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AstDyS ∴ Objects ∴ 1999XQ21 ∴ Summary
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(121661) 1999XQ21  ▹ 
SUMMARY
Keplerian elements at epoch
58400.0 MJD
Value 1-σ variation Units
a 3.12239 3.019e-08 au
e 0.283674 6.334e-08
i 16.766 6.349e-06 deg
Ω 104.141 2.674e-05 deg
ω 317.569 3.005e-05 deg
M 175.059 1.285e-05 deg

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Other useful info
Absolute Magnitude (H)    15.0 mag
Slope parameter (G)    0.15 mag
Perihelion 2.2366 au
Aphelion 4.0081 au
Asc. node-Earth separation 1.38978 au
Desc. node-Earth separation 2.614 au
Earth MOID 1.27853 au
Orbital period 2015.25 days
Date of orbit computation  Oct 31 06:13
Observational summary
Optical observations (Discarded) 495 (1)
Radar observations (Discarded) 0 (0)
Arc length 6730.01 days
Unobserved 269 days

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Ephemeris at epoch 58499 MJD
Right Ascension 258.548 deg
Declination -14.973 deg
V Magnitude 21.93 mag
Solar Elongation 37.21 deg
Galactic Latitude 13.66 deg
Rate 0.256 deg/day
Direction 95.84 deg

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