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AstDyS ∴ Objects ∴ 1999JH21 ∴ Summary
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(31681) 1999JH21  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 2.75626 1.204e-08 au
e 0.122992 3.995e-08
i 10.634 4.444e-06 deg
Ω 228.562 1.9e-05 deg
ω 329.455 2.44e-05 deg
M 174.138 1.523e-05 deg

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Other useful info
Absolute Magnitude (H)    14.5 mag
Slope parameter (G)    0.15 mag
Perihelion 2.4173 au
Aphelion 3.0953 au
Asc. node-Earth separation 1.44497 au
Desc. node-Earth separation 2.0468 au
Earth MOID 1.42041 au
Orbital period 1671.4 days
Date of orbit computation  feb 22 01:56
Observational summary
Optical observations (Discarded) 1952 (216)
Radar observations (Discarded) 0 (0)
Arc length 18362 days
Unobserved 89 days

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Ephemeris at epoch 60398 MJD
Right Ascension 9.46137 deg
Declination 9.13886 deg
V Magnitude 20.22 mag
Solar Elongation -6.02 deg
Galactic Latitude -53.58 deg
Rate 0.368 deg/day
Direction 70.055 deg

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