- Omicron Herculis
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Omicron Herculis (o Her, o Herculis) is a multiple star system in the constellation Hercules. It has the traditional name Atia and the Flamsteed designation 103 Herculis.
Contents
Properties
Omicron Herculis is a B9.5V star approximately 106 pc from the Earth. It has an apparent magnitude of 3.83, and an absolute magnitude of -1.29. The star burns bluish-white, and has a luminosity approximately 180x as bright as the sun. Omicron Herculis is 3.32 solar masses.
Omicron Herculis is an eruptive variable of the Gamma Cassiopeia class, which are rapidly rotating B-class stars with mass outflow.
Omicron Herculis is both a spectroscopic and an interferometric binary star with a separation of 0.1 arcsec.
Brightest star
Omicron Hercules is notable for being the direction in which the Sun's proper motion is directed. It will eventually become the brightest star in the sky in approximately 3 million years from today, at -0.4, slightly less bright than Canopus.
Star system
Starbox Info
- Omicron Herculis, o Her
- RA 18,07,32.60
- DEC +28.45.45.0
- B9.5Ve
- 0.03 B/V
- Gamma Cassiopeia Variable
- 0.001 RA Proper Motion
- 0.009 DEC Proper Motion
- 0.005 arcsec Parallax
- distance of 106 pc
- -1.30 Absolute magnitude
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- mass=3.2 Sol
- radius=2.5 Sol
- luminosity=180 Sol
- temperature=11,500
- metal=?
- rotational_velocity=134 km/s
- age=?
See also
- Lists of stars in the constellation Hercules
- Spectral type B
Notes
References
External links
http://www.alcyone.de/SIT/bsc/HR6779.html
Stars of Hercules Bayer α (Rasalgethi) • β (Kornephoros) • γ • δ (Sarin) • ε (Cujam) • ζ (Rutilicus) • η • θ • ι • κ (Marfik) • λ (Maasym) • μ • ν • ξ • ο (Atia) • π • ρ • σ • τ • υ • φ • χ • ω (Kajam) • b • c • d • e • f • g • h • i • k • l • m • n • o • q • r • s • t • u • w • x • y • z • AFlamsteed 1 (χ) • 2 • 4 • 5 (r) • 6 (υ) • 7 (κ, Marfik) • 8 • 9 • 10 • 11 (φ) • 13 • 14 • 16 • 19 • 20 (γ) • 21 (o) • 22 (τ) • 24 (ω, Kajam) • 25 • 27 (β, Kornephoros) • 28 (n) • 29 (h) • 30 (g) • 31 • 32 • 33 • 34 • 35 (σ) • 36 • 37 (m) • 38 • 39 • 40 (ζ, Rutilicus) • 41 • 42 • 43 (i) • 44 (η) • 45 (l) • 46 • 47 (k) • 48 • 49 • 50 • 51 • 52 • 53 • 54 • 56 • 57 • 58 (ε, Cujam) • 59 (d) • 60 • 61 • 63 • 64 (α, Rasalgethi) • 65 (δ, Sarin) • 67 (π) • 68 (u) • 69 (e)• 70 • 72 (w) • 73 • 74 • 75 (ρ) • 76 (λ, Maasym) • 77 (x) • 78 • 79 • 82 (y) • 83 • 84 • 85 (ι) • 86 (μ) • 87 • 88 (z) • 89 • 90 (f) • 91 (θ) • 92 (ξ) • 93 • 94 (ν) • 95• 96 • 97 • 98 • 99 (b) • 100 • 101 • 102 • 103 (ο, Atia) • 104 (A) • 105 • 106 • 107 (t) • 108 • 109 • 110 • 111 • 112 • 113Nearby WISE 1738+2732 • WISE 1741+2553Categories:- Hercules constellation
- Bayer objects
- Flamsteed objects
- Stars with proper names
- B-type dwarfs
- Omicron Herculis, o Her
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