(385695) 2005 TO74

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2005 TO74
Discovery
Discovery date 8 October 2005[1]
Designations
Trojan asteroid
Orbital characteristics[2][3]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 3
Observation arc 3661 days (10.02 yr)
Aphelion 31.677 AU (4.7388 Tm)
Perihelion 28.441 AU (4.2547 Tm)
30.059 AU (4.4968 Tm)
Eccentricity 0.053826
164.81 yr (60195.5 d)
278.95°
0° 0m 21.53s / day
Inclination 5.2607°
169.470°
307.37°
Earth MOID 27.4601 AU (4.10797 Tm)
Jupiter MOID 23.1858 AU (3.46855 Tm)
Jupiter Tisserand parameter 4.953
Physical characteristics
Dimensions ~100 km
8.3[2]

(385695) 2005 TO74 (also written 2005 TO74) is the fourth Neptune trojan discovered.[4] It orbits near Neptune's L4 Lagrangian point about 60 degrees ahead of Neptune and thus has the about same orbital period as Neptune. The Neptune-resonance should keep it more than 19 AU from Neptune for 14,000 years.[1] As of 2016, it is 25.5 AU from Neptune. 2005 TO74 is located close to the boundary separating stable orbits from unstable ones, and it may be influenced by a secular resonance.[5] It was discovered by Scott S. Sheppard and Chadwick A. Trujillo on 8 October 2005 near apparent magnitude 23.[1]

References[edit]

  1. ^ a b c MPEC 2005-U97 : 2005 TN74, 2005 TO74
  2. ^ a b "JPL Small-Body Database Browser: 385695 (2005 TO74)". Retrieved 12 April 2016. 
  3. ^ AstDys-2 about 2005 TO74
  4. ^ List Of Neptune Trojans
  5. ^ Zhou, Li-Yong; Dvorak, Rudolf; Sun, Yi-Sui (2011). "The dynamics of Neptune Trojans – II. Eccentric orbits and observed objects". Monthly Notices of the Royal Astronomical Society. 430 (3): 1849–1860. arXiv:1007.5362Freely accessible. Bibcode:2011MNRAS.410.1849Z. doi:10.1111/j.1365-2966.2010.17566.x. 

External links[edit]