AstDyS-2

Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ 2001ER9 ∴ Summary
Contact »
(422723) 2001ER9  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 2.77731 1.994e-08 au
e 0.363724 6.222e-08
i 13.176 7.238e-06 deg
Ω 161.698 2.349e-05 deg
ω 62.864 2.801e-05 deg
M 331.365 1.241e-05 deg

More info »
Other useful info
Absolute Magnitude (H)    16.6 mag
Slope parameter (G)    0.15 mag
Perihelion 1.7671 au
Aphelion 3.7875 au
Asc. node-Earth separation 1.07612 au
Desc. node-Earth separation 1.88112 au
Earth MOID 0.80449 au
Orbital period 1690.58 days
Date of orbit computation  apr 23 21:20
Observational summary
Optical observations (Discarded) 316 (0)
Radar observations (Discarded) 0 (0)
Arc length 8410.6 days
Unobserved 45 days

More info »
Ephemeris at epoch 60427 MJD
Right Ascension 149.405 deg
Declination 17.0766 deg
V Magnitude 20.03 mag
Solar Elongation -108.66 deg
Galactic Latitude 48.72 deg
Rate 0.206 deg/day
Direction 81.644 deg

More info »