NGC 4889 Black Hole: Size, Mass, Diameter, Radius, Location, Facts, Distance from Earth

NGC 4889 Black Hole: Size, Mass, Diameter, Radius, Location, Facts, Distance from Earth

NGC 4889 Black Hole

What is NGC 4889 Black Hole

The NGC 4889 Black Hole is a supermassive black hole located at the center of the elliptical galaxy NGC 4889.

How Old is NGC 4889 Black Hole

The exact age of the NGC 4889 Black Hole is not precisely known, but it is estimated to be around several billion years old.

How Big is NGC 4889 Black Hole

The size of the NGC 4889 Black Hole is characterized by its immense mass and gravitational influence.

NGC 4889 Black Hole Size in Miles / Km

The exact size of the NGC 4889 Black Hole is challenging to determine, as its characteristics are primarily described in terms of mass and gravitational effects rather than physical size.

NGC 4889 Black Hole Solar Mass / Kg / Pounds

The NGC 4889 Black Hole has a mass of approximately 21 billion solar masses, equivalent to approximately 4.18 × 10^40 kg or 9.23 × 10^40 pounds.

NGC 4889 Black Hole Diameter in Miles / Km / Au / Light Years

The diameter of the NGC 4889 Black Hole is not conventionally measured due to its nature. Instead, its characteristics are often described in terms of its Schwarzschild radius, which is a theoretical concept related to the size of the event horizon.

NGC 4889 Black Hole Radius in light years

The NGC 4889 Black Hole has a radius that corresponds to its Schwarzschild radius, which is approximately 39 light years.

NGC 4889 Black Hole Location

The NGC 4889 Black Hole is situated at the center of the elliptical galaxy NGC 4889 in the Coma Cluster.

10 Interesting Fun Facts About NGC 4889 Black Hole

  1. NGC 4889 is part of the Coma Cluster, one of the richest galaxy clusters known.
  2. The black hole in NGC 4889 is among the most massive known black holes in the nearby universe.
  3. It was discovered by the Sloan Digital Sky Survey (SDSS).
  4. NGC 4889 is an elliptical galaxy, and its black hole resides in its central region.
  5. The mass of the black hole in NGC 4889 is more than 2,000 times that of the black hole in the Milky Way.
  6. The powerful gravitational forces around the black hole influence the motions of stars in the galaxy.
  7. NGC 4889 has a bright core, typical of elliptical galaxies.
  8. The black hole's enormous mass is believed to have formed through mergers of smaller black holes and the accretion of mass from its surroundings.
  9. Its immense gravitational pull can warp and distort the surrounding space-time, creating fascinating gravitational lensing effects.
  10. Observations of NGC 4889 and its black hole contribute to our understanding of galaxy formation and the coevolution of galaxies and their central black holes.

NGC 4889 Black Hole Distance from Earth in Light Years / Miles / Km

The NGC 4889 Black Hole is located approximately 308 million light years away from Earth, equivalent to about 1.81 × 10^21 miles (2.91 × 10^21 kilometers).

A Cosmic Odyssey: Hubble's Glimpse into the Abyss

Fresh Insights with Hubble's Revelation

In a mesmerizing display of cosmic beauty, the Hubble Space Telescope has unveiled a new image that promises to deepen our understanding of one of the universe's greatest enigmas: black holes. The image captures a radiant white orb suspended against the vast canvas of the night sky. This celestial marvel is none other than the giant elliptical galaxy NGC 4889, nestled in the heart of the Coma Cluster, approximately 300 million light years away from Earth.

NGC 4889 Galaxy Black Hole

The Sleeping Giant: NGC 4889's Supermassive Black Hole

Beholding the Cosmic Slumber

At the core of NGC 4889 resides a sleeping giant—an astronomical behemoth in the form of a supermassive black hole, boasting a staggering mass of 21 billion times that of our sun. Despite its colossal proportions, this celestial giant currently rests in a dormant state, allowing astronomers a unique opportunity to witness the formation of stars around its periphery.

Dimensional Grandeur: Sizing Up the Event Horizon

To comprehend the enormity of NGC 4889's black hole, one must turn to its event horizon—the boundary beyond which nothing can escape its gravitational clutches. NASA estimates this giant's event horizon to boast a diameter of about 130 billion kilometers. A colossal figure, it surpasses our local black hole in the Milky Way by a significant margin, both in mass and scale.

NGC 4889 Galaxy Black Hole

Property Details
Galaxy Name NGC 4889 (Caldwell 35)
Black Hole Type Supermassive Black Hole (SMBH)
Black Hole Mass 21 billion solar masses (estimated)
Event Horizon Diameter Approximately 130 billion kilometers
Distance from Earth 94 million parsecs (308 million light years)
Galaxy Classification E4 Supergiant Elliptical Galaxy
Galactic Cluster Coma Cluster
Galactic Position Center of Component A in the Coma Cluster
Discovery Year 1785
Discoverer Frederick William Herschel I
Additional Designations Caldwell 35, A1656-BCG
Visible Magnitude 11.4
Globular Clusters 15,800 (more than Messier 87)
Hubble Sequence Classification E4 type galaxy, cD galaxy
Redshift 0.0266 (Sloan Digital Sky Survey)
Black Hole Activity Currently dormant, with past quasar potential
Age of Light Reaching Earth Approximately 300 million years old

A Celestial Ballet: Stars Forming and Orbiting

Galactic Buffet and Dormant Phases

During its active phases, NGC 4889's black hole was a cosmic powerhouse, voraciously pulling in gas and dust, heating them to extreme temperatures, and releasing colossal amounts of energy. The current dormant state, however, witnesses stars forming and peacefully orbiting the black hole. This dynamic interplay offers astronomers a unique spectacle, providing insights into the lifecycle of these cosmic entities.

Beyond the Visible: Studying Black Holes

While black holes remain invisible due to their gravitational pull preventing light escape, astronomers employ ingenious methods to locate and study them. By observing their impact on surrounding objects like stars and gas clouds, scientists aim to unravel the profound mysteries that black holes hold.

NGC 4889: A Galactic Tapestry Unveiled

Historical Significance and Discovery

NGC 4889, also known as Caldwell 35, has a rich history dating back to its discovery in 1785 by British astronomer Frederick William Herschel I. Initially cataloged as a bright, nebulous patch, NGC 4889 has evolved into a pivotal subject for both amateur and professional astronomers.

Galactic Characteristics and Morphology

Classified as an E4 supergiant elliptical galaxy, NGC 4889 boasts a flattened, unequal distribution of mass, with a dense interstellar medium filled with heavy elements emitted by evolved stars. Its diffuse stellar halo and a population of 15,800 globular clusters contribute to its captivating celestial presence.

Delving into NGC 4889's Dimensions and Mass

Cosmic Proportions: Size and Mass Estimates

NGC 4889 stands out as potentially the largest and most massive galaxy within 100 Mpc (326 million light years) of the Milky Way. Its effective radius, diffuse light halo, and massive size provide astronomers with a canvas to explore the diversity of galactic structures.

Black Hole Mass: A Colossal Revelation

The central supermassive black hole in NGC 4889, measured in 2011, astounds with a mass 5,200 times greater than the Milky Way's central black hole. Its colossal event horizon, ranging from 20 to 124 billion kilometers, offers a glimpse into the titanic forces at play in this cosmic giant.

NGC 4889's Cosmic Neighbors

Cluster Center and Supercluster Connection

NGC 4889 lies at the heart of the Coma Cluster, a colossal congregation of 2,000 galaxies. Also known as A1656-BCG, it shares its cosmic neighborhood with NGC 4874, contributing to a total cluster mass estimated at 4×1015 solar masses. The Coma Cluster's central position within the Coma Supercluster adds further cosmic significance.

Caldwell 35: A Glimpse into the Cosmic Past

Caldwell 35, or NGC 4889, beckons observers to gaze into the past, offering a journey 300 million years back in time. As the most distant object in the Caldwell catalog, its ancient light provides a unique perspective on the evolution of our cosmos.

Caldwell 35's Black Hole: A Galactic Enigma Unveiled

Dormancy and Future Possibilities

While the black hole in Caldwell 35 may be dormant now, its cosmic buffet has run dry. Stars continue to form and orbit peacefully, presenting a dynamic interplay that challenges traditional notions of black hole behavior. Astronomers remain vigilant, poised for the potential reawakening of this colossal celestial entity.

The Cosmic Dance Continues: NGC 4889's Ongoing Story

Galactic Evolution and Stellar Dynamics

Giant elliptical galaxies like NGC 4889 are cosmic tapestries woven through the intricate dance of stellar evolution. The flattening of mass, the presence of a diffuse interstellar medium, and the orbital motions of member stars all contribute to the galaxy's captivating presence in the cosmos.

Galactic Clusters and Interstellar Medium

NGC 4889 boasts an impressive population of 15,800 globular clusters, exceeding even Messier 87, a well-known giant elliptical galaxy. The space between stars is filled with a diffuse interstellar medium, enriched by elements ejected from stars as they reach the end of their main sequence lifetime.

Insights into the Galaxy's Composition

Element Origins and Stellar Contributions

The composition of NGC 4889's interstellar medium is a result of continuous contributions from intermediate mass stars in the asymptotic giant branch, along with elements produced by supernova explosions. Carbon and nitrogen are supplied, while heavier elements like oxygen to iron are primarily products of supernova events within the galaxy.

Heating the Interstellar Medium

Continuous heating of the interstellar medium occurs through the emission of in-falling gases towards the central supermassive black hole. This intricate cosmic ballet shapes the environment within NGC 4889, contributing to its dynamic and ever-evolving nature.

Black Hole Dynamics: A Colossal Revelation

Measuring Velocity Dispersion

A groundbreaking study in 2011 measured the velocity dispersion of the central regions of NGC 4889, revealing the extraordinary mass of its central supermassive black hole. The black hole's mass, estimated at 21 billion solar masses, positions it among the most massive black holes ever discovered.

Event Horizon and Quasar Possibilities

The colossal event horizon of NGC 4889's black hole, ranging from 20 to 124 billion kilometers, suggests a gravitational dominance that extends far beyond the visible confines of the galaxy. The ionized medium detected around the black hole hints at a possible quasar phase in its cosmic history.

NGC 4889's Cosmic Address

Center of the Coma Cluster

NGC 4889 holds a central position within the Coma Cluster, sharing its cosmic neighborhood with NGC 4874. Often referred to as A1656-BCG, it acts as a gravitational anchor for the 2,000 galaxies within the cluster.

Supercluster Connections

The Coma Cluster's location at the heart of the Coma Supercluster places NGC 4889 within one of the nearest superclusters to the Laniakea Supercluster. This intricate cosmic web adds layers of complexity to our understanding of the galaxy's place in the larger cosmic structure.

Caldwell 35: A Glimpse into Deep Time

The Ageless Light

Caldwell 35, or NGC 4889, invites us to witness the universe as it existed 300 million years ago. Its ancient light traverses the vast cosmic expanse, offering a unique lens through which we can peer into the deep past of our cosmos.

William Herschel's Legacy

Discovered in 1785 by British astronomer Frederick William Herschel I, NGC 4889 carries a legacy shaped by Herschel's meticulous observations and cataloging. Over the centuries, NGC 4889 has become a cornerstone in the exploration of distant galaxies.

Caldwell 35's Black Hole: A Cosmic Enigma

Dormancy and Stellar Formation

While the black hole within Caldwell 35 may have ceased its cosmic feast, stars continue to form and orbit peacefully. This seemingly serene coexistence challenges conventional notions of black hole behavior, prompting astronomers to closely monitor the galaxy for any signs of future cosmic activities.

A Window into Cosmic Evolution

As NGC 4889's black hole remains dormant, it provides a unique window into the cosmic evolution of galaxies. The ongoing formation of stars and the intricate interplay within this celestial giant paint a dynamic picture of the cosmic forces that shape our universe.


As we gaze into the abyss of NGC 4889's supermassive black hole, we're not merely witnessing an astronomical wonder; we're delving into the secrets that shape the fabric of our universe. From its historical discovery to the present-day revelations, NGC 4889's black hole stands as a beacon, guiding astronomers on a cosmic journey to unravel the mysteries that lie beyond the veil of space and time.

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