A matter of distance

In space, being outshone is an occupational hazard. This NASA/ESA Hubble Space Telescope image captures a galaxy named NGC 7250. Despite being remarkable in its own right — it has bright bursts of star formation and recorded supernova explosions it blends into the background somewhat thanks to the gloriously bright star hogging the limelight next to it.

This bright object is a single and little-studied star named TYC 3203-450-1, located in the constellation of Lacerta (The Lizard), much closer than the much more distant galaxy. Only this way a normal star can outshine an entire galaxy, consisting of billions of stars. Astronomers studying distant objects call these stars “foreground stars” and they are often not very happy about them, as their bright light is contaminating the faint light from the more distant and interesting objects they actually want to study.

In this case TYC 3203-450-1 million times closer than NGC 7250 which lies over 45 million light-years away from us. Would the star be the same distance as NGC 7250, it would hardly be visible in this image.

Credit:

ESA/Hubble & NASA

About the Image

Id:potw1717a
Type:Observation
Release date:24 April 2017, 06:00
Size:4104 x 4104 px

About the Object

Name:NGC 7250, TYC 3203-450-1
Type:Local Universe : Star
Local Universe : Galaxy
Constellation:Lacerta
Category:Galaxies
Stars

Image Formats

Large JPEG
4.0 MB
Screensize JPEG
172.1 KB

Zoomable


Wallpapers

1024x768
169.8 KB
1280x1024
265.4 KB
1600x1200
403.9 KB
1920x1200
539.7 KB
2048x1536
680.2 KB

Coordinates

Position (RA):22 18 18.99
Position (Dec):40° 33' 9.73"
Field of view:2.71 x 2.71 arcminutes
Orientation:North is 75.0° right of vertical

Colours & filters

BandWavelengthTelescope
Optical
Very Broad
350 nm Hubble Space Telescope
WFC3
Optical
V
555 nm Hubble Space Telescope
WFC3
Infrared
H
1.545 μm Hubble Space Telescope
WFC3
Optical
I
814 nm Hubble Space Telescope
WFC3

Also see our


Accelerated by CDN77