Statements (77)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:star
|
| gptkbp:age |
approximately 10 million years
around 5 million years |
| gptkbp:apparent_magnitude |
2.6
-4.5 -5.5 |
| gptkbp:average_temperature |
approximately 20,000 K
approximately 30,000 K |
| gptkbp:constellation |
gptkb:Ophiuchus
|
| gptkbp:contains_star |
gptkb:B0.5_V
B-type star |
| gptkbp:coordinates |
gptkb:Milky_Way
l = 356.5°, b = -2.5° l = 22.5°, b = -10.5° |
| gptkbp:discovery_year |
1830
|
| gptkbp:distance |
approximately 50 light years
trigonometric parallax approximately 50 light-years approximately 30 light-years |
| gptkbp:distance_error |
± 5 light years
|
| gptkbp:distance_from_earth |
30 light-years
|
| gptkbp:exhibition |
gptkb:HD_149757
gptkb:HR_6173 gptkb:SAO_155679 gptkb:SAO_205066 |
| gptkbp:formulation |
not a variable star
non-variable star |
| gptkbp:has_bayer_designation |
gptkb:Zeta_Ophiuchi
|
| gptkbp:has_color |
-0.25
-0.3 |
| gptkbp:has_companion |
gptkb:Zeta_Ophiuchi_B
|
| gptkbp:has_luminosity |
approximately 3,000 times that of the Sun
approximately 10,000 times that of the Sun approximately 50,000 times that of the Sun will evolve into a red supergiant |
| gptkbp:has_mechanic |
-0.12 arcseconds/year
-0.15 arcseconds/year |
| gptkbp:has_radius |
approximately 6 solar radii
|
| gptkbp:has_spectral_type |
gptkb:B0.5_V
B2 V |
| gptkbp:has_title |
gptkb:HIP_81234
|
| https://www.w3.org/2000/01/rdf-schema#label |
Zeta Ophiuchi
|
| gptkbp:is_observed_in |
various telescopes
|
| gptkbp:is_visible_from |
naked eye
|
| gptkbp:lighting |
not available
detected none observed one of the brightest stars in Ophiuchus very bright star |
| gptkbp:losses |
high mass loss rate
approximately 10^-6 solar masses per year |
| gptkbp:mass |
approximately 10 solar masses
young stellar population approximately 16 solar masses significant due to high luminosity |
| gptkbp:max_speed |
strong stellar wind
|
| gptkbp:metallicity |
solar metallicity
approximately solar metallicity |
| gptkbp:notable_feature |
strong stellar wind
|
| gptkbp:orbit_type |
none known
|
| gptkbp:originated_in |
gptkb:main-sequence_star
|
| gptkbp:parallax |
0.065 arcseconds
0.065 mas 0.11 arcseconds |
| gptkbp:research |
observed in various wavelengths
|
| gptkbp:rotation_period |
approximately 3.5 days
rapid rotator |
| gptkbp:spectroscopic_analysis |
conducted
|
| gptkbp:speed |
approximately 20 km/s
|
| gptkbp:stellar_wind_speed |
approximately 2,000 km/s
|
| gptkbp:supernova_potential |
possible future supernova
|
| gptkbp:surface |
approximately 4.0 cm/s²
|
| gptkbp:title |
gptkb:Zeta_Ophiuchi
|
| gptkbp:type |
B-type main-sequence star
blue giant |
| gptkbp:bfsParent |
gptkb:Ophiuchus
|
| gptkbp:bfsLayer |
6
|