Statements (22)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:star
|
| gptkbp:associated_with |
gptkb:Hercules_constellation
|
| gptkbp:contains_star |
gptkb:main-sequence_star
|
| gptkbp:discovered_by |
gptkb:Robert_A._Wilson
|
| gptkbp:discovery_year |
gptkb:1971
|
| gptkbp:distance_from_earth |
about 7,000 light years
|
| gptkbp:first_x-ray_source |
identified as a pulsar
|
| gptkbp:has_periodicity |
in X-ray brightness
|
| gptkbp:has_spectral_type |
O9.5 V
|
| gptkbp:has_variations |
in X-ray emissions
|
| https://www.w3.org/2000/01/rdf-schema#label |
Hercules X-1
|
| gptkbp:is_observed_in |
gptkb:RXTE
gptkb:Chandra_X-ray_Observatory gptkb:Hubble_Space_Telescope |
| gptkbp:lighting |
approximately 10^37 watts
|
| gptkbp:located_in |
constellation Hercules
|
| gptkbp:mass |
1.4 solar masses
|
| gptkbp:orbital_period |
1.7 days
|
| gptkbp:pulsation_period |
0.7 seconds
|
| gptkbp:type |
gptkb:Apache_Pulsar
|
| gptkbp:bfsParent |
gptkb:Hercules
|
| gptkbp:bfsLayer |
4
|