(137108) 1999 AN10
| Discovery | |
|---|---|
| Discovered by | LINEAR |
| Discovery date | 7 January 1999 |
| Designations | |
| (137108) 1999 AN10 | |
| Apollo asteroid | |
| Orbital characteristics[1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 21222 days (58.10 yr) |
| Aphelion | 2.2787 AU (340.89 Gm) (Q) |
| Perihelion | 0.63875 AU (95.556 Gm) (q) |
| 1.4587 AU (218.22 Gm) (a) | |
| Eccentricity | 0.56212 (e) |
| 1.76 yr (643.51 d) | |
| 186.69° (M) | |
| 0° 33m 33.948s / day (n) | |
| Inclination | 39.932° (i) |
| 314.41° (Ω) | |
| 268.30° (ω) | |
| Earth MOID | 0.000708904 AU (106,050.5 km) |
| Jupiter MOID | 3.5285 AU (527.86 Gm) |
| Physical characteristics | |
| Dimensions | 800 - 1800 m[2][3] |
| Mass | ~2.9×1012 kg[4] |
Equatorial escape velocity | ~2.8 km/h[4] |
| 17.9[1] | |
(137108) 1999 AN10 is a near-Earth asteroid (NEA) of the Apollo group. It was discovered by LINEAR on January 13, 1999.[5]
On August 7, 2027, this NEA will pass within 0.0026 AU (390,000 km; 240,000 mi) (~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]
On August 7, 1946, the asteroid passed 0.00625 AU (935,000 km; 581,000 mi) from Earth and then 0.00404 AU (604,000 km; 376,000 mi) from the Moon.[7]
References
- ^ a b c d "JPL Small-Body Database Browser: 137108 (1999 AN10)". Retrieved 7 April 2016.
- ^ "137108 1999 AN10". The Near-Earth Asteroids Data Base at E.A.R.N. Retrieved 2008-01-31.
- ^ Absolute magnitude to diameter conversion table
- ^ a b 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.
{{cite web}}: Unknown parameter|deadurl=ignored (|url-status=suggested) (help) - ^ a b "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. 1999-07-12. Retrieved 2008-01-31.
- ^ "1999AN10 Ephemerides for 7 Aug 2027". NEODyS (Near Earth Objects - Dynamic Site). Retrieved 2011-10-16.
- ^ Paul W. Chodas (1999-05-18). "The Continuing Story Of Asteroid 1999 AN10". Archived from the original on 26 October 2010. Retrieved 2010-10-22.
{{cite web}}: Unknown parameter|deadurl=ignored (|url-status=suggested) (help)
External links
- Orbital simulation from JPL (Java) / Horizons Ephemeris
- (137108) 1999 AN10 at the JPL Small-Body Database