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JPL Small-Body Database Browser
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(2021 JY9)
Classification: Apollo [NEO]          SPK-ID: 54146076
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

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 2459351.5 (2021-May-17.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3791977177374336 0.001134  
a 1.613451508363996 0.0029042 au
q 1.001634378712349 2.6734e-05 au
i 9.206557895327206 0.019195 deg
node 63.82117926579964 0.0017968 deg
peri 194.3604328391786 0.0019871 deg
M 350.4598988787467 0.027583 deg
tp 2459371.337310005265
(2021-Jun-05.83731001)
0.0037973 TDB
period 748.569801423362
2.05
2.0212
0.005534
d
yr
n .4809170758898915 0.0012985 deg/d
Q 2.225268638015643 0.0040055 au
  Orbit Determination Parameters
   # obs. used (total)      22  
   data-arc span      5 days  
   first obs. used      2021-05-15  
   last obs. used      2021-05-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      8  
   norm. resid. RMS      .71593  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-21 05:50:01  

Additional Information
 Earth MOID = .0022316 au 
 Jupiter MOID = 2.84557 au 
 T_jup = 4.242 
[ 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 26.78   .53299 MPO622873 autocmod 2.9c

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