(137108) 1999 AN10
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 | |
| Discovery and designation | |
|---|---|
| Discovered by | LINEAR |
| Discovery date | January 13, 1999 |
| Designations | |
| MPC designation | (137108) 1999 AN10 |
| Minor planet category | Apollo asteroid |
| Orbital characteristics[1] | |
|
Epoch 2013-Apr-18 JD 2456400.5 | |
| Aphelion | 2.2787 AU (Q) |
| Perihelion | 0.63880 AU (q) |
| Semi-major axis | 1.4587 AU (a) |
| Eccentricity | 0.56209 |
| Orbital period | 1.76 a |
| Mean anomaly | 347.23° (M) |
| Inclination | 39.931° |
| Longitude of ascending node | 314.41° |
| Argument of perihelion | 268.32° |
| Physical characteristics | |
| Dimensions | 800 - 1800 m[2][3] |
| Mass | ~2.9×1012 kg[4] |
| Equatorial escape velocity | ~2.8 km/h[4] |
| Absolute magnitude (H) | 17.8[1] |
|
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(137108) 1999 AN10 is an Apollo near-Earth asteroid (NEA) discovered by LINEAR on January 13, 1999.[5]
On August 7, 2027, this NEA will pass within 388,960 km (233,376 miles, 0.0026 AU; ~1 lunar distance) of the Earth.[6][7][8][9] During the close approach, the asteroid should peak at about apparent magnitude 7.3,[10] and will be visible in binoculars.
1999 AN10 has a well determined orbit with an observation arc of 58 years.[1] It was found by Andreas Doppler and Arno Gnädig in precovery images from 1955.[1] When 1999 AN10 only had an observation arc of 123 days, there was a 1 in 10 million chance that it could return on an impact trajectory in 2039.[11]
References
- ↑ 1.0 1.1 1.2 1.3 "JPL Small-Body Database Browser: 137108 (1999 AN10)". Retrieved 2013-03-10.
- ↑ "137108 1999 AN10". The Near-Earth Asteroids Data Base at E.A.R.N. Retrieved 2008-01-31.
- ↑ Absolute magnitude to diameter conversion table
- ↑ 4.0 4.1 assume radius of 0.650 km; volume of a sphere * assume density of 2.6g/cm³ (though it could be a loose rubble pile) yields a mass of 2.99e12 kg and an escape velocity of 2.82 km/h.
- ↑ Hannu, Karttunen; Vilppu, Piirola (1999). Astrophysics with the NOT: Proceedings of the conference held in Turku on August 12–15, 1998. University of Turku. p. 270. ISBN 951-29-1615-0.
- ↑ Piero Sicoli, Francesco Manca. "Sormano Astronomical Observatory: Table of Next Closest Approaches to the Earth by Asteroids". Astronomical Observatory of Brera. Archived from the original on 1 December 2007. Retrieved 2008-01-31.
- ↑ "JPL Close-Approach Data: 137108 (1999 AN10)". 2006-08-04 last obs (arc=51.5 years). Retrieved 2011-10-17.
- ↑ "NEODys (137108) 1999AN10". Department of Mathematics, University of Pisa, ITALY. Archived from the original on 2009-04-18. Retrieved 2008-01-31.
- ↑ "MPEC 1999-N21: 1999 AN10". IAU: Minor Planet Center. 1999 July 12, 21:23. Retrieved 2008-01-31.
- ↑ "1999AN10 Ephemerides for 7 Aug 2027". NEODyS (Near Earth Objects - Dynamic Site). Retrieved 2011-10-16.
- ↑ Paul W. Chodas, Research Scientist, Near Earth Object Program Office, Jet Propulsion Laboratory (1999-05-18). "The Continuing Story Of Asteroid 1999 AN10". Archived from the original on 26 October 2010. Retrieved 2010-10-22.
External links
- Orbital simulation from JPL (Java) / Horizons Ephemeris
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