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227857 (2007 DW68)
Classification: Main-belt Asteroid          SPK-ID: 2227857
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06866300133657183 4.9135e-08  
a 2.727230070878071 3.1039e-08 au
q 2.53997026887623 1.3213e-07 au
i 4.026955858198374 6.9801e-06 deg
node 4.136587217359115 7.5848e-05 deg
peri 274.9642432842561 9.8278e-05 deg
M 274.9759017961995 6.8737e-05 deg
tp 2459589.026482021097
(2022-Jan-09.52648202)
0.00031772 TDB
period 1645.057536421396
4.50
2.8084e-05
7.689e-08
d
yr
n .2188373306280413 3.7359e-09 deg/d
Q 2.914489872879911 3.317e-08 au
  Orbit Determination Parameters
   # obs. used (total)      188  
   data-arc span      6120 days (16.76 yr)  
   first obs. used      2003-04-26  
   last obs. used      2020-01-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55637  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:41:25  

Additional Information
 Earth MOID = 1.52579 au 
 Jupiter MOID = 2.17244 au 
 T_jup = 3.349 
[ 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 16.6   n/a MPO460003  

227857 (2007 DW68)          Discovered 2007-Feb-21 by Spacewatch at Kitt Peak
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ show close-approach data ]
Alternate Designations
 2007 DW68 = 2009 SQ136 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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