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AstDyS ∴ Objects ∴ 1998HW18 ∴ Summary
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(100839) 1998HW18  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 2.27567 7.418e-09 au
e 0.184291 5.203e-08
i 5.415 5.561e-06 deg
Ω 207.328 4.576e-05 deg
ω 309.906 4.79e-05 deg
M 230.824 1.256e-05 deg

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Other useful info
Absolute Magnitude (H)    16.7 mag
Slope parameter (G)    0.15 mag
Perihelion 1.8563 au
Aphelion 2.6951 au
Asc. node-Earth separation 0.96211 au
Desc. node-Earth separation 1.49813 au
Earth MOID 0.871 au
Orbital period 1253.9 days
Date of orbit computation  feb 22 02:11
Observational summary
Optical observations (Discarded) 686 (5)
Radar observations (Discarded) 0 (0)
Arc length 9342.95 days
Unobserved 159 days

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Ephemeris at epoch 60398 MJD
Right Ascension 10.778 deg
Declination 5.65015 deg
V Magnitude 21.76 mag
Solar Elongation -3.78 deg
Galactic Latitude -57.16 deg
Rate 0.432 deg/day
Direction 68.977 deg

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