Statements (113)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:exoplanet
|
| gptkbp:atmosphere |
hydrogen and helium
in its atmosphere water vapor detected high due to gravity |
| gptkbp:average_temperature |
approximately 1200 K
|
| gptkbp:contains_star |
G0 V
|
| gptkbp:country |
gptkb:Giant
part of the Milky Way |
| gptkbp:discovered_by |
gptkb:1999
David Charbonneau |
| gptkbp:discovery |
gptkb:Harvard-Smithsonian_Center_for_Astrophysics
transit method pioneered transit photometry techniques first exoplanet found to transit a star |
| gptkbp:discovery_year |
gptkb:1999
|
| gptkbp:distance_from_earth |
approximately 159 light years
|
| gptkbp:eccentricity |
0.01
very low close to 0 |
| gptkbp:first_detection_of_water |
in an exoplanet atmosphere
|
| gptkbp:first_exoplanet |
to be observed transiting its star
to have its atmosphere characterized |
| gptkbp:fledging_period |
observed during transits
occurs due to high temperatures |
| gptkbp:future_prospects |
focus on atmospheric studies
future habitability studies |
| gptkbp:growth_habit |
not habitable
|
| gptkbp:has_atmospheric_escape |
due to high temperatures
|
| gptkbp:has_been_measured |
for its density
|
| gptkbp:has_high_temperature |
due to proximity to its star
|
| gptkbp:has_radius |
1.35 times the radius of Jupiter
1.35 Jupiter radii 1.38 Jupiter radii |
| gptkbp:has_spectral_type |
G-type star
|
| gptkbp:has_water_vapor |
detected in its atmosphere
|
| gptkbp:hosts |
gptkb:HD_209458
|
| https://www.w3.org/2000/01/rdf-schema#label |
HD 209458 b
|
| gptkbp:is_a |
gptkb:Giant
|
| gptkbp:is_analyzed_in |
for atmospheric composition
|
| gptkbp:is_associated_with |
the discovery of other hot Jupiters
|
| gptkbp:is_considered |
a hot Jupiter
a benchmark for exoplanet studies a key target for future missions. a prototype for future exoplanet studies |
| gptkbp:is_examined_in |
for signs of weather patterns
|
| gptkbp:is_influential_in |
the field of exoplanet research
|
| gptkbp:is_known_for |
transit method of detection
its rapid orbital period its large size relative to its star its significant atmospheric studies |
| gptkbp:is_located_in |
about 159 light-years from Earth
|
| gptkbp:is_notable_for |
its discovery method being a major advancement in astronomy
|
| gptkbp:is_observed_in |
gptkb:Spitzer_Space_Telescope
gptkb:Kepler_Space_Telescope gptkb:Hubble_Space_Telescope during transits |
| gptkbp:is_one_of |
the first exoplanets discovered
|
| gptkbp:is_part_of |
the study of planetary atmospheres
the ongoing search for life beyond Earth HD 209458 system the Kepler mission studies the catalog of known exoplanets the ongoing exploration of exoplanet diversity the study of exoplanetary weather patterns |
| gptkbp:is_studied_for |
its potential atmospheric phenomena
|
| gptkbp:is_studied_in |
by Hubble Space Telescope
by Spitzer Space Telescope |
| gptkbp:is_subject_to |
extensive research on exoplanet atmospheres
|
| gptkbp:is_visible_from |
with telescopes
|
| gptkbp:lighting |
minimal due to stable orbit
used to infer atmospheric properties used to study transits shows periodic dips due to transits |
| gptkbp:located_in |
constellation Pegasus
|
| gptkbp:losses |
significant due to high temperature
significant due to stellar radiation |
| gptkbp:mass |
0.69 times the mass of Jupiter
0.69 Jupiter masses 0.69 times that of Jupiter 1.35 times that of Jupiter |
| gptkbp:module |
0.02 magnitudes
about 0.01 magnitudes about 0.02 magnitudes |
| gptkbp:observational_significance |
important for studying exoplanet atmospheres
|
| gptkbp:orbit_type |
star HD 209458
|
| gptkbp:orbital_altitude |
0.047 AU from its star
|
| gptkbp:orbital_inclination |
about 87 degrees
about 85 degrees |
| gptkbp:orbital_period |
not in resonance with other planets
3.524 days 3.524 hours with its star |
| gptkbp:orbital_plane |
aligned with the star's equator
|
| gptkbp:potential_for_habitability |
none due to extreme conditions
|
| gptkbp:research |
high brightness of host star
transit photometry and spectroscopy collected by Hubble Space Telescope |
| gptkbp:research_importance |
important for studying exoplanet atmospheres
|
| gptkbp:rotation_period |
synchronous with its orbit
|
| gptkbp:route |
about 2.5 hours
|
| gptkbp:season |
not applicable due to close orbit
|
| gptkbp:seasonal_activities |
high due to proximity to star
|
| gptkbp:semi_major_axis |
0.047 AU
|
| gptkbp:stellar_wind_impact |
significant due to proximity to host star
significant due to proximity to star |
| gptkbp:surface |
extreme due to stellar radiation
about 18 m/s² |
| gptkbp:transmission |
about 1.5%
1.7% |
| gptkbp:type |
gptkb:hot_Jupiter
|
| gptkbp:type_of |
gptkb:exoplanet
|
| gptkbp:weather_conditions |
ongoing research on composition and dynamics
|