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(21558) Alisonliu  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 2.67438 8.923e-09 au
e 0.163293 2.716e-08
i 11.962 3.078e-06 deg
Ω 323.397 1.587e-05 deg
ω 288.024 1.859e-05 deg
M 30.948 1.036e-05 deg

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Other useful info
Absolute Magnitude (H)    12.8 mag
Slope parameter (G)    0.15 mag
Perihelion 2.2377 au
Aphelion 3.1111 au
Asc. node-Earth separation 1.46568 au
Desc. node-Earth separation 1.75469 au
Earth MOID 1.25735 au
Orbital period 1597.47 days
Date of orbit computation  Jun 5 00:41
Observational summary
Optical observations (Discarded) 3708 (38)
Radar observations (Discarded) 0 (0)
Arc length 11785 days
Unobserved 42 days

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Ephemeris at epoch 60487 MJD
Right Ascension 342.809 deg
Declination -8.80044 deg
V Magnitude 17.17 mag
Solar Elongation 113.75 deg
Galactic Latitude -56.21 deg
Rate 0.109 deg/day
Direction 31.755 deg

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