Asteroid
'Oumuamua
'Oumuamua (A/2017 U1)
Orbital elements
- Semi-major axis
- -1.272 AU
- Eccentricity
- 1.2011
- Inclination
- 122.74°
- Perihelion
- 0.256 AU
- Longitude of ascending node
- 24.6°
- Argument of periapsis
- 241.81°
- Epoch · J2000
- 2458080.5
- Orbit class · HYA
- Hyperbolic asteroid
- Earth MOID · 37.3 LD
- 0.0958 AU
Orbit quality
- Observations used
- 207
- Data arc
- 80 days
- First observed
- 14 October 2017
- Last observed
- 2 January 2018
- Residual RMS
- 0.44 ″
- Solution · Davide Farnocchia
- 26 June 2018
Physical properties
- Rotation period
- 7.94 hours
Visual & observation
- Absolute magnitude (H)
- 22.08
Discovery & classification
Also known as 2017 U1 · A/2017 U1
Named
Sources
- visual properties: JPL SBDB (lookup)
- physical properties: JPL SBDB (lookup)
- orbital elements: JPL SBDB