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General >> Discussion >> New Horizons on schedule !
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Message started by frankuitaalst on 04/30/09 at 09:17:00

Title: New Horizons on schedule !
Post by frankuitaalst on 04/30/09 at 09:17:00

http://pluto.jhuapl.edu/mission/mission_timeline.php gives the timeline of the New Horizons probe currently on its way to Pluto .
In annex the amazing , but not spectacular , animation of NH voyage trough the solar system from the viewpoint of Pluto , looking down at the sun.
NH is the white dot in the beginning leaving the planet Earth ( white orbit ) , which gets a gravity assist from Jupiter ( the red dot originally at the left ) .
One can see NH approach Pluto . For an observer on Pluto there's amazingly no indication the probe is heading towards Pluto until the end of the animation where NH makes a dive under Pluto .

Initial conditions were taken from the JPL ephemeris on 01/01/2009 , ie after the gravity assist with Jupiter .  
I think the people of JPL made an incredibly  good precision job because I get a close encounter with Pluto at 14/07/2009 , precise on time at a distance of only 80.000 km , whereas the flight shedule predicts an approach on the same date at 10.000 km .
So only a small upwards burn may be needed to be right on schedule .

Animation can be downloaded to view on full screen .

Title: New Horizons on schedule !
Post by frankuitaalst on 05/02/09 at 05:59:06

Correction to the above post ...
Something must be awfully wrong with the New Horizons Probe !  :'(
Herunder is an animation of the path of NH as seen from Earth , pointing at Pluto and Charon .
Animation starts on January first 2009 and runs for 8 years.
Viewangle is 30°.

Title: Earth "wobble"
Post by kheider on 05/02/09 at 08:42:47


frankuitaalst wrote:
Something must be awfully wrong with the New Horizons Probe !  :'(
Herunder is an animation of the path of NH as seen from Earth , pointing at Pluto and Charon .
Animation starts on January first 2009 and runs for 8 years.
Viewangle is 30°.

Assuming that Pluto is a fixed point in your animation, it Looks perfect to me. ;)  You are seeing the non-fixed Earth cause a "wobble" every year as it orbits the Sun.  Have you tried the animation as viewed from the Sun?

-- Kevin

Title: Re: New Horizons on schedule !
Post by abyssoft on 05/02/09 at 08:44:29

;D Good one Frank,

From that perspective it looks like a drunk driver.


Title: Re: New Horizons on schedule !
Post by frankuitaalst on 05/02/09 at 09:32:05

Yes , I remember some stories about drunk astronauts , but things get even worser even for spacecraft .. ;D

Title: Re: New Horizons on schedule !
Post by frankuitaalst on 05/02/09 at 10:50:09

At last New Horizons is behaving when Sun is watching  ;)
Sim starts at 01/01/2009 . Viewangle is 20°.
The last frame is magnified 1000 x . Pluto is centered . Charon is also visible.

Title: New Horizons on schedule !
Post by frankuitaalst on 05/30/14 at 02:42:03

"Soon" New horizons will meet Pluto .

A big while ago I made the following animation showing New Horizons view on the Plutonian system when it arrivés at Pluto .
The camera view is only 0.05 ° and stays centered on Pluto .
Charons orbit is in grey .
The sim starts about 200 days before close approach and ends about 300 days later .

(I hope New Horizons will give us an lot better view ! ;))

Title: Re: New Horizons on schedule !
Post by flap on 06/01/14 at 14:15:41

Thank you for your illustrations Frankuitaalst !

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