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(2012 HM)
Classification: Apollo [NEO]          SPK-ID: 3602622
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1976013217463577 1.6687e-06  
a 1.175233658468859 1.7822e-06 au
q .943005934194605 5.9274e-07 au
i 7.148403421248402 4.7062e-05 deg
node 39.01488330369373 7.3117e-06 deg
peri 230.2038423038254 0.00010063 deg
M 90.88560938907331 0.0051885 deg
tp 2458883.016363408352
(2020-Feb-03.51636341)
0.0064397 TDB
period 465.3554006766453
1.27
0.0010585
2.898e-06
d
yr
n .7736022822052686 1.7597e-06 deg/d
Q 1.407461382743113 2.1344e-06 au
  Orbit Determination Parameters
   # obs. used (total)      527  
   # delay obs. used      0  
   # Doppler obs. used      3  
   data-arc span      11 days  
   first obs. used      2012-04-16  
   last obs. used      2012-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      3  
   norm. resid. RMS      .26242  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Feb-10 07:05:04  

Additional Information
 Earth MOID = .00299917 au 
 Jupiter MOID = 3.66048 au 
 T_jup = 5.352 
[ 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 24.1   n/a MPO235400  

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