AstDyS-2

Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ 1999RQ91 ∴ Summary
Contact »
(121257) 1999RQ91  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 2.72501 1.534e-08 au
e 0.132752 4.189e-08
i 12.695 6.04e-06 deg
Ω 4.103 2.132e-05 deg
ω 73.173 3.296e-05 deg
M 101.95 2.514e-05 deg

More info »
Other useful info
Absolute Magnitude (H)    15.1 mag
Slope parameter (G)    0.15 mag
Perihelion 2.3633 au
Aphelion 3.0868 au
Asc. node-Earth separation 1.57627 au
Desc. node-Earth separation 1.78687 au
Earth MOID 1.41414 au
Orbital period 1643.05 days
Date of orbit computation  feb 22 02:15
Observational summary
Optical observations (Discarded) 876 (4)
Radar observations (Discarded) 0 (0)
Arc length 8643.74 days
Unobserved 365 days

More info »
Ephemeris at epoch 60423 MJD
Right Ascension 187.129 deg
Declination -8.00563 deg
V Magnitude 19.33 mag
Solar Elongation -156.3 deg
Galactic Latitude 54.43 deg
Rate 0.191 deg/day
Direction -81.663 deg

More info »