Statements (65)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:star
|
| gptkbp:age |
gptkb:Sun
approximately 1.5 billion years approximately 3 billion years |
| gptkbp:apparent_magnitude |
4.4
4.25 |
| gptkbp:average_temperature |
approximately 4,800 K
approximately 5,200 K |
| gptkbp:composed_of |
primarily hydrogen and helium
|
| gptkbp:contains_star |
61 Ophiuchi B
|
| gptkbp:coordinates |
l = 16.5°, b = -25.0°
|
| gptkbp:discovery_year |
1830
|
| gptkbp:distance |
16.4 light years
|
| gptkbp:distance_from_earth |
16.4 light years
|
| gptkbp:has_color |
1.1
+0.83 |
| gptkbp:has_companion |
none known
|
| gptkbp:has_historical_significance |
one of the nearest stars
|
| gptkbp:has_luminosity |
approximately 50 times that of the Sun
0.4 solar luminosities |
| gptkbp:has_mechanic |
-0.12 arcseconds/year
-0.15 arcseconds/year +0.15 arcseconds/year |
| gptkbp:has_radius |
approximately 10 solar radii
0.75 solar radii |
| gptkbp:has_spectral_type |
K1 V
K1 III |
| gptkbp:has_title |
61 Oph
|
| https://www.w3.org/2000/01/rdf-schema#label |
61 Ophiuchi
|
| gptkbp:included |
star catalogs
|
| gptkbp:is_considered_as |
a potential target for exoplanet searches
|
| gptkbp:is_inhabited_by |
no known planets
|
| gptkbp:is_known_for |
being a nearby star
|
| gptkbp:is_located_at |
distance of 16.4 light years
|
| gptkbp:is_located_in |
constellation Ophiuchus
|
| gptkbp:is_noted_for |
its proximity to Earth
its stable luminosity |
| gptkbp:is_observed_in |
amateur astronomers
|
| gptkbp:is_part_of |
gptkb:Milky_Way_Galaxy
solar neighborhood constellation Ophiuchus stellar associations local stellar population |
| gptkbp:is_similar_to |
gptkb:Alpha_Centauri_A
|
| gptkbp:is_studied_in |
astrophysics
|
| gptkbp:is_used_in |
stellar navigation
|
| gptkbp:is_visible_from |
gptkb:Earth
gptkb:true visible in southern hemisphere |
| gptkbp:lighting |
moderate brightness
|
| gptkbp:mass |
approximately 2.5 solar masses
0.8 solar masses |
| gptkbp:metallicity |
-0.2 dex
[ Fe/ H] = -0.2 |
| gptkbp:orbital_period |
not applicable
|
| gptkbp:parallax |
0.199 arcseconds
0.060 arcseconds |
| gptkbp:rotation_period |
approximately 30 days
|
| gptkbp:scientific_classification |
gptkb:star
|
| gptkbp:speed |
-20 km/s
|
| gptkbp:surface |
4.5 (cgs)
|
| gptkbp:system |
gptkb:true
false |
| gptkbp:type_of |
gptkb:main-sequence_star
gptkb:Giant |