|
gptkbp:instance_of
|
gptkb:star
|
|
gptkbp:age
|
gptkb:the_Sun
approximately 5 billion years
|
|
gptkbp:apparent_magnitude
|
5.5
6.5
approximately 6.1
|
|
gptkbp:average_temperature
|
approximately 5,200 K
approximately 5000 K
|
|
gptkbp:conducts_research_on
|
stellar evolution studies
|
|
gptkbp:constellation
|
gptkb:Draco
|
|
gptkbp:contains_star
|
other K-type stars
84 Draconis system
|
|
gptkbp:country
|
gptkb:true
84 Draconis b
84 Draconis c
84 Draconis d
|
|
gptkbp:declination
|
+58° 38' 00''
|
|
gptkbp:discovered_by
|
gptkb:W._M._Keck_Observatory
|
|
gptkbp:discovery
|
radial velocity
|
|
gptkbp:discovery_year
|
gptkb:2006
|
|
gptkbp:distance
|
approximately 49 light years
|
|
gptkbp:eccentricity
|
0.1
|
|
gptkbp:financial_stability
|
yes
|
|
gptkbp:has_a_focus_on
|
stellar evolution studies
|
|
gptkbp:has_companion
|
none known
|
|
gptkbp:has_luminosity
|
0.3 solar luminosities
about 0.4 solar luminosities
|
|
gptkbp:has_mechanic
|
-0.2 mas/yr
-0.1 mas/yr
of 0.2 arcseconds/year
|
|
gptkbp:has_radius
|
0.7 solar radii
about 0.7 solar radii
|
|
gptkbp:has_spectral_type
|
K1 V
K4 V
|
|
gptkbp:hosts
|
additional exoplanets
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
84 Draconis
|
|
gptkbp:included
|
the Hipparcos catalog
|
|
gptkbp:is_a
|
gptkb:star
|
|
gptkbp:is_a_member_of
|
the solar neighborhood
|
|
gptkbp:is_a_reference_for
|
stellar navigation
|
|
gptkbp:is_a_source_of
|
stellar wind
|
|
gptkbp:is_a_star_that
|
has been cataloged extensively.
|
|
gptkbp:is_a_subject_of
|
astrophysics research
stellar classification research
|
|
gptkbp:is_approximately
|
49.5 light years away from Earth
|
|
gptkbp:is_associated_with
|
the Draco constellation's mythology
|
|
gptkbp:is_cooler_than_sun
|
gptkb:true
|
|
gptkbp:is_fainter_than_sun
|
gptkb:true
|
|
gptkbp:is_in_catalog
|
gptkb:SIMBAD_Astronomical_Database
gptkb:Hipparcos_Catalog
gptkb:2_MASS
|
|
gptkbp:is_known_to
|
at least one exoplanet
|
|
gptkbp:is_located_in
|
gptkb:Galactic_Halo
the constellation Draco
|
|
gptkbp:is_observed_in
|
various telescopes
|
|
gptkbp:is_older_than_sun
|
gptkb:true
|
|
gptkbp:is_part_of
|
gptkb:Milky_Way_Galaxy
gptkb:Milky_Way_galaxy
the celestial sphere
Galactic disk
the solar system's neighborhood
local stellar population
Draco constellation's star field
|
|
gptkbp:is_studied_for
|
its potential habitability
|
|
gptkbp:is_studied_for_exoplanets
|
yes
|
|
gptkbp:is_surrounded_by
|
a debris disk
|
|
gptkbp:is_used_in_astrophysics
|
yes
|
|
gptkbp:is_visible_from
|
yes
with the naked eye
|
|
gptkbp:known_as
|
HD 19445
|
|
gptkbp:mass
|
0.8 solar masses
about 0.8 solar masses
|
|
gptkbp:metallicity
|
-0.2 dex
about -0.2 dex
|
|
gptkbp:notable_nominees
|
gptkb:future_space_missions
stellar parallax measurement
|
|
gptkbp:orbit_type
|
the exoplanet 84 Draconis b
|
|
gptkbp:orbital_period
|
approximately 4.5 days
|
|
gptkbp:parallax
|
0.066 mas
|
|
gptkbp:performance
|
K-dwarf stars
|
|
gptkbp:research
|
gptkb:true
|
|
gptkbp:right_ascension
|
17h 56m 36.0s
|
|
gptkbp:rotation_period
|
of about 30 days
|
|
gptkbp:scientific_classification
|
a main-sequence star
the Henry Draper catalog
|
|
gptkbp:semi_major_axis
|
0.05 AU
|
|
gptkbp:storage
|
gptkb:true
|
|
gptkbp:targets
|
gptkb:exoplanet
life detection missions
|
|
gptkbp:type
|
K-type main-sequence star
|