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AstDyS ∴ Objects ∴ McDonalda ∴ Summary
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(991) McDonalda  ▹ 
SUMMARY
Keplerian elements at epoch
58400.0 MJD
Value 1-σ variation Units
a 3.1421 1.438e-08 au
e 0.158453 3.369e-08
i 2.069 3.81e-06 deg
Ω 63.253 0.0001095 deg
ω 254.614 0.0001101 deg
M 133.052 1.187e-05 deg

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Other useful info
Absolute Magnitude (H)    11.2 mag
Slope parameter (G)    0.15 mag
Perihelion 2.6442 au
Aphelion 3.64 au
Asc. node-Earth separation 2.2095 au
Desc. node-Earth separation 1.92601 au
Earth MOID 1.63098 au
Orbital period 2034.36 days
Date of orbit computation  Oct 31 04:55
Observational summary
Optical observations (Discarded) 2600 (34)
Radar observations (Discarded) 0 (0)
Arc length 35063.1 days
Unobserved 181 days

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Ephemeris at epoch 58598 MJD
Right Ascension 115.475 deg
Declination 23.2628 deg
V Magnitude 17.72 mag
Solar Elongation -79.04 deg
Galactic Latitude 21.02 deg
Rate 0.171 deg/day
Direction 101.683 deg

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