gptkbp:instance_of
|
gptkb:star
|
gptkbp:age
|
approximately 3 million years
3 million years
around 12 million years
|
gptkbp:apparent_magnitude
|
5.4
|
gptkbp:contains
|
gptkb:battle
several hundred stars
ongoing star formation
Blue supergiants
Red giants
multiple bright stars
|
gptkbp:declination
|
+35° 47′ 00″
+57° 07′ 00″
|
gptkbp:depicted_in
|
gptkb:Northern_Hemisphere
gptkb:physicist
gptkb:sneaker
gptkb:observatory
gptkb:battle
naked eye
clear skies
autumn months
|
gptkbp:diameter
|
approximately 20 light years
30 light years
|
gptkbp:discovered_by
|
gptkb:William_Herschel
|
gptkbp:distance
|
approximately 7,500 light years
7,500 light years
|
gptkbp:exhibition
|
gptkb:New_General_Catalogue
gptkb:Messier_34
|
gptkbp:has_color
|
0.5
0.65
|
gptkbp:has_member
|
hundreds of stars
|
gptkbp:has_spectral_type
|
various types
O and B type stars
|
https://www.w3.org/2000/01/rdf-schema#label
|
NGC 884
|
gptkbp:includes
|
astronomical surveys
|
gptkbp:is_a
|
gptkb:star
|
gptkbp:is_associated_with
|
gptkb:NGC_869
|
gptkbp:is_known_for
|
its young stars
|
gptkbp:is_located_near
|
gptkb:NGC_869
|
gptkbp:is_noted_for
|
gptkb:its_beauty
its historical significance
its rich star field
its stellar density
|
gptkbp:is_observed_in
|
amateur astronomers
professional astronomers
optical wavelengths
|
gptkbp:is_often_compared_to
|
gptkb:NGC_869
|
gptkbp:is_part_of
|
gptkb:Milky_Way_Galaxy
gptkb:Milky_Way_galaxy
the Perseus O B1 association
the Double Cluster (NGC 884 and NGC 869)
Double Cluster
|
gptkbp:is_popular_in
|
amateur astronomy
astrophotography
|
gptkbp:is_recognized_by
|
NGC designation
|
gptkbp:is_similar_to
|
gptkb:NGC_869
|
gptkbp:is_studied_in
|
gptkb:observatory
stellar dynamics
stellar evolution
star formation
|
gptkbp:located_in
|
gptkb:Perseus_constellation
Galactic plane
right ascension 02h 22m 38s, declination +35° 47′ 00″
|
gptkbp:members
|
open clusters
open star clusters
|
gptkbp:part_of
|
Double Cluster in Perseus
|
gptkbp:population
|
high
|
gptkbp:region
|
Perseus region
|
gptkbp:right_ascension
|
02h 22m 38s
2h 19m 30s
|
gptkbp:type
|
gptkb:star
|
gptkbp:year_created
|
1786
|
gptkbp:bfsParent
|
gptkb:Perseus
gptkb:Perseus_constellation
|
gptkbp:bfsLayer
|
4
|