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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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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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2106139728964218 6.5673e-08  
a 2.743608853264097 2.0118e-08 au
q 2.165766492604349 1.7794e-07 au
i 8.55345064304775 7.9597e-06 deg
node 338.1275069245292 2.3724e-05 deg
peri 45.81017095629667 2.9873e-05 deg
M 192.3541590870756 1.6067e-05 deg
tp 2459973.486667200600
(2023-Jan-28.98666720)
7.8094e-05 TDB
period 1659.899217760808
4.54
1.8257e-05
4.998e-08
d
yr
n .2168806371784652 2.3854e-09 deg/d
Q 3.321451213923844 2.4355e-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 = 1.17709 au 
 Jupiter MOID = 2.2044 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

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