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212988 (2009 DA18)
Classification: Main-belt Asteroid          SPK-ID: 2212988
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04240324546394273 5.4791e-08  
a 2.867476275018185 3.0541e-08 au
q 2.745885974666557 1.6414e-07 au
i 5.907390884494074 1.3188e-05 deg
node 165.2412277535875 6.8538e-05 deg
peri 120.4442797512897 0.0001821 deg
M 355.612916070339 0.00016944 deg
tp 2459022.113326745454
(2020-Jun-21.61332675)
0.00083477 TDB
period 1773.569357941269
4.86
2.8335e-05
7.758e-08
d
yr
n .2029805027855704 3.2429e-09 deg/d
Q 2.989066575369814 3.1836e-08 au
  Orbit Determination Parameters
   # obs. used (total)      164  
   data-arc span      6466 days (17.70 yr)  
   first obs. used      2001-08-23  
   last obs. used      2019-05-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57515  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 08:20:34  

Additional Information
 Earth MOID = 1.73565 au 
 Jupiter MOID = 2.07967 au 
 T_jup = 3.290 
[ 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 16.3   n/a MPO433392  

212988 (2009 DA18)          Discovered 2009-Feb-19 by Spacewatch at Kitt Peak
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

[ show close-approach data ]
Alternate Designations
 2009 DA18 = 2004 CR111 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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