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120685 (1997 CM9)
Classification: Main-belt Asteroid          SPK-ID: 2120685
[ 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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2104028477994095 6.5633e-08  
a 2.744108816952238 2.015e-08 au
q 2.166740507194019 1.7785e-07 au
i 8.552924074246885 7.9591e-06 deg
node 338.1249122545776 2.3724e-05 deg
peri 45.83236552419547 2.9887e-05 deg
M 148.9586803697473 1.5894e-05 deg
tp 2458313.488928217347
(2018-Jul-13.98892822)		 7.0617e-05 TDB
period 1660.352959813044
4.55		 1.8288e-05
5.007e-08		 d
yr
n .2168213679340422 2.3882e-09 deg/d
Q 3.321477126710457 2.439e-08 au
   Orbit Determination Parameters
   # obs. used (total)      543  
   data-arc span      8478 days (23.21 yr)  
   first obs. used      1997-02-01  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .482  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 20:39:27  

Additional Information
 Earth MOID = 1.17938 au 
 Jupiter MOID = 2.20327 au 
 T_jup = 3.300 
[ 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 15.89   n/a E2021B55  

120685 (1997 CM9)          Discovered 1997-Feb-01 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

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Alternate Designations
 1997 CM9 = 2004 PH101 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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