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AstDyS ∴ Objects ∴ 1991AB ∴ Summary
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(7764) 1991AB  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 2.66637 8.856e-09 au
e 0.198684 3.231e-08
i 12.278 1.613e-06 deg
Ω 127.62 1.511e-05 deg
ω 270.818 1.605e-05 deg
M 284.555 4.405e-06 deg

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Other useful info
Absolute Magnitude (H)    13.4 mag
Slope parameter (G)    0.15 mag
Perihelion 2.1366 au
Aphelion 3.1961 au
Asc. node-Earth separation 1.56945 au
Desc. node-Earth separation 1.5536 au
Earth MOID 1.18596 au
Orbital period 1590.3 days
Date of orbit computation  feb 22 01:51
Observational summary
Optical observations (Discarded) 6430 (526)
Radar observations (Discarded) 0 (0)
Arc length 11938.5 days
Unobserved 217 days

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Ephemeris at epoch 60420 MJD
Right Ascension 327.381 deg
Declination -12.5629 deg
V Magnitude 18.76 mag
Solar Elongation 64.78 deg
Galactic Latitude -45.09 deg
Rate 0.363 deg/day
Direction 77.222 deg

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