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News Release Archive:

News Release 14 of 959

July 1, 2014 02:00 PM (EDT)

News Release Number: STScI-2014-35

Hubble to Proceed with Full Search for New Horizons Targets

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Image: Hubble Survey Finds Two Kuiper Belt Objects to Support New Horizons Mission

Hubble Survey Finds Two Kuiper Belt Objects to Support New Horizons MissionSTScI-PRC2014-35

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ABOUT THIS IMAGE:

These images are from a Hubble Space Telescope survey to find Kuiper Belt objects (KBOs) in support of NASA's New Horizons mission to Pluto. The Kuiper Belt is a debris field of icy bodies left over from the solar system's formation 4.6 billion years ago.

Once the New Horizons craft flies by Pluto in mid-2015, the team's goal is to get NASA's approval to retarget the probe to fly by a KBO, which might only measure 20 miles across.

To test the feasibility of finding New Horizons targets with Hubble, a set of pilot Hubble observations were executed in June 2014. After a swift and intensive data analysis of approximately 200 Hubble images, the New Horizons team met the pilot program criterion of finding a minimum of two KBOs.

Multiple exposures taken with Hubble tracked the KBOs moving against the background field of stars in the summer constellation Sagittarius.

The image at left shows a KBO at an estimated distance of approximately 4 billion miles from Earth. Its position noticeably shifts between exposures taken approximately 10 minutes apart. The image at right shows a second KBO at roughly a similar distance.

The positions of these newly discovered objects are not consistent with any KBOs discovered previously. In reality, they are too faint to have been seen with ground-based telescopes (magnitudes 26.8 and 27.3, respectively).

It will be many weeks before the team can establish whether either of these pilot-program KBOs is a suitable target for New Horizons to visit, but their discovery provides sufficient evidence that a wider search to be executed with Hubble will find an optimum object.

Image Type: Astronomical

Credit: NASA, ESA, SwRI, JHU/APL, and the New Horizons KBO Search Team

NEWS RELEASE IMAGES

The above montage includes these images:

Kuiper Belt Object 0720090F Image Type: Astronomical Kuiper Belt Object 0720090F Kuiper Belt Object 1110113Y Image Type: Astronomical Kuiper Belt Object 1110113Y

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