New Horizons Takes Closest Image Ever of a Kuiper Belt Object

By Nancy Atkinson - December 4, 2015 at 5:52 PM UTC | Planetary Science
nh-kuiper-belt-loop.gif

The New Horizons spacecraft is already 209,437,000 km (130,138,000 miles)

past

Pluto (as of Dec. 4, 2015), making it 5,226,950,000 km (3,247,880,000 miles) from Earth. So, yes, it's

way

out there. Recently, it took the closest images ever of a distant Kuiper Belt object, setting a record by a factor of at least 15, according to NASA. The team says this image demonstrates the spacecraft's ability to observe numerous similar bodies over the next several years.

The object spotted by the spacecraft's Long Range Reconnaissance Imager (LORRI) is called 1994 JR1, or also Plutino 15810. It is a 90-mile (150-kilometer)-wide ancient body. This animation was created from 4 images taken on Nov. 2, spaced an hour apart.

When these images were taken, 1994 JR1 was 3.3 billion miles (5.3 billion km) from the Sun, but only 170 million miles (280 million km) away from New Horizons.

1994 JR1 is an interesting object, as it also is an "accidental quasi-satellite" of Pluto, meaning it is in a specific type of co-orbital configuration (1:1 orbital resonance) with Pluto, and it will stay close to the dwarf planet for about 350,000 years.

You can read a paper about 1994 JR1

here

.

The New Horizons team is still waiting to hear if NASA will approve an extended mission into the Kuiper Belt. The spacecraft is already headed for a close flyby of another Kuiper Belt object, 2014 MU69, on Jan. 1, 2019, and maybe more, if all goes well and funding is approved.

Source:

New Horizons

Nancy Atkinson

Nancy Atkinson

Nancy Atkinson is a space journalist and author with a passion for telling the stories of people involved in space exploration and astronomy. She is currently retired from daily writing, but worked at Universe Today for 20 years as a writer and editor. She also contributed articles to The Planetary Society, Ad Astra (National Space Society), New Scientist and many other online outlets.

Her 2019 book, "Eight Years to the Moon: The History of the Apollo Missions,” shares the untold stories of engineers and scientists who worked behind the scenes to make the Apollo program so successful, despite the daunting odds against it. Her first book “Incredible Stories From Space: A Behind-the-Scenes Look at the Missions Changing Our View of the Cosmos” (2016) tells the stories of 37 scientists and engineers that work on several current NASA robotic missions to explore the solar system and beyond.

Nancy is also a NASA/JPL Solar System Ambassador, and through this program, she has the opportunity to share her passion of space and astronomy with children and adults through presentations and programs. Nancy's personal website is nancyatkinson.com