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Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ 1999RP9 ∴ Summary
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(121216) 1999RP9  ▹ 
SUMMARY
Keplerian elements at epoch
58400.0 MJD
Value 1-σ variation Units
a 2.736 2.194e-08 au
e 0.070292 4.54e-08
i 2.757 6.461e-06 deg
Ω 159.516 0.0001064 deg
ω 133.712 0.0001179 deg
M 127.616 4.92e-05 deg

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Other useful info
Absolute Magnitude (H)    15.5 mag
Slope parameter (G)    0.15 mag
Perihelion 2.5437 au
Aphelion 2.9283 au
Asc. node-Earth separation 1.86931 au
Desc. node-Earth separation 1.58711 au
Earth MOID 1.52746 au
Orbital period 1653 days
Date of orbit computation  Oct 31 06:12
Observational summary
Optical observations (Discarded) 657 (5)
Radar observations (Discarded) 0 (0)
Arc length 7898.15 days
Unobserved 217 days

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Ephemeris at epoch 58566 MJD
Right Ascension 78.9625 deg
Declination 20.6952 deg
V Magnitude 21.18 mag
Solar Elongation -76.88 deg
Galactic Latitude -10.14 deg
Rate 0.248 deg/day
Direction 82.122 deg

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