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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3138349813629797 7.9024e-05  
a 1.424838856174318 0.00015168 au
q .9776745803016016 8.5199e-06 au
i 4.797198943800175 0.0010288 deg
node 226.0821955987273 0.00032068 deg
peri 46.92111657716683 0.00064165 deg
M 82.52144052323135 0.18853 deg
tp 2459058.099553257938
(2020-Jul-27.59955326)
0.30259 TDB
period 621.2223211579843
1.70
0.099198
0.0002716
d
yr
n .5795026800211315 9.2537e-05 deg/d
Q 1.872003132047034 0.00019928 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      6  
   norm. resid. RMS      .43328  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 13:32:18  

Additional Information
 Earth MOID = .0195614 au 
 Jupiter MOID = 3.24127 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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