AstDyS-2

Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ 1998SY21 ∴ Summary
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(33331) 1998SY21  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 2.34714 6.409e-09 au
e 0.223109 3.384e-08
i 6.028 4.138e-06 deg
Ω 185.198 3.333e-05 deg
ω 139.923 3.462e-05 deg
M 65.238 9.378e-06 deg

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Other useful info
Absolute Magnitude (H)    15.6 mag
Slope parameter (G)    0.15 mag
Perihelion 1.8235 au
Aphelion 2.8708 au
Asc. node-Earth separation 1.69198 au
Desc. node-Earth separation 0.90375 au
Earth MOID 0.81673 au
Orbital period 1313.43 days
Date of orbit computation  apr 23 19:53
Observational summary
Optical observations (Discarded) 1591 (5)
Radar observations (Discarded) 0 (0)
Arc length 11721.6 days
Unobserved 140 days

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Ephemeris at epoch 60427 MJD
Right Ascension 53.9101 deg
Declination 15.5539 deg
V Magnitude 20.5 mag
Solar Elongation -18.8 deg
Galactic Latitude -31.62 deg
Rate 0.487 deg/day
Direction 77.304 deg

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