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AstDyS ∴ Objects ∴ 1998HE1 ∴ Summary
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(18691) 1998HE1  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 3.19989 1.875e-08 au
e 0.132697 3.613e-08
i 7.606 4.58e-06 deg
Ω 10.349 2.877e-05 deg
ω 279.643 3.344e-05 deg
M 123.676 1.758e-05 deg

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Other useful info
Absolute Magnitude (H)    13.4 mag
Slope parameter (G)    0.15 mag
Perihelion 2.7753 au
Aphelion 3.6245 au
Asc. node-Earth separation 2.07531 au
Desc. node-Earth separation 2.21614 au
Earth MOID 1.77244 au
Orbital period 2090.74 days
Date of orbit computation  apr 23 19:50
Observational summary
Optical observations (Discarded) 2539 (206)
Radar observations (Discarded) 0 (0)
Arc length 11614 days
Unobserved 98 days

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Ephemeris at epoch 60425 MJD
Right Ascension 57.8845 deg
Declination 25.4639 deg
V Magnitude 19.88 mag
Solar Elongation -26.71 deg
Galactic Latitude -21.83 deg
Rate 0.315 deg/day
Direction 77.684 deg

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