NEODyS-2

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1998SD9  ▹ 
SUMMARY
Keplerian elements
(Epoch 60000.0 MJD)
Value 1-σ variation Units
a 0.702481 1.298e-08 au
e 0.504453 3.78e-07
i 2.988 3.917e-05 deg
Ω 165.752 0.0001257 deg
ω 7.702 0.0001418 deg
M 359.077 0.0001073 deg

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Other useful info
Absolute Magnitude (H)    23.9 mag
Slope parameter (G)    0.15 mag
Perihelion distance 0.3481 au
Aphelion distance 1.0568 au
Asc. node-Earth separation -0.64289 au
Desc. node-Earth separation 0.03875 au
Earth MOID 0.00857 au
Orbital period 215.055 days
Date of orbit computation   dic 21 10:40
Observational summary
Optical observations (Discarded) 149 (5)
Radar observations (Discarded) 1 (0)
Arc length 7302 days
Unobserved 1656 days

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Ephemeris
(Epoch 60032 MJD)
Right Ascension 338.472 deg
Declination -7.61452 deg
V Magnitude 25.39 mag
Solar Elongation 30.49 deg
Galactic Latitude -52.04 deg
Rate 0.829 deg/day
Direction 69.256 deg

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