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NEODyS ∴ Objects ∴ 1997WB21 ∴ Summary
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(380128) 1997WB21  ▹ 
SUMMARY
Keplerian elements
(Epoch 60000.0 MJD)
Value 1-σ variation Units
a 1.45978 1.314e-09 au
e 0.317098 2.134e-08
i 3.39 3.073e-06 deg
Ω 280.964 3.468e-05 deg
ω 81.96 3.626e-05 deg
M 139.059 4.515e-06 deg

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Other useful info
Absolute Magnitude (H)    20.4 mag
Slope parameter (G)    0.15 mag
Perihelion distance 0.9969 au
Aphelion distance 1.9227 au
Asc. node-Earth separation 0.23998 au
Desc. node-Earth separation 0.39029 au
Earth MOID 0.05086 au
Orbital period 644.211 days
Date of orbit computation   mar 14 13:49
Observational summary
Optical observations (Discarded) 404 (1)
Radar observations (Discarded) 0 (0)
Arc length 9238 days
Unobserved 12 days

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Ephemeris
(Epoch 60028 MJD)
Right Ascension 153.272 deg
Declination 4.44718 deg
V Magnitude 22.54 mag
Solar Elongation -149.26 deg
Galactic Latitude 45.99 deg
Rate 0.281 deg/day
Direction -63.82 deg

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