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(2015 HQ171)
Classification: Apollo [NEO]          SPK-ID: 3718762
[ 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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2661169110686054 0.00014974  
a 1.172223681023706 0.00016367 au
q .8602751359482069 5.542e-05 au
i 9.118596237542537 0.003995 deg
node 42.08196100021948 0.00090357 deg
peri 250.9607624336151 0.00062977 deg
M 111.614738751334 0.31864 deg
tp 2459056.774704851374
(2020-Jul-26.27470485)		 0.38021 TDB
period 463.5687619067864
1.27		 0.097086
0.0002658		 d
yr
n .7765838200987066 0.00016264 deg/d
Q 1.484172226099204 0.00020722 au
   Orbit Determination Parameters
   # obs. used (total)      51  
   data-arc span      3 days  
   first obs. used      2015-04-28  
   last obs. used      2015-05-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .40225  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Feb-10 07:06:43  

Additional Information
 Earth MOID = .00371094 au 
 Jupiter MOID = 3.69406 au 
 T_jup = 5.342 
[ 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 26.8   n/a MPO438014  

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