Statements (87)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:galaxy
gptkb:spiral_galaxy |
| gptkbp:apparent_magnitude |
9.4
9.3 |
| gptkbp:body_shape |
gptkb:active_galactic_nucleus
|
| gptkbp:contains |
gptkb:active_galactic_nucleus
gptkb:supernova_remnants gptkb:supernova_SN_1901_B |
| gptkbp:contains_star |
yes
|
| gptkbp:diameter |
approximately 100,000 light-years
|
| gptkbp:discovered_by |
gptkb:Pierre_Méchain
gptkb:Hermann_von_Helmholtz |
| gptkbp:discovery_year |
1781
1850 |
| gptkbp:distance_from_earth |
approximately 55 million light-years
approximately 56 million light-years |
| gptkbp:exhibition |
gptkb:Messier_catalog
gptkb:NGC_4321 |
| gptkbp:features |
prominent spiral arms
|
| gptkbp:has |
gptkb:active_galactic_nucleus
star formation regions bar structure a complex structure bright central bulge multiple star clusters high surface brightness multiple globular clusters a significant amount of dark matter a prominent dust lane a variety of stellar populations various spectral types of stars a complex structure of dust lanes a high surface brightness a prominent central bulge multiple star-forming regions a redshift of approximately 0.0055 several supernovae observed a high star formation rate a notable presence of interstellar dust a prominent bulge-to-disk ratio a redshift of approximately 0.0044 a significant number of planetary nebulae a significant number of type II supernovae a significant number of young stars a variety of chemical compositions in stars a variety of morphological features a well-defined rotation curve Hubble classification of SAb numerous H II regions |
| gptkbp:has_spectral_type |
SAB(rs)bc
|
| https://www.w3.org/2000/01/rdf-schema#label |
M100
|
| gptkbp:is |
a site of ongoing research
a popular target for astrophotography a subject of morphological studies often studied in astronomy visible in amateur telescopes a target for deep-sky observations a member of the Messier catalog part of the Local Supercluster a subject of photometric studies an example of a grand design spiral galaxy often referred to as the ' Eye of the Virgo' one of the brightest galaxies in the Virgo cluster a galaxy with a rich history of observations one of the brightest galaxies in the Virgo Cluster a benchmark for spiral galaxies a galaxy that has been extensively mapped. a galaxy with a complex interaction history a galaxy with a well-studied core region a target for galaxy formation studies often compared to other spiral galaxies part of the local supercluster a galaxy that exhibits various types of stellar activity an important galaxy for understanding galaxy evolution a galaxy that contributes to our understanding of galaxy dynamics |
| gptkbp:is_observed_in |
gptkb:Hubble_Space_Telescope
|
| gptkbp:is_part_of |
gptkb:Virgo_Cluster
|
| gptkbp:known_as |
gptkb:NGC_4321
|
| gptkbp:located_in |
gptkb:Virgo_constellation
|
| gptkbp:mass |
about 100 billion solar masses
|
| gptkbp:notable_galaxies |
SBbc
|
| gptkbp:part_of |
gptkb:Virgo_Cluster
|
| gptkbp:redshift |
0.0047
|
| gptkbp:type |
gptkb:spiral_galaxy
grand design spiral galaxy |
| gptkbp:bfsParent |
gptkb:Serpens_constellation
|
| gptkbp:bfsLayer |
6
|