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Table 2

Heliocentric Keplerian orbital elements of Neptune’s L4 Trojans (I): 2001 QR322, 2004 UP10, and 2005 TN53.

2001 QR322 2004 UP10 2005 TN53

semi-major axis, a (AU) = 30.356  ±  0.007 30.28  ±  0.02 30.262  ±  0.012
eccentricity, e = 0.02891  ±  0.00010 0.03140  ±  0.00010 0.069  ±  0.002
inclination, i (°) = 1.3210  ±  0.0006 1.43107  ±  0.00005 24.978  ±  0.003
longitude of the ascending node, Ω (°) = 151.548  ±  0.015 34.798  ±  0.003 9.2809  ±  0.0002
argument of perihelion, ω (°) = 167.0  ±  0.4 4  ±  3 84.7  ±  0.4
mean anomaly, M (°) = 60.3  ±  0.4 345  ±  2 296.7  ±  0.2
perihelion distance, q (AU) = 29.478  ±  0.005 29.329  ±  0.014 28.176  ±  0.010
absolute magnitude, H (mag) = 7.7 8.8 9.1

Notes. Values include the 1-σ uncertainty. (Epoch = JD 2 456 200.5, 2012-Sep-30.0; J2000.0 ecliptic and equinox. Sources: JPL Small-Body Database and AstDyS-2.)

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