NEODyS-2

Near Earth Objects - Dynamic Site
NEODyS ∴ Objects ∴ Apophis ∴ Summary
Contact »
(99942) Apophis  ▹ 
SUMMARY
Keplerian elements
(Epoch 59200.0 MJD)
Value 1-σ variation Units
a 0.922525 8.921e-11 au
e 0.191509 1.538e-09
i 3.337 1.737e-07 deg
Ω 204.042 8.703e-06 deg
ω 126.654 9.299e-06 deg
M 110.632 1.285e-06 deg

More info »
Non-gravitational parameters
Value 1-σ variation Units
A1 N/A N/A au/day2
A2 -2.900e-14 2.462e-16 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 -0.0007 au
Desc. node-Earth separation -0.1995 au
Earth MOID 0.00021 au
Orbital period 323.642 days
Date of orbit computation   apr 20 2021

Observational summary
Optical observations (Discarded) 9523 (22)
Radar observations (Discarded) 50 (0)
Arc length 6276 days
Unobserved 1083 days

More info »
Ephemeris
(Epoch 60438 MJD)
Right Ascension 40.4471 deg
Declination 15.3504 deg
V Magnitude 20.3 mag
Solar Elongation 4.79 deg
Galactic Latitude -39.79 deg
Rate 1.136 deg/day
Direction 74.173 deg

More info »