(137108) 1999 AN 10 is a near - Earth asteroid from the Apollo group, which is characterized by extremely high values of the inclination of the orbit to the ecliptic plane and its eccentricity, because of which, during its movement around the Sun, it crosses the orbits of three planets at once: Venus , Earth and Mars . It was discovered on January 13, 1999 as part of the LINEAR Earth Asteroid Search Program at Socorro Observatory [6] . At the moment does not have its own name.
- Orbit of asteroid 1999 AN10 and its position in the solar system
| (137108) 1999 AN 10 | |
|---|---|
| Asteroid | |
| Discovery [1] | |
| Discoverer | LINEAR |
| Detection point | Socorro |
| Date of discovery | January 13, 1999 |
| Alternative designations | 1999 AN 10 |
| Category | NEA ( Apollo ) |
| Orbital characteristics [2] | |
| The Age of September 30, 2012 JD 2456200.5 | |
| Eccentricity ( e ) | 0.5621015 |
| Semi-axis ( a ) | 218.237 million km (1.4588262 a. E.) |
| Perihelion ( q ) | 95.566 million km (0.6388178 a. E.) |
| Afhelia ( Q ) | 340.909 million km (2.2788346 a. E.) |
| Period of circulation ( P ) | 643,582 days (1,762 g ) |
| Average orbital speed | 22.57 km / s |
| Inclination ( i ) | 39.92694 ° |
| Ascending node longitude (Ω) | 314.42230 ° |
| Perihelion Argument (ω) | 268.31179 ° |
| Mean Anomaly ( M ) | 235.36228 ° |
| Physical characteristics [3] [4] [5] | |
| Diameter | 0.8 - 1.8 km |
| Weight | 2.9⋅10 12 kg |
| Density | 2.6 g / cm³ |
| 2nd cosmic speed | 0,000078 km / s |
| Apparent magnitude | 22.78 m (current) |
| Absolute magnitude | 17,844 m |
| Current distance from the Sun | 2,272 a. e. |
| Current distance from Earth | 2,593 a. e. |
This asteroid is interesting primarily close proximity to the Earth, which is expected August 7, 2027. According to calculations on this day, the minimum distance between the Earth and the asteroid will be about one of the radius of the lunar orbit or 388960 km [7] [8] . During this rapprochement in the Earth’s sky, the asteroid will reach a maximum of its brightness and will look like a star of 7.3 m magnitude, so it can be seen through good binoculars [9] . As a result of the rapprochement, the asteroid will experience a strong gravitational effect from the Earth, which will have to take it away from a dangerous trajectory and will change its orbit so that it will never get closer to our planet. It is estimated that the probability of the subsequent closest convergence in 2039 will be no more than one 10-millionth [10] .
Interestingly, the process of analyzing its orbit and viewing records of old observations, astronomers estimated that from 1955 to 1999 this asteroid was opened at least 166 times, but lost each time, since they did not have time to calculate its orbit.
See also
- List of asteroids ( 137101-137200 )
- Small Planet Classifications
- List of asteroids crossing the orbit of Venus
- List of asteroids crossing the Earth's orbit
- List of asteroids crossing the orbit of Mars
Notes
- ↑ MPEC 1999-N21: 1999 AN10 . IAU: Minor Planet Center (1999 July 12, 21:23). The date of circulation is January 31, 2008. Archived September 29, 2012.
- ↑ NEODys (137108) 1999AN10 Neopr . Department of Mathematics, University of Pisa, ITALY. The date of circulation is January 31, 2008. Archived April 18, 2009.
- ↑ 137108 1999 AN10 (not available link) . The Near-Earth Asteroids Data Base at EARN The appeal date is January 31, 2008. Archived September 29, 2012.
- ↑ Absolute magnitude to diameter conversion table
- ↑ estimated radius of 0.650 km; ball volume * estimated density of 2.6 g / cm³ (although it may be a “ pile of rubble ”) gives a mass equal to 2.99⋅10 12 kg and 0.000078 km / s
- ↑ Hannu, Karttunen. Astrophysics with the conference held on August 12–15, 1998 / Karttunen Hannu, Piirola Vilppu. - University of Turku, 1999. - P. 270. - ISBN 951-29-1615-0 .
- ↑ Piero Sicoli , Francesco Munk . Sormano Astronomical Observatory: Table of Next Closest Approaches to the Earth by Asteroids . Astronomical Observatory of Brera. The appeal date is January 31, 2008. Archived December 1, 2007
- ↑ JPL Close-Approach Data: 137108 (1999 AN10) (2006-08-04 last obs (arc = 51.5 years)). The date of circulation is October 17, 2011. Archived September 29, 2012.
- ↑ 1999AN10 Ephemerides for 7 Aug 2027 . NEODyS (Near Earth Objects - Dynamic Site). The date of circulation is October 16, 2011. Archived September 29, 2012.
- ↑ Paul W. Chodas, Research Scientist, Near Earth Object Program Office, Jet Propulsion Laboratory. The Continuing Story Of Asteroid 1999 AN10 (May 18, 1999). Circulation date October 22, 2010. Archived October 26, 2010.