Statements (26)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:Apache_Pulsar
|
| gptkbp:age |
about 13 billion years
|
| gptkbp:contains_star |
gptkb:red_dwarf_star
|
| gptkbp:discovered_by |
David C. Backer
|
| gptkbp:discovery_year |
gptkb:1987
|
| gptkbp:distance |
about 650 light years
|
| gptkbp:first_binary_pulsar |
gptkb:true
|
| gptkbp:has_field |
very low
|
| gptkbp:has_luminosity |
very low
|
| gptkbp:has_stations |
about 1400 MHz
|
| https://www.w3.org/2000/01/rdf-schema#label |
PSR B1957+20
|
| gptkbp:is_observed_in |
multiple radio telescopes
|
| gptkbp:lighting |
not detected
|
| gptkbp:located_in |
constellation Hercules
|
| gptkbp:mass |
about 1.4 solar masses
|
| gptkbp:orbital_period |
0.197 days
|
| gptkbp:origin |
designated by its position in the sky
|
| gptkbp:perihelion |
gptkb:Apache_Pulsar
|
| gptkbp:pulsar_wind |
exists
|
| gptkbp:research |
pulsar timing
|
| gptkbp:roll_rate |
1.6 milliseconds
|
| gptkbp:rotation_period |
very high
|
| gptkbp:significance |
study of neutron stars
|
| gptkbp:system |
binary system
|
| gptkbp:bfsParent |
gptkb:Hercules_constellation
|
| gptkbp:bfsLayer |
5
|