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AstDyS ∴ Objects ∴ 1998HW55 ∴ Summary
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(120817) 1998HW55  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 2.62389 1.078e-08 au
e 0.130296 5.326e-08
i 2.375 4.21e-06 deg
Ω 82.705 0.0001321 deg
ω 102.367 0.0001332 deg
M 53.087 1.875e-05 deg

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Other useful info
Absolute Magnitude (H)    16.0 mag
Slope parameter (G)    0.15 mag
Perihelion 2.282 au
Aphelion 2.9658 au
Asc. node-Earth separation 1.67043 au
Desc. node-Earth separation 1.49307 au
Earth MOID 1.28541 au
Orbital period 1552.44 days
Date of orbit computation  feb 22 02:15
Observational summary
Optical observations (Discarded) 681 (6)
Radar observations (Discarded) 0 (0)
Arc length 9150.84 days
Unobserved 348 days

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Ephemeris at epoch 60397 MJD
Right Ascension 274.91 deg
Declination -22.7988 deg
V Magnitude 20.76 mag
Solar Elongation 92.94 deg
Galactic Latitude -3.63 deg
Rate 0.241 deg/day
Direction 90.137 deg

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