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(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]

(137108) 1999 AN10
Discovery
Discovered byLINEAR
Discovery date13 January 1999
Designations
MPC designation
(137108) 1999 AN10
Minor planet category
  • NEO
  • Apollo
  • PHA
Orbital characteristics[1]
Epoch 17 December 2020 (JD 2459200.5)
Uncertainty parameter 0
Observation arc23985 days (65.67 yr)
Earliest precovery date26 January 1955
Aphelion2.2784 AU (340.84 Gm)
Perihelion0.6387 AU (95.55 Gm)
Semi-major axis
1.4586 AU (218.20 Gm)
Eccentricity0.5621
Orbital period (sidereal)
1.76 yr (643.42 d)
Mean anomaly
113.67°
Mean motion
0° 33m 34.236s / day (n)
Inclination39.93°
Longitude of ascending node
314.38°
Argument of perihelion
268.32°
Earth MOID0.000904 AU (135,200 km)
Physical characteristics
Dimensions800–1800 m[2][3]
Mass~2.9×1012 kg[4]
Equatorial escape velocity
~2.8 km/h[4]
Sidereal rotation period
5.041 h[1]
Absolute magnitude (H)
17.9[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 should 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]

    1999 AN10
    Position uncertainty and increasing divergence[1]
    Date JPL SBDB
    nominal geocentric
    distance (AU)    		 uncertainty
    region
    (3-sigma)
    1946-08-070.006250 AU (935.0 thousand km)±900 km
    2027-08-070.002606 AU (389.9 thousand km)±160 km
    2076-02-040.027021 AU (4.0423 million km)±154 thousand km
    2198-02-010.063727 AU (9.5334 million km)±800 thousand km
    2027 Moon/Earth approach[1]
    Date & Time Approach
    to    		 Nominal distance
    2027-Aug-07 06:48Moon763391 km
    2027-Aug-07 07:11Earth389866 km
    Animation of 1999 AN10's orbit – Close approach in 2027.mw-parser-output .legend{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .legend-color{display:inline-block;min-width:1.25em;height:1.25em;line-height:1.25;margin:1px 0;text-align:center;border:1px solid black;background-color:transparent;color:black}.mw-parser-output .legend-text{}   Sun ·    Earth ·    1999 AN10
    Animation of 1999 AN10's orbit – Close approach in 2027
       Sun ·    Earth ·    1999 AN10

    See also


    History of close approaches of large near-Earth objects since 1908 (A)
    • v
    • t
    • e
    PHA Date Approach distance (lunar dist.) Abs.
    mag
    (H)    		 Diameter (C)
    (m)    		 Ref (D)
    Nomi-
    nal(B)    		 Mini-
    mum    		 Maxi-
    mum
    (33342) 1998 WT241908-12-163.5423.5373.54717.9556–1795data
    (458732) 2011 MD51918-09-170.9110.9090.91317.9556–1795data
    (7482) 1994 PC11933-01-172.9272.9272.92816.8749–1357data
    69230 Hermes1937-10-301.9261.9261.92717.5668–2158data
    69230 Hermes1942-04-261.6511.6511.65117.5668–2158data
    (137108) 1999 AN101946-08-072.4322.4292.43517.9556–1795data
    (33342) 1998 WT241956-12-163.5233.5233.52317.9556–1795data
    (163243) 2002 FB31961-04-124.9034.9004.90616.41669–1695data
    (192642) 1999 RD321969-08-273.6273.6253.63016.31161–3750data
    (143651) 2003 QO1041981-05-182.7612.7602.76116.01333–4306data
    2017 CH11992-06-054.6913.3916.03717.9556–1795data
    (170086) 2002 XR141995-06-244.2594.2594.26018.0531–1714data
    (33342) 1998 WT242001-12-164.8594.8594.85917.9556–1795data
    4179 Toutatis2004-09-294.0314.0314.03115.32440–2450data
    2014 JO252017-04-194.5734.5734.57317.8582–1879data
    (137108) 1999 AN102027-08-071.0141.0101.01917.9556–1795data
    (35396) 1997 XF112028-10-262.4172.4172.41816.9881–2845data
    (154276) 2002 SY502071-10-303.4153.4123.41817.6714–1406data
    (164121) 2003 YT12073-04-294.4094.4094.40916.21167–2267data
    (385343) 2002 LV2076-08-044.1844.1834.18516.61011–3266data
    (52768) 1998 OR22079-04-164.6114.6114.61215.81462–4721data
    (33342) 1998 WT242099-12-184.9194.9194.91917.9556–1795data
    (85182) 1991 AQ2130-01-274.1404.1394.14117.11100data
    314082 Dryope2186-07-163.7092.9964.78617.5668–2158data
    (137126) 1999 CF92192-08-214.9704.9674.97318.0531–1714data
    (290772) 2005 VC2198-05-051.9511.7912.13417.6638–2061data
    (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


    1. "JPL Small-Body Database Browser: 137108 (1999 AN10)". Retrieved 2 March 2021.
    2. "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.
    3. "Asteroid Size Estimator". CNEOS NASA/JPL. Retrieved 20 April 2018.
    4. 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.
    5. 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.
    6. 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.
    7. "NEODys (137108) 1999AN10". Department of Mathematics, University of Pisa, ITALY. Archived from the original on 6 December 2014. Retrieved 31 January 2008.
    8. "MPEC 1999-N21: 1999 AN10". IAU: Minor Planet Center. 12 July 1999. Retrieved 31 January 2008.
    9. "1999AN10 Ephemerides for 7 Aug 2027". NEODyS (Near Earth Objects – Dynamic Site). Retrieved 16 October 2011.
    10. 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.



    На других языках

    [de] (137108) 1999 AN10

    (137108) 1999 AN10 ist ein Asteroid vom Apollo-Typ. Er wurde am 13. Januar 1999 vom Lincoln Laboratory ETS, New Mexico entdeckt[1]. Am 12. Juli 1999 gelang es den Amateurastronomen Andreas Doppler und Arno Gnädig den Asteroiden auf alten Fotoplatten vom 26. Januar 1955 wiederzufinden[2].
    - [en] (137108) 1999 AN10

    [es] (137108) 1999 AN10

    (137108) 1999 AN10 es un asteroide que forma parte de los asteroides Apolo descubierto el 13 de enero de 1999[4] por el equipo del Lincoln Near-Earth Asteroid Research desde el Laboratorio Lincoln, Socorro, Nuevo México, Estados Unidos.

    [fr] (137108) 1999 AN10

    (137108) 1999 AN10 est un Apollo (géocroiseur) classé comme potentiellement dangereux découvert par le programme LINEAR le 13 janvier 1999.

    [ru] (137108) 1999 AN10

    (137108) 1999 AN10 — околоземный астероид из группы аполлонов, который характеризуется крайне высокими значениями наклона орбиты к плоскости эклиптики и её эксцентриситетом, из-за чего в процессе своего движения вокруг Солнца он пересекает орбиты сразу трёх планет: Венеры, Земли и Марса. Он был открыт 13 января 1999 года в рамках американской программы по поиску околоземных астероидов LINEAR в обсерватории Сокорро[6]. На данный момент не имеет собственного имени.


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