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(2012 HM)
Classification: Apollo [NEO]          SPK-ID: 3602622
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

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.


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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456040.5 (2012-Apr-23.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1957929185678518 1.7027e-06  
q .9367163734327769 4.9458e-07 au
tp 2456093.640190158354
(2012-Jun-15.14019016)
0.0001056 TDB
node 39.16932645662711 1.0424e-05 deg
peri 233.1012268299139 8.6315e-05 deg
i 6.983733249909036 4.9347e-05 deg
  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
 Jupiter MOID = 3.66048 au 
 T_jup = 5.352 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.89921272923645E-12 -7.644232659540022E-13 -1.353462766429521E-10 -1.263640452834428E-11 -3.847181328911663E-11 8.252723924442936E-11
q -7.644232659540022E-13 2.446104709126854E-13 2.126066261728423E-11 2.413983666748756E-12 -7.094018366909102E-12 -2.191477699368119E-11
tp -1.353462766429521E-10 2.126066261728423E-11 1.115191726701722E-8 8.959395147660969E-10 7.573174285834235E-9 -3.800740178258491E-9
node -1.263640452834428E-11 2.413983666748756E-12 8.959395147660969E-10 1.086587935632022E-10 4.99083096938838E-10 -4.053054150073075E-10
peri -3.847181328911663E-11 -7.094018366909102E-12 7.573174285834235E-9 4.99083096938838E-10 7.450282526092773E-9 -9.837667124991081E-10
i 8.252723924442936E-11 -2.191477699368119E-11 -3.800740178258491E-9 -4.053054150073075E-10 -9.837667124991081E-10 2.435106206140145E-9

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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