Asteroid Zips by Orion

Wise_wise2013-002_1024

wise_WISE2013-002 August 21st, 2013

Credit: NASA/JPL-Caltech

This image shows the potentially hazardous near-Earth object 1998 KN3 as it zips past a cloud of dense gas and dust near the Orion nebula. NEOWISE, the asteroid-hunting portion of the Wide-field Infrared Survey Explorer, or WISE, mission, snapped infrared pictures of the asteroid, as represented by the green dot. Because asteroids like this one are warmed by the sun to roughly room temperature, they glow brightly at the infrared wavelengths used by WISE.

Astronomers use infrared light from asteroids to measure their sizes, and when combined with visible-light observations, they can also measure the reflectivity of their surfaces. The WISE infrared data reveal that this asteroid is about .7 mile (1.1 kilometers) in diameter and reflects only about 7 percent of the visible light that falls on its surface, which means it is relatively dark.

In this image, blue denotes shorter infrared wavelengths, and red, longer. Hotter objects emit shorter-wavelength light, so they appear blue. The blue stars, for example, have temperatures of thousands of degrees. The coolest gas and dust appears red. The asteroid appears yellow in the image because it is about room temperature: cooler than the stars, but warmer than the dust.

Image Source: /image/wise/WISE2013-002

Curator: Wide-field Infrared Survey Explorer, Berkeley, CA, USA

Image Use Policy: Public Domain

Image Details

Image Type
Observation
Object Name
1998 KN3
Subject - Solar System
Interplanetary Body » Asteroid
Wise_wise2013-002_128
 

Position Details

Position (ICRS)
RA = 5h 21m 2.2s
DEC = 8° 19’ 0.7”
Orientation
North is 176.5° CW
Field of View
36.2 x 36.2 arcminutes
Constellation
Orion

Color Mapping

  Telescope Spectral Band Wavelength
Arrow_left_blue WISE Infrared (Near-IR) 3.4 µm
Arrow_left_cyan WISE Infrared (Near-IR) 4.6 µm
Arrow_left_green WISE Infrared (Mid-IR) 12.0 µm
Arrow_left_red WISE Infrared (Mid-IR) 22.0 µm
Spectrum_ir1
Arrow_top_blue
Arrow_top_cyan
Arrow_top_green
Arrow_top_red
Wise_wise2013-002_1280
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ID
WISE2013-002
Subject Category
A.2.3  
Subject Name
1998 KN3
Credits
NASA/JPL-Caltech
Lightyears
Redshift
Reference Url
/image/wise/WISE2013-002
Type
Observation
Image Quality
Good
Distance Notes
Facility
WISE, WISE, WISE, WISE
Instrument
Color Assignment
Blue, Cyan, Green, Red
Band
Infrared, Infrared, Infrared, Infrared
Bandpass
Near-IR, Near-IR, Mid-IR, Mid-IR
Central Wavelength
3400, 4600, 12000, 22000
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
80.2591573, 8.3168695
Reference Dimension
1600.0, 1600.0
Reference Pixel
801.0, 801.0
Scale
0.000376669, 0.00037666936
Rotation
-176.49
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
Wide-field Infrared Survey Explorer
URL
http://wise.astro.ucla.edu
Name
Email
outreach@ssl.berkeley.edu
Telephone
Address
7 Gauss Way
City
Berkeley
State/Province
CA
Postal Code
94720
Country
USA
Rights
Public Domain
Publisher
Publisher ID
wise
Resource ID
Resource URL
/image/wise/WISE2013-002
Related Resources
Metadata Date
2018-01-11T02:56:47Z
Metadata Version
1.1
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Detailed color mapping information coming soon...

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There is no distance meta data in this image.