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JPL Small-Body Database Browser
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(2015 HT9)
Classification: Apollo [NEO]          SPK-ID: 3716635
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3137312947128886 8.0207e-05  
a 1.424738484899278 0.00015456 au
q .9777534354045485 8.2058e-06 au
i 4.797096257321968 0.0010301 deg
node 226.0928593243678 0.00037794 deg
peri 46.89765343518823 0.00074085 deg
M 94.87415514642896 0.13232 deg
tp 2458436.800790956878
(2018-Nov-14.30079096)
0.20168 TDB
period 621.1566802841984
1.70
0.10108
0.0002767
d
yr
n .5795639190989444 9.4309e-05 deg/d
Q 1.871723534394008 0.00020305 au
  Orbit Determination Parameters
   # obs. used (total)      26  
   data-arc span      36 days  
   first obs. used      2015-04-18  
   last obs. used      2015-05-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .40775  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Feb-10 07:06:36  

Additional Information
 Earth MOID = .0201556 au 
 Jupiter MOID = 3.24156 au 
 T_jup = 4.642 
[ 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 26.0   n/a MPO438013  

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