NEODyS

NEODyS-2

Near Earth Objects - Dynamic Site

NEODyS ∴ Objects ∴ 2004ER21 ∴ Orbital info ∴ Epoch 60400 MJD

2004ER21 ▹

ORBITAL INFORMATION

◲

(ASCII data file 2004ER21.eq1)

Keplerian elements
(Epoch 60400.0 MJD)
	Value	1-σ variation	Units
a	0.899118	0.0002234	au
e	0.171034	0.0008518
i	7.95	0.03622	deg
Ω	357.259	0.02649	deg
ω	343.534	0.09076	deg
M	14.103	1.198	deg

Other useful info
Absolute Magnitude (H)	24.3	mag
Slope parameter (G)	0.15	mag
Perihelion distance	0.7453	au
Aphelion distance	1.0529	au
Asc. node-Earth separation	-0.25385	au
Desc. node-Earth separation	0.04896	au
Earth MOID	0.0407	au
Orbital period	311.404	days
Date of orbit computation	feb 26 10:27

Covariance matrix
4.98980628E-08	1.90261522E-07	8.09114648E-06	5.91708518E-06	-2.02704105E-05	2.67649636E-04
1.90261522E-07	7.25505397E-07	3.08539950E-05	2.25615150E-05	-7.73013463E-05	1.02055144E-03
8.09114648E-06	3.08539950E-05	1.31217198E-03	9.59452976E-04	-3.28756298E-03	4.34004695E-02
5.91708518E-06	2.25615150E-05	9.59452976E-04	7.01672053E-04	-2.40363961E-03	3.17388000E-02
-2.02704105E-05	-7.73013463E-05	-3.28756298E-03	-2.40363961E-03	8.23739781E-03	-1.08729663E-01
2.67649636E-04	1.02055144E-03	4.34004695E-02	3.17388000E-02	-1.08729663E-01	1.43565363E+00

Correlation matrix
1.00000000	0.99997421	0.99993747	0.99999744	-0.99982889	0.99999995
0.99997421	1.00000000	0.99999010	0.99995590	-0.99993487	0.99997638
0.99993747	0.99999010	1.00000000	0.99991072	-0.99996243	0.99994062
0.99999744	0.99995590	0.99991072	1.00000000	-0.99978644	0.99999672
-0.99982889	-0.99993487	-0.99996243	-0.99978644	1.00000000	-0.99983466
0.99999995	0.99997638	0.99994062	0.99999672	-0.99983466	1.00000000