NEODyS-2

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(21374) 1997WS22  ▹ 
SUMMARY
Keplerian elements
(Epoch 60400.0 MJD)
Value 1-σ variation Units
a 1.26941 7.897e-10 au
e 0.120664 1.755e-08
i 23.982 3.527e-06 deg
Ω 59.199 3.63e-06 deg
ω 197.218 8.559e-06 deg
M 311.484 7.772e-06 deg

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Other useful info
Absolute Magnitude (H)    17.5 mag
Slope parameter (G)    0.15 mag
Perihelion distance 1.1162 au
Aphelion distance 1.4226 au
Asc. node-Earth separation 0.42686 au
Desc. node-Earth separation 0.10962 au
Earth MOID 0.10902 au
Orbital period 522.399 days
Date of orbit computation   apr 27 14:32
Observational summary
Optical observations (Discarded) 1559 (3)
Radar observations (Discarded) 1 (0)
Arc length 18114 days
Unobserved 2 days

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Ephemeris
(Epoch 60428 MJD)
Right Ascension 251.892 deg
Declination 26.9806 deg
V Magnitude 16.09 mag
Solar Elongation 125.8 deg
Galactic Latitude 37.95 deg
Rate 0.83 deg/day
Direction -154.262 deg

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