NEODyS-2
Near Earth Objects - Dynamic Site
NEODyS ∴ Objects ∴ 2021ER4 ∴ Orbital info ∴ Epoch 59288 MJD
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2021ER4  ▹ 
ORBITAL INFORMATION
◲
(ASCII data file 2021ER4.eq0)
Keplerian elements
(Epoch 59288.7 MJD)
Value 1-σ variation Units
a 0.863443 2.138e-05 au
e 0.459789 0.0003103
i 1.958 0.001949 deg
Ω 354.003 0.0008152 deg
ω 43.385 0.003787 deg
M 89.48 0.03539 deg
Other useful info
Absolute Magnitude (H)    27.2 mag
Slope parameter (G)    0.15 mag
Perihelion distance 0.4664 au
Aphelion distance 1.2604 au
Asc. node-Earth separation -0.49636 au
Desc. node-Earth separation 0.02827 au
Earth MOID 0.00203 au
Orbital period 293.055 days
Date of orbit computation   Jul 29 12:54

Covariance matrix
4.57231911E-104.20131635E-093.14129285E-08-1.40195071E-08-2.00427669E-08-5.20134389E-07
4.20131635E-099.62667165E-085.95178763E-07-2.44853842E-07-1.06494795E-06-1.09529995E-05
3.14129285E-085.95178763E-073.80051367E-06-1.58176122E-06-6.06136975E-06-6.85497073E-05
-1.40195071E-08-2.44853842E-07-1.58176122E-066.64544104E-072.38820019E-062.83685972E-05
-2.00427669E-08-1.06494795E-06-6.06136975E-062.38820019E-061.43398634E-051.17091470E-04
-5.20134389E-07-1.09529995E-05-6.85497073E-052.83685972E-051.17091470E-041.25269993E-03

Correlation matrix
1.000000000.633255600.75356203-0.80427130-0.24752376-0.68726428
0.633255601.000000000.98398436-0.96807040-0.90639561-0.99740481
0.753562030.983984361.00000000-0.99530886-0.82106421-0.99348412
-0.80427130-0.96807040-0.995308861.000000000.773635370.98322391
-0.24752376-0.90639561-0.821064210.773635371.000000000.87363339
-0.68726428-0.99740481-0.993484120.983223910.873633391.00000000