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AstDyS ∴ Objects ∴ 1981ER12 ∴ Summary
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(35021) 1981ER12  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 3.08506 2.057e-08 au
e 0.098638 4.914e-08
i 11.126 6.362e-06 deg
Ω 338.86 2.212e-05 deg
ω 244.469 3.771e-05 deg
M 295.948 3.238e-05 deg

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Other useful info
Absolute Magnitude (H)    14.8 mag
Slope parameter (G)    0.15 mag
Perihelion 2.7808 au
Aphelion 3.3894 au
Asc. node-Earth separation 2.182 au
Desc. node-Earth separation 1.94023 au
Earth MOID 1.79631 au
Orbital period 1979.22 days
Date of orbit computation  feb 22 01:57
Observational summary
Optical observations (Discarded) 745 (6)
Radar observations (Discarded) 0 (0)
Arc length 15692.9 days
Unobserved 77 days

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Ephemeris at epoch 60419 MJD
Right Ascension 136.119 deg
Declination 18.2544 deg
V Magnitude 20.21 mag
Solar Elongation -104.11 deg
Galactic Latitude 37.33 deg
Rate 0.117 deg/day
Direction 132.661 deg

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