I How far out are the probes that were sent out

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1. Apr 27, 2017

Zahid Hasan

I haven't seen any posts about it but I am curious to know how far are the probes from Earth...
• Voyager 1
• Voyager 2
• Pioneer 10
• Pioneer 11
Do they have any chance of colliding with an object?

2. Apr 27, 2017

Staff: Mentor

https://voyager.jpl.nasa.gov/where/
https://de.wikipedia.org/wiki/Pioneer_10#/media/File:72408main_ACD97-0036-1.jpg
https://www.nasa.gov/mission_pages/voyager/multimedia/pia14112.html
https://space.stackexchange.com/que...-find-and-track-pioneer-10-11-and-voyager-1-2
https://smd-prod.s3.amazonaws.com/science-red/s3fs-public/atoms/files/bubble_big.gif

This depends on what you mean by an object. I assume they collide with particles quite often. Technically they are in the Kuiper belt, but to collide with the debris there, the chances are low, as it is too wide spread and far distributed. As far as I saw it on a first glimpse, the Pioneers can't be detected anymore, due to the low intensity of their signal, if not zero. So we won't know, even if they should "collide" with something.

3. Apr 27, 2017

Zahid Hasan

Those are some good links. Searching on Google only displays result which was posted back in 2013 or so and not helpful for current. Thanks for the links.

I am thinking maybe an floating asteroid or a large body?

4. Apr 27, 2017

Staff: Mentor

I haven't done it, but compute the volume between two balls, the inner with a diameter of 100 AU and the outer with 200 AU. (That's the volume of the area where the Voyagers currently are. The Pioneers should also be there, although "lost".) Then compare it to the volume of estimated 70,000 objects of a diameter greater than 100 km. (Estimation of objects in the Kuiper belt in a distance below 80 AU. The voyagers are further away, so there are probably even less objects. The Oort cloud ranges roughly until 100,000 AU.) Do it very conservatively and take 10,000,000 objects of say a diameter of 1,000 km. The ratio of these volumes gives you an upper bound on the density of masses in the Kuiper belt (or beyond, depending on where you define the "end" of the Kuiper belt) and thus a rough impression of the odds to "collide".

5. Apr 27, 2017

Zahid Hasan

It is most likely not possible, however it would be really nice to receive video feed as it travels the unknown... a video would really stands out more than just pictures.

I wonder though, if any of the probes sent back video feed.

6. Apr 27, 2017

Staff: Mentor

An extra 3 or 4 years doesn't change much for a probe launched 40 years ago.

7. Apr 27, 2017

Zahid Hasan

True but it's always good to get fresh data... i wished they set aside little time/page to give us updates.

8. Apr 27, 2017

Staff: Mentor

The Voyager link I gave you has the actual data of both probes: per second.
Since the energy supplies of the Pioneers are too low, there is no feedback from them and thus all position announcements are speculative. And what difference would it make, whether they are 120 AU or 250 AU away from us?

9. Apr 27, 2017

Zahid Hasan

When I say data, i mean it as news source not just numbers but I presume you are correct.... and I am sure 120 AU and 250 AU, a lot of things can happen but what do I know.

10. Apr 27, 2017

Staff: Mentor

The point is: without a signal we can't know.
And why is

V1: 20,604,325,047 KM (counting)
V2: 17,047,670,769 KM (counting)
https://voyager.jpl.nasa.gov/where/

not accurate enough for you?

11. Apr 27, 2017

rootone

While the Voyagers are still returning data, their transmission rate is very low, though still useful.
A video data stream would require an enormously greater bandwidth, which most of the time would not be sending anything interesting.

12. Apr 27, 2017

Zahid Hasan

Definitely accurate enough :)

13. Apr 27, 2017

tony873004

Last edited: Apr 27, 2017
14. Apr 28, 2017

davenn

no, just individual images built up line by line similar to a fax transmission/reception

15. Apr 28, 2017

Zahid Hasan

16. Apr 28, 2017

Staff: Mentor

Click the check box on the left labeled "Labels"!

17. Apr 28, 2017

OmCheeto

Last edited: Apr 28, 2017
18. Apr 28, 2017

tony873004

Or Press "L" on your keyboard.

I don't think you timed it right on my simulator.
Try this.
1. Open the simulation.
2. Press Pause [||] on the Time Step interface or press "P" on your keyboard.
3. Click the Autopilot Menu. Choose "Single Events" and paste the following code and press "Update":
Code (Text):

4/28/2016 {{pause()}}
4/28/2017 {{pause()}}

4. Unpause [>] or 'P'.
5. The simulator will automatically pause on 4/28/2016. Record the values.
6. Unpause [>] or 'P'.
7. The simulator will automatically pause on 4/28/2017. Record the values. Subtract.

The numbers I get doing this are closer to the ones in your OmCheeto column than in your tony873004 column.

Last edited: Apr 28, 2017
19. Apr 28, 2017

OmCheeto

Nope. Timing was near perfect. I shifted my data entry rows for some reason.

As I said, I should be in jail.

Previous post edited.

20. May 2, 2017

Zahid Hasan

So New Horizon will go further than Pioneer 10/11 in the same time length? Is it because of the faster launch time?