NEODyS-2
Near Earth Objects - Dynamic Site
NEODyS ∴ Objects ∴ 1998US18 ∴ Orbital info ∴ Epoch 58046 MJD
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1998US18  ▹ 
ORBITAL INFORMATION
◲
(ASCII data file 1998US18.eq0)
Keplerian elements
(Epoch 58046.1 MJD)
Value 1-σ variation Units
a 2.60413 9.145e-08 au
e 0.676487 1.424e-06
i 9.655 5.787e-05 deg
Ω 207.345 2.803e-05 deg
ω 115.379 0.0004882 deg
M 196.203 3.507e-05 deg
Other useful info
Absolute Magnitude (H)    21.1 mag
Slope parameter (G)    0.15 mag
Perihelion distance 0.8425 au
Aphelion distance 4.3658 au
Asc. node-Earth separation 0.98321 au
Desc. node-Earth separation 0.0994 au
Earth MOID 0.03329 au
Orbital period 1534.94 days
Date of orbit computation   feb 26 10:22

Covariance matrix
8.36234699E-15-1.30010376E-13-4.34641446E-125.76271805E-134.45681637E-11-3.19924737E-12
-1.30010376E-132.02671683E-126.78164531E-11-8.18919001E-12-6.93589238E-104.96080611E-11
-4.34641446E-126.78164531E-113.34850786E-09-1.71325146E-10-2.34655928E-081.68300302E-09
5.76271805E-13-8.18919001E-12-1.71325146E-107.85830537E-102.40161789E-09-2.39916528E-10
4.45681637E-11-6.93589238E-10-2.34655928E-082.40161789E-092.38318672E-07-1.70499050E-08
-3.19924737E-124.96080611E-111.68300302E-09-2.39916528E-10-1.70499050E-081.22970218E-09

Correlation matrix
1.00000000-0.99865938-0.821374820.224801310.99834722-0.99766275
-0.998659381.000000000.82321424-0.20520123-0.997991340.99370104
-0.821374820.823214241.00000000-0.10561631-0.830666760.82939089
0.22480131-0.20520123-0.105616311.000000000.17549325-0.24405952
0.99834722-0.99799134-0.830666760.175493251.00000000-0.99596243
-0.997662750.993701040.82939089-0.24405952-0.995962431.00000000