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AstDyS ∴ Objects ∴ 1999WC21 ∴ Summary
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(257697) 1999WC21  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 3.10939 2.623e-08 au
e 0.123459 6.612e-08
i 1.708 5.977e-06 deg
Ω 59.518 0.0002182 deg
ω 79.392 0.0002197 deg
M 75.754 2.675e-05 deg

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Other useful info
Absolute Magnitude (H)    16.4 mag
Slope parameter (G)    0.15 mag
Perihelion 2.7255 au
Aphelion 3.4933 au
Asc. node-Earth separation 2.00776 au
Desc. node-Earth separation 2.12027 au
Earth MOID 1.73999 au
Orbital period 2002.68 days
Date of orbit computation  feb 22 02:45
Observational summary
Optical observations (Discarded) 249 (1)
Radar observations (Discarded) 0 (0)
Arc length 8583.78 days
Unobserved 369 days

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Ephemeris at epoch 60419 MJD
Right Ascension 240.597 deg
Declination -20.3829 deg
V Magnitude 21.25 mag
Solar Elongation 146.5 deg
Galactic Latitude 23.72 deg
Rate 0.124 deg/day
Direction -81.748 deg

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