NGC 7098 is a
doubled barred spiral galaxy located about 95 million
light-year
A light-year, alternatively spelled light year, is a large unit of length used to express astronomical distances and is equivalent to about 9.46 trillion kilometers (), or 5.88 trillion miles ().One trillion here is taken to be 1012 ...
s away from Earth in the
constellation
A constellation is an area on the celestial sphere in which a group of visible stars forms Asterism (astronomy), a perceived pattern or outline, typically representing an animal, mythological subject, or inanimate object.
The origins of the e ...
of
Octans
Octans () is a faint constellation located in the deep Southern Sky. Its name is Latin for the eighth part of a circle, but it is named after the octant, a navigational instrument. Devised by French astronomer Nicolas Louis de Lacaille in 1752, ...
.
NGC 7098 has an estimated diameter of 152,400 light-years.
NGC 7098 was discovered by astronomer
John Herschel
Sir John Frederick William Herschel, 1st Baronet (; 7 March 1792 – 11 May 1871) was an English polymath active as a mathematician, astronomer, chemist, inventor, experimental photographer who invented the blueprint and did botanical wor ...
on September 22, 1835.
Characteristics
NGC 7098 has a very prominent bar that is shaped like a broad oval with very prominent, nearly straight
ansae. Surrounding the bar, an inner ring made of four tightly wrapped spiral arms is found. Located outside of the inner ring, a well-defined outer ring surrounding the inner region appears to have formed due to the wrapping of two spiral arms. It appears that both rings are being affected by new
. However, there is no star formation in the core of NGC 7098 as shown by the absence of
dust lanes.
See also
*
NGC 7013
*
NGC 7020
References
External links
SIMBAD
Ring galaxies
Barred spiral galaxies
Octans
7098
67266
Astronomical objects discovered in 1835
{{Spiral-galaxy-stub