(137108) 1999 AN10
Kilometer-length near-Earth asteroid and potentially hazardous asteroid / From Wikipedia, the free encyclopedia
(137108) 1999 AN10 is a kilometer-length near-Earth asteroid and potentially hazardous asteroid of the Apollo group. It was discovered by LINEAR on 13 January 1999.[5]
Discovery | |
---|---|
Discovered by | LINEAR |
Discovery date | 13 January 1999 |
Designations | |
(137108) 1999 AN10 | |
Orbital characteristics[1] | |
Epoch 13 September 2023 (JD 2453300.5) | |
Uncertainty parameter 0 | |
Observation arc | 66.97 yr |
Earliest precovery date | 26 January 1955 |
Aphelion | 2.28 AU (341 million km) |
Perihelion | 0.638 AU (95.4 million km) |
1.46 AU (218 million km) | |
Eccentricity | 0.56224 |
1.76 yr (643.37 d) | |
313.20° | |
0° 33m 34.236s / day (n) | |
Inclination | 39.929° |
314.35° | |
5 December 2023 | |
268.33° | |
Earth MOID | 0.00015 AU (22,000 km) |
Physical characteristics | |
Dimensions | 800–1800 m[2][3] |
Mass | ~2.9×1012 kg[4] |
Equatorial escape velocity | ~2.8 km/h[4] |
5.041 h[1] | |
18.1[1] | |
On 7 August 2027, this asteroid will pass at about 0.00261 AU (390,000 km; 243,000 mi; 1.02 LD) of the Earth's center.[6][1][7][8] During the close approach, it is expected to peak at about apparent magnitude 7.3,[9] and will be visible in binoculars.
1999 AN10 has a well-determined orbit with an observation arc of 65 years.[1] It was found by Andreas Doppler and Arno Gnädig in precovery images from 1955.[1] When astronomers had an observation arc of the object of 123 days, computations gave a 1 in 10 million chance it would return on an impact trajectory in 2039.[10]
On 7 August 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.[1]
Date | JPL SBDB nominal geocentric distance (AU) |
uncertainty region (3-sigma) |
---|---|---|
1946-08-07 | 0.006250 AU (935.0 thousand km) | ±900 km |
2027-08-07 | 0.002606 AU (389.9 thousand km) | ±160 km |
2076-02-04 | 0.027021 AU (4.0423 million km) | ±154 thousand km |
2198-02-01 | 0.063727 AU (9.5334 million km) | ±800 thousand km |