NEODyS-2
Near Earth Objects - Dynamic Site
NEODyS ∴ Objects ∴ 1998US18 ∴ Orbital info ∴ Epoch 60400 MJD
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1998US18  ▹ 
ORBITAL INFORMATION
◲
(ASCII data file 1998US18.eq1)
Keplerian elements
(Epoch 60400.0 MJD)
Value 1-σ variation Units
a 2.60642 8.93e-08 au
e 0.676415 1.425e-06
i 9.658 5.785e-05 deg
Ω 207.255 2.814e-05 deg
ω 115.483 0.0004869 deg
M 27.611 6.83e-05 deg
Other useful info
Absolute Magnitude (H)    21.1 mag
Slope parameter (G)    0.15 mag
Perihelion distance 0.8434 au
Aphelion distance 4.3694 au
Asc. node-Earth separation 0.98996 au
Desc. node-Earth separation 0.10041 au
Earth MOID 0.03369 au
Orbital period 1536.97 days
Date of orbit computation   feb 26 10:22

Covariance matrix
7.97378017E-15-1.27054668E-13-4.24730865E-126.15909118E-134.34069216E-11-6.09487833E-12
-1.27054668E-132.03005751E-126.78379351E-11-9.02371452E-12-6.92332549E-109.69831726E-11
-4.24730865E-126.78379351E-113.34674616E-09-1.98047742E-10-2.33947867E-083.26628139E-09
6.15909118E-13-9.02371452E-12-1.98047742E-107.91904827E-102.67720234E-09-4.90173092E-10
4.34069216E-11-6.92332549E-10-2.33947867E-082.67720234E-092.37068576E-07-3.31779496E-08
-6.09487833E-129.69831726E-113.26628139E-09-4.90173092E-10-3.31779496E-084.66475357E-09

Correlation matrix
1.00000000-0.99862935-0.822186430.245102650.99836618-0.99935217
-0.998629351.000000000.82301370-0.22505812-0.997984010.99661602
-0.822186430.823013701.00000000-0.12165277-0.830559420.82666178
0.24510265-0.22505812-0.121652771.000000000.19539242-0.25503432
0.99836618-0.99798401-0.830559420.195392421.00000000-0.99769592
-0.999352170.996616020.82666178-0.25503432-0.997695921.00000000