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AstDyS ∴ Objects ∴ 2009ER21 ∴ Summary
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(312540) 2009ER21  ▹ 
SUMMARY
Keplerian elements at epoch
58400.0 MJD
Value 1-σ variation Units
a 2.26144 4.204e-08 au
e 0.151066 1.015e-07
i 23.778 1.119e-05 deg
Ω 307.95 2.242e-05 deg
ω 299.008 5.296e-05 deg
M 238.729 6.207e-05 deg

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Other useful info
Absolute Magnitude (H)    16.5 mag
Slope parameter (G)    0.15 mag
Perihelion 1.9198 au
Aphelion 2.6031 au
Asc. node-Earth separation 1.04336 au
Desc. node-Earth separation 1.39841 au
Earth MOID 0.98115 au
Orbital period 1242.15 days
Date of orbit computation  Dec 20 14:48
Observational summary
Optical observations (Discarded) 154 (4)
Radar observations (Discarded) 0 (0)
Arc length 5814.87 days
Unobserved 589 days

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Ephemeris at epoch 58580 MJD
Right Ascension 131.266 deg
Declination -0.49816 deg
V Magnitude 20.31 mag
Solar Elongation -115.82 deg
Galactic Latitude 24.8 deg
Rate 0.043 deg/day
Direction 155.071 deg

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