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(2015 HE1)
Classification: Apollo [NEO]          SPK-ID: 3716437
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 2457131.5 (2015-Apr-19.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4920540982793941 0.00070431  
a 1.4189478307338 0.0014252 au
q .7207487353765776 0.00027548 au
i 3.452665722297381 0.0043693 deg
node 212.2414739670452 0.00040608 deg
peri 79.52308064279867 0.00051766 deg
M 327.8695935712653 0.064365 deg
tp 2457186.601292717693
(2015-Jun-13.10129272)
0.027366 TDB
period 617.3736215371815
1.69
0.93014
0.002547
d
yr
n .5831152926547881 0.00087853 deg/d
Q 2.117146926091022 0.0021265 au
  Orbit Determination Parameters
   # obs. used (total)      40  
   data-arc span      2 days  
   first obs. used      2015-04-18  
   last obs. used      2015-04-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .40565  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:34:21  

Additional Information
 Earth MOID = .00237681 au 
 Jupiter MOID = 3.08773 au 
 T_jup = 4.575 
[ 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 26.5   n/a MPO337063  

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