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JPL Small-Body Database Browser
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(1999 HD12)
Classification: Centaur          SPK-ID: 3031995
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2451301.5 (1999-May-03.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6747796269585002 1.3418  
a 25.5703216817347 80.862 au
q 8.31598955612491 8.0121 au
i 10.2511110201094 1.5173 deg
node 177.8129545571631 1.6824 deg
peri 286.5325752319596 28.531 deg
M 17.25242510590893 94.75 deg
tp 2449038.157052819082
(1993-Feb-19.65705282)
1694.1 TDB
period 47228.34360869427
129.30
2.2403e+05
613.4
d
yr
n .007622541306609099 0.036158 deg/d
Q 42.8246538073445 135.43 au
  Orbit Determination Parameters
   # obs. used (total)      11  
   data-arc span      49 days  
   first obs. used      1999-04-17  
   last obs. used      1999-06-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      9  
   norm. resid. RMS      .30979  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-18 08:22:38  

Additional Information
 Earth MOID = 7.35019 au 
 Jupiter MOID = 3.30719 au 
 T_jup = 3.423 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.8   n/a MPO261750  
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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