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(137731) 1999XW121  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 2.30466 7.695e-09 au
e 0.152163 4.674e-08
i 5.48 3.54e-06 deg
Ω 304.564 5.226e-05 deg
ω 72.206 5.385e-05 deg
M 10.586 1.33e-05 deg

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Other useful info
Absolute Magnitude (H)    16.3 mag
Slope parameter (G)    0.15 mag
Perihelion 1.954 au
Aphelion 2.6553 au
Asc. node-Earth separation 1.13578 au
Desc. node-Earth separation 1.37738 au
Earth MOID 0.96337 au
Orbital period 1277.94 days
Date of orbit computation  apr 23 20:17
Observational summary
Optical observations (Discarded) 856 (4)
Radar observations (Discarded) 0 (0)
Arc length 8819.96 days
Unobserved 142 days

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Ephemeris at epoch 60427 MJD
Right Ascension 36.4064 deg
Declination 18.2383 deg
V Magnitude 20.4 mag
Solar Elongation -4.77 deg
Galactic Latitude -39.21 deg
Rate 0.579 deg/day
Direction 71.638 deg

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