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120157 (2003 HC10)
Classification: Main-belt Asteroid          SPK-ID: 2120157
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03247582590840992 5.5509e-08  
a 2.678778626819058 1.6837e-08 au
q 2.591783078487313 1.5257e-07 au
i 3.852185052945598 5.7994e-06 deg
node 44.94837693513087 8.2885e-05 deg
peri 189.4839859538903 0.00012374 deg
M 304.6386589618028 9.1465e-05 deg
tp 2459246.767876449275
(2021-Feb-01.26787645)		 0.00040676 TDB
period 1601.414161202658
4.38		 1.5098e-05
4.134e-08		 d
yr
n .2248013091938945 2.1194e-09 deg/d
Q 2.765774175150804 1.7383e-08 au
   Orbit Determination Parameters
   # obs. used (total)      339  
   data-arc span      9510 days (26.04 yr)  
   first obs. used      1994-04-03  
   last obs. used      2020-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55686  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:59:06  

Additional Information
 Earth MOID = 1.58021 au 
 Jupiter MOID = 2.20593 au 
 T_jup = 3.373 
[ 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 16.41   n/a E2021B55  

120157 (2003 HC10)          Discovered 2003-Apr-25 by Spacewatch at Kitt Peak
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

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