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(2009 HU44)
Classification: Aten [NEO]          SPK-ID: 3458579
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6439742578222584 0.00040646  
a .8302009270809791 8.0443e-05 au
q .2955729012206548 0.00030881 au
i 6.636077030218913 0.0086551 deg
node 212.8740259152734 0.0028687 deg
peri 213.6343855691719 0.011411 deg
M 328.0190067196845 0.88112 deg
tp 2459025.044980718048
(2020-Jun-24.54498072)
0.67982 TDB
period 276.2951413374608
0.76
0.040158
0.0001099
d
yr
n 1.302954508202169 0.00018938 deg/d
Q 1.364828952941303 0.00013225 au
  Orbit Determination Parameters
   # obs. used (total)      63  
   data-arc span      21 days  
   first obs. used      2009-04-22  
   last obs. used      2009-05-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .52494  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 09:00:43  

Additional Information
 Earth MOID = .00614556 au 
 Jupiter MOID = 3.96524 au 
 T_jup = 6.875 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 22.6   n/a MPO158645  

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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