2004 KV18

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2004 KV18
Discovery
Discovery date 2004
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 3
Observation arc 708 days (1.94 yr)
Aphelion 35.961 AU (5.3797 Tm)
Perihelion 24.591 AU (3.6788 Tm)
30.276 AU (4.5292 Tm)
Eccentricity 0.18777
166.60 yr (60849.0 d)
66.828°
0° 0m 21.299s /day
Inclination 13.574°
235.57°
295.54°
Earth MOID 23.6207 AU (3.53361 Tm)
Jupiter MOID 19.3377 AU (2.89288 Tm)
Physical characteristics
Dimensions ~56 km[2]
8.9[1]

2004 KV18 is the eighth Neptune trojan identified and the second in Neptune's L5 Lagrangian point (trailing Neptune).[3] It is suspected to be around 56 km in mean diameter.[2] As of 2016, it is 38 AU from Neptune. By 2097, it will be 55 AU from Neptune.[4]

2004 KV18 is not a primordial Neptune trojan, and will leave the region on a relatively short time scale. The orbit of a Neptune trojan can only be stable when the eccentricity is less than 0.12.[5][6] Its lifetime as a trailing Neptune trojan is on the order of 100000 years into the future.[5]

References[edit]

  1. ^ a b "JPL Small-Body Database Browser: 2004 KV18". Retrieved 30 March 2016. 
  2. ^ a b The Tracking News
  3. ^ "List Of Neptune Trojans". Minor Planet Center. Archived from the original on 6 March 2012. Retrieved 2011-08-08. 
  4. ^ 2004 KV18 at JPL Horizons Change "Observer Location" to @Neptune
  5. ^ a b Guan, Pu; Zhou, Li-Yong; Li, Jian (2012). "Trailing (L5) Neptune Trojans: 2004 KV18 and 2008 LC18". Research in Astronomy and Astrophysics 12 (11): 1549–1562. arXiv:1205.2206. Bibcode:2012RAA....12.1549G. doi:10.1088/1674-4527/12/11/009. 
  6. ^ The dynamics of Neptune Trojan – I. The inclined orbits (figure 5)

External links[edit]