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305720 (2009 CM20)
Classification: Main-belt Asteroid          SPK-ID: 2305720
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2380677419050538 1.0931e-07  
a 2.309520256184193 1.8543e-08 au
q 1.759697983910441 2.5582e-07 au
i 2.845502467036454 6.8876e-06 deg
node 184.2730120781229 0.00014413 deg
peri 179.9856788683858 0.00014491 deg
M 188.4247132975523 1.821e-05 deg
tp 2459611.488903549470
(2022-Jan-31.98890355)
6.4182e-05 TDB
period 1281.979529250417
3.51
1.5439e-05
4.227e-08
d
yr
n .280815716465063 3.382e-09 deg/d
Q 2.859342528457945 2.2957e-08 au
  Orbit Determination Parameters
   # obs. used (total)      221  
   data-arc span      5204 days (14.25 yr)  
   first obs. used      2004-11-10  
   last obs. used      2019-02-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54494  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 10:10:17  

Additional Information
 Earth MOID = .757638 au 
 Jupiter MOID = 2.60086 au 
 T_jup = 3.546 
[ 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 17.3   n/a MPO471210  

305720 (2009 CM20)          Discovered 2009-Feb-01 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

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