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AstDyS ∴ Objects ∴ 2009HD21 ∴ Summary
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2009HD21  ▹ 
SUMMARY

Warning: This object is a Near Earth Asteroid. You can have more detailed information looking at
its home page on the NEODyS web site

Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 2.77013 1.25e-08 au
e 0.688071 2.395e-08
i 18.65 1.429e-05 deg
Ω 179.191 1.708e-05 deg
ω 134.295 1.803e-05 deg
M 60.561 8.066e-06 deg

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Other useful info
Absolute Magnitude (H)    18.3 mag
Slope parameter (G)    0.15 mag
Perihelion 0.8641 au
Aphelion 4.6762 au
Asc. node-Earth separation 1.81218 au
Desc. node-Earth separation -0.01789 au
Earth MOID 0.01204 au
Orbital period 1684.02 days
Date of orbit computation  apr 24 01:36
Observational summary
Optical observations (Discarded) 218 (2)
Radar observations (Discarded) 0 (0)
Arc length 5405.89 days
Unobserved 105 days

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Ephemeris at epoch 60427 MJD
Right Ascension 83.5553 deg
Declination 7.6808 deg
V Magnitude 24.54 mag
Solar Elongation -48.45 deg
Galactic Latitude -13.33 deg
Rate 0.29 deg/day
Direction 78.672 deg

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