AstDyS-2

Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ Robertball ∴ Summary
Contact »
(4809) Robertball  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 2.56771 6.555e-09 au
e 0.247624 2.635e-08
i 13.657 3.038e-06 deg
Ω 169.196 1.386e-05 deg
ω 173.687 1.603e-05 deg
M 80.904 1.015e-05 deg

More info »
Other useful info
Absolute Magnitude (H)    13.0 mag
Slope parameter (G)    0.15 mag
Perihelion 1.9319 au
Aphelion 3.2035 au
Asc. node-Earth separation 2.20429 au
Desc. node-Earth separation 0.92824 au
Earth MOID 0.92489 au
Orbital period 1502.85 days
Date of orbit computation  apr 23 19:46
Observational summary
Optical observations (Discarded) 3844 (11)
Radar observations (Discarded) 0 (0)
Arc length 34895.4 days
Unobserved 59 days

More info »
Ephemeris at epoch 60451 MJD
Right Ascension 92.0108 deg
Declination 13.7548 deg
V Magnitude 18.69 mag
Solar Elongation -33.16 deg
Galactic Latitude -3.11 deg
Rate 0.394 deg/day
Direction 86.044 deg

More info »