AstDyS-2

Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ 1998SY31 ∴ Summary
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(28111) 1998SY31  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 2.30042 5.439e-09 au
e 0.167995 2.78e-08
i 4.657 3.656e-06 deg
Ω 187.013 3.768e-05 deg
ω 240.319 3.954e-05 deg
M 67.622 1.185e-05 deg

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Other useful info
Absolute Magnitude (H)    15.8 mag
Slope parameter (G)    0.15 mag
Perihelion 1.914 au
Aphelion 2.6869 au
Asc. node-Earth separation 1.44045 au
Desc. node-Earth separation 1.06296 au
Earth MOID 0.93295 au
Orbital period 1274.41 days
Date of orbit computation  apr 23 19:52
Observational summary
Optical observations (Discarded) 1606 (5)
Radar observations (Discarded) 0 (0)
Arc length 16990.9 days
Unobserved 38 days

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Ephemeris at epoch 60426 MJD
Right Ascension 137.377 deg
Declination 13.8238 deg
V Magnitude 20.15 mag
Solar Elongation -99.73 deg
Galactic Latitude 36.77 deg
Rate 0.246 deg/day
Direction 97.401 deg

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