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AstDyS ∴ Objects ∴ 1997WR21 ∴ Summary
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(16832) 1997WR21  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 2.26542 6.107e-09 au
e 0.16646 3.334e-08
i 4.629 3.325e-06 deg
Ω 276.046 4.941e-05 deg
ω 113.063 5.101e-05 deg
M 302.693 1.3e-05 deg

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Other useful info
Absolute Magnitude (H)    15.2 mag
Slope parameter (G)    0.15 mag
Perihelion 1.8883 au
Aphelion 2.6425 au
Asc. node-Earth separation 1.33937 au
Desc. node-Earth separation 1.08533 au
Earth MOID 0.89946 au
Orbital period 1245.44 days
Date of orbit computation  apr 23 19:49
Observational summary
Optical observations (Discarded) 2331 (261)
Radar observations (Discarded) 0 (0)
Arc length 10986.4 days
Unobserved 303 days

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Ephemeris at epoch 60441 MJD
Right Ascension 352.061 deg
Declination -0.04661 deg
V Magnitude 19.75 mag
Solar Elongation 57.83 deg
Galactic Latitude -56.34 deg
Rate 0.513 deg/day
Direction 63.84 deg

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