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11/02/2017 – Ephemeris – Interstellar asteroid discovered passing through the solar system

November 2, 2017 1 comment

Ephemeris for Thursday, November 2nd. The Sun will rise at 8:21. It’ll be up for 10 hours and 7 minutes, setting at 6:29. The Moon, 2 days before full, will set at 7:21 tomorrow morning.

Apparently an interloper has entered the solar system. No, it’s not Nibiru, unless Nibiru is only 525 feet (160 meters) across. It’s name, for now, is A/2017 U1. It’s official name, when it gets one, will be given to this new class of asteroids.. It’s on a hyperbolic trajectory, meaning it won’t be back. We know there are rogue planets, kicked out of their star systems, so why not asteroids and comets? It had an interstellar space velocity relative to the Sun of 15.8 miles per second (25.5 km/s) coming from the direction of the constellation of Lyra. Interestingly that’s the direction the Sun is traveling toward relative to our neighboring stars at nearly the same speed. Maybe it didn’t so much as to run into us, but the Sun and our solar system ran into it!

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

A/2017 U1

Asteroid A/2017 U1 orbit animation. Click to enlarge. Credit NASA/JPL-Caltech.

This body was discovered because it came close to the Earth.  There are probably many of them passing through the solar system  that never come close enough to be found.

Here’s a link: https://www.nasa.gov/feature/jpl/small-asteroid-or-comet-visits-from-beyond-the-solar-system

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