NEODyS

NEODyS-2

Near Earth Objects - Dynamic Site

NEODyS ∴ Objects ∴ Apophis ∴ Orbital info ∴ Epoch 57676 MJD

(99942) Apophis ▹

ORBITAL INFORMATION

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(ASCII data file 99942.eq0)

Keplerian elements
(Epoch 57676.1 MJD)
	Value	1-σ variation	Units
a	0.922629	6.695e-11	au
e	0.191521	1.545e-09
i	3.337	1.738e-07	deg
Ω	204.061	8.702e-06	deg
ω	126.684	9.298e-06	deg
M	215.644	1.387e-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	1.0993	au
Asc. node-Earth separation	0.00239	au
Desc. node-Earth separation	-0.19889	au
Earth MOID	0.0007	au
Orbital period	323.698	days
Date of orbit computation	apr 20 2021

Covariance matrix
4.48264482E-21	-7.89141735E-20	3.13116419E-18	-2.59896416E-16	2.27250577E-16	3.01842797E-17	3.54756913E-17
-7.89141735E-20	2.38728862E-18	8.06699132E-17	-2.12901742E-15	3.55502912E-15	-1.74854827E-15	-4.46959407E-15
3.13116419E-18	8.06699132E-17	3.01933635E-14	-1.44427117E-12	1.56816924E-12	-1.90628577E-13	-2.93269564E-13
-2.59896416E-16	-2.12901742E-15	-1.44427117E-12	7.57206963E-11	-8.05522700E-11	7.98222160E-12	-2.63695036E-13
2.27250577E-16	3.55502912E-15	1.56816924E-12	-8.05522700E-11	8.64574068E-11	-9.40059720E-12	2.67578330E-13
3.01842797E-17	-1.74854827E-15	-1.90628577E-13	7.98222160E-12	-9.40059720E-12	1.92430046E-12	7.56328674E-13
3.54756913E-17	-4.46959407E-15	-2.93269564E-13	-2.63695036E-13	2.67578330E-13	7.56328674E-13	6.06089396E-12

Correlation matrix
1.00000000	-0.76284338	0.26914290	-0.44609343	0.36503687	0.32499540	0.21522631
-0.76284338	1.00000000	0.30047156	-0.15835050	0.24745122	-0.81580943	-1.17502546
0.26914290	0.30047156	1.00000000	-0.95518104	0.97059060	-0.79085309	-0.68555595
-0.44609343	-0.15835050	-0.95518104	1.00000000	-0.99556445	0.66127186	-0.01230910
0.36503687	0.24745122	0.97059060	-0.99556445	1.00000000	-0.72881600	0.01168911
0.32499540	-0.81580943	-0.79085309	0.66127186	-0.72881600	1.00000000	0.22146535
0.21522631	-1.17502546	-0.68555595	-0.01230910	0.01168911	0.22146535	1.00000000