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Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ 1997EF9 ∴ Orbital info ∴ Epoch epochXXX
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(285216) 1997EF9  ▹ 
ORBITAL INFORMATION
◲
(ASCII data file 285216.eq0)
Keplerian elements at epoch
57781.9 MJD
Value 1-σ variation Units
a 2.97434 2.758e-08 au
e 0.057583 6.144e-08
i 10.151 6.009e-06 deg
Ω 357.564 3.278e-05 deg
ω 331.568 5.87e-05 deg
M 167.388 4.924e-05 deg
Other useful info
Absolute Magnitude (H)    16.1 mag
Slope parameter (G)    0.15 mag
Perihelion 2.8031 au
Aphelion 3.1456 au
Asc. node-Earth separation 1.81593 au
Desc. node-Earth separation 2.12705 au
Earth MOID 1.79538 au
Orbital period 1873.63 days
Date of orbit computation  apr 23 20:50
Correlation matrix
1.000000000.213821600.01186404-0.003848050.08070757-0.10455064
0.213821601.00000000-0.008861490.00294301-0.00488655-0.03197809
0.01186404-0.008861491.00000000-0.093118370.045914630.00585522
-0.003848050.00294301-0.093118371.00000000-0.53704816-0.01300487
0.08070757-0.004886550.04591463-0.537048161.00000000-0.83282596
-0.10455064-0.031978090.00585522-0.01300487-0.832825961.00000000
Covariance matrix
7.60572949E-163.62329400E-161.96608236E-15-3.47826677E-151.30653890E-13-1.41978956E-13
3.62329400E-163.77540124E-15-3.27180056E-155.92687261E-15-1.76246750E-14-9.67522020E-14
1.96608236E-15-3.27180056E-153.61074989E-11-1.83394292E-111.61952412E-111.73248080E-12
-3.47826677E-155.92687261E-15-1.83394292E-111.07424538E-09-1.03324334E-09-2.09886601E-11
1.30653890E-13-1.76246750E-141.61952412E-11-1.03324334E-093.44568252E-09-2.40723626E-09
-1.41978956E-13-9.67522020E-141.73248080E-12-2.09886601E-11-2.40723626E-092.42467573E-09