NEODyS-2
Near Earth Objects - Dynamic Site
NEODyS ∴ Objects ∴ Apophis ∴ Orbital info
Contact »
(99942) Apophis  ▹ 
ORBITAL INFORMATION
◲
Keplerian elements
(Epoch 59000.0 MJD)
Value 1-σ variation Units
a 0.922571 2.744e-09 au
e 0.191475 3.81e-09
i 3.337 4.157e-07 deg
Ω 204.048 2.573e-05 deg
ω 126.687 2.515e-05 deg
M 248.148 9.311e-06 deg
Non-gravitational parameters
Value 1-σ variation Units
A1 N/A N/A au/day2
A2 -3.090e-14 5.345e-15 au/day2
Other useful info
Absolute Magnitude (H)    18.9 mag
Slope parameter (G)    0.15 mag
Perihelion distance 0.7459 au
Aphelion distance 1.0992 au
Asc. node-Earth separation 0.00031 au
Desc. node-Earth separation -0.19832 au
Earth MOID 9e-05 au
Orbital period 323.667 days
Date of orbit computation   Jan 16 14:12

 

Get the orbital details, including covariance and correlation
Near middle of observational arc (ASCII file) Epoch 56059.8 MJD
Near present day (ASCII file) Epoch 59000.0 MJD

 

Note. The elements are given with reduced precision in order to be more readable. For full precision please use the machine-readable ASCII files, which contain Equinoctial (not Keplerian) elements and are in a format suitable for OrbFit input. Also refer to the discussion in the FAQ.