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AstDyS ∴ Objects ∴ Hirayama ∴ Summary
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(1999) Hirayama  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 3.11391 1.039e-08 au
e 0.11831 2.632e-08
i 12.535 2.811e-06 deg
Ω 147.847 1.295e-05 deg
ω 355.989 1.794e-05 deg
M 111.037 1.31e-05 deg

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Other useful info
Absolute Magnitude (H)    11.2 mag
Slope parameter (G)    0.15 mag
Perihelion 2.7455 au
Aphelion 3.4823 au
Asc. node-Earth separation 1.75852 au
Desc. node-Earth separation 2.46984 au
Earth MOID 1.75836 au
Orbital period 2007.04 days
Date of orbit computation  Jun 5 00:37
Observational summary
Optical observations (Discarded) 7138 (89)
Radar observations (Discarded) 0 (0)
Arc length 32550.6 days
Unobserved 41 days

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Ephemeris at epoch 60487 MJD
Right Ascension 283.816 deg
Declination -9.68271 deg
V Magnitude 16.1 mag
Solar Elongation 163.92 deg
Galactic Latitude -5.24 deg
Rate 0.191 deg/day
Direction -101.746 deg

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