NEODyS-2
Near Earth Objects - Dynamic Site
NEODyS ∴ Objects ∴ 2009HD21 ∴ Orbital info ∴ Epoch 60400 MJD
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2009HD21  ▹ 
ORBITAL INFORMATION
◲
(ASCII data file 2009HD21.eq1)
Keplerian elements
(Epoch 60400.0 MJD)
Value 1-σ variation Units
a 2.77013 8.551e-09 au
e 0.688071 2.437e-08
i 18.65 6.428e-06 deg
Ω 179.191 1.642e-05 deg
ω 134.295 1.756e-05 deg
M 60.561 5.841e-06 deg
Other useful info
Absolute Magnitude (H)    18.3 mag
Slope parameter (G)    0.15 mag
Perihelion distance 0.8641 au
Aphelion distance 4.6762 au
Asc. node-Earth separation 1.81218 au
Desc. node-Earth separation -0.01789 au
Earth MOID 0.01204 au
Orbital period 1684.02 days
Date of orbit computation   feb 26 10:36

Covariance matrix
7.31272494E-17-6.53077148E-17-1.11474961E-141.14231908E-143.58023939E-14-4.92001331E-14
-6.53077148E-175.94017087E-163.09724315E-141.23590500E-13-2.48555505E-134.64384048E-14
-1.11474961E-143.09724315E-144.13168597E-115.04302252E-11-5.65534096E-117.86348774E-12
1.14231908E-141.23590500E-135.04302252E-112.69600512E-10-2.53985918E-10-4.99583811E-12
3.58023939E-14-2.48555505E-13-5.65534096E-11-2.53985918E-103.08499080E-10-3.05679026E-11
-4.92001331E-144.64384048E-147.86348774E-12-4.99583811E-12-3.05679026E-113.41215501E-11

Correlation matrix
1.00000000-0.31334690-0.202802850.081355600.23836666-0.98494569
-0.313346901.000000000.197702510.30883411-0.580626670.32618460
-0.202802850.197702511.000000000.47782283-0.500919810.20942918
0.081355600.308834110.477822831.00000000-0.88068854-0.05208751
0.23836666-0.58062667-0.50091981-0.880688541.00000000-0.29793692
-0.984945690.326184600.20942918-0.05208751-0.297936921.00000000