Statements (67)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:star
|
| gptkbp:apparent_magnitude |
approximately 12.5
|
| gptkbp:contains |
gptkb:supermassive_black_hole
|
| gptkbp:contains_star |
gptkb:star
|
| gptkbp:discovered_by |
gptkb:Bruce_Balick
|
| gptkbp:discovery_year |
gptkb:1971
|
| gptkbp:distance |
approximately 6,000 light years
|
| gptkbp:emissions_standard |
gptkb:X-rays
|
| gptkbp:has_spectral_type |
O-type star
|
| https://www.w3.org/2000/01/rdf-schema#label |
Cygnus X-7
|
| gptkbp:is_associated_with |
gptkb:supernova_remnants
accretion disks gamma-ray emissions black hole candidates |
| gptkbp:is_known_for |
its brightness
X-ray flares its energy output high-energy emissions its luminosity its spectral emissions its mass |
| gptkbp:is_located_at |
Declination +35° 42' 00''
Right Ascension 19h 58m 21.0s |
| gptkbp:is_monitored_by |
gptkb:NASA
|
| gptkbp:is_notable_for |
its variability
mass transfer processes |
| gptkbp:is_observed_in |
gptkb:Chandra_X-ray_Observatory
gptkb:European_Space_Agency gptkb:Hubble_Space_Telescope optical wavelengths ground-based observatories X-ray wavelengths |
| gptkbp:is_part_of |
gptkb:space_exploration
gptkb:Cygnus_constellation gptkb:cosmology gptkb:Milky_Way_galaxy X-ray sources high-energy astrophysics binary star systems high-energy physics X-ray astronomy astrophysical phenomena astrophysical research cosmic phenomena stellar mass black holes X-ray astrophysics X-ray binary research X-ray binary systems |
| gptkbp:is_related_to |
gptkb:Cygnus_X-1
stellar dynamics stellar populations stellar mass stellar evolution theories |
| gptkbp:is_studied_for |
gptkb:gravitational_waves
stellar evolution black hole formation massive stars accretion processes stellar interactions stellar mass loss |
| gptkbp:is_studied_in |
astrophysics
observational astronomy space science |
| gptkbp:located_in |
constellation Cygnus
|
| gptkbp:orbital_period |
approximately 5.6 days
|
| gptkbp:bfsParent |
gptkb:Cygnus
|
| gptkbp:bfsLayer |
5
|