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(312540) 2009ER21  ▹ 
SUMMARY
Keplerian elements at epoch
58800.0 MJD
Value 1-σ variation Units
a 2.26145 2.492e-08 au
e 0.151255 7.438e-08
i 23.78 1.093e-05 deg
Ω 307.948 1.87e-05 deg
ω 299.053 4.7e-05 deg
M 354.636 4.936e-05 deg

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Other useful info
Absolute Magnitude (H)    16.5 mag
Slope parameter (G)    0.15 mag
Perihelion 1.9194 au
Aphelion 2.6035 au
Asc. node-Earth separation 1.04453 au
Desc. node-Earth separation 1.40071 au
Earth MOID 0.9829 au
Orbital period 1242.17 days
Date of orbit computation  Feb 24 19:36
Observational summary
Optical observations (Discarded) 183 (4)
Radar observations (Discarded) 0 (0)
Arc length 6234.86 days
Unobserved 442 days

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Ephemeris at epoch 58991 MJD
Right Ascension 341.222 deg
Declination -6.13782 deg
V Magnitude 20.87 mag
Solar Elongation 80.75 deg
Galactic Latitude -53.33 deg
Rate 0.382 deg/day
Direction 44.264 deg

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