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AstDyS ∴ Objects ∴ 2008HH21 ∴ Summary
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(228047) 2008HH21  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 1.92911 1.109e-08 au
e 0.074633 5.32e-08
i 21.08 7.528e-06 deg
Ω 221.512 1.448e-05 deg
ω 286.787 5.901e-05 deg
M 54.166 6.205e-05 deg

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Other useful info
Absolute Magnitude (H)    17.7 mag
Slope parameter (G)    0.15 mag
Perihelion 1.7851 au
Aphelion 2.0731 au
Asc. node-Earth separation 0.87004 au
Desc. node-Earth separation 0.96957 au
Earth MOID 0.85024 au
Orbital period 978.663 days
Date of orbit computation  apr 23 20:37
Observational summary
Optical observations (Discarded) 257 (4)
Radar observations (Discarded) 0 (0)
Arc length 8127.33 days
Unobserved 68 days

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Ephemeris at epoch 60425 MJD
Right Ascension 222.333 deg
Declination -17.8097 deg
V Magnitude 19.18 mag
Solar Elongation 169.6 deg
Galactic Latitude 36.74 deg
Rate 0.444 deg/day
Direction -30.996 deg

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