NEODyS-2
Near Earth Objects - Dynamic Site
NEODyS ∴ Objects ∴ 1999HD1 ∴ Orbital info ∴ Epoch 60400 MJD
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(488474) 1999HD1  ▹ 
ORBITAL INFORMATION
◲
(ASCII data file 488474.eq1)
Keplerian elements
(Epoch 60400.0 MJD)
Value 1-σ variation Units
a 1.13143 2.693e-09 au
e 0.417775 1.234e-07
i 18.219 1.128e-05 deg
Ω 209.861 1.482e-05 deg
ω 147.966 2.758e-05 deg
M 154.144 4.12e-05 deg
Other useful info
Absolute Magnitude (H)    20.4 mag
Slope parameter (G)    0.15 mag
Perihelion distance 0.6587 au
Aphelion distance 1.6041 au
Asc. node-Earth separation 0.44139 au
Desc. node-Earth separation -0.30443 au
Earth MOID 0.2166 au
Orbital period 439.584 days
Date of orbit computation   mar 17 13:38

Covariance matrix
7.24983712E-182.09302861E-16-1.76655307E-153.57449853E-151.03423615E-14-3.88285859E-14
2.09302861E-161.52154896E-142.20671897E-13-1.45564132E-131.14098554E-12-1.77022939E-12
-1.76655307E-152.20671897E-131.27204228E-10-5.52980356E-119.01954890E-11-6.53150857E-11
3.57449853E-15-1.45564132E-13-5.52980356E-112.19724104E-10-2.83112191E-101.41952709E-10
1.03423615E-141.14098554E-129.01954890E-11-2.83112191E-107.60741492E-10-9.49517572E-10
-3.88285859E-14-1.77022939E-12-6.53150857E-111.41952709E-10-9.49517572E-101.69713013E-09

Correlation matrix
1.000000000.63018502-0.058171700.089559600.13926341-0.35004984
0.630185021.000000000.15861830-0.079610900.33536569-0.34836058
-0.058171700.158618301.00000000-0.330765400.28994491-0.14057405
0.08955960-0.07961090-0.330765401.00000000-0.692470320.23245948
0.139263410.335365690.28994491-0.692470321.00000000-0.83565474
-0.35004984-0.34836058-0.140574050.23245948-0.835654741.00000000