67 Ophiuchi

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67 Ophiuchi
Ophiuchus constellation map.svg
Red circle.svg
Location of 67 Ophiuchi (circled)
Observation data
Epoch J2000       Equinox J2000
Constellation Ophiuchus
Right ascension 18h 00m 38.71619s [1]
Declination 2° 55 53.6324 [1]
Apparent magnitude  (V)3.93 [2]
Characteristics
Spectral type B5Ib [3]
U−B color index -0.62 [2]
B−V color index +0.03 [2]
Astrometry
Radial velocity (Rv)-5.20 [4]  km/s
Proper motion (μ)RA: +1.15 [1]   mas/yr
Dec.: -9.35 [1]   mas/yr
Parallax (π)2.65 ± 0.54  mas [1]
Distance approx. 1,200  ly
(approx. 380  pc)
Absolute magnitude  (MV)-3.50 [5]
Details
Mass 8.4 [6]   M
Luminosity 2364 [5]   L
Surface gravity (log g)3.03 [7]   cgs
Temperature 15,420 [8]   K
Metallicity [Fe/H]-0.01 [7]   dex
Rotational velocity (v sin i)40 [9]  km/s
Other designations
BD+02°3458, CCDM  J18007+0256A, FK5  677, GC  24509, HIP  88192, HR  6714, HD  164353, SAO  123013, WDS  J18006+0256A
Database references
SIMBAD data

67 Ophiuchi (67 Oph) is a class B5 Ib [3] (blue supergiant) star in the constellation Ophiuchus. Its apparent magnitude is 3.93 [2] and it is approximately 1200 light years away based on parallax. [1] It is considered to be a member of the open cluster Collinder 359 (Melotte 186).

67 Oph has four companions. The closest is a magnitude 13.7 B1 main sequence star at 8.29", designated B. Component C (BD+02°3459) is the brightest close companion, a magnitude 8.1 B2 main sequence star at 54.32". Component D is a magnitude 12.5 star 8.37" from component C. Component E is a magnitude 10.9 star 46.53" from 67 Oph A. [10]

This star was once considered part of the obsolete constellation Taurus Poniatovii, but after the International Astronomical Union officially recognized constellations, it was placed in Ophiuchus. [11]

Related Research Articles

<span class="mw-page-title-main">72 Ophiuchi</span> Binary star system in the constellation Ophiuchus

72 Ophiuchi is a binary star system in the equatorial constellation of Ophiuchus. It is visible to the naked eye as a faint, white-hued point of light with a combined apparent visual magnitude of 3.73. It is located approximately 86.9 light years away from the Sun based on parallax, but is moving closer with a heliocentric radial velocity of -23.9 km/s.

<span class="mw-page-title-main">68 Ophiuchi</span> Binary star system in the constellation Ophiuchus

68 Ophiuchi is a binary star system in the equatorial constellation of Ophiuchus. It is visible to the naked eye as a faint star with an apparent visual magnitude of 4.42. The system is located around 89.69 parsecs (292.5 ly) distant from the Sun, based on parallax, and is drifting further away with a radial velocity of +6 km/s.

Zeta Monocerotis, Latinized from ζ Monocerotis, is a single, yellow-hued star in the constellation Monoceros. It has an apparent visual magnitude of 4.33, which is bright enough to be visible to the naked eye. The annual parallax shift as measured during the Hipparcos mission is 3.08 milliarcseconds, which provides a rough distance estimate of 1,060 light years. It is moving away from the Sun with a radial velocity of +30 km/s.

<span class="mw-page-title-main">HD 102839</span> Star in the constellation Musca

HD 102839 is a class G6Ib star in the constellation Musca. Its apparent magnitude is 4.98 and it is approximately 1,550 light years away from Earth based on parallax.

<span class="mw-page-title-main">45 Ophiuchi</span> Star in the constellation Ophiuchus

45 Ophiuchi is a single star in the equatorial constellation of Ophiuchus, along the southern border with Scorpius. It has the Bayer designation d Ophiuchi, while 45 Ophiuchi is the Flamsteed designation. In the past it had the designation Theta Telescopii. This object is visible to the naked eye as a faint, yellow-white hued star with an apparent visual magnitude of 4.28. It is located approximately 111.6 light years away from the Sun based on parallax. The star is drifting further from the Earth with a heliocentric radial velocity of +38 km/s.

<span class="mw-page-title-main">Sigma Ophiuchi</span> Star in the constellation Ophiuchus

Sigma Ophiuchi, Latinized from σ Ophiuchi, is a single, orange-hued star in the equatorial constellation Ophiuchus. Its apparent visual magnitude is 4.31, which is bright enough to be faintly visible to the naked eye. The annual parallax shift of 3.62 mas as seen from Earth provides a distance estimate of roughly 900 light years. It is moving closer to the Sun with a radial velocity of −28 km/s.

<span class="mw-page-title-main">Upsilon Ophiuchi</span> Multiple star in the constellation Ophiuchus

Upsilon Ophiuchi is a triple star system in the equatorial constellation of Ophiuchus. It has a white hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.62. The distance to this system is approximately 134 light years based on parallax. It is drifting closer with a radial velocity of −30.6 km/s.

<span class="mw-page-title-main">71 Ophiuchi</span> Giant star in the constellation of Ophiuchus

71 Ophiuchi is a single star in the equatorial constellation of Ophiuchus. It is visible to the naked eye as a faint, yellow-hued point of light with an apparent visual magnitude of 4.64. The star is located approximately 273 light years away from the Sun based on parallax, and is moving closer with a radial velocity of −3 km/s.

<span class="mw-page-title-main">41 Ophiuchi</span> Binary star system in the constellation Ophiuchus

41 Ophiuchi is a binary star system in the zodiac constellation of Ophiuchus, and is positioned less than half a degree to the south of the celestial equator. It is visible to the naked eye as a faint, orange-hued point of light with a combined apparent visual magnitude of 4.72. The distance to this system is approximately 202 light years based on parallax.

<span class="mw-page-title-main">Tau Ophiuchi</span> Multiple star in the constellation Ophiuchus

Tau Ophiuchi is a multiple star in the constellation Ophiuchus, approximately 167 light years away based on parallax. Its two main components are two yellow-white main sequence stars, A, of magnitude 5.24 and class F2V, and B, of magnitude 5.94 and class F5V, orbiting each other with a period of 257 years and eccentricity around 0.77. A is reported as a spectroscopic binary with a smaller star of 0.29 solar masses orbiting it every 186 days. An additional component, C, has a separation of 100.8" and magnitude 11.28.

<span class="mw-page-title-main">66 Ophiuchi</span> Star in the constellation Ophiuchus

66 Ophiuchi is a binary variable star in the equatorial constellation of Ophiuchus. It has the variable star designation V2048 Ophiuchi, while 66 Ophiuchi is the Flamsteed designation. This object is visible to the naked eye as a faint, blue-white hued point of light with a baseline apparent visual magnitude of 4.60. It is located approximately 650 light years away from the Sun based on parallax, but is drifting closer with a radial velocity of −13 km/s. The star has a peculiar velocity of 13.1±3.2 km/s relative to its neighbors.

<span class="mw-page-title-main">30 Ophiuchi</span> Star in the constellation Ophiuchus

30 Ophiuchi is a single star in the equatorial constellation of Ophiuchus, and figures 0.99° east of the heart of cluster Messier 10. It is visible to the naked eye as a faint, orange-hued point of light with an apparent visual magnitude of 4.82. The distance to this star is approximately 350 light years based on parallax. Its present motion is, net, one of approaching rather than parting, at −6.7 km/s, its "radial velocity".

<span class="mw-page-title-main">11 Orionis</span> Star in the constellation Orion

11 Orionis is a solitary Ap star in the equatorial constellation of Orion, near the border with Taurus. It is visible to the naked eye with an apparent visual magnitude of 4.65, and it is located approximately 365 light years away from the Sun based on parallax. The star is moving further from the Sun with a heliocentric radial velocity of +16.8 km/s.

<span class="mw-page-title-main">72 Pegasi</span> Binary star system in the constellation Pegasus

72 Pegasi is a binary star system in the northern constellation of Pegasus. It is visible to the naked eye as a faint, orange-hued point of light with a combined apparent visual magnitude of 4.97. The system is located approximately 550 light years away from the Sun, based on parallax, but is drifting closer with a radial velocity of −25 km/s.

<span class="mw-page-title-main">HD 18970</span> Star in the constellation Perseus

HD 18970 is a class G9.5III star in the constellation Perseus. Its apparent magnitude is 4.77 and it is approximately 211 light years away based on parallax.

<span class="mw-page-title-main">HD 20468</span> K-type bright giant star in the constellation Perseus

HD 20468 is a class K2II star in the constellation Perseus. Its apparent magnitude is 4.82 and it is approximately 1180 light years away based on parallax.

<span class="mw-page-title-main">HD 69142</span> Star in the constellation Puppis

HD 69142 is a class K1II-III star in the constellation Puppis. Its apparent magnitude is 4.44 and it is approximately 298 light years away based on parallax.

<span class="mw-page-title-main">HD 68601</span> Star in the constellation Puppis

HD 68601 is a class A7Ib star in the constellation Puppis. Its apparent magnitude is 4.75 and it is approximately 4,200 light years away based on parallax.

<span class="mw-page-title-main">HD 50235</span> Star in the constellation Puppis

HD 50235 is a class K5III star located approximately 811 light years away, in the constellation Puppis. Its apparent magnitude is 4.99. HD 50235 made its closest approach to the Sun 7.8 million years ago, at the distance of 137 light years, during which it had an apparent magnitude of 1.13.

HD 189831 is a class K5III star in the constellation Sagittarius. Its apparent magnitude is 4.77 and it is approximately 366 light years away based on parallax.

References

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  9. Abt, Helmut A.; Levato, Hugo; Grosso, Monica (2002). "Rotational Velocities of B Stars". The Astrophysical Journal. 573 (1): 359–365. Bibcode:2002ApJ...573..359A. doi: 10.1086/340590 .
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Further reading