AstDyS-2

Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ 1999RD31 ∴ Summary
Contact »
(121231) 1999RD31  ▹ 
SUMMARY
Keplerian elements at epoch
58400.0 MJD
Value 1-σ variation Units
a 1.96122 1.017e-08 au
e 0.083557 8.259e-08
i 24.433 1.107e-05 deg
Ω 357.219 1.551e-05 deg
ω 55.453 8.14e-05 deg
M 303.342 7.586e-05 deg

More info »
Other useful info
Absolute Magnitude (H)    16.2 mag
Slope parameter (G)    0.15 mag
Perihelion 1.7973 au
Aphelion 2.1251 au
Asc. node-Earth separation 0.85507 au
Desc. node-Earth separation 1.04743 au
Earth MOID 0.84298 au
Orbital period 1003.2 days
Date of orbit computation  Oct 31 06:12
Observational summary
Optical observations (Discarded) 496 (4)
Radar observations (Discarded) 0 (0)
Arc length 7497.89 days
Unobserved 165 days

More info »
Ephemeris at epoch 58567 MJD
Right Ascension 28.0691 deg
Declination 27.2387 deg
V Magnitude 20.47 mag
Solar Elongation -34.89 deg
Galactic Latitude -33.7 deg
Rate 0.603 deg/day
Direction 65.165 deg

More info »





This Web Site has been visited 117582 times since

and this Page has been visited 78 times since 2011/11/01