AstDyS-2
Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ 2009ER21 ∴ Orbital info ∴ Epoch epochXXX
Contact »
(312540) 2009ER21  ▹ 
ORBITAL INFORMATION
◲
(ASCII data file 312540.eq1)
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 2.26127 1.714e-08 au
e 0.150702 5.007e-08
i 23.781 7.007e-06 deg
Ω 307.936 1.268e-05 deg
ω 298.774 3.787e-05 deg
M 98.653 4.131e-05 deg
Other useful info
Absolute Magnitude (H)    16.5 mag
Slope parameter (G)    0.15 mag
Perihelion 1.9205 au
Aphelion 2.602 au
Asc. node-Earth separation 1.04559 au
Desc. node-Earth separation 1.39838 au
Earth MOID 0.98326 au
Orbital period 1242.01 days
Date of orbit computation  feb 22 02:56
Correlation matrix
1.000000000.53449588-0.00057364-0.002302150.12936227-0.31815242
0.534495881.00000000-0.029381560.001634000.30601615-0.45111615
-0.00057364-0.029381561.000000000.53187946-0.259344150.09549574
-0.002302150.001634000.531879461.00000000-0.23435186-0.06689099
0.129362270.30601615-0.25934415-0.234351861.00000000-0.93054247
-0.31815242-0.451116150.09549574-0.06689099-0.930542471.00000000
Covariance matrix
2.93727962E-164.58628277E-16-6.88856817E-17-5.00315336E-168.39566061E-14-2.25257995E-13
4.58628277E-162.50661505E-15-1.03071565E-141.03736616E-155.80180042E-13-9.33049176E-13
-6.88856817E-17-1.03071565E-144.90953616E-114.72574408E-11-6.88131280E-112.76424532E-11
-5.00315336E-161.03736616E-154.72574408E-111.60795355E-10-1.12532966E-10-3.50410178E-11
8.39566061E-145.80180042E-13-6.88131280E-11-1.12532966E-101.43400025E-09-1.45573777E-09
-2.25257995E-13-9.33049176E-132.76424532E-11-3.50410178E-11-1.45573777E-091.70665083E-09