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AstDyS ∴ Objects ∴ 1998YR21 ∴ Summary
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(285317) 1998YR21  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 2.78172 2.309e-08 au
e 0.178989 7.65e-08
i 4.368 7.8e-06 deg
Ω 116.568 0.0001091 deg
ω 32.306 0.0001128 deg
M 136.454 2.999e-05 deg

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Other useful info
Absolute Magnitude (H)    17.0 mag
Slope parameter (G)    0.15 mag
Perihelion 2.2838 au
Aphelion 3.2796 au
Asc. node-Earth separation 1.35576 au
Desc. node-Earth separation 2.15616 au
Earth MOID 1.29724 au
Orbital period 1694.6 days
Date of orbit computation  apr 23 20:50
Observational summary
Optical observations (Discarded) 196 (1)
Radar observations (Discarded) 0 (0)
Arc length 10274.1 days
Unobserved 304 days

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Ephemeris at epoch 60425 MJD
Right Ascension 321.632 deg
Declination -15.4358 deg
V Magnitude 23.07 mag
Solar Elongation 75.86 deg
Galactic Latitude -41.19 deg
Rate 0.219 deg/day
Direction 75.278 deg

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