74 Orionis

Last updated
74 Orionis
Observation data
Epoch J2000       Equinox J2000
Constellation Orion
Right ascension 06h 16m 26.61878s [1]
Declination 12° 16 19.7909 [1]
Apparent magnitude  (V)5.04 [2]
Characteristics
Evolutionary stage main sequence
Spectral type F5V [3]
U−B color index -0.02 [4]
B−V color index +0.42 [4]
Astrometry
Radial velocity (Rv)+9.17 [5]  km/s
Proper motion (μ)RA: +83.102 [1]   mas/yr
Dec.: +186.263 [1]   mas/yr
Parallax (π)51.1930 ± 0.1907  mas [1]
Distance 63.7 ± 0.2  ly
(19.53 ± 0.07  pc)
Absolute magnitude  (MV)3.62 [2]
Details
Mass 1.39 [6]   M
Radius 1.3 [7]   R
Luminosity 3.02 [2]   L
Surface gravity (log g)4.34 [6]   cgs
Temperature 6,595 [6]   K
Metallicity [Fe/H]-0.03 [2]   dex
Rotational velocity (v sin i)18.8 [8]  km/s
Age 2.316 [6]   Gyr
Other designations
k Ori, 74 Ori, BD+12°1084, FK5  1169, GC  8033, GJ  9207, HD  43386, HIP  29800, HR  2241, SAO  95476, CCDM J06165+1216A, WDS J06164+1216A, LTT  11823 [9]
Database references
SIMBAD data

74 Orionis is a single [10] star in the equatorial constellation of Orion. It has the Bayer designation k Orionis, while 74 Orionis is the Flamsteed designation. This object is visible to the naked eye as a faint, yellow-white hued point of light with an apparent visual magnitude of 5.04. [2] It is located at a distance of 64  light years from the Sun based on parallax, [1] and is drifting further away with a radial velocity of +9 km/s. [5] The star has a relatively high proper motion, traversing the celestial sphere at the rate of 0.204  arc seconds per annum. [11]

This object is an ordinary F-type main-sequence star with a stellar classification of F5V. [3] It is an estimated 2.3 [6]  billion years old and is spinning with a projected rotational velocity of 18.8 km/s. [8] The star has 1.4 [6] times the mass of the Sun and 1.3 [7] times the Sun's radius. Metallicity is near solar, [2] which indicates it has a Sun-like abundances of elements. The star is radiating three [2] times the luminosity of the Sun from its photosphere at an effective temperature of 6,595 K. [6]

74 Orionis has two visual companions: component B, with magnitude 12.5 and separation 32.1", and C, with magnitude 9.0 and separation 195.5". [12]

Related Research Articles

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<span class="mw-page-title-main">Iota Tauri</span> Double star in the constellation Taurus

Iota Tauri, Latinized from ι Tauri, is a white-hued star in the zodiac constellation Taurus and an outlying member of the Hyades star cluster. It is visible to the naked eye with an apparent visual magnitude of 4.62, and is located at an estimated distance of about 173 light years based upon parallax measurements. The star is moving away from the Sun with a radial velocity of +38 km/s.

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

π Persei, Latinized as Pi Persei, is a single star in the northern constellation of Perseus. It has the traditional name Gorgonea Secunda, the second of three Gorgons in the mythology of the hero Perseus. This star has a white hue and is faintly visible to the naked eye with an apparent visual magnitude of +4.7. It is located at a distance of approximately 303 light years from the Sun based on parallax, and is moving further away with a radial velocity of +14 km/s.

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

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<span class="mw-page-title-main">15 Orionis</span> Star system in the constellation Orion

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<span class="mw-page-title-main">44 Ophiuchi</span> Star in the constellation Ophiuchus

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<span class="mw-page-title-main">32 Orionis</span> Triple star system in the constellation Orion

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<span class="mw-page-title-main">56 Orionis</span> In the constellation Orion

56 Orionis is a single, variable star in the equatorial constellation of Orion. It has an orange hue and is faintly visible to the naked eye with an apparent visual magnitude that fluctuates around 4.76. The star is located at a distance of approximately 1,130 light years from the Sun based on parallax. It is drifting further away with a radial velocity of +11 km/s. The star has a peculiar velocity of 19.0+2.9
−3.1
 km/s
relative to its neighbors, and may be a runaway star.

<span class="mw-page-title-main">49 Orionis</span> Star in the constellation Orion

49 Orionis is a single star in the equatorial constellation of Orion. It has the Bayer designation d Orionis, while 49 Orionis is the Flamsteed designation. This object is visible to the naked eye as a faint, white-hued star with an apparent visual magnitude of 4.80. It is located 141 light years away from the Sun based on parallax, but is drifting closer with a radial velocity of −5 km/s.

<span class="mw-page-title-main">51 Orionis</span> Star in the constellation of Orion

51 Orionis is a single star in the equatorial constellation of Orion. It has the Bayer designation b Orionis, while 51 Orionis is the Flamsteed designation. This object is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of 4.90. It is located approximately 299 light-years away from the Sun based on parallax, and is drifting further away with a radial velocity of +88 km/s.

<span class="mw-page-title-main">Nu Pegasi</span> Star in the constellation Pegasus

ν Pegasi, Latinized as Nu Pegasi is a single star in the northern constellation of Pegasus. It is an orange-hued star that is faintly visible to the naked eye with an apparent visual magnitude of 4.84. The star is located approximately 261 light years away based on parallax, but is drifting closer with a radial velocity of −19 km/s.

<span class="mw-page-title-main">Rho Pegasi</span> Star in the constellation Pegasus

Rho Pegasi, Latinized from ρ Pegasi, is a star in the northern constellation of Pegasus, near the southern constellation boundary with Pisces. This is a probable astrometric binary system, as determined by changes to the proper motion of the visible component. It has a white hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.90. The system is located at a distance of approximately 274 light years from the Sun based on parallax, but it is drifting closer with a radial velocity of −10.6 km/s.

<span class="mw-page-title-main">54 Persei</span> Star in the constellation Perseus

54 Persei is a single star in the northern constellation of Perseus. It is visible to the naked eye as a faint, yellow-hued star with an apparent visual magnitude of 4.93. The star is located approximately 220 light years away based on parallax, but is drifting closer with a radial velocity of −27 km/s.

<span class="mw-page-title-main">32 Persei</span> Star in the constellation Perseus

32 Persei is a single star located 149 light years away from the Sun in the northern constellation of Perseus. It has the Bayer designation of l Persei, while 32 Persei is the Flamsteed designation. This object is visible to the naked eye as a faint, white-hued star with an apparent visual magnitude of 4.96. It is moving closer to the Earth with a heliocentric radial velocity of −9 km/s, and is a member of the Sirius supercluster: a stream of stars that share a common motion through space.

<span class="mw-page-title-main">43 Persei</span> Spectroscopic binary star system in the constellation Perseus

43 Persei is a binary star system in the northern constellation Perseus. It is visible to the naked eye as a dim, yellow-white hued star with an apparent visual magnitude of 5.28. The system is located around 38.5 parsecs (125.4 ly) distant from the Sun, based on parallax.

<span class="mw-page-title-main">Iota Microscopii</span> Star in the constellation Microscopium

ι Microscopii, Latinized as Iota Microscopii, is a suspected astrometric binary star system in the southern constellation of Microscopium, near the southern constellation border with Indus. It is visible to the naked eye as a dim, yellow-white hued point of light with an apparent visual magnitude of 5.11. This object is 121 light years from the Sun based on parallax, but is drifting closer with a radial velocity of −14 km/s.

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