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| The Abell 2029 galaxy cluster in visible light (right) and IC 1101 in X-ray (left). |
IC 1101 was discovered by William Herschel in 19,June 1790 .IC 1101 is an giant elliptical galaxy at the center of the Abell 2029, It is 1.07 BLight Years away in the constellation of Serpens.
The galaxy has a diameter of approximately 6 million light years, which makes it currently (as of 2012) the largest known galaxy in terms of breadth. It is the central galaxy of a massive cluster containing a mass (mostly dark matter) of roughly 100 trillion stars.Being more than 50 times the size of the Milky Way and 2000 times as massive, if it were in place of our galaxy, it would swallow up the Large Magellanic Cloud, Small Magellanic Cloud, Andromeda Galaxy, and Triangulum Galaxy. IC 1101 owes its size to many collisions of much smaller galaxies about the size of the Milky Way and Andromeda galaxies.
| Observation data (J2000 epoch) | |
|---|---|
| Constellation | Serpens |
| Right ascension | 15h 10m 56.1s |
| Declination | +05° 44′ 41″ |
| Redshift | 23370 ± 30 km/s |
| Distance | 1.07 Gly |
| Type | E3 |
| Number of stars | 100 trillion (1014) |
| Apparent dimensions (V) | 1'.2 × 0'.6 |
| Apparent magnitude (V) By Wiki | 14.7 |