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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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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2382680427497013 1.0879e-07  
a 2.309758942106621 1.7772e-08 au
q 1.759417199747256 2.5456e-07 au
i 2.845668039788612 6.6832e-06 deg
node 184.2688177204568 0.00012997 deg
peri 179.9410735419652 0.00013065 deg
M 299.7021516195097 1.7249e-05 deg
tp 2459611.257197131863
(2022-Jan-31.75719713)
6.1469e-05 TDB
period 1282.178270767046
3.51
1.4798e-05
4.051e-08
d
yr
n .2807721891782136 3.2406e-09 deg/d
Q 2.860100684465986 2.2007e-08 au
  Orbit Determination Parameters
   # obs. used (total)      237  
   data-arc span      5612 days (15.36 yr)  
   first obs. used      2004-11-10  
   last obs. used      2020-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54262  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 05:56:14  

Additional Information
 Earth MOID = .756519 au 
 Jupiter MOID = 2.60166 au 
 T_jup = 3.545 
[ 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 17.42   n/a E2021B25  

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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