(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 |
| Date & Time | Approach to |
Nominal distance |
|---|---|---|
| 2027-Aug-07 06:48 | Moon | 763391 km |
| 2027-Aug-07 07:11 | Earth | 389866 km |
Sun · Earth · 1999 AN10
See also
editHistory of close approaches of large near-Earth objects since 1908 (A)
| PHA | Date | Approach distance (lunar dist.) | Abs. mag (H) |
Diameter (C) (m) |
Ref (D) | ||
|---|---|---|---|---|---|---|---|
| Nomi- nal(B) |
Mini- mum |
Maxi- mum | |||||
| (33342) 1998 WT24 | 1908-12-16 | 3.542 | 3.537 | 3.547 | 17.9 | 556–1795 | data |
| (458732) 2011 MD5 | 1918-09-17 | 0.911 | 0.909 | 0.913 | 17.9 | 556–1795 | data |
| (7482) 1994 PC1 | 1933-01-17 | 2.927 | 2.927 | 2.928 | 16.8 | 749–1357 | data |
| 69230 Hermes | 1937-10-30 | 1.926 | 1.926 | 1.927 | 17.5 | 668–2158 | data |
| 69230 Hermes | 1942-04-26 | 1.651 | 1.651 | 1.651 | 17.5 | 668–2158 | data |
| (137108) 1999 AN10 | 1946-08-07 | 2.432 | 2.429 | 2.435 | 17.9 | 556–1795 | data |
| (33342) 1998 WT24 | 1956-12-16 | 3.523 | 3.523 | 3.523 | 17.9 | 556–1795 | data |
| (163243) 2002 FB3 | 1961-04-12 | 4.903 | 4.900 | 4.906 | 16.4 | 1669–1695 | data |
| (192642) 1999 RD32 | 1969-08-27 | 3.627 | 3.625 | 3.630 | 16.3 | 1161–3750 | data |
| (143651) 2003 QO104 | 1981-05-18 | 2.761 | 2.760 | 2.761 | 16.0 | 1333–4306 | data |
| 2017 CH1 | 1992-06-05 | 4.691 | 3.391 | 6.037 | 17.9 | 556–1795 | data |
| (170086) 2002 XR14 | 1995-06-24 | 4.259 | 4.259 | 4.260 | 18.0 | 531–1714 | data |
| (33342) 1998 WT24 | 2001-12-16 | 4.859 | 4.859 | 4.859 | 17.9 | 556–1795 | data |
| 4179 Toutatis | 2004-09-29 | 4.031 | 4.031 | 4.031 | 15.3 | 2440–2450 | data |
| 2014 JO25 | 2017-04-19 | 4.573 | 4.573 | 4.573 | 17.8 | 582–1879 | data |
| (137108) 1999 AN10 | 2027-08-07 | 1.014 | 1.010 | 1.019 | 17.9 | 556–1795 | data |
| (35396) 1997 XF11 | 2028-10-26 | 2.417 | 2.417 | 2.418 | 16.9 | 881–2845 | data |
| (154276) 2002 SY50 | 2071-10-30 | 3.415 | 3.412 | 3.418 | 17.6 | 714–1406 | data |
| (164121) 2003 YT1 | 2073-04-29 | 4.409 | 4.409 | 4.409 | 16.2 | 1167–2267 | data |
| (385343) 2002 LV | 2076-08-04 | 4.184 | 4.183 | 4.185 | 16.6 | 1011–3266 | data |
| (52768) 1998 OR2 | 2079-04-16 | 4.611 | 4.611 | 4.612 | 15.8 | 1462–4721 | data |
| (33342) 1998 WT24 | 2099-12-18 | 4.919 | 4.919 | 4.919 | 17.9 | 556–1795 | data |
| (85182) 1991 AQ | 2130-01-27 | 4.140 | 4.139 | 4.141 | 17.1 | 1100 | data |
| 314082 Dryope | 2186-07-16 | 3.709 | 2.996 | 4.786 | 17.5 | 668–2158 | data |
| (137126) 1999 CF9 | 2192-08-21 | 4.970 | 4.967 | 4.973 | 18.0 | 531–1714 | data |
| (290772) 2005 VC | 2198-05-05 | 1.951 | 1.791 | 2.134 | 17.6 | 638–2061 | data |
| (A) List includes near-Earth approaches of less than 5 lunar distances (LD) of objects with H brighter than 18. (B) Nominal geocentric distance from the Earth's center to the object's center (Earth radius≈0.017 LD). (C) Diameter: estimated, theoretical mean-diameter based on H and albedo range between X and Y. (D) Reference: data source from the JPL SBDB, with AU converted into LD (1 AU≈390 LD) (E) Color codes: unobserved at close approach observed during close approach upcoming approaches | |||||||
References
edit- ^ a b c d e f g h i "JPL Small-Body Database Browser: 137108 (1999 AN10)". Retrieved 20 September 2023.
- ^ "137108 1999 AN10". The Near-Earth Asteroids Data Base at E.A.R.N. Archived from the original on 24 February 2012. Retrieved 31 January 2008.
- ^ "Asteroid Size Estimator". CNEOS NASA/JPL. Retrieved 20 April 2018.
- ^ 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 2.99×1012 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 31 January 2008.
- ^ "NEODys (137108) 1999AN10". Department of Mathematics, University of Pisa, ITALY. Archived from the original on 6 December 2014. Retrieved 31 January 2008.
- ^ "MPEC 1999-N21: 1999 AN10". IAU: Minor Planet Center. 12 July 1999. Retrieved 31 January 2008.
- ^ "1999AN10 Ephemerides for 7 Aug 2027". NEODyS (Near Earth Objects – Dynamic Site). Retrieved 16 October 2011.
- ^ Paul W. Chodas (18 May 1999). "The Continuing Story Of Asteroid 1999 AN10". Archived from the original on 26 October 2010. Retrieved 22 October 2010.
External links
edit- (137108) 1999 AN10 at AstDyS-2, Asteroids—Dynamic Site
- AN10 (137108) 1999 AN10 at ESA–space situational awareness
- (137108) 1999 AN10 at the JPL Small-Body Database
