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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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2661285953971084 0.00014976  
a 1.172236334310281 0.00016379 au
q .8602707251868308 5.5366e-05 au
i 9.118896153678575 0.0039967 deg
node 42.08189812799409 0.00090809 deg
peri 250.960734598578 0.00061161 deg
M 111.5901009478145 0.31871 deg
tp 2459056.804104124571
(2020-Jul-26.30410412)		 0.38028 TDB
period 463.576267749292
1.27		 0.097159
0.000266		 d
yr
n .7765712462974759 0.00016276 deg/d
Q 1.484201943433731 0.00020738 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      6  
   norm. resid. RMS      .40136  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 13:38:41  

Additional Information
 Earth MOID = .00371066 au 
 Jupiter MOID = 3.69404 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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