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AstDyS ∴ Objects ∴ Hirayama ∴ Summary
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(1999) Hirayama  ▹ 
SUMMARY
Keplerian elements at epoch
58400.0 MJD
Value 1-σ variation Units
a 3.11527 1.501e-08 au
e 0.116343 3.696e-08
i 12.526 4.228e-06 deg
Ω 147.898 1.735e-05 deg
ω 356.796 2.398e-05 deg
M 111.3 1.587e-05 deg

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Other useful info
Absolute Magnitude (H)    11.0 mag
Slope parameter (G)    0.15 mag
Perihelion 2.7528 au
Aphelion 3.4777 au
Asc. node-Earth separation 1.76374 au
Desc. node-Earth separation 2.465 au
Earth MOID 1.76366 au
Orbital period 2008.36 days
Date of orbit computation  Oct 31 04:56
Observational summary
Optical observations (Discarded) 2446 (26)
Radar observations (Discarded) 0 (0)
Arc length 30519.3 days
Unobserved 179 days

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Ephemeris at epoch 58593 MJD
Right Ascension 315.044 deg
Declination -10.6369 deg
V Magnitude 17.32 mag
Solar Elongation 75.08 deg
Galactic Latitude -33.37 deg
Rate 0.207 deg/day
Direction 74.236 deg

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