NEODyS-2
Near Earth Objects - Dynamic Site
NEODyS ∴ Objects ∴ 2021ER4 ∴ Orbital info ∴ Epoch 60400 MJD
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2021ER4  ▹ 
ORBITAL INFORMATION
◲
(ASCII data file 2021ER4.eq1)
Keplerian elements
(Epoch 60400.0 MJD)
Value 1-σ variation Units
a 0.863443 2.023e-05 au
e 0.459707 0.0003108
i 1.957 0.001951 deg
Ω 353.98 0.001039 deg
ω 43.435 0.003537 deg
M 14.636 0.07709 deg
Other useful info
Absolute Magnitude (H)    27.2 mag
Slope parameter (G)    0.15 mag
Perihelion distance 0.4665 au
Aphelion distance 1.2604 au
Asc. node-Earth separation -0.49409 au
Desc. node-Earth separation 0.02805 au
Earth MOID 0.00202 au
Orbital period 293.055 days
Date of orbit computation   feb 26 12:08

Covariance matrix
4.09176001E-103.75943260E-092.85517440E-08-1.62469801E-08-1.10543308E-08-1.45703851E-06
3.75943260E-099.66078658E-085.96594489E-07-3.13099767E-07-9.71792617E-07-2.02317458E-05
2.85517440E-085.96594489E-073.80530160E-06-2.01774398E-06-5.46010291E-06-1.38528459E-04
-1.62469801E-08-3.13099767E-07-2.01774398E-061.07871849E-062.73714528E-067.59177696E-05
-1.10543308E-08-9.71792617E-07-5.46010291E-062.73714528E-061.25074500E-051.35321674E-04
-1.45703851E-06-2.02317458E-05-1.38528459E-047.59177696E-051.35321674E-045.94323798E-03

Correlation matrix
1.000000000.597944650.72357412-0.77332760-0.15452295-0.93433882
0.597944651.000000000.98396228-0.96988990-0.88406249-0.84433648
0.723574120.983962281.00000000-0.99590395-0.79144711-0.92115540
-0.77332760-0.96988990-0.995903951.000000000.745176930.94815168
-0.15452295-0.88406249-0.791447110.745176931.000000000.49633102
-0.93433882-0.84433648-0.921155400.948151680.496331021.00000000