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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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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03237704334786192 5.5462e-08  
a 2.67834342977266 1.6777e-08 au
q 2.59162658844645 1.5241e-07 au
i 3.852417917690454 5.7999e-06 deg
node 44.94629994807744 8.2881e-05 deg
peri 189.7371261144395 0.00012403 deg
M 349.359870217284 9.1861e-05 deg
tp 2459247.819728773095
(2021-Feb-02.31972877)
0.00040851 TDB
period 1601.023926041422
4.38
1.5043e-05
4.119e-08
d
yr
n .2248561024881811 2.1127e-09 deg/d
Q 2.765060271098871 1.732e-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55685  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:05:10  

Additional Information
 Earth MOID = 1.5786 au 
 Jupiter MOID = 2.20567 au 
 T_jup = 3.374 
[ 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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