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JPL Small-Body Database Browser
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65974 (1998 HP39)
Classification: Main-belt Asteroid          SPK-ID: 2065974
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06088612952873269 4.6227e-08  
a 2.796392755211881 1.8461e-08 au
q 2.62613122370484 1.3298e-07 au
i 6.404829521319329 4.8882e-06 deg
node 199.3194071078738 3.931e-05 deg
peri 338.9503106012382 5.5955e-05 deg
M 285.9448495787307 4.1046e-05 deg
tp 2459351.856867865121
(2021-May-17.35686787)
0.00019603 TDB
period 1708.030727260729
4.68
1.6914e-05
4.631e-08
d
yr
n .2107690419465424 2.0871e-09 deg/d
Q 2.966654286718921 1.9585e-08 au
  Orbit Determination Parameters
   # obs. used (total)      732  
   data-arc span      7974 days (21.83 yr)  
   first obs. used      1998-03-29  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56813  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 14:49:05  

Additional Information
 Earth MOID = 1.62999 au 
 Jupiter MOID = 1.99843 au 
 T_jup = 3.315 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2   n/a MPO417281  

65974 (1998 HP39)          Discovered 1998-Apr-20 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HP39 = 2003 JC7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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