|
gptkbp:instance_of
|
gptkb:star
|
|
gptkbp:apparent_magnitude
|
4.5
approximately 3.5
|
|
gptkbp:average_temperature
|
approximately 4,500 K
about 8,500 K
|
|
gptkbp:distance
|
approximately 70 light years from Earth
|
|
gptkbp:distance_from_earth
|
approximately 100 light years
|
|
gptkbp:has_a_proper_motion_in_declination_of
|
-0.020 arcseconds/year
|
|
gptkbp:has_a_proper_motion_in_right_ascension_of
|
-0.045 arcseconds/year
|
|
gptkbp:has_bayer_designation
|
gptkb:Zeta_Hydrae
|
|
gptkbp:has_color
|
1.5
|
|
gptkbp:has_luminosity
|
approximately 30 times that of the Sun
approximately 50 times that of the Sun
|
|
gptkbp:has_mechanic
|
-0.01 arcseconds/year
-0.02 arcseconds/year
|
|
gptkbp:has_radius
|
approximately 10 times that of the Sun
|
|
gptkbp:has_spectral_type
|
gptkb:K3_III
A3 V
|
|
gptkbp:has_title
|
gptkb:Zeta_Hydrae
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Zeta Hydrae
|
|
gptkbp:included
|
Hipparcos catalog
|
|
gptkbp:is_a
|
gptkb:Giant
|
|
gptkbp:is_a_binary_system
|
with a companion star
|
|
gptkbp:is_a_member_of
|
gptkb:Milky_Way_galaxy
|
|
gptkbp:is_a_reference_for
|
stellar classification
|
|
gptkbp:is_a_subject_of
|
amateur astronomers
|
|
gptkbp:is_approximately
|
1.5 times the mass of the Sun
1 billion years old
2.5 times the radius of the Sun
300 million years old
|
|
gptkbp:is_associated_with
|
stellar evolution studies
|
|
gptkbp:is_featured_in
|
astronomical literature
|
|
gptkbp:is_known_for
|
being a red giant star
brightness and visibility
|
|
gptkbp:is_located_in
|
gptkb:Hydra_constellation
the constellation Hydra
|
|
gptkbp:is_observed_in
|
various telescopes
|
|
gptkbp:is_often_described_as
|
the ' Zeta' star of Hydra
|
|
gptkbp:is_often_referenced_in
|
star catalogs
|
|
gptkbp:is_part_of
|
gptkb:Hydra_constellation
gptkb:Hertzsprung-Russell_diagram
gptkb:Milky_Way_galaxy
multiple star system
Galactic plane
southern celestial hemisphere
stellar population of the Milky Way
local stellar neighborhood
|
|
gptkbp:is_studied_for
|
chemical composition
|
|
gptkbp:is_studied_in
|
astrophysics
|
|
gptkbp:is_visible_from
|
gptkb:true
from Earth
|
|
gptkbp:known_as
|
Zeta Hya
|
|
gptkbp:rotation_period
|
about 12 days
|
|
gptkbp:scientific_classification
|
a main-sequence star
|
|
gptkbp:specification
|
gptkb:HD_82328
|
|
gptkbp:system
|
gptkb:true
|
|
gptkbp:targets
|
exoplanet searches
|
|
gptkbp:type_of
|
spectroscopic binary star
|