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JPL Small-Body Database Browser
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(2015 HJ)
Classification: Amor [NEO]          SPK-ID: 3715996
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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1661216907171543 0.00023865  
a 1.219753139410539 0.00037676 au
q 1.017125685634104 2.3124e-05 au
i 13.28983791930869 0.013667 deg
node 204.9895889196208 0.00079712 deg
peri 338.1794317985882 0.010638 deg
M 305.8568868066756 0.67192 deg
tp 2459074.502615047431
(2020-Aug-13.00261505)
0.95266 TDB
period 492.0467229497941
1.35
0.22798
0.0006242
d
yr
n .7316378368335004 0.00033898 deg/d
Q 1.422380593186975 0.00043935 au
  Orbit Determination Parameters
   # obs. used (total)      35  
   data-arc span      7 days  
   first obs. used      2015-04-16  
   last obs. used      2015-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .61027  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:34:23  

Additional Information
 Earth MOID = .0238673 au 
 Jupiter MOID = 3.54114 au 
 T_jup = 5.195 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457130.5 (2015-Apr-18.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1663449179805852 0.00024687  
q 1.016894225160987 2.5858e-05 au
tp 2457106.698342113046
(2015-Mar-25.19834211)
0.014642 TDB
node 205.0344500185398 4.4687e-05 deg
peri 338.0341323947496 0.013613 deg
i 13.30760864124619 0.013578 deg
  Orbit Determination Parameters
   # obs. used (total)      35  
   data-arc span      7 days  
   first obs. used      2015-04-16  
   last obs. used      2015-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .61027  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:34:23  

Additional Information
 Jupiter MOID = 3.54114 au 
 T_jup = 5.195 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.094687042889189E-8 6.373487053152743E-9 3.606235521851941E-6 1.023942700860269E-8 3.35012572098483E-6 3.351924299638977E-6
q 6.373487053152743E-9 6.686456630522348E-10 3.785640804584754E-7 1.050922546102745E-9 3.518960765827569E-7 3.506015757303441E-7
tp 3.606235521851941E-6 3.785640804584754E-7 .0002143806238300338 5.925816901381228E-7 .0001993038618231964 .0001983730213047078
node 1.023942700860269E-8 1.050922546102745E-9 5.925816901381228E-7 1.996965455358827E-9 5.484017835863411E-7 5.627662191352213E-7
peri 3.35012572098483E-6 3.518960765827569E-7 .0001993038618231964 5.484017835863411E-7 .000185309535966153 .0001842912901148685
i 3.351924299638977E-6 3.506015757303441E-7 .0001983730213047078 5.627662191352213E-7 .0001842912901148685 .0001843583673743942

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 MPO349338  

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