Statements (87)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:star
|
| gptkbp:age |
1 billion years
approximately 1 billion years |
| gptkbp:apparent_magnitude |
5.25
|
| gptkbp:average_temperature |
approximately 4,800 K
|
| gptkbp:contains_star |
99 Ophiuchi B
99 Ophiuchi C |
| gptkbp:distance |
approximately 16.5 light years
|
| gptkbp:has_bayer_designation |
β Ophiuchi
|
| gptkbp:has_color |
+0.9
|
| gptkbp:has_henry_draper_designation |
gptkb:HD_149404
|
| gptkbp:has_luminosity |
0.4 solar luminosities
about 0.4 solar luminosities |
| gptkbp:has_mechanic |
-0.12 arcseconds/year
0.5 arcseconds/year -0.15 arcseconds/year |
| gptkbp:has_radius |
about 0.7 solar radii
0.75 solar radii |
| gptkbp:has_spectral_type |
K3 V
|
| gptkbp:has_title |
gptkb:99_Ophiuchi
HIP 81034 |
| https://www.w3.org/2000/01/rdf-schema#label |
99 Ophiuchi
|
| gptkbp:included |
Hipparcos catalog
star catalogs the 2 MASS catalog |
| gptkbp:is_a |
gptkb:main-sequence_star
|
| gptkbp:is_approximately |
16.5 light years away from Earth
|
| gptkbp:is_associated_with |
stellar formation regions
the Ophiuchus star cluster |
| gptkbp:is_considered_as |
a potential target for exoplanet searches
a potential host for exoplanets |
| gptkbp:is_considered_to_be |
a relatively old star
|
| gptkbp:is_inhabited_by |
hypothetical planets
|
| gptkbp:is_known_for |
its binary nature
being a binary star system |
| gptkbp:is_known_to |
a low metallicity
|
| gptkbp:is_located_at |
Declination -24° 22′ 36″
Right Ascension 17h 24m 20.0s |
| gptkbp:is_located_in |
gptkb:Milky_Way_Galaxy
constellation Ophiuchus |
| gptkbp:is_notable_for |
its proximity to Earth
|
| gptkbp:is_noted_for |
its binary nature
its stable brightness its relative proximity to Earth its stable spectral characteristics its relatively low brightness compared to other stars. |
| gptkbp:is_observed_in |
stellar dynamics
optical wavelengths space telescopes infrared wavelengths ground-based telescopes |
| gptkbp:is_part_of |
gptkb:Milky_Way_Galaxy
multiple star system constellation Ophiuchus the local stellar population the solar neighborhood the local galactic neighborhood the Galactic disk the Ophiuchus constellation family the Ophiuchus constellation group the Ophiuchus star cluster the Ophiuchus star field the solar system neighborhood the Milky Way's thin disk |
| gptkbp:is_referenced_in |
astronomical literature
|
| gptkbp:is_studied_for |
stellar dynamics
stellar evolution stellar classification purposes |
| gptkbp:is_studied_in |
astrophysics
|
| gptkbp:is_used_in |
stellar navigation
stellar evolution studies |
| gptkbp:is_visible_from |
gptkb:true
yes northern hemisphere southern hemisphere |
| gptkbp:mass |
0.8 solar masses
about 0.8 solar masses |
| gptkbp:measures |
astrometric methods
|
| gptkbp:metallicity |
[ Fe/ H] = -0.2
|
| gptkbp:number |
Gl 123.1
|
| gptkbp:orbital_period |
approximately 100 years
approximately 1000 days |
| gptkbp:parallax |
0.198 arcseconds
|
| gptkbp:scientific_classification |
gptkb:star
K-type main-sequence star a binary star system |
| gptkbp:system |
gptkb:true
|