NEODyS-2
Near Earth Objects - Dynamic Site
NEODyS ∴ Objects ∴ 2009HD21 ∴ Orbital info ∴ Epoch 59359 MJD
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2009HD21  ▹ 
ORBITAL INFORMATION
◲
(ASCII data file 2009HD21.eq0)
Keplerian elements
(Epoch 59359.4 MJD)
Value 1-σ variation Units
a 2.77193 8.851e-09 au
e 0.688165 2.439e-08
i 18.645 6.426e-06 deg
Ω 179.225 1.642e-05 deg
ω 134.271 1.756e-05 deg
M 198.318 4.798e-06 deg
Other useful info
Absolute Magnitude (H)    18.3 mag
Slope parameter (G)    0.15 mag
Perihelion distance 0.8644 au
Aphelion distance 4.6795 au
Asc. node-Earth separation 1.8132 au
Desc. node-Earth separation -0.01658 au
Earth MOID 0.01115 au
Orbital period 1685.66 days
Date of orbit computation   feb 26 10:36

Covariance matrix
7.83438030E-17-6.97982659E-17-1.16626755E-141.21183212E-143.83999383E-14-4.17158539E-14
-6.97982659E-175.95048569E-163.10809893E-141.23935897E-13-2.48663158E-133.80773022E-14
-1.16626755E-143.10809893E-144.12894480E-115.03803104E-11-5.64943379E-116.46580104E-12
1.21183212E-141.23935897E-135.03803104E-112.69655191E-10-2.54083417E-10-3.54915115E-12
3.83999383E-14-2.48663158E-13-5.64943379E-11-2.54083417E-103.08424596E-10-2.59906338E-11
-4.17158539E-143.80773022E-146.46580104E-12-3.54915115E-12-2.59906338E-112.30194758E-11

Correlation matrix
1.00000000-0.32327052-0.205057820.083374980.24703228-0.98231573
-0.323270521.000000000.198289210.30939730-0.580444550.32534359
-0.205057820.198289211.000000000.47745991-0.500623100.20972736
0.083374980.309397300.477459911.00000000-0.88104365-0.04504768
0.24703228-0.58044455-0.50062310-0.881043651.00000000-0.30845702
-0.982315730.325343590.20972736-0.04504768-0.308457021.00000000