AstDyS-2

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AstDyS ∴ Objects ∴ 1998HP ∴ Summary
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(257539) 1998HP  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 2.29702 8.102e-09 au
e 0.178612 5.105e-08
i 3.131 4.774e-06 deg
Ω 120.911 9.034e-05 deg
ω 113.285 9.186e-05 deg
M 145.7 1.4e-05 deg

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Other useful info
Absolute Magnitude (H)    17.8 mag
Slope parameter (G)    0.15 mag
Perihelion 1.8867 au
Aphelion 2.7073 au
Asc. node-Earth separation 1.40959 au
Desc. node-Earth separation 1.06101 au
Earth MOID 0.87808 au
Orbital period 1271.58 days
Date of orbit computation  apr 23 20:44
Observational summary
Optical observations (Discarded) 345 (1)
Radar observations (Discarded) 0 (0)
Arc length 9300.98 days
Unobserved 203 days

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Ephemeris at epoch 60426 MJD
Right Ascension 33.7078 deg
Declination 11.1222 deg
V Magnitude 22.96 mag
Solar Elongation 2.37 deg
Galactic Latitude -46.73 deg
Rate 0.415 deg/day
Direction 70.596 deg

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