Astronomy / Space For the first time, an object "from elsewhere" passes through the Solar System

Patrick_68000

Patrick_68000
It would come from the constellation of Lyra. Perhaps he was ejected from the Vega system, the fifth brightest star in the sky, 25 light years from us. Its speed of 100 000 km / h is enough to break free from the gravitational pull of our star , and its trajectory is hyperbolic (it does not turn around the sun).

According to astronomers' calculations, it has been 10000 years since the stone traveled in our solar system. It will take him about as much time to leave it.

http://orbitsimulator.com/gravitySimulatorCloud/simulations/1508916436979_C2017U1.html ------------- http://www.minorplanetcenter.net/mpec/K17/K17UI3.html
 

Manticore

Manticore
Patrick_68000 said:
It would come from the constellation of Lyra. Perhaps he was ejected from the Vega system, the fifth brightest star in the sky, 25 light years from us. Its speed of 100 000 km / h is enough to break free from the gravitational pull of our star , and its trajectory is hyperbolic (it does not turn around the sun).

According to astronomers' calculations, it has been 10000 years since the stone traveled in our solar system. It will take him about as much time to leave it.

http://orbitsimulator.com/gravitySimulatorCloud/simulations/1508916436979_C2017U1.html ------------- http://www.minorplanetcenter.net/mpec/K17/K17UI3.html
Click to expand...

Only twenty five light years? They need to engineer...........
 

Para Handy

Para Handy
'Oumuamua - "a messenger from afar arriving first" in Hawaiian

Object classified as 1I/2017 U1 and now called 'Oumuamua:

http://www.bbc.co.uk/news/science-environment-42019778

"The first known asteroid to visit our Solar System from interstellar space has been given a name.
Scientists who have studied its speed and trajectory believe it originated in a planetary system around another star.
The interstellar interloper will now be referred to as 'Oumuamua, which means "a messenger from afar arriving first" in Hawaiian.
The name reflects the object's discovery by a Hawaii-based astronomer using an observatory on Maui."

"The object has also been given the more formal designation of 1I/2017 U1 by the International Astronomical Union (IAU), which is responsible for naming celestial bodies.

The "I" in this formal name stands for "interstellar" object, similar to the "C" and "A" in the designations for comets and asteroids, respectively.
'Oumuamua is the first object to carry the "I" in front of its name."

:)

(text is quoted from the BBC report)
 

Morbad

Morbad
Patrick_68000 said:
It does not seem to have decelerated for 10000 years

:)
Click to expand...

According to your own orbit simulator link, it's been decelerating rapidly since it started moving away from the sun in early September!

Archduke said:
Since this object is coming from interstellar region closer to the solar system, then obviously it is accelerated by gravity.
Click to expand...

Yes. Positive acceleration on the way in, which peaked on September 9th, when it reached it's closest approach, and negative acceleration from then on.
 

Patrick_68000

Patrick_68000
Morbad said:
According to your own orbit simulator link, it's been decelerating rapidly since it started moving away from the sun in early September!
Click to expand...

It does not seem to have decelerated for 10000 years. It was the press article which said it, not me. And it added that this object would take more or less the same time to leave the solar system. I think on the scale of time of 10 000 years, the downward and upward variations are not really important. Eventually there must be a balance to calculate 10000 years

:)
 
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