Statements (206)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:star
|
| gptkbp:age |
gptkb:Alpha_Centauri_A
gptkb:Proxima_Centauri approximately 5 billion years 5 billion years 5.0 billion years some red dwarfs |
| gptkbp:apparent_magnitude |
1.33
+1.33 5.96 |
| gptkbp:average_temperature |
4,850 K
5,200 K approximately 5,300 K 5,300 K 5050 K 5260 K 5200 K 5,100 K 5040 K 5240 K |
| gptkbp:components |
gptkb:Alpha_Centauri
|
| gptkbp:contains_star |
gptkb:Alpha_Centauri_A
gptkb:Proxima_Centauri nan |
| gptkbp:coordinates |
l = 303.3°, b = -16.4°
|
| gptkbp:country |
gptkb:Alpha_Centauri_system
gptkb:Alpha_Centauri_Bc gptkb:Yes possible potentially habitable zone nan |
| gptkbp:discovered_by |
gptkb:unknown
unknown year |
| gptkbp:discovery_year |
1833
1836 |
| gptkbp:distance |
4.37 light years
|
| gptkbp:distance_from_earth |
4.367 light years
4.37 light years |
| gptkbp:eccentricity |
0.52
|
| gptkbp:has_color |
0.8
0.83 +0.83 1.03 |
| gptkbp:has_companion |
gptkb:Alpha_Centauri_A
|
| gptkbp:has_luminosity |
0.445 times that of the Sun
0.45 solar luminosities 0.5 solar luminosities 0.5 times that of the Sun 0.445 solar luminosities |
| gptkbp:has_mechanic |
0.1 arcseconds/year
0.5 arcseconds/year -0.1, -0.2 arcseconds/year |
| gptkbp:has_radius |
0.86 solar radii
0.8 solar radii approximately 0.86 solar radii 0.865 solar radii 0.8 times that of the Sun |
| gptkbp:has_spectral_type |
gptkb:star
K1 V |
| gptkbp:has_type |
K-type main-sequence star
|
| gptkbp:hosts |
exoplanets
|
| https://www.w3.org/2000/01/rdf-schema#label |
Alpha Centauri B
|
| gptkbp:is_approximately |
4.37 light years from Earth
4.37 light years away from Earth 4.37 light years away 0.9 times the mass of the Sun |
| gptkbp:is_associated_with |
gptkb:exoplanet
the search for extraterrestrial life stellar evolution studies Alpha Centauri C (Proxima Centauri) |
| gptkbp:is_atype_of |
gptkb:main-sequence_star
|
| gptkbp:is_binary_with |
gptkb:Alpha_Centauri_A
|
| gptkbp:is_compared_to |
other binary stars
|
| gptkbp:is_considered |
future exploration missions
a potential host for exoplanets a target for interstellar probes a benchmark for K-type stars |
| gptkbp:is_considered_as |
a potential target for interstellar travel
|
| gptkbp:is_explored_in |
gptkb:space_mission
|
| gptkbp:is_in |
gptkb:the_Milky_Way_galaxy
gptkb:Milky_Way_galaxy the Centaurus constellation the solar neighborhood the Galactic neighborhood the Southern Hemisphere sky the southern hemisphere sky |
| gptkbp:is_in_binary_system_with |
gptkb:Alpha_Centauri_A
|
| gptkbp:is_inhabited_by |
no known life forms
|
| gptkbp:is_known_for |
its proximity to Earth
its role in the study of stellar dynamics being part of the closest star system to Earth being part of a triple star system |
| gptkbp:is_known_to |
a lower luminosity than Alpha Centauri A
|
| gptkbp:is_located_in |
gptkb:the_Milky_Way_galaxy
gptkb:Milky_Way_Galaxy gptkb:Milky_Way_galaxy constellation Centaurus |
| gptkbp:is_notable_for |
its binary nature with Alpha Centauri A
|
| gptkbp:is_noted_for |
its potential for hosting habitable planets
its proximity to Earth its brightness in the night sky its potential for hosting life. its potential for hosting exoplanets |
| gptkbp:is_observed_in |
telescopes
various telescopes various wavelengths of light |
| gptkbp:is_often_compared_to |
gptkb:the_Sun
|
| gptkbp:is_one_of |
the closest stars to Earth
closest stars to Earth |
| gptkbp:is_part_of |
gptkb:Alpha_Centauri_star_system
gptkb:Alpha_Centauri_AB_system gptkb:Centauri_system gptkb:Alpha_Centauri_binary_system gptkb:Alpha_Centauri_triple_system gptkb:Alpha_Centauri_system gptkb:Alpha_Centauri_AB gptkb:Alpha_Centauri_A/_B/_C_system gptkb:star gptkb:Milky_Way_galaxy gptkb:the_Local_Group constellation Centaurus triple star system multiple star system the Centaurus constellation the field of astrobiology local stellar neighborhood the study of binary stars the study of nearby stars the Alpha Centauri binary system the Alpha Centauri star system the Alpha Centauri system the Alpha Centauri triple system the Milky Way's stellar neighborhood Alpha Centauri triple star system the binary star system with Alpha Centauri A Alpha Centauri AB binary system the Alpha Centauri system's dynamics the closest stellar system to the Solar System the exploration of the Alpha Centauri system the research on stellar populations the closest star system to the Solar System binary star system with Alpha Centauri A the Alpha Centauri AB binary system the Alpha Centauri star system. the closest binary star system to Earth the closest star system to Earth |
| gptkbp:is_part_of_the_hertzsprung-russell_diagram |
nan
|
| gptkbp:is_part_of_the_solar_system's_neighborhood |
nan
|
| gptkbp:is_part_of_the_stellar_classification_system |
nan
|
| gptkbp:is_related_to |
gptkb:Alpha_Centauri_A
|
| gptkbp:is_similar_to |
gptkb:the_Sun
gptkb:Proxima_Centauri K-type stars other K-type stars |
| gptkbp:is_studied_for |
stellar evolution
its stellar characteristics |
| gptkbp:is_studied_in |
gptkb:astronomy
astrophysics |
| gptkbp:is_used_in |
stellar navigation
navigational astronomy |
| gptkbp:is_visible_from |
gptkb:true
yes the naked eye nan |
| gptkbp:known_as |
gptkb:Alpha_Centauri_B
|
| gptkbp:lighting |
gptkb:Alpha_Centauri_A
gptkb:Proxima_Centauri most K-type stars |
| gptkbp:mass |
0.9 solar masses
0.907 solar masses approximately 0.9 solar masses 0.934 solar masses 0.934 times that of the Sun |
| gptkbp:metallicity |
approximately solar metallicity
[ Fe/ H] = -0.2 [ Fe/ H] = -0.1 |
| gptkbp:named_after |
the Alpha Centauri system
|
| gptkbp:notable_feature |
Second closest star system to the Solar System
|
| gptkbp:orbit_type |
at least one planet
|
| gptkbp:orbital_altitude |
23.6 AU from Alpha Centauri A
|
| gptkbp:orbital_inclination |
about 79 degrees
|
| gptkbp:orbital_period |
not applicable
79.91 years |
| gptkbp:part_of |
gptkb:Alpha_Centauri_system
|
| gptkbp:rotation_period |
35 days
approximately 35 days |
| gptkbp:scientific_classification |
a binary star system
a K dwarf star |
| gptkbp:size |
gptkb:the_Sun
gptkb:Alpha_Centauri_A |
| gptkbp:surface |
4.5 m/s²
|
| gptkbp:system |
gptkb:Alpha_Centauri_A
gptkb:true |
| gptkbp:targets |
gptkb:exoplanet
gptkb:interstellar_travel |
| gptkbp:type |
gptkb:main-sequence_star
K-type main-sequence star |
| gptkbp:type_of |
gptkb:main-sequence_star
K-type main-sequence star |
| gptkbp:bfsParent |
gptkb:Alpha_Centauri_star_system
gptkb:Centaurus gptkb:the_GTVA gptkb:Alpha_Centauri gptkb:Alpha_Centauri_system gptkb:Bright_Star |
| gptkbp:bfsLayer |
5
|