NEODyS-2

Near Earth Objects - Dynamic Site
NEODyS ∴ Objects ∴ 1998SD9 ∴ Summary
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1998SD9  ▹ 
SUMMARY
Keplerian elements
(Epoch 58800.0 MJD)
Value 1-σ variation Units
a 0.703034 7.282e-10 au
e 0.503933 2.322e-07
i 3.028 1.162e-05 deg
Ω 166.327 3.68e-05 deg
ω 7.048 3.913e-05 deg
M 151.417 7.442e-05 deg

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Other useful info
Absolute Magnitude (H)    23.9 mag
Slope parameter (G)    0.15 mag
Perihelion distance 0.3488 au
Aphelion distance 1.0573 au
Asc. node-Earth separation -0.6414 au
Desc. node-Earth separation 0.0424 au
Earth MOID 0.00959 au
Orbital period 215.309 days
Date of orbit computation   Sep 19 17:30
Observational summary
Optical observations (Discarded) 145 (27)
Radar observations (Discarded) 1 (0)
Arc length 7291 days
Unobserved 404 days

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Ephemeris
(Epoch 58770 MJD)
Right Ascension 254.179 deg
Declination -21.363 deg
V Magnitude 25.88 mag
Solar Elongation -55.21 deg
Galactic Latitude 13.4 deg
Rate 1.313 deg/day
Direction 97.78 deg

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