Orion Arm
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- For an article on the website, see Orion's Arm
The Orion Arm (also known as the Local Arm or Orion Spur; labeled "0") is a minor spiral arm of the Milky Way galaxy. The Earth's solar system may be found close to the inner rim of the Local Arm, in the Local Bubble, 8.0 ± 0.5 kpc from the galactic center. This arm gets its name from its proximity to the stars in the Orion constellation. The Local Arm is located between the Sagittarius Arm (facing the galactic center) and the Perseus Arm (towards the outer, Cygnus Arm). It is unknown whether the Local Arm is a branch of the Perseus or Sagittarius arm.
A number of Messier objects are found in the Local Arm: M6, M7, M23, M25, M27, M29, M34, M35, M39, M40, M41, M42, M43, M44, M45, M46, M47, M48, M50, M57, M67, M73, M76, M78, M93, M97.
See also
External links
- [Galactic Structure, Galactic Rotation Curve and Measurements on the M31 galaxy]
- http://skyandtelescope.com/mm_images/6829.jpg
| Milky Way |
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Galactic Core: Center of the Milky Way Spiral Arms: Carina Arm | Crux Arm | Cygnus Arm | Norma Arm | Orion Arm | Perseus Arm | Sagittarius Arm | Scutum Arm |
| Location: Universe | Virgo Supercluster | Local Group |
| Satellite galaxies: Canis Major Dwarf Galaxy | Carina Dwarf | Draco Dwarf | Fornax Dwarf | Large Magellanic Cloud | Leo I | Leo II | Sag DEG | Sculptor Dwarf Galaxy | Sextans Dwarf | Small Magellanic Cloud | Virgo Stellar Stream | Ursa Minor Dwarf |
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