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(2012 HX87)
Classification: TransNeptunian Object          SPK-ID: 3841260
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6710667830346383 3.8194e-05  
a 106.0129552853291 0.013104 au
q 34.87118242200835 0.0003194 au
i 12.67873038732495 4.6081e-05 deg
node 271.8277868387669 0.00029938 deg
peri 285.5239433233289 0.0018817 deg
M 4.353354466753752 0.00090389 deg
tp 2454179.264245571285
(2007-Mar-19.76424557)
0.28803 TDB
period 398691.3734797683
1091.56
73.925
0.2024
d
yr
n .0009029540741198613 1.6742e-07 deg/d
Q 177.1547281486499 0.021898 au
  Orbit Determination Parameters
   # obs. used (total)      76  
   data-arc span      3331 days (9.12 yr)  
   first obs. used      2011-04-02  
   last obs. used      2020-05-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .75065  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 13:24:52  

Additional Information
 Earth MOID = 33.893 au 
 Jupiter MOID = 29.5874 au 
 T_jup = 6.579 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 6.7   .38542 MPO466395 autocmod 2.6q
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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