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215111 (1997 WK56)
Classification: Main-belt Asteroid          SPK-ID: 2215111
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 .08053748669663921 1.0481e-07  
a 2.734709878318436 2.7319e-08 au
q 2.514463217874197 2.9624e-07 au
i 5.094415020618347 7.7994e-06 deg
node 227.9492308697572 0.0001116 deg
peri 125.7997209671119 0.00012119 deg
M 35.2455896861338 4.7122e-05 deg
tp 2458838.778561294199
(2019-Dec-21.27856129)
0.00021591 TDB
period 1651.829872972527
4.52
2.4752e-05
6.777e-08
d
yr
n .2179401195549074 3.2657e-09 deg/d
Q 2.954956538762675 2.9519e-08 au
  Orbit Determination Parameters
   # obs. used (total)      124  
   data-arc span      7988 days (21.87 yr)  
   first obs. used      1997-11-01  
   last obs. used      2019-09-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53388  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:04:00  

Additional Information
 Earth MOID = 1.5139 au 
 Jupiter MOID = 2.39407 au 
 T_jup = 3.342 
[ 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 16.5   n/a MPO494185  

215111 (1997 WK56)          Discovered 1997-Nov-21 by Spacewatch at Kitt Peak
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08

[ show close-approach data ]
Alternate Designations
 1997 WK56 = 2006 WO57 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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