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AstDyS ∴ Objects ∴ 1997WQ21 ∴ Summary
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(18571) 1997WQ21  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 2.47455 8.31e-09 au
e 0.182407 4.008e-08
i 12.132 4.389e-06 deg
Ω 275.206 1.584e-05 deg
ω 12.834 1.865e-05 deg
M 74.647 1.036e-05 deg

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Other useful info
Absolute Magnitude (H)    13.7 mag
Slope parameter (G)    0.15 mag
Perihelion 2.0232 au
Aphelion 2.9259 au
Asc. node-Earth separation 1.01442 au
Desc. node-Earth separation 1.927 au
Earth MOID 1.00826 au
Orbital period 1421.82 days
Date of orbit computation  apr 23 19:50
Observational summary
Optical observations (Discarded) 2578 (7)
Radar observations (Discarded) 0 (0)
Arc length 12971.7 days
Unobserved 97 days

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Ephemeris at epoch 60427 MJD
Right Ascension 27.6342 deg
Declination 19.7283 deg
V Magnitude 18.72 mag
Solar Elongation 8.88 deg
Galactic Latitude -41.01 deg
Rate 0.455 deg/day
Direction 70.77 deg

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