Author Topic: New Horizons updates  (Read 180643 times)

Offline cscott

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Re: New Horizons updates
« Reply #420 on: 06/19/2018 07:15 PM »
I'm genuinely surprised and impressed that NH even has any propellent left after the burn to intercept MU69!

IIRC when they were evaluating the two possible post-Pluto targets, they chose this one specifically because it gave them better fuel margins for contingencies.  So the fact that they have fuel left over is "by design".
« Last Edit: 06/19/2018 07:15 PM by cscott »

Offline Nomadd

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Re: New Horizons updates
« Reply #421 on: 06/19/2018 07:19 PM »
I'm genuinely surprised and impressed that NH even has any propellent left after the burn to intercept MU69!

IIRC when they were evaluating the two possible post-Pluto targets, they chose this one specifically because it gave them better fuel margins for contingencies.  So the fact that they have fuel left over is "by design".
Yep. One the other targets was larger, but there was something like a 5% chance they'd have fuel issues there.

Offline IanThePineapple

Re: New Horizons updates
« Reply #422 on: 06/19/2018 07:55 PM »
I'm genuinely surprised and impressed that NH even has any propellent left after the burn to intercept MU69!

IIRC when they were evaluating the two possible post-Pluto targets, they chose this one specifically because it gave them better fuel margins for contingencies.  So the fact that they have fuel left over is "by design".
Yep. One the other targets was larger, but there was something like a 5% chance they'd have fuel issues there.

It also could give them the possibility to flyby one or more targets after MU69 since they have extra fuel left.

Online FutureSpaceTourist

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Re: New Horizons updates
« Reply #423 on: 06/25/2018 12:42 PM »
Quote
The New Horizons Kuiper Belt Extended Mission
S.A. Stern, H.A. Weaver, J.R. Spencer, H.A. Elliott, the New Horizons Team
(Submitted on 21 Jun 2018)

The central objective of the New Horizons prime mission was to make the first exploration of Pluto and its system of moons. Following that, New Horizons has been approved for its first extended mission, which has the objectives of extensively studying the Kuiper Belt environment, observing numerous Kuiper Belt Objects (KBOs) and Centaurs in unique ways, and making the first close flyby of the KBO 486958 2014 MU69. This review summarizes the objectives and plans for this approved mission extension, and briefly looks forward to potential objectives for subsequent extended missions by New Horizons.

Subjects:    Earth and Planetary Astrophysics (astro-ph.EP)
DOI:    10.1007/s11214-018-0507-4
Cite as:    arXiv:1806.08393 [astro-ph.EP]
     (or arXiv:1806.08393v1 [astro-ph.EP] for this version)

https://arxiv.org/abs/1806.08393

Online FutureSpaceTourist

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Re: New Horizons updates
« Reply #424 on: 08/04/2018 02:27 PM »
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August 4, 2018
New Horizons Team Reports Initial Success in Observing Ultima Thule

Using telescopes to watch the distant Kuiper Belt object Ultima Thule pass in front of star on Aug. 3-4, observing teams in Senegal and Colombia report that they've gathered data on New Horizons' next flyby target.

Observing the object is a crucial step, but only the first. The team has weeks of data analysis ahead. "We have lots of work to do," said Marc Buie, the New Horizons co-investigator from Southwest Research Institute who leads the observation campaign. "We all fought weather issues [in Senegal and Colombia] but prevailed anyway. The observing teams are due a huge amount of thanks for their efforts."

The New Horizons team is using stellar occultation observations to gather information about the size, shape, environment and other conditions around Ultima Thule. These data are critical to planning the mission's flyby of the object on Jan. 1, 2019.

Read here about the preparations for the observation campaign.

Watch this timelapse video of observation rehearsals from New Horizons team member Simon Porter.

Gathering occultation data is a difficult task. Read here about the successful campaign to gather initial data on Ultima in 2017.

http://pluto.jhuapl.edu/News-Center/News-Article.php?page=20180804

Online FutureSpaceTourist

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Re: New Horizons updates
« Reply #425 on: 08/12/2018 06:32 AM »
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New Horizons Spacecraft Sees Possible Hydrogen Wall at the End of the Solar System

Ryan F. Mandelbaum
Friday 4:42pm

As it speeds away from the Sun, the New Horizons mission may be approaching a “wall.”

The New Horizons spacecraft, now at a distance nearly four billion miles from Earth and already far beyond Pluto, has measured what appears to be a signature of the furthest reaches of the Sun’s energy—a wall of hydrogen. It nearly matches the same measurement made by the Voyager mission 30 years ago, and offers more information as to the furthest limits of our Sun’s reach.

https://gizmodo.com/new-horizons-spacecraft-sees-hydrogen-wall-at-the-end-o-1828258683

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