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JPL Small-Body Database Browser
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(2015 HL171)
Classification: Apollo [NEO]          SPK-ID: 3718432
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 2457141.5 (2015-Apr-29.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2564577365185572 0.00067407  
a 1.290986879407771 0.0011895 au
q .9599033064396982 1.4236e-05 au
i 27.23160497651498 0.03489 deg
node 39.96159363464013 0.0012556 deg
peri 226.3017011670779 0.04792 deg
M 330.4523110551257 0.076198 deg
tp 2457185.474629314279
(2015-Jun-11.97462931)
0.052628 TDB
period 535.7734265673139
1.47
0.74047
0.002027
d
yr
n .6719258219029458 0.00092863 deg/d
Q 1.622070452375843 0.0014945 au
  Orbit Determination Parameters
   # obs. used (total)      48  
   data-arc span      5 days  
   first obs. used      2015-04-28  
   last obs. used      2015-05-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .34192  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:34:02  

Additional Information
 Earth MOID = .01615 au 
 Jupiter MOID = 3.47642 au 
 T_jup = 4.887 
[ 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 24.2   n/a MPO346332  

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