AstDyS-2
Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ 2009ER21 ∴ Orbital info ∴ Epoch epochXXX
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(312540) 2009ER21  ▹ 
ORBITAL INFORMATION
◲
(ASCII data file 312540.eq0)
Keplerian elements at epoch
58424.7 MJD
Value 1-σ variation Units
a 2.26141 1.716e-08 au
e 0.15107 5.024e-08
i 23.778 7.005e-06 deg
Ω 307.95 1.268e-05 deg
ω 299.011 3.77e-05 deg
M 245.876 3.957e-05 deg
Other useful info
Absolute Magnitude (H)    16.5 mag
Slope parameter (G)    0.15 mag
Perihelion 1.9198 au
Aphelion 2.603 au
Asc. node-Earth separation 1.04383 au
Desc. node-Earth separation 1.39894 au
Earth MOID 0.98176 au
Orbital period 1242.13 days
Date of orbit computation  apr 23 20:55
Correlation matrix
1.000000000.528880070.00304520-0.003460450.11500139-0.15252450
0.528880071.00000000-0.029526350.002667170.31014907-0.38713726
0.00304520-0.029526351.000000000.53161722-0.260304290.09962384
-0.003460450.002667170.531617221.00000000-0.23653155-0.06937605
0.115001390.31014907-0.26030429-0.236531551.00000000-0.94597979
-0.15252450-0.387137260.09962384-0.06937605-0.945979791.00000000
Covariance matrix
2.94493131E-164.55973797E-163.66042932E-16-7.53152356E-167.43929263E-14-1.03579942E-13
4.55973797E-162.52400490E-15-1.03904233E-141.69945214E-155.87362925E-13-7.69677074E-13
3.66042932E-16-1.03904233E-144.90633013E-114.72270278E-11-6.87306827E-112.76146877E-11
-7.53152356E-161.69945214E-154.72270278E-111.60851967E-10-1.13081931E-10-3.48193955E-11
7.43929263E-145.87362925E-13-6.87306827E-11-1.13081931E-101.42096016E-09-1.41114386E-09
-1.03579942E-13-7.69677074E-132.76146877E-11-3.48193955E-11-1.41114386E-091.56601875E-09