| Discovery | |
|---|---|
| Discovered by | Pan-STARRS |
| Discovery site | Haleakala Obs. |
| Discovery date | 10 March 2016 (discovery: first observation only) |
| Designations | |
| MPC designation | 2016 EU85 |
| Minor planet category | |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 3 | |
| Observation arc | 1.42 yr (518 days) |
| Aphelion | 2.7400 AU |
| Perihelion | 0.9561 AU |
| Semi-major axis | 1.8480 AU |
| Eccentricity | 0.4826 |
| Orbital period (sidereal) | 2.51 yr (918 days) |
| Mean anomaly | 303.30° |
| Mean motion | 0° 23 32.28 / day |
| Inclination | 2.5966° |
| Longitude of ascending node | 359.44° |
| Argument of perihelion | 23.527° |
| Earth MOID | 0.0065 AU (2.5 LD) |
| Physical characteristics | |
| Dimensions | 0.4 km (est. at 0.24) |
| Absolute magnitude (H) | 19.2 |
2016 EU85 is an asteroid, classified as near-Earth object and potentially hazardous asteroid of the Apollo group, approximately 400 meters in diameter. It was first observed on 10 March 2016, by the Pan-STARRS survey at Haleakala Observatory, Hawaii, United States.
Orbit
2016 EU85 orbits the Sun at a distance of 1.0–2.7 AU once every 2 years and 6 months (918 days). Its orbit has an eccentricity of 0.48 and an inclination of 3° with respect to the ecliptic. It has an Earth minimum orbital intersection distance of 0.0065 AU (972,000 km) which translates into 2.5 lunar distances.
Torino scale
It is currently rated at level 0 after being rated at level 1 on the Torino Scale by the NEODyS system. It was upgraded to level 1 on 25 March 2016 but downgraded on 30 March 2016. On the Sentry system it did not cross the threshold between the two levels, due to a lower computed impact probability. The asteroid is estimated to have a diameter of 440 metres (1,440 ft; 480 yd). The observation arc was then increased to of 78 days.
When rated at Torino Scale level 1, there was a 0.0012% chance or a 1 in 83,000 chance of the asteroid colliding with the Earth, corresponding to a 99.9988% chance the asteroid will miss the Earth. 2016 EU85 had been observed 14 times at the observatories Mauna Kea (568), Apache Point (705), Pan-STARRS 1 Haleakala (F51) and Magdalena Ridge Observatory (H01).
2016 EU85 was subsequently removed from the list of possible impactors thanks to prediscovery observations found in the Pan-STARRS archive.
Observations
2016 EU85 was observed with the Spacewatch 1.8-meter telescopes and also the Vatican Advanced Technology Telescope.
See also
References
- ^ "JPL Small-Body Database Browser: (2016 EU85)" (2017-06-14 last obs.). Jet Propulsion Laboratory. Retrieved 2 August 2017.
- ^ "2016 EU85". Minor Planet Center. Retrieved 2 August 2017.
- "Asteroid Size Estimator". CNEOS/JPL. Retrieved 1 August 2017.
- "CRT Page". www.hohmanntransfer.com. Archived from the original on 5 October 2007. Retrieved 28 April 2016.
- "NEODyS". newton.dm.unipi.it. Retrieved 28 April 2016.
- "2016-03-15 Tracking News". www.hohmanntransfer.com. Retrieved 28 April 2016.
- http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2016+EU85
- "Risky Asteroid 2016 EU85 – Astrometrics". The Spaceport V5.5. Retrieved 28 April 2016.
- Network, Las Cumbres Observatory Global Telescope. "2016 EU85 details | LCOGT NEOx". lcogt.net. Retrieved 28 April 2016.
- "MPEC 2016-E142: 2016 EU85". www.minorplanetcenter.org. Retrieved 28 April 2016.
- "2016-03-31 Tracking News". www.hohmanntransfer.com. Archived from the original on 10 April 2016.
- "2016-04-08 Tracking News". www.hohmanntransfer.com. Archived from the original on 19 November 2018.
External links
- 2016 EU85 at NeoDyS-2, Near Earth Objects—Dynamic Site
- 2016 EU85 at ESA–space situational awareness
- 2016 EU85 at the JPL Small-Body Database
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