ʻOumuamua
ʻOumuamua (Hawaiian: [first messenger arriving from afar] Error: {{Lang}}: text has italic markup (help))[1] is an object from another star system that visited our solar system. Its official name is 1I/2017 U1.
ʻOumuamua is the first interstellar object that we know has passed through our solar system.[2] Oumuamua was first discovered on 19 October 2017 using the Pan-STARRS1 telescope at the Haleakala Observatory in Hawaii.[3]
Its appearance is long and narrow
ʻOumuamua Media
Hyperbolic trajectory of ʻOumuamua through the inner Solar System with the Sun at the focus
- Oumuamua magnitude 2015-2019.png
ʻOumuamua had faded to 34th magnitude by 2020.
- Oumuamua-skypath.png
Seen from Earth, the apparent trajectory makes annual retrograde loops in the sky, with its origin in Lyra, temporarily moving south of the ecliptic between 2 September and 22 October 2017, and moving northward again towards its destination in Pegasus.
- Oumuamua-solar system-ecliptic-normals.png
ʻOumuamua's hyperbolic trajectory over the Solar System
Animation of ʻOumuamua passing through the Solar System
Light curve from 25 to 27 October 2017 with dotted line from a model with 10:1 elongation
Color composite image taken on 27 October 2017 using the Gemini South telescope
References
- ↑ Gareth V. Williams (November 6, 2017). "MPEC 2017-V17: New Designation Scheme for Interstellar Objects". minorplanetcenter.net.
- ↑ Karen Northon (June 27, 2018). "Our Solar System's first known interstellar object gets unexpected speed boost". nasa.gov.
- ↑ Karen J. Meech; et al. (November 1, 2017). "Discovery and characterization of the first known interstellar object" (PDF). Nature.
