|
gptkbp:instance_of
|
gptkb:star
|
|
gptkbp:associated_with
|
gptkb:Hercules_constellation
|
|
gptkbp:collaboration
|
yes
|
|
gptkbp:collaborations
|
yes
|
|
gptkbp:collaborative_projects
|
yes
|
|
gptkbp:contains_star
|
gptkb:main-sequence_star
|
|
gptkbp:discovered_by
|
gptkb:NASA
|
|
gptkbp:distance_from_earth
|
approximately 7,500 light-years
|
|
gptkbp:educational_value
|
yes
|
|
gptkbp:emissions_standard
|
no
|
|
gptkbp:file_system
|
yes
|
|
gptkbp:first_appearance
|
gptkb:1971
|
|
gptkbp:funding
|
gptkb:NASA
|
|
gptkbp:has_astrophysical_models
|
yes
|
|
gptkbp:has_black_hole_companion
|
no
|
|
gptkbp:has_cultural_impact
|
no
|
|
gptkbp:has_data_analysis
|
yes
|
|
gptkbp:has_data_available
|
yes
|
|
gptkbp:has_future_observations
|
yes
|
|
gptkbp:has_historical_significance
|
yes
|
|
gptkbp:has_light_curve_variability
|
yes
|
|
gptkbp:has_neutron_star_companion
|
yes
|
|
gptkbp:has_observational_studies
|
yes
|
|
gptkbp:has_optical_counterpart
|
yes
|
|
gptkbp:has_periodicity
|
yes
|
|
gptkbp:has_photometric_observations
|
yes
|
|
gptkbp:has_publications
|
yes
|
|
gptkbp:has_pulsations
|
yes
|
|
gptkbp:has_scientific_community_interest
|
yes
|
|
gptkbp:has_spectral_type
|
O-type star
|
|
gptkbp:has_spectroscopic_observations
|
yes
|
|
gptkbp:has_supernova
|
no
|
|
gptkbp:has_theoretical_studies
|
yes
|
|
gptkbp:has_variations
|
yes
|
|
gptkbp:has_xray_binaries
|
yes
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Hercules X-2
|
|
gptkbp:is_observed_in
|
gptkb:RXTE
gptkb:Chandra_X-ray_Observatory
gptkb:XMM-Newton
|
|
gptkbp:lighting
|
no
yes
about 10^38 erg/s
|
|
gptkbp:located_in
|
gptkb:Hercules_constellation
|
|
gptkbp:mass
|
approximately 1.4 solar masses
|
|
gptkbp:media_coverage
|
yes
|
|
gptkbp:notable_feature
|
strong magnetic field
|
|
gptkbp:orbital_period
|
approximately 1.7 days
|
|
gptkbp:public_interest
|
yes
|
|
gptkbp:research
|
yes
|
|
gptkbp:research_importance
|
yes
|
|
gptkbp:type
|
gptkb:X-ray_pulsar
|
|
gptkbp:bfsParent
|
gptkb:Hercules
|
|
gptkbp:bfsLayer
|
4
|