im doing a project at school and need to know. thx
2007-02-08 09:28:04 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
oh and tell me what they are used for. pls an thx
2007-02-08 09:32:00 · update #1
You can use rockets to move asteroids into different orbits!
Orbital elements for asteroid 2001-YB5.
a = 2.349557177836 au
e = 0.862427471513
i = 5.490700413641 deg
L = 109.3451209415 deg
w = 114.2474452629 deg
T = JD 2453637.57768
The delta-vee is...
time = JD 2458238.25 (18h UT, 29 April 2018)
speed = 83.659 m / sec
right ascension = 15h 24m 20.79s
declination = +5.4816652 degrees
Without that delta-vee, the asteroid would miss Earth by about 8.5 million kilometers (closest approach on 9 Jan 2020). But WITH that delta-vee, it will smack into Earth on 6 January 2020, with an impact energy of 5000 megatons. Boom, y'all.
The transfer orbit, which 2001-YB5 would shift into, if that delta-vee is applied at the correct time, is
a = 2.34927904922 au
e = 0.86261448066
i = 5.61408792487 deg
L = 106.665251678 deg
w = 116.777537558 deg
T = JD 2457580.637076
So let's just keep this a secret between us. Don't anybody tell the Space Terrorists about it, okay?
2007-02-08 11:54:16 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Nowadays there are probes that have taken photo from very short distances and even have landed on asteroids (Eros)
http://www.spaceflightnow.com/near/010212nearlands/
At the beginning of the twenty century the way to discover asteroids was to take with telescopes photos of the night sky during several hours, and look for traces. All fixed points were stars, the traces on the photos were planets or asteroids, because they move slightly during that time lapse.
2007-02-08 17:35:47 · answer #2 · answered by Jano 5 · 0⤊ 0⤋
A friend of mine tries to discover new ones - he uses a telescope, a camera and a computer. He takes pictures of the night sky and looks for things that have moved since he took the previous picture. If he finds something unexpected he checks it against a database of known asteroids to see if it's really a new discovery.
2007-02-08 18:11:16 · answer #3 · answered by Iridflare 7 · 0⤊ 0⤋
Radio Telescope.
2007-02-08 17:30:33 · answer #4 · answered by Eric W 2 · 1⤊ 0⤋
use the L and R arrow keys to rotate, the up arrow to accelerate and the space bar to shoot, duh
2007-02-08 17:32:31 · answer #5 · answered by cyclist_46 2 · 1⤊ 1⤋