until the year 3390, so check it out while you can!

Comet Iwamoto will make its closest approach to planet Earth at a safe distance of 28 million miles (45 million kilometers) on Feb. 12, around 3:10 p.m. EST (2010 GMT), and it is currently racing through the solar system at a speed of approximately 148,000 mph (238,000 km/h) relative to Earth, according to NASA's Horizons database, which calculates the positions and velocities of orbiting bodies. [Photos: Spectacular Comet Views from Earth and Space]

Comet Iwamoto made its closest approach to the sun — a point in its orbit known as perihelion — on Feb. 7, when it swooped around our star at a distance of 26 million miles (42 million km). You can see Comet Iwamoto's path around the sun in the orbit animation above.

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Comet Iwamoto made its closest approach to the sun — a point in its orbit known as perihelion — on Feb. 7, when it swooped around our star at a distance of 26 million miles (42 million km). You can see Comet Iwamoto's path around the sun in the orbit animation above.

The comet is now visible in the evening sky with binoculars and small telescopes, and the best times to look for it will be on Tuesday and Wednesday nights (Feb. 12 to 13), according to the skywatching site EarthSky.org. After this close approach, comet watchers will need more powerful telescopes to keep an eye on the comet as it fades out of view on its way back out to the farthest reaches of the solar system.