Statements (71)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:star
|
| gptkbp:age |
approximately 5 billion years
5 billion years |
| gptkbp:apparent_magnitude |
5.25
+3.5 5.57 |
| gptkbp:area |
1.2 solar radii
approximately 1.2 solar radii |
| gptkbp:average_temperature |
approximately 5,800 K
5,800 K |
| gptkbp:constellation |
gptkb:mythological_figure
|
| gptkbp:controls |
single star system
|
| gptkbp:depicted_in |
gptkb:theorem
visible to the naked eye |
| gptkbp:distance |
5.5
approximately 120 light years |
| gptkbp:exhibition |
various astronomical databases
|
| gptkbp:exhibits |
orbital motion
|
| gptkbp:focuses_on |
stellar population studies
|
| gptkbp:has_color |
0.6
|
| gptkbp:has_friend |
none known
|
| gptkbp:has_luminosity |
1.5 solar luminosities
approximately 1.5 solar luminosities fainter than the primary |
| gptkbp:has_role |
stellar evolution studies
|
| gptkbp:has_setting |
HIP 14600
|
| gptkbp:has_spectral_type |
G5 V
|
| gptkbp:has_team |
-0.020 arcseconds/year
0.15 arcseconds/year -0.045 arcseconds/year |
| gptkbp:hosts |
exoplanets
|
| https://www.w3.org/2000/01/rdf-schema#label |
21 Herculis
|
| gptkbp:includes |
Hipparcos catalog
|
| gptkbp:is_a_site_for |
habitable zone studies
|
| gptkbp:is_a_source_of |
stellar wind
|
| gptkbp:is_approximately |
139 light years away from Earth
|
| gptkbp:is_associated_with |
stellar formation regions
|
| gptkbp:is_divided_into |
about 10 AU
|
| gptkbp:is_known_for |
stellar characteristics
|
| gptkbp:is_observed_in |
various wavelengths
|
| gptkbp:is_part_of |
gptkb:Hercules_constellation
gptkb:Milky_Way_galaxy Hercules constellation family Galactic disk Hercules constellation group local stellar population Hercules constellation's star catalog Hercules constellation's structure solar neighborhood's dynamics |
| gptkbp:is_studied_in |
gptkb:observatory
|
| gptkbp:leadership |
HD 19445
|
| gptkbp:located_in |
constellation Hercules
|
| gptkbp:marketed_as |
gptkb:21_Herculis
|
| gptkbp:mass |
approximately 1.1 solar masses
|
| gptkbp:members |
solar neighborhood
|
| gptkbp:metallicity |
solar metallicity
0.1 solar metallicity |
| gptkbp:notable_inductees |
planetary system formation
|
| gptkbp:number |
Gl 1945
|
| gptkbp:operating_system |
two distinct stellar types
|
| gptkbp:orbital_period |
approximately 25 days
|
| gptkbp:parallax |
0.003 arcseconds
0.027 arcseconds |
| gptkbp:subject |
astrophysics research
stellar dynamics research stellar astrophysics. |
| gptkbp:targets |
gptkb:future_space_missions
exoplanet studies |
| gptkbp:type |
gptkb:star
|
| gptkbp:type_of |
gptkb:star
|
| gptkbp:year_created |
gptkb:unknown
|