NEODyS-2

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1998SD9  ▹ 
SUMMARY
Keplerian elements
(Epoch 59600.0 MJD)
Value 1-σ variation Units
a 0.702464 1.302e-08 au
e 0.504479 3.78e-07
i 2.987 3.917e-05 deg
Ω 165.753 0.0001257 deg
ω 7.69 0.0001418 deg
M 49.493 0.0001042 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 0.04113 au
Earth MOID 0.00895 au
Orbital period 215.048 days
Date of orbit computation   Oct 20 09:59
Observational summary
Optical observations (Discarded) 149 (5)
Radar observations (Discarded) 1 (0)
Arc length 7302 days
Unobserved 1135 days

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Ephemeris
(Epoch 59511 MJD)
Right Ascension 228.164 deg
Declination -34.6918 deg
V Magnitude 26.88 mag
Solar Elongation -29.23 deg
Galactic Latitude 19.73 deg
Rate 0.814 deg/day
Direction 31.229 deg

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