Looking for some Astronomy Numbers

[Eli]

I need :

1) The speed of Earth's rotation.
2) The speed of Earth's movement around the sun.
3) The speed of the Sun's(and the Solar System's) movement inside the Milky Way.
4) The speed on the Milky Way inside the Local Cluster.
5) The speed of the Local Cluste relative to other clusters.

Umm, please.

[BeBMan]

I have no idea about astronomy, but Google told me that:

http://www-astronomy.mps.ohio-state.edu/~ryden/ast161_4/notes13.html

and

http://itss.raytheon.com/cafe/qadir/q2890.html

[alva]

6. The speed of someone coming up with google link.

[reds4ever]

Originally posted by alva
6. The speed of someone coming up with google link.

The number of people who can't formulate a Google query never ceases to amaze me!

[DAVOUT]

Lots of astronomical numbers can also be found here :

http://www.cbo.gov/showdoc.cfm?index=1821&sequence=0

[reds4ever]

Originally posted by DAVOUT
Lots of astronomical numbers can also be found here :

http://www.cbo.gov/showdoc.cfm?index=1821&sequence=0

...a wiseguy eh?

[Urban Ranger]

Gee, Eli, can you be be lazier?

[Flandrien]

Re: Looking for some Astronomy Numbers

Originally posted by Eli
1) The speed of Earth's rotation.

On the north or south pole :

0 km/h

[Tolls]

A thread just crying out for:

"Just remember that you're standing on a planet that's evolving
And revolving at nine hundred miles an hour,
That's orbiting at nineteen miles a second, so it's reckoned,
A sun that is the source of all our power.
The sun and you and me and all the stars that we can see
Are moving at a million miles a day
In an outer spiral arm, at forty thousand miles an hour,
Of the galaxy we call the 'Milky Way'.

Our galaxy itself contains a hundred billion stars.
It's a hundred thousand light years side to side.
It bulges in the middle, sixteen thousand light years thick,
But out by us, it's just three thousand light years wide.
We're thirty thousand light years from galactic central point.
We go 'round every two hundred million years,
And our galaxy is only one of millions of billions
In this amazing and expanding universe.

The universe itself keeps on expanding and expanding
In all of the directions it can whizz
As fast as it can go, at the speed of light, you know,
Twelve million miles a minute, and that's the fastest speed there is.
So remember, when you're feeling very small and insecure,
How amazingly unlikely is your birth,
And pray that there's intelligent life somewhere up in space,
'Cause there's bugger all down here on Earth."

[Dauphin]

Re: Looking for some Astronomy Numbers

Originally posted by Eli
I need :

1) The speed of Earth's rotation.
2) The speed of Earth's movement around the sun.
3) The speed of the Sun's(and the Solar System's) movement inside the Milky Way.
4) The speed on the Milky Way inside the Local Cluster.
5) The speed of the Local Cluste relative to other clusters.

Umm, please.

From the top of my head.

1) Once every 23hrs 56 minutes.
2) Once every 365.25 days, or ~20 km/s
3) ~200 km/s
4) Errm, 300km/s or so
5) Arrr, about the same as 4) I think.


Its amazing what useless information you pick up doing useless activities at university, like calculating the mean free path of solar systems and galaxies.

Edit - I made a rookie mistake with 1). You need to take off 24hr/365.25 = 4 mins from the 24hr day we experience. Also corrected a typo in 2).

[Eli]

Thanks BB and BC.

[JohnT]

Thanks for the CBO link, DAVEOUT!