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(312540) 2009ER21  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 2.26127 1.714e-08 au
e 0.150702 5.007e-08
i 23.781 7.007e-06 deg
Ω 307.936 1.268e-05 deg
ω 298.774 3.787e-05 deg
M 98.653 4.131e-05 deg

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Other useful info
Absolute Magnitude (H)    16.5 mag
Slope parameter (G)    0.15 mag
Perihelion 1.9205 au
Aphelion 2.602 au
Asc. node-Earth separation 1.04559 au
Desc. node-Earth separation 1.39838 au
Earth MOID 0.98326 au
Orbital period 1242.01 days
Date of orbit computation  apr 23 20:55
Observational summary
Optical observations (Discarded) 489 (48)
Radar observations (Discarded) 0 (0)
Arc length 7812.82 days
Unobserved 300 days

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Ephemeris at epoch 60427 MJD
Right Ascension 8.45332 deg
Declination 19.9812 deg
V Magnitude 21.69 mag
Solar Elongation 25.69 deg
Galactic Latitude -42.7 deg
Rate 0.463 deg/day
Direction 58.429 deg

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