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(2012 HN1)
Classification: Apollo [NEO]          SPK-ID: 3602687
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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .15313373824341 0.00022401  
a 1.025922700109628 6.8531e-05 au
q .8688193218930683 0.00017179 au
i 2.405254876668007 0.0036274 deg
node 194.751358042015 0.0050749 deg
peri 108.7775096929294 0.013619 deg
M 215.0366762849116 0.27484 deg
tp 2459153.336126758163
(2020-Oct-30.83612676)
0.30508 TDB
period 379.5512149064502
1.04
0.038031
0.0001041
d
yr
n .9484885988014315 9.5038e-05 deg/d
Q 1.183026078326189 7.9026e-05 au
  Orbit Determination Parameters
   # obs. used (total)      30  
   data-arc span      6 days  
   first obs. used      2012-04-17  
   last obs. used      2012-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .69031  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:50:04  

Additional Information
 Earth MOID = .0110347 au 
 Jupiter MOID = 3.94465 au 
 T_jup = 5.949 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456037.5 (2012-Apr-20.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1539761652783805 0.00022447  
q .8697093814458702 0.00016236 au
tp 2456117.129770404520
(2012-Jul-08.62977040)
0.021741 TDB
node 195.7964373778011 0.0014523 deg
peri 107.6112508205997 0.004872 deg
i 2.498077705251335 0.0034254 deg
  Orbit Determination Parameters
   # obs. used (total)      30  
   data-arc span      6 days  
   first obs. used      2012-04-17  
   last obs. used      2012-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .69031  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:50:04  

Additional Information
 Jupiter MOID = 3.94465 au 
 T_jup = 5.949 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.038511251148405E-8 -3.644394638100545E-8 -4.879585218113131E-6 3.14503333741476E-7 -1.079934551451082E-6 7.687491014383732E-7
q -3.644394638100545E-8 2.636113383158969E-8 3.529150826867139E-6 -2.271718315250873E-7 7.804087312292452E-7 -5.559881257410836E-7
tp -4.879585218113131E-6 3.529150826867139E-6 .000472657395940475 -3.055524593615361E-5 .0001048095114346886 -7.446694441662704E-5
node 3.14503333741476E-7 -2.271718315250873E-7 -3.055524593615361E-5 2.109297796040086E-6 -7.021626352890914E-6 4.823795695703786E-6
peri -1.079934551451082E-6 7.804087312292452E-7 .0001048095114346886 -7.021626352890914E-6 2.373670230191551E-5 -1.65257194005341E-5
i 7.687491014383732E-7 -5.559881257410836E-7 -7.446694441662704E-5 4.823795695703786E-6 -1.65257194005341E-5 1.17335647369754E-5

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 27.0   n/a MPO232623  

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