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(2012 DH4)
Classification: Apollo [NEO]          SPK-ID: 3599480
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 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5774722036977559 5.9702e-08  
a 2.030690360473078 7.3766e-08 au
q .8580231229828993 9.975e-08 au
i 14.47974532058894 1.5542e-05 deg
node 169.1141369089081 7.6176e-06 deg
peri 69.06661401016218 1.6929e-05 deg
M 285.3957315515776 5.6086e-05 deg
tp 2459219.540873723059
(2021-Jan-05.04087372)
0.00017659 TDB
period 1056.973229284024
2.89
5.7593e-05
1.577e-07
d
yr
n .3405951920313611 1.8558e-08 deg/d
Q 3.203357597963256 1.1636e-07 au
  Orbit Determination Parameters
   # obs. used (total)      367  
   # delay obs. used      0  
   # Doppler obs. used      2  
   data-arc span      1327 days (3.63 yr)  
   first obs. used      2012-02-18  
   last obs. used      2015-10-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37204  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:50:54  

Additional Information
 Earth MOID = .062503 au 
 Jupiter MOID = 2.0027 au 
 T_jup = 3.550 
[ 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 20.7   n/a MPO237416  

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