NEODyS-2

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1998SD9  ▹ 
SUMMARY
Keplerian elements
(Epoch 60400.0 MJD)
Value 1-σ variation Units
a 0.702502 1.299e-08 au
e 0.504383 3.779e-07
i 2.987 3.916e-05 deg
Ω 165.75 0.0001257 deg
ω 7.705 0.0001418 deg
M 308.65 0.0001133 deg

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Other useful info
Absolute Magnitude (H)    23.9 mag
Slope parameter (G)    0.15 mag
Perihelion distance 0.3482 au
Aphelion distance 1.0568 au
Asc. node-Earth separation -0.64271 au
Desc. node-Earth separation 0.04026 au
Earth MOID 0.00878 au
Orbital period 215.065 days
Date of orbit computation   feb 26 10:22
Observational summary
Optical observations (Discarded) 149 (5)
Radar observations (Discarded) 1 (0)
Arc length 7302 days
Unobserved 2049 days

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Ephemeris
(Epoch 60425 MJD)
Right Ascension 54.0659 deg
Declination 18.8578 deg
V Magnitude 24.65 mag
Solar Elongation -21.32 deg
Galactic Latitude -29.09 deg
Rate 0.741 deg/day
Direction 69.557 deg

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