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AstDyS ∴ Objects ∴ 1998HE121 ∴ Summary
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(18715) 1998HE121  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 3.00707 1.328e-08 au
e 0.077125 3.532e-08
i 11.72 3.8e-06 deg
Ω 84.818 1.663e-05 deg
ω 318.335 2.794e-05 deg
M 166.495 2.201e-05 deg

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Other useful info
Absolute Magnitude (H)    12.8 mag
Slope parameter (G)    0.15 mag
Perihelion 2.7752 au
Aphelion 3.239 au
Asc. node-Earth separation 1.84292 au
Desc. node-Earth separation 2.1561 au
Earth MOID 1.79788 au
Orbital period 1904.65 days
Date of orbit computation  apr 23 19:50
Observational summary
Optical observations (Discarded) 3408 (24)
Radar observations (Discarded) 0 (0)
Arc length 19849.6 days
Unobserved 35 days

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Ephemeris at epoch 60427 MJD
Right Ascension 218.202 deg
Declination -1.5925 deg
V Magnitude 17.48 mag
Solar Elongation -167.26 deg
Galactic Latitude 52.31 deg
Rate 0.206 deg/day
Direction -79.982 deg

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