(237442) 1999 TA10

(237442) 1999 TA10, provisionally known as 1999 TA10, is a near-Earth object (NEO) from the Amor asteroid group.[2] It is suspected of being an inner fragment of the differentiated asteroid 4 Vesta.[4]

(237442) 1999 TA10
Discovery[1]
Discovered byLINEAR
Discovery siteLincoln Laboratory ETS
Discovery date5 October 1999
Designations
(237442) 1999 TA10
Amor asteroid (NEO)[2]
Orbital characteristics[2]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc5592 days (15.31 yr)
Aphelion1.8695 AU (279.67 Gm) (Q)
Perihelion1.1419 AU (170.83 Gm) (q)
1.5057 AU (225.25 Gm) (a)
Eccentricity0.24161 (e)
1.85 yr (674.85 d)
342.45° (M)
0° 32m 0.42s / day (n)
Inclination20.843° (i)
214.68° (Ω)
84.791° (ω)
Earth MOID0.303797 AU (45.4474 Gm)
Physical characteristics
Dimensions500-1500 meters[2][3]
14 h (0.58 d)
14 hr(?)[2]
16.77 (close approach) to 22.29
18.1[2]

    Given an absolute magnitude (H) of 17.9,[2] and that the albedo is unknown, this NEO could vary from 500 to 1500 meters in diameter.[3]

    1999 TA10 was discovered by LINEAR at Lincoln Laboratory ETS on 5 October 1999 at apparent magnitude 17.7,[1] when it was only 0.39 AU from Earth.[5] In 2010, it came within 0.3 AU of Earth.[5] During the 2010 close approach, NASA Infrared Telescope Facility (NASA IRTF) studies suggested that 1999 TA10 originated from the interior of Vesta.[4] The next close approach will be in 2023.[5] In 2086, it will come within 0.017 AU (2,500,000 km; 1,600,000 mi) of Mars.[5]

    See also

    References
    1. "MPEC 1999-T43 : 1999 TA10". IAU Minor Planet Center. 1999-10-11. Retrieved 2011-01-12.
    2. "JPL Small-Body Database Browser: 237442 (1999 TA10)" (last observation: 2010-11-08). Retrieved 7 April 2016.
    3. "Conversion of Absolute Magnitude to Diameter". Minor Planet Center. Archived from the original on 27 October 2010. Retrieved 2011-01-12.
    4. "A look into Vesta's interior". Max Planck Society. 2011-01-06. Archived from the original on 13 January 2011. Retrieved 2011-01-07.
    5. "JPL Close-Approach Data: 237442 (1999 TA10)" (2010-11-08 last obs). Retrieved 2011-01-12.
    This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.