Hubble/Webb side-by-side

Stsci_2022-047c_1024

stsci_2022-047c September 28th, 2022

Credit: NASA, ESA, C.A Thomas, J. Li (PSI), STScI

For the first time, NASA’s James Webb Space Telescope and Hubble Space Telescope have taken simultaneous observations of the same target.

These images, Hubble on left and Webb on the right, show observations of Dimorphos several hours after NASA’s Double Asteroid Redirection Test (DART) intentionally impacted the moonlet asteroid. It was the world’s first test of the kinetic impact technique using a spacecraft to deflect an asteroid by modifying its orbit.

Both Webb and Hubble observed the asteroid before and after the collision took place.

Scientists will use the combined observations from Hubble and Webb to gain knowledge about the nature of the surface of Dimorphos, how much material was ejected by the collision, how fast it was ejected, and the distribution of particle sizes in the expanding dust cloud.

In the coming months, scientists will also use Webb’s Mid-Infrared Instrument (MIRI) and Near-Infrared Spectrograph (NIRSpec) to observe Dimorphos further. Spectroscopic data will provide researchers with insight into the asteroid’s composition. Hubble will monitor Dimorphos ten more times over the next three weeks to monitor how the ejecta cloud expands and fades over time.

Hubble observations were conducted in one filter, WFC3/UVIS F350LP (assigned the color blue), while Webb observed at F070W (0.7 microns, assigned the color red).

Provider: Space Telescope Science Institute

Image Source: https://hubblesite.org/contents/news-releases/2022/news-2022-047

Curator: STScI, Baltimore, MD, USA

Image Use Policy: https://www.stsci.edu/copyright

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Image Details

Image Type
Observation
Object Name
DART Dimorphos
Subject - Solar System
Interplanetary Body > Asteroid

Position Details

Position (ICRS)
RA = 0h 0m 0.0s
DEC = 0° 0’ 0.0”
Constellation
Pisces

Color Mapping

  Telescope Spectral Band Wavelength
Blue Hubble (WFC3/UVIS) Optical 350.0 nm
Red Webb (NIRCam) Infrared 700.0 nm
Spectrum_base
Blue
Red
Stsci_2022-047c_1280
×
ID
2022-047c
Subject Category
A.2.3  
Subject Name
DART, Dimorphos
Credits
NASA, ESA, C.A Thomas, J. Li (PSI), STScI
Release Date
2022-09-28
Lightyears
Redshift
Reference Url
https://hubblesite.org/contents/news-releases/2022/news-2022-047
Type
Observation
Image Quality
Good
Distance Notes
Dimorphos was about 6.8 million miles (11 million kilometers) from Earth at the time of DART's impact.
Facility
Hubble, Webb
Instrument
WFC3/UVIS, NIRCam
Color Assignment
Blue, Red
Band
Optical, Infrared
Bandpass
Central Wavelength
350, 700
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
2000.0
Reference Value
0, 0
Reference Dimension
Reference Pixel
Scale
Rotation
Coordinate System Projection:
Quality
Position
FITS Header
Notes
Creator (Curator)
STScI
URL
https://www.stsci.edu/
Name
Space Telescope Science Institute Office of Public Outreach
Email
outreach@stsci.edu
Telephone
410-338-4444
Address
3700 San Martin Drive
City
Baltimore
State/Province
MD
Postal Code
21218
Country
USA
Rights
https://www.stsci.edu/copyright
Publisher
STScI
Publisher ID
stsci
Resource ID
STSCI-H-p22047c-f-1592x636.tif
Metadata Date
2022-09-29T11:15:34-04:00
Metadata Version
1.2
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Detailed color mapping information coming soon...

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There is no distance meta data in this image.