NEODyS

NEODyS-2

Near Earth Objects - Dynamic Site

NEODyS ∴ Objects ∴ Apophis ∴ Orbital info ∴ Epoch 59200 MJD

(99942) Apophis ▹

ORBITAL INFORMATION

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(ASCII data file 99942.eq1)

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

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

Covariance matrix
7.95801908E-21	-1.21760924E-19	-2.72950511E-18	3.02545722E-18	-7.40709248E-17	6.62668804E-17	1.57053590E-16
-1.21760924E-19	2.36526215E-18	7.97603130E-17	-2.09352923E-15	3.51403445E-15	-1.45914931E-15	-4.48155678E-15
-2.72950511E-18	7.97603130E-17	3.01733327E-14	-1.44386578E-12	1.56779568E-12	-1.91257902E-13	-2.92760264E-13
3.02545722E-18	-2.09352923E-15	-1.44386578E-12	7.57339608E-11	-8.05664142E-11	8.34639425E-12	-2.63831636E-13
-7.40709248E-17	3.51403445E-15	1.56779568E-12	-8.05664142E-11	8.64754743E-11	-9.62262800E-12	2.67468571E-13
6.62668804E-17	-1.45914931E-15	-1.91257902E-13	8.34639425E-12	-9.62262800E-12	1.65073530E-12	4.88172674E-13
1.57053590E-16	-4.48155678E-15	-2.92760264E-13	-2.63831636E-13	2.67468571E-13	4.88172674E-13	6.06089396E-12

Correlation matrix
1.00000000	-0.88749478	-0.17614478	0.00389711	-0.08928917	0.57816969	0.71511689
-0.88749478	1.00000000	0.29856271	-0.15642064	0.24570834	-0.73845048	-1.18364351
-0.17614478	0.29856271	1.00000000	-0.95514619	0.97058002	-0.85697672	-0.68459251
0.00389711	-0.15642064	-0.95514619	1.00000000	-0.99554804	0.74647427	-0.01231440
-0.08928917	0.24570834	0.97058002	-0.99554804	1.00000000	-0.80539421	0.01168310
0.57816969	-0.73845048	-0.85697672	0.74647427	-0.80539421	1.00000000	0.15433570
0.71511689	-1.18364351	-0.68459251	-0.01231440	0.01168310	0.15433570	1.00000000